Keystore overhaul (#13615)

* Remove 'supported_keys' 'sign_with_any' and 'sign_with_all' from keystore trait

* Remove the aync keystore

* Renaming:
- SyncCryptoStore -> Keystore
- SyncCryptoStorePtr -> KeystorePtr
- KeyStore -> MemoryKeystore

* Fix authority discovery worker and tests

* Rename 'insert_unknown' to 'insert'

* Remove leftover

substrate/Cargo.lock

@@ -10339,7 +10339,6 @@ dependencies = [
 name = "sp-keystore"
 version = "0.13.0"
 dependencies = [
- "async-trait",
  "futures",
  "merlin",
  "parity-scale-codec",

substrate/bin/node-template/node/src/service.rs

@@ -150,7 +150,7 @@ pub fn new_partial(
 fn remote_keystore(_url: &String) -> Result<Arc<LocalKeystore>, &'static str> {
 	// FIXME: here would the concrete keystore be built,
 	//        must return a concrete type (NOT `LocalKeystore`) that
-	//        implements `CryptoStore` and `SyncCryptoStore`
+	//        implements `Keystore`
 	Err("Remote Keystore not supported.")
 }
 
@@ -233,7 +233,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 	let _rpc_handlers = sc_service::spawn_tasks(sc_service::SpawnTasksParams {
 		network: network.clone(),
 		client: client.clone(),
-		keystore: keystore_container.sync_keystore(),
+		keystore: keystore_container.keystore(),
 		task_manager: &mut task_manager,
 		transaction_pool: transaction_pool.clone(),
 		rpc_builder: rpc_extensions_builder,
@@ -276,7 +276,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 				},
 				force_authoring,
 				backoff_authoring_blocks,
-				keystore: keystore_container.sync_keystore(),
+				keystore: keystore_container.keystore(),
 				sync_oracle: sync_service.clone(),
 				justification_sync_link: sync_service.clone(),
 				block_proposal_slot_portion: SlotProportion::new(2f32 / 3f32),
@@ -296,8 +296,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 	if enable_grandpa {
 		// if the node isn't actively participating in consensus then it doesn't
 		// need a keystore, regardless of which protocol we use below.
-		let keystore =
-			if role.is_authority() { Some(keystore_container.sync_keystore()) } else { None };
+		let keystore = if role.is_authority() { Some(keystore_container.keystore()) } else { None };
 
 		let grandpa_config = sc_consensus_grandpa::Config {
 			// FIXME #1578 make this available through chainspec

substrate/bin/node/cli/src/service.rs

@@ -251,7 +251,7 @@ pub fn new_partial(
 		let client = client.clone();
 		let pool = transaction_pool.clone();
 		let select_chain = select_chain.clone();
-		let keystore = keystore_container.sync_keystore();
+		let keystore = keystore_container.keystore();
 		let chain_spec = config.chain_spec.cloned_box();
 
 		let rpc_backend = backend.clone();
@@ -386,7 +386,7 @@ pub fn new_full_base(
 		config,
 		backend,
 		client: client.clone(),
-		keystore: keystore_container.sync_keystore(),
+		keystore: keystore_container.keystore(),
 		network: network.clone(),
 		rpc_builder: Box::new(rpc_builder),
 		transaction_pool: transaction_pool.clone(),
@@ -431,7 +431,7 @@ pub fn new_full_base(
 		let client_clone = client.clone();
 		let slot_duration = babe_link.config().slot_duration();
 		let babe_config = sc_consensus_babe::BabeParams {
-			keystore: keystore_container.sync_keystore(),
+			keystore: keystore_container.keystore(),
 			client: client.clone(),
 			select_chain,
 			env: proposer,
@@ -507,8 +507,7 @@ pub fn new_full_base(
 
 	// if the node isn't actively participating in consensus then it doesn't
 	// need a keystore, regardless of which protocol we use below.
-	let keystore =
-		if role.is_authority() { Some(keystore_container.sync_keystore()) } else { None };
+	let keystore = if role.is_authority() { Some(keystore_container.keystore()) } else { None };
 
 	let config = grandpa::Config {
 		// FIXME #1578 make this available through chainspec
@@ -596,7 +595,7 @@ mod tests {
 	use sp_core::{crypto::Pair as CryptoPair, Public};
 	use sp_inherents::InherentDataProvider;
 	use sp_keyring::AccountKeyring;
-	use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+	use sp_keystore::{Keystore, KeystorePtr};
 	use sp_runtime::{
 		generic::{Digest, Era, SignedPayload},
 		key_types::BABE,
@@ -616,10 +615,10 @@ mod tests {
 		sp_tracing::try_init_simple();
 
 		let keystore_path = tempfile::tempdir().expect("Creates keystore path");
-		let keystore: SyncCryptoStorePtr =
+		let keystore: KeystorePtr =
 			Arc::new(LocalKeystore::open(keystore_path.path(), None).expect("Creates keystore"));
 		let alice: sp_consensus_babe::AuthorityId =
-			SyncCryptoStore::sr25519_generate_new(&*keystore, BABE, Some("//Alice"))
+			Keystore::sr25519_generate_new(&*keystore, BABE, Some("//Alice"))
 				.expect("Creates authority pair")
 				.into();
 
@@ -736,7 +735,7 @@ mod tests {
 				// sign the pre-sealed hash of the block and then
 				// add it to a digest item.
 				let to_sign = pre_hash.encode();
-				let signature = SyncCryptoStore::sign_with(
+				let signature = Keystore::sign_with(
 					&*keystore,
 					sp_consensus_babe::AuthorityId::ID,
 					&alice.to_public_crypto_pair(),

substrate/bin/node/executor/tests/submit_transaction.rs

@@ -21,7 +21,7 @@ use kitchensink_runtime::{Executive, Indices, Runtime, UncheckedExtrinsic};
 use sp_application_crypto::AppKey;
 use sp_core::offchain::{testing::TestTransactionPoolExt, TransactionPoolExt};
 use sp_keyring::sr25519::Keyring::Alice;
-use sp_keystore::{testing::KeyStore, KeystoreExt, SyncCryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore, KeystoreExt};
 use std::sync::Arc;
 
 pub mod common;
@@ -62,20 +62,20 @@ fn should_submit_signed_transaction() {
 	let (pool, state) = TestTransactionPoolExt::new();
 	t.register_extension(TransactionPoolExt::new(pool));
 
-	let keystore = KeyStore::new();
-	SyncCryptoStore::sr25519_generate_new(
+	let keystore = MemoryKeystore::new();
+	Keystore::sr25519_generate_new(
 		&keystore,
 		sr25519::AuthorityId::ID,
 		Some(&format!("{}/hunter1", PHRASE)),
 	)
 	.unwrap();
-	SyncCryptoStore::sr25519_generate_new(
+	Keystore::sr25519_generate_new(
 		&keystore,
 		sr25519::AuthorityId::ID,
 		Some(&format!("{}/hunter2", PHRASE)),
 	)
 	.unwrap();
-	SyncCryptoStore::sr25519_generate_new(
+	Keystore::sr25519_generate_new(
 		&keystore,
 		sr25519::AuthorityId::ID,
 		Some(&format!("{}/hunter3", PHRASE)),
@@ -105,14 +105,14 @@ fn should_submit_signed_twice_from_the_same_account() {
 	let (pool, state) = TestTransactionPoolExt::new();
 	t.register_extension(TransactionPoolExt::new(pool));
 
-	let keystore = KeyStore::new();
-	SyncCryptoStore::sr25519_generate_new(
+	let keystore = MemoryKeystore::new();
+	Keystore::sr25519_generate_new(
 		&keystore,
 		sr25519::AuthorityId::ID,
 		Some(&format!("{}/hunter1", PHRASE)),
 	)
 	.unwrap();
-	SyncCryptoStore::sr25519_generate_new(
+	Keystore::sr25519_generate_new(
 		&keystore,
 		sr25519::AuthorityId::ID,
 		Some(&format!("{}/hunter2", PHRASE)),
@@ -162,7 +162,7 @@ fn should_submit_signed_twice_from_all_accounts() {
 	let (pool, state) = TestTransactionPoolExt::new();
 	t.register_extension(TransactionPoolExt::new(pool));
 
-	let keystore = KeyStore::new();
+	let keystore = MemoryKeystore::new();
 	keystore
 		.sr25519_generate_new(sr25519::AuthorityId::ID, Some(&format!("{}/hunter1", PHRASE)))
 		.unwrap();
@@ -226,8 +226,8 @@ fn submitted_transaction_should_be_valid() {
 	let (pool, state) = TestTransactionPoolExt::new();
 	t.register_extension(TransactionPoolExt::new(pool));
 
-	let keystore = KeyStore::new();
-	SyncCryptoStore::sr25519_generate_new(
+	let keystore = MemoryKeystore::new();
+	Keystore::sr25519_generate_new(
 		&keystore,
 		sr25519::AuthorityId::ID,
 		Some(&format!("{}/hunter1", PHRASE)),

substrate/bin/node/rpc/src/lib.rs

@@ -49,7 +49,7 @@ use sp_block_builder::BlockBuilder;
 use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
 use sp_consensus::SelectChain;
 use sp_consensus_babe::BabeApi;
-use sp_keystore::SyncCryptoStorePtr;
+use sp_keystore::KeystorePtr;
 
 /// Extra dependencies for BABE.
 pub struct BabeDeps {
@@ -58,7 +58,7 @@ pub struct BabeDeps {
 	/// BABE pending epoch changes.
 	pub shared_epoch_changes: SharedEpochChanges<Block, Epoch>,
 	/// The keystore that manages the keys of the node.
-	pub keystore: SyncCryptoStorePtr,
+	pub keystore: KeystorePtr,
 }
 
 /// Extra dependencies for GRANDPA

substrate/bin/utils/chain-spec-builder/src/main.rs

@@ -32,7 +32,7 @@ use sp_core::{
 	crypto::{ByteArray, Ss58Codec},
 	sr25519,
 };
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 
 /// A utility to easily create a testnet chain spec definition with a given set
 /// of authorities and endowed accounts and/or generate random accounts.
@@ -164,7 +164,7 @@ fn generate_chain_spec(
 
 fn generate_authority_keys_and_store(seeds: &[String], keystore_path: &Path) -> Result<(), String> {
 	for (n, seed) in seeds.iter().enumerate() {
-		let keystore: SyncCryptoStorePtr = Arc::new(
+		let keystore: KeystorePtr = Arc::new(
 			LocalKeystore::open(keystore_path.join(format!("auth-{}", n)), None)
 				.map_err(|err| err.to_string())?,
 		);
@@ -173,7 +173,7 @@ fn generate_authority_keys_and_store(seeds: &[String], keystore_path: &Path) ->
 			chain_spec::authority_keys_from_seed(seed);
 
 		let insert_key = |key_type, public| {
-			SyncCryptoStore::insert_unknown(&*keystore, key_type, &format!("//{}", seed), public)
+			Keystore::insert(&*keystore, key_type, &format!("//{}", seed), public)
 				.map_err(|_| format!("Failed to insert key: {}", grandpa))
 		};
 

substrate/client/api/src/execution_extensions.rs

@@ -30,7 +30,7 @@ use sp_core::{
 	ExecutionContext,
 };
 use sp_externalities::{Extension, Extensions};
-use sp_keystore::{KeystoreExt, SyncCryptoStorePtr};
+use sp_keystore::{KeystoreExt, KeystorePtr};
 use sp_runtime::{
 	generic::BlockId,
 	traits::{Block as BlockT, NumberFor},
@@ -163,7 +163,7 @@ impl<T: offchain::DbExternalities + Clone + Sync + Send + 'static> DbExternaliti
 /// for each call, based on required `Capabilities`.
 pub struct ExecutionExtensions<Block: BlockT> {
 	strategies: ExecutionStrategies,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	offchain_db: Option<Box<dyn DbExternalitiesFactory>>,
 	// FIXME: these two are only RwLock because of https://github.com/paritytech/substrate/issues/4587
 	//        remove when fixed.
@@ -191,7 +191,7 @@ impl<Block: BlockT> ExecutionExtensions<Block> {
 	/// Create new `ExecutionExtensions` given a `keystore` and `ExecutionStrategies`.
 	pub fn new(
 		strategies: ExecutionStrategies,
-		keystore: Option<SyncCryptoStorePtr>,
+		keystore: Option<KeystorePtr>,
 		offchain_db: Option<Box<dyn DbExternalitiesFactory>>,
 	) -> Self {
 		let transaction_pool = RwLock::new(None);

substrate/client/authority-discovery/src/tests.rs

@@ -33,7 +33,7 @@ use std::{collections::HashSet, sync::Arc};
 
 use sp_authority_discovery::AuthorityId;
 use sp_core::crypto::key_types;
-use sp_keystore::{testing::KeyStore, CryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore};
 
 #[test]
 fn get_addresses_and_authority_id() {
@@ -42,12 +42,11 @@ fn get_addresses_and_authority_id() {
 
 	let mut pool = LocalPool::new();
 
-	let key_store = KeyStore::new();
+	let key_store = MemoryKeystore::new();
 
 	let remote_authority_id: AuthorityId = pool.run_until(async {
 		key_store
 			.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None)
-			.await
 			.unwrap()
 			.into()
 	});

substrate/client/authority-discovery/src/worker.rs

@@ -53,7 +53,7 @@ use sp_authority_discovery::{
 use sp_blockchain::HeaderBackend;
 
 use sp_core::crypto::{key_types, CryptoTypePublicPair, Pair};
-use sp_keystore::CryptoStore;
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::traits::Block as BlockT;
 
 mod addr_cache;
@@ -78,7 +78,7 @@ const MAX_IN_FLIGHT_LOOKUPS: usize = 8;
 /// Role an authority discovery [`Worker`] can run as.
 pub enum Role {
 	/// Publish own addresses and discover addresses of others.
-	PublishAndDiscover(Arc<dyn CryptoStore>),
+	PublishAndDiscover(KeystorePtr),
 	/// Discover addresses of others.
 	Discover,
 }
@@ -364,8 +364,7 @@ where
 			Some(peer_signature),
 			key_store.as_ref(),
 			keys_vec,
-		)
-		.await?;
+		)?;
 
 		for (key, value) in kv_pairs.into_iter() {
 			self.network.put_value(key, value);
@@ -382,7 +381,6 @@ where
 		let local_keys = match &self.role {
 			Role::PublishAndDiscover(key_store) => key_store
 				.sr25519_public_keys(key_types::AUTHORITY_DISCOVERY)
-				.await
 				.into_iter()
 				.collect::<HashSet<_>>(),
 			Role::Discover => HashSet::new(),
@@ -588,12 +586,11 @@ where
 	// next authority set with two keys. The function does not return all of the local authority
 	// discovery public keys, but only the ones intersecting with the current or next authority set.
 	async fn get_own_public_keys_within_authority_set(
-		key_store: Arc<dyn CryptoStore>,
+		key_store: KeystorePtr,
 		client: &Client,
 	) -> Result<HashSet<AuthorityId>> {
 		let local_pub_keys = key_store
 			.sr25519_public_keys(key_types::AUTHORITY_DISCOVERY)
-			.await
 			.into_iter()
 			.collect::<HashSet<_>>();
 
@@ -663,33 +660,28 @@ fn sign_record_with_peer_id(
 	Ok(schema::PeerSignature { signature, public_key })
 }
 
-async fn sign_record_with_authority_ids(
+fn sign_record_with_authority_ids(
 	serialized_record: Vec<u8>,
 	peer_signature: Option<schema::PeerSignature>,
-	key_store: &dyn CryptoStore,
+	key_store: &dyn Keystore,
 	keys: Vec<CryptoTypePublicPair>,
 ) -> Result<Vec<(KademliaKey, Vec<u8>)>> {
-	let signatures = key_store
-		.sign_with_all(key_types::AUTHORITY_DISCOVERY, keys.clone(), &serialized_record)
-		.await
-		.map_err(|_| Error::Signing)?;
+	let mut result = Vec::with_capacity(keys.len());
 
-	let mut result = vec![];
-	for (sign_result, key) in signatures.into_iter().zip(keys.iter()) {
-		let mut signed_record = vec![];
+	for key in keys.iter() {
+		let auth_signature = key_store
+			.sign_with(key_types::AUTHORITY_DISCOVERY, key, &serialized_record)
+			.map_err(|_| Error::Signing)?
+			.ok_or_else(|| Error::MissingSignature(key.clone()))?;
 
-		// Verify that all signatures exist for all provided keys.
-		let auth_signature =
-			sign_result.ok().flatten().ok_or_else(|| Error::MissingSignature(key.clone()))?;
-		schema::SignedAuthorityRecord {
+		let signed_record = schema::SignedAuthorityRecord {
 			record: serialized_record.clone(),
 			auth_signature,
 			peer_signature: peer_signature.clone(),
 		}
-		.encode(&mut signed_record)
-		.map_err(Error::EncodingProto)?;
+		.encode_to_vec();
 
-		result.push((hash_authority_id(key.1.as_ref()), signed_record));
+		result.push((hash_authority_id(&key.1), signed_record));
 	}
 
 	Ok(result)

substrate/client/authority-discovery/src/worker/tests.rs

@@ -40,7 +40,7 @@ use prometheus_endpoint::prometheus::default_registry;
 use sc_client_api::HeaderBackend;
 use sc_network::Signature;
 use sp_api::{ApiRef, ProvideRuntimeApi};
-use sp_keystore::{testing::KeyStore, CryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore};
 use sp_runtime::traits::{Block as BlockT, NumberFor, Zero};
 use substrate_test_runtime_client::runtime::Block;
 
@@ -208,10 +208,10 @@ impl<'a> NetworkSigner for TestSigner<'a> {
 	}
 }
 
-async fn build_dht_event<Signer: NetworkSigner>(
+fn build_dht_event<Signer: NetworkSigner>(
 	addresses: Vec<Multiaddr>,
 	public_key: AuthorityId,
-	key_store: &dyn CryptoStore,
+	key_store: &MemoryKeystore,
 	network: Option<&Signer>,
 ) -> Vec<(KademliaKey, Vec<u8>)> {
 	let serialized_record =
@@ -224,7 +224,6 @@ async fn build_dht_event<Signer: NetworkSigner>(
 		key_store,
 		vec![public_key.into()],
 	)
-	.await
 	.unwrap();
 	// There is always a single item in it, because we signed it with a single key
 	kv_pairs
@@ -234,7 +233,7 @@ async fn build_dht_event<Signer: NetworkSigner>(
 fn new_registers_metrics() {
 	let (_dht_event_tx, dht_event_rx) = mpsc::channel(1000);
 	let network: Arc<TestNetwork> = Arc::new(Default::default());
-	let key_store = KeyStore::new();
+	let key_store = MemoryKeystore::new();
 	let test_api = Arc::new(TestApi { authorities: vec![] });
 
 	let registry = prometheus_endpoint::Registry::new();
@@ -266,7 +265,7 @@ fn triggers_dht_get_query() {
 	let test_api = Arc::new(TestApi { authorities: authorities.clone() });
 
 	let network = Arc::new(TestNetwork::default());
-	let key_store = KeyStore::new();
+	let key_store = MemoryKeystore::new();
 
 	let (_to_worker, from_service) = mpsc::channel(0);
 	let mut worker = Worker::new(
@@ -298,14 +297,12 @@ fn publish_discover_cycle() {
 
 	let network: Arc<TestNetwork> = Arc::new(Default::default());
 
-	let key_store = KeyStore::new();
+	let key_store = MemoryKeystore::new();
 
 	let _ = pool.spawner().spawn_local_obj(
 		async move {
-			let node_a_public = key_store
-				.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None)
-				.await
-				.unwrap();
+			let node_a_public =
+				key_store.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None).unwrap();
 			let test_api = Arc::new(TestApi { authorities: vec![node_a_public.into()] });
 
 			let (_to_worker, from_service) = mpsc::channel(0);
@@ -337,7 +334,7 @@ fn publish_discover_cycle() {
 				authorities: vec![node_a_public.into()],
 			});
 			let network: Arc<TestNetwork> = Arc::new(Default::default());
-			let key_store = KeyStore::new();
+			let key_store = MemoryKeystore::new();
 
 			let (_to_worker, from_service) = mpsc::channel(0);
 			let mut worker = Worker::new(
@@ -371,7 +368,7 @@ fn publish_discover_cycle() {
 fn terminate_when_event_stream_terminates() {
 	let (dht_event_tx, dht_event_rx) = channel(1000);
 	let network: Arc<TestNetwork> = Arc::new(Default::default());
-	let key_store = KeyStore::new();
+	let key_store = MemoryKeystore::new();
 	let test_api = Arc::new(TestApi { authorities: vec![] });
 
 	let (to_worker, from_service) = mpsc::channel(0);
@@ -420,11 +417,11 @@ fn dont_stop_polling_dht_event_stream_after_bogus_event() {
 
 		address.with(multiaddr::Protocol::P2p(peer_id.into()))
 	};
-	let remote_key_store = KeyStore::new();
-	let remote_public_key: AuthorityId =
-		block_on(remote_key_store.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None))
-			.unwrap()
-			.into();
+	let remote_key_store = MemoryKeystore::new();
+	let remote_public_key: AuthorityId = remote_key_store
+		.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None)
+		.unwrap()
+		.into();
 
 	let (mut dht_event_tx, dht_event_rx) = channel(1);
 	let (network, mut network_events) = {
@@ -433,7 +430,7 @@ fn dont_stop_polling_dht_event_stream_after_bogus_event() {
 		(Arc::new(n), r)
 	};
 
-	let key_store = KeyStore::new();
+	let key_store = MemoryKeystore::new();
 	let test_api = Arc::new(TestApi { authorities: vec![remote_public_key.clone()] });
 	let mut pool = LocalPool::new();
 
@@ -480,8 +477,7 @@ fn dont_stop_polling_dht_event_stream_after_bogus_event() {
 				remote_public_key.clone(),
 				&remote_key_store,
 				None,
-			)
-			.await;
+			);
 			DhtEvent::ValueFound(kv_pairs)
 		};
 		dht_event_tx.send(dht_event).await.expect("Channel has capacity of 1.");
@@ -498,7 +494,7 @@ fn dont_stop_polling_dht_event_stream_after_bogus_event() {
 }
 
 struct DhtValueFoundTester {
-	pub remote_key_store: KeyStore,
+	pub remote_key_store: MemoryKeystore,
 	pub remote_authority_public: sp_core::sr25519::Public,
 	pub remote_node_key: Keypair,
 	pub local_worker: Option<
@@ -516,10 +512,10 @@ struct DhtValueFoundTester {
 
 impl DhtValueFoundTester {
 	fn new() -> Self {
-		let remote_key_store = KeyStore::new();
-		let remote_authority_public =
-			block_on(remote_key_store.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None))
-				.unwrap();
+		let remote_key_store = MemoryKeystore::new();
+		let remote_authority_public = remote_key_store
+			.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None)
+			.unwrap();
 
 		let remote_node_key = Keypair::generate_ed25519();
 		Self { remote_key_store, remote_authority_public, remote_node_key, local_worker: None }
@@ -542,7 +538,7 @@ impl DhtValueFoundTester {
 		let local_test_api =
 			Arc::new(TestApi { authorities: vec![self.remote_authority_public.into()] });
 		let local_network: Arc<TestNetwork> = Arc::new(Default::default());
-		let local_key_store = KeyStore::new();
+		let local_key_store = MemoryKeystore::new();
 
 		let (_to_worker, from_service) = mpsc::channel(0);
 		let mut local_worker = Worker::new(
@@ -576,12 +572,12 @@ fn limit_number_of_addresses_added_to_cache_per_authority() {
 	let mut tester = DhtValueFoundTester::new();
 	assert!(MAX_ADDRESSES_PER_AUTHORITY < 100);
 	let addresses = (1..100).map(|i| tester.multiaddr_with_peer_id(i)).collect();
-	let kv_pairs = block_on(build_dht_event::<TestNetwork>(
+	let kv_pairs = build_dht_event::<TestNetwork>(
 		addresses,
 		tester.remote_authority_public.into(),
 		&tester.remote_key_store,
 		None,
-	));
+	);
 
 	let cached_remote_addresses = tester.process_value_found(false, kv_pairs);
 	assert_eq!(MAX_ADDRESSES_PER_AUTHORITY, cached_remote_addresses.unwrap().len());
@@ -591,12 +587,12 @@ fn limit_number_of_addresses_added_to_cache_per_authority() {
 fn strict_accept_address_with_peer_signature() {
 	let mut tester = DhtValueFoundTester::new();
 	let addr = tester.multiaddr_with_peer_id(1);
-	let kv_pairs = block_on(build_dht_event(
+	let kv_pairs = build_dht_event(
 		vec![addr.clone()],
 		tester.remote_authority_public.into(),
 		&tester.remote_key_store,
 		Some(&TestSigner { keypair: &tester.remote_node_key }),
-	));
+	);
 
 	let cached_remote_addresses = tester.process_value_found(true, kv_pairs);
 
@@ -611,12 +607,12 @@ fn strict_accept_address_with_peer_signature() {
 fn reject_address_with_rogue_peer_signature() {
 	let mut tester = DhtValueFoundTester::new();
 	let rogue_remote_node_key = Keypair::generate_ed25519();
-	let kv_pairs = block_on(build_dht_event(
+	let kv_pairs = build_dht_event(
 		vec![tester.multiaddr_with_peer_id(1)],
 		tester.remote_authority_public.into(),
 		&tester.remote_key_store,
 		Some(&TestSigner { keypair: &rogue_remote_node_key }),
-	));
+	);
 
 	let cached_remote_addresses = tester.process_value_found(false, kv_pairs);
 
@@ -629,12 +625,12 @@ fn reject_address_with_rogue_peer_signature() {
 #[test]
 fn reject_address_with_invalid_peer_signature() {
 	let mut tester = DhtValueFoundTester::new();
-	let mut kv_pairs = block_on(build_dht_event(
+	let mut kv_pairs = build_dht_event(
 		vec![tester.multiaddr_with_peer_id(1)],
 		tester.remote_authority_public.into(),
 		&tester.remote_key_store,
 		Some(&TestSigner { keypair: &tester.remote_node_key }),
-	));
+	);
 	// tamper with the signature
 	let mut record = schema::SignedAuthorityRecord::decode(kv_pairs[0].1.as_slice()).unwrap();
 	record.peer_signature.as_mut().map(|p| p.signature[1] = !p.signature[1]);
@@ -651,12 +647,12 @@ fn reject_address_with_invalid_peer_signature() {
 #[test]
 fn reject_address_without_peer_signature() {
 	let mut tester = DhtValueFoundTester::new();
-	let kv_pairs = block_on(build_dht_event::<TestNetwork>(
+	let kv_pairs = build_dht_event::<TestNetwork>(
 		vec![tester.multiaddr_with_peer_id(1)],
 		tester.remote_authority_public.into(),
 		&tester.remote_key_store,
 		None,
-	));
+	);
 
 	let cached_remote_addresses = tester.process_value_found(true, kv_pairs);
 
@@ -669,12 +665,12 @@ fn do_not_cache_addresses_without_peer_id() {
 	let multiaddr_with_peer_id = tester.multiaddr_with_peer_id(1);
 	let multiaddr_without_peer_id: Multiaddr =
 		"/ip6/2001:db8:0:0:0:0:0:2/tcp/30333".parse().unwrap();
-	let kv_pairs = block_on(build_dht_event::<TestNetwork>(
+	let kv_pairs = build_dht_event::<TestNetwork>(
 		vec![multiaddr_with_peer_id.clone(), multiaddr_without_peer_id],
 		tester.remote_authority_public.into(),
 		&tester.remote_key_store,
 		None,
-	));
+	);
 
 	let cached_remote_addresses = tester.process_value_found(false, kv_pairs);
 
@@ -701,7 +697,7 @@ fn addresses_to_publish_adds_p2p() {
 		Arc::new(TestApi { authorities: vec![] }),
 		network.clone(),
 		Box::pin(dht_event_rx),
-		Role::PublishAndDiscover(Arc::new(KeyStore::new())),
+		Role::PublishAndDiscover(Arc::new(MemoryKeystore::new())),
 		Some(prometheus_endpoint::Registry::new()),
 		Default::default(),
 	);
@@ -735,7 +731,7 @@ fn addresses_to_publish_respects_existing_p2p_protocol() {
 		Arc::new(TestApi { authorities: vec![] }),
 		network.clone(),
 		Box::pin(dht_event_rx),
-		Role::PublishAndDiscover(Arc::new(KeyStore::new())),
+		Role::PublishAndDiscover(Arc::new(MemoryKeystore::new())),
 		Some(prometheus_endpoint::Registry::new()),
 		Default::default(),
 	);
@@ -755,10 +751,11 @@ fn lookup_throttling() {
 
 		address.with(multiaddr::Protocol::P2p(peer_id.into()))
 	};
-	let remote_key_store = KeyStore::new();
+	let remote_key_store = MemoryKeystore::new();
 	let remote_public_keys: Vec<AuthorityId> = (0..20)
 		.map(|_| {
-			block_on(remote_key_store.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None))
+			remote_key_store
+				.sr25519_generate_new(key_types::AUTHORITY_DISCOVERY, None)
 				.unwrap()
 				.into()
 		})
@@ -818,8 +815,7 @@ fn lookup_throttling() {
 					remote_key,
 					&remote_key_store,
 					None,
-				)
-				.await;
+				);
 				DhtEvent::ValueFound(kv_pairs)
 			};
 			dht_event_tx.send(dht_event).await.expect("Channel has capacity of 1.");

substrate/client/cli/src/commands/insert_key.rs

@@ -24,7 +24,7 @@ use clap::Parser;
 use sc_keystore::LocalKeystore;
 use sc_service::config::{BasePath, KeystoreConfig};
 use sp_core::crypto::{KeyTypeId, SecretString};
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use std::sync::Arc;
 
 /// The `insert` command
@@ -69,7 +69,7 @@ impl InsertKeyCmd {
 		let (keystore, public) = match self.keystore_params.keystore_config(&config_dir)? {
 			(_, KeystoreConfig::Path { path, password }) => {
 				let public = with_crypto_scheme!(self.scheme, to_vec(&suri, password.clone()))?;
-				let keystore: SyncCryptoStorePtr = Arc::new(LocalKeystore::open(path, password)?);
+				let keystore: KeystorePtr = Arc::new(LocalKeystore::open(path, password)?);
 				(keystore, public)
 			},
 			_ => unreachable!("keystore_config always returns path and password; qed"),
@@ -78,8 +78,8 @@ impl InsertKeyCmd {
 		let key_type =
 			KeyTypeId::try_from(self.key_type.as_str()).map_err(|_| Error::KeyTypeInvalid)?;
 
-		SyncCryptoStore::insert_unknown(&*keystore, key_type, &suri, &public[..])
-			.map_err(|_| Error::KeyStoreOperation)?;
+		Keystore::insert(&*keystore, key_type, &suri, &public[..])
+			.map_err(|_| Error::KeystoreOperation)?;
 
 		Ok(())
 	}

substrate/client/cli/src/error.rs

@@ -64,7 +64,7 @@ pub enum Error {
 	SignatureInvalid,
 
 	#[error("Key store operation failed")]
-	KeyStoreOperation,
+	KeystoreOperation,
 
 	#[error("Key storage issue encountered")]
 	KeyStorage(#[from] sc_keystore::Error),

substrate/client/consensus/aura/src/lib.rs

@@ -51,7 +51,7 @@ use sp_consensus::{BlockOrigin, Environment, Error as ConsensusError, Proposer,
 use sp_consensus_slots::Slot;
 use sp_core::crypto::{ByteArray, Pair, Public};
 use sp_inherents::CreateInherentDataProviders;
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::{
 	traits::{Block as BlockT, Header, Member, NumberFor, Zero},
 	DigestItem,
@@ -168,7 +168,7 @@ pub struct StartAuraParams<C, SC, I, PF, SO, L, CIDP, BS, N> {
 	/// The backoff strategy when we miss slots.
 	pub backoff_authoring_blocks: Option<BS>,
 	/// The keystore used by the node.
-	pub keystore: SyncCryptoStorePtr,
+	pub keystore: KeystorePtr,
 	/// The proportion of the slot dedicated to proposing.
 	///
 	/// The block proposing will be limited to this proportion of the slot from the starting of the
@@ -265,7 +265,7 @@ pub struct BuildAuraWorkerParams<C, I, PF, SO, L, BS, N> {
 	/// The backoff strategy when we miss slots.
 	pub backoff_authoring_blocks: Option<BS>,
 	/// The keystore used by the node.
-	pub keystore: SyncCryptoStorePtr,
+	pub keystore: KeystorePtr,
 	/// The proportion of the slot dedicated to proposing.
 	///
 	/// The block proposing will be limited to this proportion of the slot from the starting of the
@@ -346,7 +346,7 @@ struct AuraWorker<C, E, I, P, SO, L, BS, N> {
 	client: Arc<C>,
 	block_import: I,
 	env: E,
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 	sync_oracle: SO,
 	justification_sync_link: L,
 	force_authoring: bool,
@@ -418,7 +418,7 @@ where
 	) -> Option<Self::Claim> {
 		let expected_author = slot_author::<P>(slot, epoch_data);
 		expected_author.and_then(|p| {
-			if SyncCryptoStore::has_keys(
+			if Keystore::has_keys(
 				&*self.keystore,
 				&[(p.to_raw_vec(), sp_application_crypto::key_types::AURA)],
 			) {
@@ -449,7 +449,7 @@ where
 		// add it to a digest item.
 		let public_type_pair = public.to_public_crypto_pair();
 		let public = public.to_raw_vec();
-		let signature = SyncCryptoStore::sign_with(
+		let signature = Keystore::sign_with(
 			&*self.keystore,
 			<AuthorityId<P> as AppKey>::ID,
 			&public_type_pair,
@@ -798,7 +798,7 @@ mod tests {
 				LocalKeystore::open(keystore_path.path(), None).expect("Creates keystore."),
 			);
 
-			SyncCryptoStore::sr25519_generate_new(&*keystore, AURA, Some(&key.to_seed()))
+			Keystore::sr25519_generate_new(&*keystore, AURA, Some(&key.to_seed()))
 				.expect("Creates authority key");
 			keystore_paths.push(keystore_path);
 
@@ -883,7 +883,7 @@ mod tests {
 
 		let keystore_path = tempfile::tempdir().expect("Creates keystore path");
 		let keystore = LocalKeystore::open(keystore_path.path(), None).expect("Creates keystore.");
-		let public = SyncCryptoStore::sr25519_generate_new(&keystore, AuthorityPair::ID, None)
+		let public = Keystore::sr25519_generate_new(&keystore, AuthorityPair::ID, None)
 			.expect("Key should be created");
 		authorities.push(public.into());
 
@@ -933,7 +933,7 @@ mod tests {
 
 		let keystore_path = tempfile::tempdir().expect("Creates keystore path");
 		let keystore = LocalKeystore::open(keystore_path.path(), None).expect("Creates keystore.");
-		SyncCryptoStore::sr25519_generate_new(
+		Keystore::sr25519_generate_new(
 			&keystore,
 			AuthorityPair::ID,
 			Some(&Keyring::Alice.to_seed()),

substrate/client/consensus/babe/rpc/src/lib.rs

@@ -37,7 +37,7 @@ use sp_consensus_babe::{
 	digests::PreDigest, AuthorityId, BabeApi as BabeRuntimeApi, BabeConfiguration,
 };
 use sp_core::crypto::ByteArray;
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::traits::{Block as BlockT, Header as _};
 use std::{collections::HashMap, sync::Arc};
 
@@ -57,7 +57,7 @@ pub struct Babe<B: BlockT, C, SC> {
 	/// shared reference to EpochChanges
 	shared_epoch_changes: SharedEpochChanges<B, Epoch>,
 	/// shared reference to the Keystore
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 	/// config (actually holds the slot duration)
 	babe_config: BabeConfiguration,
 	/// The SelectChain strategy
@@ -71,7 +71,7 @@ impl<B: BlockT, C, SC> Babe<B, C, SC> {
 	pub fn new(
 		client: Arc<C>,
 		shared_epoch_changes: SharedEpochChanges<B, Epoch>,
-		keystore: SyncCryptoStorePtr,
+		keystore: KeystorePtr,
 		babe_config: BabeConfiguration,
 		select_chain: SC,
 		deny_unsafe: DenyUnsafe,
@@ -117,10 +117,7 @@ where
 				.iter()
 				.enumerate()
 				.filter_map(|(i, a)| {
-					if SyncCryptoStore::has_keys(
-						&*self.keystore,
-						&[(a.0.to_raw_vec(), AuthorityId::ID)],
-					) {
+					if Keystore::has_keys(&*self.keystore, &[(a.0.to_raw_vec(), AuthorityId::ID)]) {
 						Some((a.0.clone(), i))
 					} else {
 						None
@@ -217,7 +214,7 @@ mod tests {
 	use sp_application_crypto::AppPair;
 	use sp_core::crypto::key_types::BABE;
 	use sp_keyring::Sr25519Keyring;
-	use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+	use sp_keystore::{Keystore, KeystorePtr};
 	use substrate_test_runtime_client::{
 		runtime::Block, Backend, DefaultTestClientBuilderExt, TestClient, TestClientBuilder,
 		TestClientBuilderExt,
@@ -229,11 +226,11 @@ mod tests {
 	/// creates keystore backed by a temp file
 	fn create_temp_keystore<P: AppPair>(
 		authority: Sr25519Keyring,
-	) -> (SyncCryptoStorePtr, tempfile::TempDir) {
+	) -> (KeystorePtr, tempfile::TempDir) {
 		let keystore_path = tempfile::tempdir().expect("Creates keystore path");
 		let keystore =
 			Arc::new(LocalKeystore::open(keystore_path.path(), None).expect("Creates keystore"));
-		SyncCryptoStore::sr25519_generate_new(&*keystore, BABE, Some(&authority.to_seed()))
+		Keystore::sr25519_generate_new(&*keystore, BABE, Some(&authority.to_seed()))
 			.expect("Creates authority key");
 
 		(keystore, keystore_path)

substrate/client/consensus/babe/src/authorship.rs

@@ -29,7 +29,7 @@ use sp_consensus_babe::{
 };
 use sp_consensus_vrf::schnorrkel::{VRFOutput, VRFProof};
 use sp_core::{blake2_256, crypto::ByteArray, U256};
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 
 /// Calculates the primary selection threshold for a given authority, taking
 /// into account `c` (`1 - c` represents the probability of a slot being empty).
@@ -133,7 +133,7 @@ fn claim_secondary_slot(
 	slot: Slot,
 	epoch: &Epoch,
 	keys: &[(AuthorityId, usize)],
-	keystore: &SyncCryptoStorePtr,
+	keystore: &KeystorePtr,
 	author_secondary_vrf: bool,
 ) -> Option<(PreDigest, AuthorityId)> {
 	let Epoch { authorities, randomness, mut epoch_index, .. } = epoch;
@@ -153,7 +153,7 @@ fn claim_secondary_slot(
 		if authority_id == expected_author {
 			let pre_digest = if author_secondary_vrf {
 				let transcript_data = make_transcript_data(randomness, slot, epoch_index);
-				let result = SyncCryptoStore::sr25519_vrf_sign(
+				let result = Keystore::sr25519_vrf_sign(
 					&**keystore,
 					AuthorityId::ID,
 					authority_id.as_ref(),
@@ -169,7 +169,7 @@ fn claim_secondary_slot(
 				} else {
 					None
 				}
-			} else if SyncCryptoStore::has_keys(
+			} else if Keystore::has_keys(
 				&**keystore,
 				&[(authority_id.to_raw_vec(), AuthorityId::ID)],
 			) {
@@ -197,7 +197,7 @@ fn claim_secondary_slot(
 pub fn claim_slot(
 	slot: Slot,
 	epoch: &Epoch,
-	keystore: &SyncCryptoStorePtr,
+	keystore: &KeystorePtr,
 ) -> Option<(PreDigest, AuthorityId)> {
 	let authorities = epoch
 		.authorities
@@ -213,7 +213,7 @@ pub fn claim_slot(
 pub fn claim_slot_using_keys(
 	slot: Slot,
 	epoch: &Epoch,
-	keystore: &SyncCryptoStorePtr,
+	keystore: &KeystorePtr,
 	keys: &[(AuthorityId, usize)],
 ) -> Option<(PreDigest, AuthorityId)> {
 	claim_primary_slot(slot, epoch, epoch.config.c, keystore, keys).or_else(|| {
@@ -241,7 +241,7 @@ fn claim_primary_slot(
 	slot: Slot,
 	epoch: &Epoch,
 	c: (u64, u64),
-	keystore: &SyncCryptoStorePtr,
+	keystore: &KeystorePtr,
 	keys: &[(AuthorityId, usize)],
 ) -> Option<(PreDigest, AuthorityId)> {
 	let Epoch { authorities, randomness, mut epoch_index, .. } = epoch;
@@ -254,7 +254,7 @@ fn claim_primary_slot(
 	for (authority_id, authority_index) in keys {
 		let transcript = make_transcript(randomness, slot, epoch_index);
 		let transcript_data = make_transcript_data(randomness, slot, epoch_index);
-		let result = SyncCryptoStore::sr25519_vrf_sign(
+		let result = Keystore::sr25519_vrf_sign(
 			&**keystore,
 			AuthorityId::ID,
 			authority_id.as_ref(),
@@ -294,8 +294,8 @@ mod tests {
 
 	#[test]
 	fn claim_secondary_plain_slot_works() {
-		let keystore: SyncCryptoStorePtr = Arc::new(LocalKeystore::in_memory());
-		let valid_public_key = SyncCryptoStore::sr25519_generate_new(
+		let keystore: KeystorePtr = Arc::new(LocalKeystore::in_memory());
+		let valid_public_key = Keystore::sr25519_generate_new(
 			&*keystore,
 			AuthorityId::ID,
 			Some(sp_core::crypto::DEV_PHRASE),

substrate/client/consensus/babe/src/lib.rs

@@ -119,7 +119,7 @@ use sp_consensus_babe::inherents::BabeInherentData;
 use sp_consensus_slots::Slot;
 use sp_core::{crypto::ByteArray, ExecutionContext};
 use sp_inherents::{CreateInherentDataProviders, InherentData, InherentDataProvider};
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::{
 	generic::OpaqueDigestItemId,
 	traits::{Block as BlockT, Header, NumberFor, SaturatedConversion, Zero},
@@ -404,7 +404,7 @@ where
 /// Parameters for BABE.
 pub struct BabeParams<B: BlockT, C, SC, E, I, SO, L, CIDP, BS> {
 	/// The keystore that manages the keys of the node.
-	pub keystore: SyncCryptoStorePtr,
+	pub keystore: KeystorePtr,
 
 	/// The client to use
 	pub client: Arc<C>,
@@ -711,7 +711,7 @@ struct BabeSlotWorker<B: BlockT, C, E, I, SO, L, BS> {
 	justification_sync_link: L,
 	force_authoring: bool,
 	backoff_authoring_blocks: Option<BS>,
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 	epoch_changes: SharedEpochChanges<B, Epoch>,
 	slot_notification_sinks: SlotNotificationSinks<B>,
 	config: BabeConfiguration,
@@ -834,7 +834,7 @@ where
 		// add it to a digest item.
 		let public_type_pair = public.clone().into();
 		let public = public.to_raw_vec();
-		let signature = SyncCryptoStore::sign_with(
+		let signature = Keystore::sign_with(
 			&*self.keystore,
 			<AuthorityId as AppKey>::ID,
 			&public_type_pair,

substrate/client/consensus/babe/src/tests.rs

@@ -41,8 +41,7 @@ use sp_consensus_vrf::schnorrkel::VRFOutput;
 use sp_core::crypto::Pair;
 use sp_keyring::Sr25519Keyring;
 use sp_keystore::{
-	testing::KeyStore as TestKeyStore, vrf::make_transcript as transcript_from_data,
-	SyncCryptoStore,
+	testing::MemoryKeystore, vrf::make_transcript as transcript_from_data, Keystore,
 };
 use sp_runtime::{
 	generic::{Digest, DigestItem},
@@ -369,9 +368,9 @@ async fn rejects_empty_block() {
 	})
 }
 
-fn create_keystore(authority: Sr25519Keyring) -> SyncCryptoStorePtr {
-	let keystore = Arc::new(TestKeyStore::new());
-	SyncCryptoStore::sr25519_generate_new(&*keystore, BABE, Some(&authority.to_seed()))
+fn create_keystore(authority: Sr25519Keyring) -> KeystorePtr {
+	let keystore = Arc::new(MemoryKeystore::new());
+	Keystore::sr25519_generate_new(&*keystore, BABE, Some(&authority.to_seed()))
 		.expect("Generates authority key");
 	keystore
 }
@@ -638,7 +637,7 @@ fn claim_vrf_check() {
 		v => panic!("Unexpected pre-digest variant {:?}", v),
 	};
 	let transcript = make_transcript_data(&epoch.randomness.clone(), 0.into(), epoch.epoch_index);
-	let sign = SyncCryptoStore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
+	let sign = Keystore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
 		.unwrap()
 		.unwrap();
 	assert_eq!(pre_digest.vrf_output, VRFOutput(sign.output));
@@ -649,7 +648,7 @@ fn claim_vrf_check() {
 		v => panic!("Unexpected pre-digest variant {:?}", v),
 	};
 	let transcript = make_transcript_data(&epoch.randomness.clone(), 1.into(), epoch.epoch_index);
-	let sign = SyncCryptoStore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
+	let sign = Keystore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
 		.unwrap()
 		.unwrap();
 	assert_eq!(pre_digest.vrf_output, VRFOutput(sign.output));
@@ -662,7 +661,7 @@ fn claim_vrf_check() {
 	};
 	let fixed_epoch = epoch.clone_for_slot(slot);
 	let transcript = make_transcript_data(&epoch.randomness.clone(), slot, fixed_epoch.epoch_index);
-	let sign = SyncCryptoStore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
+	let sign = Keystore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
 		.unwrap()
 		.unwrap();
 	assert_eq!(fixed_epoch.epoch_index, 11);
@@ -676,7 +675,7 @@ fn claim_vrf_check() {
 	};
 	let fixed_epoch = epoch.clone_for_slot(slot);
 	let transcript = make_transcript_data(&epoch.randomness.clone(), slot, fixed_epoch.epoch_index);
-	let sign = SyncCryptoStore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
+	let sign = Keystore::sr25519_vrf_sign(&*keystore, AuthorityId::ID, &public, transcript)
 		.unwrap()
 		.unwrap();
 	assert_eq!(fixed_epoch.epoch_index, 11);

substrate/client/consensus/beefy/src/communication/gossip.rs

@@ -245,7 +245,7 @@ where
 mod tests {
 	use sc_keystore::LocalKeystore;
 	use sc_network_test::Block;
-	use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+	use sp_keystore::{Keystore, KeystorePtr};
 
 	use crate::keystore::BeefyKeystore;
 	use sp_consensus_beefy::{
@@ -306,8 +306,8 @@ mod tests {
 	}
 
 	fn sign_commitment<BN: Encode>(who: &Keyring, commitment: &Commitment<BN>) -> Signature {
-		let store: SyncCryptoStorePtr = std::sync::Arc::new(LocalKeystore::in_memory());
-		SyncCryptoStore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&who.to_seed())).unwrap();
+		let store: KeystorePtr = std::sync::Arc::new(LocalKeystore::in_memory());
+		Keystore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&who.to_seed())).unwrap();
 		let beefy_keystore: BeefyKeystore = Some(store).into();
 
 		beefy_keystore.sign(&who.public(), &commitment.encode()).unwrap()

substrate/client/consensus/beefy/src/keystore.rs

@@ -18,7 +18,7 @@
 
 use sp_application_crypto::RuntimeAppPublic;
 use sp_core::keccak_256;
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 
 use log::warn;
 
@@ -33,9 +33,9 @@ use crate::{error, LOG_TARGET};
 pub(crate) type BeefySignatureHasher = sp_runtime::traits::Keccak256;
 
 /// A BEEFY specific keystore implemented as a `Newtype`. This is basically a
-/// wrapper around [`sp_keystore::SyncCryptoStore`] and allows to customize
+/// wrapper around [`sp_keystore::Keystore`] and allows to customize
 /// common cryptographic functionality.
-pub(crate) struct BeefyKeystore(Option<SyncCryptoStorePtr>);
+pub(crate) struct BeefyKeystore(Option<KeystorePtr>);
 
 impl BeefyKeystore {
 	/// Check if the keystore contains a private key for one of the public keys
@@ -50,7 +50,7 @@ impl BeefyKeystore {
 		// we do check for multiple private keys as a key store sanity check.
 		let public: Vec<Public> = keys
 			.iter()
-			.filter(|k| SyncCryptoStore::has_keys(&*store, &[(k.to_raw_vec(), KEY_TYPE)]))
+			.filter(|k| Keystore::has_keys(&*store, &[(k.to_raw_vec(), KEY_TYPE)]))
 			.cloned()
 			.collect();
 
@@ -77,7 +77,7 @@ impl BeefyKeystore {
 		let msg = keccak_256(message);
 		let public = public.as_ref();
 
-		let sig = SyncCryptoStore::ecdsa_sign_prehashed(&*store, KEY_TYPE, public, &msg)
+		let sig = Keystore::ecdsa_sign_prehashed(&*store, KEY_TYPE, public, &msg)
 			.map_err(|e| error::Error::Keystore(e.to_string()))?
 			.ok_or_else(|| error::Error::Signature("ecdsa_sign_prehashed() failed".to_string()))?;
 
@@ -94,7 +94,7 @@ impl BeefyKeystore {
 	pub fn public_keys(&self) -> Result<Vec<Public>, error::Error> {
 		let store = self.0.clone().ok_or_else(|| error::Error::Keystore("no Keystore".into()))?;
 
-		let pk: Vec<Public> = SyncCryptoStore::ecdsa_public_keys(&*store, KEY_TYPE)
+		let pk: Vec<Public> = Keystore::ecdsa_public_keys(&*store, KEY_TYPE)
 			.drain(..)
 			.map(Public::from)
 			.collect();
@@ -110,8 +110,8 @@ impl BeefyKeystore {
 	}
 }
 
-impl From<Option<SyncCryptoStorePtr>> for BeefyKeystore {
-	fn from(store: Option<SyncCryptoStorePtr>) -> BeefyKeystore {
+impl From<Option<KeystorePtr>> for BeefyKeystore {
+	fn from(store: Option<KeystorePtr>) -> BeefyKeystore {
 		BeefyKeystore(store)
 	}
 }
@@ -128,7 +128,7 @@ pub mod tests {
 	use super::*;
 	use crate::error::Error;
 
-	fn keystore() -> SyncCryptoStorePtr {
+	fn keystore() -> KeystorePtr {
 		Arc::new(LocalKeystore::in_memory())
 	}
 
@@ -198,7 +198,7 @@ pub mod tests {
 		let store = keystore();
 
 		let alice: crypto::Public =
-			SyncCryptoStore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Alice.to_seed()))
+			Keystore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Alice.to_seed()))
 				.ok()
 				.unwrap()
 				.into();
@@ -224,7 +224,7 @@ pub mod tests {
 		let store = keystore();
 
 		let alice: crypto::Public =
-			SyncCryptoStore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Alice.to_seed()))
+			Keystore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Alice.to_seed()))
 				.ok()
 				.unwrap()
 				.into();
@@ -243,10 +243,9 @@ pub mod tests {
 	fn sign_error() {
 		let store = keystore();
 
-		let _ =
-			SyncCryptoStore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Bob.to_seed()))
-				.ok()
-				.unwrap();
+		let _ = Keystore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Bob.to_seed()))
+			.ok()
+			.unwrap();
 
 		let store: BeefyKeystore = Some(store).into();
 
@@ -276,7 +275,7 @@ pub mod tests {
 		let store = keystore();
 
 		let alice: crypto::Public =
-			SyncCryptoStore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Alice.to_seed()))
+			Keystore::ecdsa_generate_new(&*store, KEY_TYPE, Some(&Keyring::Alice.to_seed()))
 				.ok()
 				.unwrap()
 				.into();
@@ -302,7 +301,7 @@ pub mod tests {
 		let store = keystore();
 
 		let add_key = |key_type, seed: Option<&str>| {
-			SyncCryptoStore::ecdsa_generate_new(&*store, key_type, seed).unwrap()
+			Keystore::ecdsa_generate_new(&*store, key_type, seed).unwrap()
 		};
 
 		// test keys

substrate/client/consensus/beefy/src/lib.rs

@@ -49,7 +49,7 @@ use sp_consensus_beefy::{
 	crypto::AuthorityId, BeefyApi, MmrRootHash, PayloadProvider, ValidatorSet, BEEFY_ENGINE_ID,
 	GENESIS_AUTHORITY_SET_ID,
 };
-use sp_keystore::SyncCryptoStorePtr;
+use sp_keystore::KeystorePtr;
 use sp_mmr_primitives::MmrApi;
 use sp_runtime::traits::{Block, Zero};
 use std::{collections::VecDeque, marker::PhantomData, sync::Arc};
@@ -197,7 +197,7 @@ pub struct BeefyParams<B: Block, BE, C, N, P, R, S> {
 	/// Runtime Api Provider
 	pub runtime: Arc<R>,
 	/// Local key store
-	pub key_store: Option<SyncCryptoStorePtr>,
+	pub key_store: Option<KeystorePtr>,
 	/// BEEFY voter network params
 	pub network_params: BeefyNetworkParams<B, N, S>,
 	/// Minimal delta between blocks, BEEFY should vote for

substrate/client/consensus/beefy/src/tests.rs

@@ -54,7 +54,7 @@ use sp_consensus_beefy::{
 	VersionedFinalityProof, BEEFY_ENGINE_ID, KEY_TYPE as BeefyKeyType,
 };
 use sp_core::H256;
-use sp_keystore::{testing::KeyStore as TestKeystore, SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{testing::MemoryKeystore, Keystore, KeystorePtr};
 use sp_mmr_primitives::{Error as MmrError, MmrApi};
 use sp_runtime::{
 	codec::Encode,
@@ -339,9 +339,9 @@ pub(crate) fn make_beefy_ids(keys: &[BeefyKeyring]) -> Vec<AuthorityId> {
 	keys.iter().map(|&key| key.public().into()).collect()
 }
 
-pub(crate) fn create_beefy_keystore(authority: BeefyKeyring) -> SyncCryptoStorePtr {
-	let keystore = Arc::new(TestKeystore::new());
-	SyncCryptoStore::ecdsa_generate_new(&*keystore, BeefyKeyType, Some(&authority.to_seed()))
+pub(crate) fn create_beefy_keystore(authority: BeefyKeyring) -> KeystorePtr {
+	let keystore = Arc::new(MemoryKeystore::new());
+	Keystore::ecdsa_generate_new(&*keystore, BeefyKeyType, Some(&authority.to_seed()))
 		.expect("Creates authority key");
 	keystore
 }

substrate/client/consensus/grandpa/src/communication/mod.rs

@@ -49,7 +49,7 @@ use parity_scale_codec::{Decode, Encode};
 use sc_network::{NetworkBlock, NetworkSyncForkRequest, ReputationChange};
 use sc_network_gossip::{GossipEngine, Network as GossipNetwork};
 use sc_telemetry::{telemetry, TelemetryHandle, CONSENSUS_DEBUG, CONSENSUS_INFO};
-use sp_keystore::SyncCryptoStorePtr;
+use sp_keystore::KeystorePtr;
 use sp_runtime::traits::{Block as BlockT, Hash as HashT, Header as HeaderT, NumberFor};
 
 use crate::{
@@ -136,7 +136,7 @@ mod benefit {
 
 /// A type that ties together our local authority id and a keystore where it is
 /// available for signing.
-pub struct LocalIdKeystore((AuthorityId, SyncCryptoStorePtr));
+pub struct LocalIdKeystore((AuthorityId, KeystorePtr));
 
 impl LocalIdKeystore {
 	/// Returns a reference to our local authority id.
@@ -145,13 +145,13 @@ impl LocalIdKeystore {
 	}
 
 	/// Returns a reference to the keystore.
-	fn keystore(&self) -> SyncCryptoStorePtr {
+	fn keystore(&self) -> KeystorePtr {
 		(self.0).1.clone()
 	}
 }
 
-impl From<(AuthorityId, SyncCryptoStorePtr)> for LocalIdKeystore {
-	fn from(inner: (AuthorityId, SyncCryptoStorePtr)) -> LocalIdKeystore {
+impl From<(AuthorityId, KeystorePtr)> for LocalIdKeystore {
+	fn from(inner: (AuthorityId, KeystorePtr)) -> LocalIdKeystore {
 		LocalIdKeystore(inner)
 	}
 }

substrate/client/consensus/grandpa/src/lib.rs

@@ -79,7 +79,7 @@ use sp_consensus_grandpa::{
 	AuthorityList, AuthoritySignature, SetId, CLIENT_LOG_TARGET as LOG_TARGET,
 };
 use sp_core::{crypto::ByteArray, traits::CallContext};
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::{
 	generic::BlockId,
 	traits::{Block as BlockT, NumberFor, Zero},
@@ -228,7 +228,7 @@ pub struct Config {
 	/// Some local identifier of the voter.
 	pub name: Option<String>,
 	/// The keystore that manages the keys of this node.
-	pub keystore: Option<SyncCryptoStorePtr>,
+	pub keystore: Option<KeystorePtr>,
 	/// TelemetryHandle instance.
 	pub telemetry: Option<TelemetryHandle>,
 	/// Chain specific GRANDPA protocol name. See [`crate::protocol_standard_name`].
@@ -623,7 +623,7 @@ fn global_communication<BE, Block: BlockT, C, N, S>(
 	voters: &Arc<VoterSet<AuthorityId>>,
 	client: Arc<C>,
 	network: &NetworkBridge<Block, N, S>,
-	keystore: Option<&SyncCryptoStorePtr>,
+	keystore: Option<&KeystorePtr>,
 	metrics: Option<until_imported::Metrics>,
 ) -> (
 	impl Stream<
@@ -1136,14 +1136,12 @@ where
 /// available.
 fn local_authority_id(
 	voters: &VoterSet<AuthorityId>,
-	keystore: Option<&SyncCryptoStorePtr>,
+	keystore: Option<&KeystorePtr>,
 ) -> Option<AuthorityId> {
 	keystore.and_then(|keystore| {
 		voters
 			.iter()
-			.find(|(p, _)| {
-				SyncCryptoStore::has_keys(&**keystore, &[(p.to_raw_vec(), AuthorityId::ID)])
-			})
+			.find(|(p, _)| Keystore::has_keys(&**keystore, &[(p.to_raw_vec(), AuthorityId::ID)]))
 			.map(|(p, _)| p.clone())
 	})
 }

substrate/client/consensus/grandpa/src/observer.rs

@@ -33,7 +33,7 @@ use sc_utils::mpsc::TracingUnboundedReceiver;
 use sp_blockchain::HeaderMetadata;
 use sp_consensus::SelectChain;
 use sp_consensus_grandpa::AuthorityId;
-use sp_keystore::SyncCryptoStorePtr;
+use sp_keystore::KeystorePtr;
 use sp_runtime::traits::{Block as BlockT, NumberFor};
 
 use crate::{
@@ -220,7 +220,7 @@ struct ObserverWork<B: BlockT, BE, Client, N: NetworkT<B>, S: SyncingT<B>> {
 	client: Arc<Client>,
 	network: NetworkBridge<B, N, S>,
 	persistent_data: PersistentData<B>,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	voter_commands_rx: TracingUnboundedReceiver<VoterCommand<B::Hash, NumberFor<B>>>,
 	justification_sender: Option<GrandpaJustificationSender<B>>,
 	telemetry: Option<TelemetryHandle>,
@@ -240,7 +240,7 @@ where
 		client: Arc<Client>,
 		network: NetworkBridge<B, Network, Syncing>,
 		persistent_data: PersistentData<B>,
-		keystore: Option<SyncCryptoStorePtr>,
+		keystore: Option<KeystorePtr>,
 		voter_commands_rx: TracingUnboundedReceiver<VoterCommand<B::Hash, NumberFor<B>>>,
 		justification_sender: Option<GrandpaJustificationSender<B>>,
 		telemetry: Option<TelemetryHandle>,

substrate/client/consensus/grandpa/src/tests.rs

@@ -40,7 +40,7 @@ use sp_consensus_grandpa::{
 };
 use sp_core::H256;
 use sp_keyring::Ed25519Keyring;
-use sp_keystore::{testing::KeyStore as TestKeyStore, SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{testing::MemoryKeystore, Keystore, KeystorePtr};
 use sp_runtime::{
 	codec::Encode,
 	generic::{BlockId, DigestItem},
@@ -280,9 +280,9 @@ fn make_ids(keys: &[Ed25519Keyring]) -> AuthorityList {
 	keys.iter().map(|&key| key.public().into()).map(|id| (id, 1)).collect()
 }
 
-fn create_keystore(authority: Ed25519Keyring) -> SyncCryptoStorePtr {
-	let keystore = Arc::new(TestKeyStore::new());
-	SyncCryptoStore::ed25519_generate_new(&*keystore, GRANDPA, Some(&authority.to_seed()))
+fn create_keystore(authority: Ed25519Keyring) -> KeystorePtr {
+	let keystore = Arc::new(MemoryKeystore::new());
+	Keystore::ed25519_generate_new(&*keystore, GRANDPA, Some(&authority.to_seed()))
 		.expect("Creates authority key");
 	keystore
 }
@@ -1376,7 +1376,7 @@ type TestEnvironment<N, S, SC, VR> =
 
 fn test_environment_with_select_chain<N, S, VR, SC>(
 	link: &TestLinkHalf,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	network_service: N,
 	sync_service: S,
 	select_chain: SC,
@@ -1428,7 +1428,7 @@ where
 
 fn test_environment<N, S, VR>(
 	link: &TestLinkHalf,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	network_service: N,
 	sync_service: S,
 	voting_rule: VR,

substrate/client/consensus/manual-seal/src/consensus/babe.rs

@@ -29,7 +29,7 @@ use sc_consensus_babe::{
 use sc_consensus_epochs::{
 	descendent_query, EpochHeader, SharedEpochChanges, ViableEpochDescriptor,
 };
-use sp_keystore::SyncCryptoStorePtr;
+use sp_keystore::KeystorePtr;
 use std::{marker::PhantomData, sync::Arc};
 
 use sc_consensus::{BlockImportParams, ForkChoiceStrategy, Verifier};
@@ -53,7 +53,7 @@ use sp_timestamp::TimestampInherentData;
 /// Intended for use with BABE runtimes.
 pub struct BabeConsensusDataProvider<B: BlockT, C, P> {
 	/// shared reference to keystore
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 
 	/// Shared reference to the client.
 	client: Arc<C>,
@@ -143,7 +143,7 @@ where
 {
 	pub fn new(
 		client: Arc<C>,
-		keystore: SyncCryptoStorePtr,
+		keystore: KeystorePtr,
 		epoch_changes: SharedEpochChanges<B, Epoch>,
 		authorities: Vec<(AuthorityId, BabeAuthorityWeight)>,
 	) -> Result<Self, Error> {

substrate/client/keystore/src/local.rs

@@ -17,7 +17,6 @@
 //
 //! Local keystore implementation
 
-use async_trait::async_trait;
 use parking_lot::RwLock;
 use sp_application_crypto::{ecdsa, ed25519, sr25519, AppKey, AppPair, IsWrappedBy};
 use sp_core::{
@@ -29,10 +28,10 @@ use sp_core::{
 };
 use sp_keystore::{
 	vrf::{make_transcript, VRFSignature, VRFTranscriptData},
-	CryptoStore, Error as TraitError, SyncCryptoStore, SyncCryptoStorePtr,
+	Error as TraitError, Keystore, KeystorePtr,
 };
 use std::{
-	collections::{HashMap, HashSet},
+	collections::HashMap,
 	fs::{self, File},
 	io::Write,
 	path::PathBuf,
@@ -69,101 +68,7 @@ impl LocalKeystore {
 	}
 }
 
-#[async_trait]
-impl CryptoStore for LocalKeystore {
-	async fn keys(
-		&self,
-		id: KeyTypeId,
-	) -> std::result::Result<Vec<CryptoTypePublicPair>, TraitError> {
-		SyncCryptoStore::keys(self, id)
-	}
-
-	async fn sr25519_public_keys(&self, id: KeyTypeId) -> Vec<sr25519::Public> {
-		SyncCryptoStore::sr25519_public_keys(self, id)
-	}
-
-	async fn sr25519_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> std::result::Result<sr25519::Public, TraitError> {
-		SyncCryptoStore::sr25519_generate_new(self, id, seed)
-	}
-
-	async fn ed25519_public_keys(&self, id: KeyTypeId) -> Vec<ed25519::Public> {
-		SyncCryptoStore::ed25519_public_keys(self, id)
-	}
-
-	async fn ed25519_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> std::result::Result<ed25519::Public, TraitError> {
-		SyncCryptoStore::ed25519_generate_new(self, id, seed)
-	}
-
-	async fn ecdsa_public_keys(&self, id: KeyTypeId) -> Vec<ecdsa::Public> {
-		SyncCryptoStore::ecdsa_public_keys(self, id)
-	}
-
-	async fn ecdsa_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> std::result::Result<ecdsa::Public, TraitError> {
-		SyncCryptoStore::ecdsa_generate_new(self, id, seed)
-	}
-
-	async fn insert_unknown(
-		&self,
-		id: KeyTypeId,
-		suri: &str,
-		public: &[u8],
-	) -> std::result::Result<(), ()> {
-		SyncCryptoStore::insert_unknown(self, id, suri, public)
-	}
-
-	async fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool {
-		SyncCryptoStore::has_keys(self, public_keys)
-	}
-
-	async fn supported_keys(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-	) -> std::result::Result<Vec<CryptoTypePublicPair>, TraitError> {
-		SyncCryptoStore::supported_keys(self, id, keys)
-	}
-
-	async fn sign_with(
-		&self,
-		id: KeyTypeId,
-		key: &CryptoTypePublicPair,
-		msg: &[u8],
-	) -> std::result::Result<Option<Vec<u8>>, TraitError> {
-		SyncCryptoStore::sign_with(self, id, key, msg)
-	}
-
-	async fn sr25519_vrf_sign(
-		&self,
-		key_type: KeyTypeId,
-		public: &sr25519::Public,
-		transcript_data: VRFTranscriptData,
-	) -> std::result::Result<Option<VRFSignature>, TraitError> {
-		SyncCryptoStore::sr25519_vrf_sign(self, key_type, public, transcript_data)
-	}
-
-	async fn ecdsa_sign_prehashed(
-		&self,
-		id: KeyTypeId,
-		public: &ecdsa::Public,
-		msg: &[u8; 32],
-	) -> std::result::Result<Option<ecdsa::Signature>, TraitError> {
-		SyncCryptoStore::ecdsa_sign_prehashed(self, id, public, msg)
-	}
-}
-
-impl SyncCryptoStore for LocalKeystore {
+impl Keystore for LocalKeystore {
 	fn keys(&self, id: KeyTypeId) -> std::result::Result<Vec<CryptoTypePublicPair>, TraitError> {
 		let raw_keys = self.0.read().raw_public_keys(id)?;
 		Ok(raw_keys.into_iter().fold(Vec::new(), |mut v, k| {
@@ -174,15 +79,6 @@ impl SyncCryptoStore for LocalKeystore {
 		}))
 	}
 
-	fn supported_keys(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-	) -> std::result::Result<Vec<CryptoTypePublicPair>, TraitError> {
-		let all_keys = SyncCryptoStore::keys(self, id)?.into_iter().collect::<HashSet<_>>();
-		Ok(keys.into_iter().filter(|key| all_keys.contains(key)).collect::<Vec<_>>())
-	}
-
 	fn sign_with(
 		&self,
 		id: KeyTypeId,
@@ -308,13 +204,13 @@ impl SyncCryptoStore for LocalKeystore {
 		Ok(pair.public())
 	}
 
-	fn insert_unknown(
+	fn insert(
 		&self,
 		key_type: KeyTypeId,
 		suri: &str,
 		public: &[u8],
 	) -> std::result::Result<(), ()> {
-		self.0.write().insert_unknown(key_type, suri, public).map_err(|_| ())
+		self.0.write().insert(key_type, suri, public).map_err(|_| ())
 	}
 
 	fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool {
@@ -352,14 +248,8 @@ impl SyncCryptoStore for LocalKeystore {
 	}
 }
 
-impl Into<SyncCryptoStorePtr> for LocalKeystore {
-	fn into(self) -> SyncCryptoStorePtr {
-		Arc::new(self)
-	}
-}
-
-impl Into<Arc<dyn CryptoStore>> for LocalKeystore {
-	fn into(self) -> Arc<dyn CryptoStore> {
+impl Into<KeystorePtr> for LocalKeystore {
+	fn into(self) -> KeystorePtr {
 		Arc::new(self)
 	}
 }
@@ -414,7 +304,7 @@ impl KeystoreInner {
 	/// Insert a new key with anonymous crypto.
 	///
 	/// Places it into the file system store, if a path is configured.
-	fn insert_unknown(&self, key_type: KeyTypeId, suri: &str, public: &[u8]) -> Result<()> {
+	fn insert(&self, key_type: KeyTypeId, suri: &str, public: &[u8]) -> Result<()> {
 		if let Some(path) = self.key_file_path(public, key_type) {
 			Self::write_to_file(path, suri)?;
 		}
@@ -614,12 +504,9 @@ mod tests {
 		let key: ed25519::AppPair = store.0.write().generate().unwrap();
 		let key2 = ed25519::Pair::generate().0;
 
-		assert!(!SyncCryptoStore::has_keys(
-			&store,
-			&[(key2.public().to_vec(), ed25519::AppPublic::ID)]
-		));
+		assert!(!Keystore::has_keys(&store, &[(key2.public().to_vec(), ed25519::AppPublic::ID)]));
 
-		assert!(!SyncCryptoStore::has_keys(
+		assert!(!Keystore::has_keys(
 			&store,
 			&[
 				(key2.public().to_vec(), ed25519::AppPublic::ID),
@@ -627,10 +514,7 @@ mod tests {
 			],
 		));
 
-		assert!(SyncCryptoStore::has_keys(
-			&store,
-			&[(key.public().to_raw_vec(), ed25519::AppPublic::ID)]
-		));
+		assert!(Keystore::has_keys(&store, &[(key.public().to_raw_vec(), ed25519::AppPublic::ID)]));
 	}
 
 	#[test]
@@ -723,7 +607,7 @@ mod tests {
 		let key_pair = sr25519::AppPair::from_string(secret_uri, None).expect("Generates key pair");
 
 		store
-			.insert_unknown(SR25519, secret_uri, key_pair.public().as_ref())
+			.insert(SR25519, secret_uri, key_pair.public().as_ref())
 			.expect("Inserts unknown key");
 
 		let store_key_pair = store
@@ -742,7 +626,7 @@ mod tests {
 		let file_name = temp_dir.path().join(array_bytes::bytes2hex("", &SR25519.0[..2]));
 		fs::write(file_name, "test").expect("Invalid file is written");
 
-		assert!(SyncCryptoStore::sr25519_public_keys(&store, SR25519).is_empty());
+		assert!(Keystore::sr25519_public_keys(&store, SR25519).is_empty());
 	}
 
 	#[test]
@@ -750,23 +634,23 @@ mod tests {
 		let temp_dir = TempDir::new().unwrap();
 		let store = LocalKeystore::open(temp_dir.path(), None).unwrap();
 		let _alice_tmp_key =
-			SyncCryptoStore::sr25519_generate_new(&store, TEST_KEY_TYPE, Some("//Alice")).unwrap();
+			Keystore::sr25519_generate_new(&store, TEST_KEY_TYPE, Some("//Alice")).unwrap();
 
-		assert_eq!(SyncCryptoStore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 1);
+		assert_eq!(Keystore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 1);
 
 		drop(store);
 		let store = LocalKeystore::open(temp_dir.path(), None).unwrap();
-		assert_eq!(SyncCryptoStore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 0);
+		assert_eq!(Keystore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 0);
 	}
 
 	#[test]
 	fn generate_can_be_fetched_in_memory() {
 		let store = LocalKeystore::in_memory();
-		SyncCryptoStore::sr25519_generate_new(&store, TEST_KEY_TYPE, Some("//Alice")).unwrap();
+		Keystore::sr25519_generate_new(&store, TEST_KEY_TYPE, Some("//Alice")).unwrap();
 
-		assert_eq!(SyncCryptoStore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 1);
-		SyncCryptoStore::sr25519_generate_new(&store, TEST_KEY_TYPE, None).unwrap();
-		assert_eq!(SyncCryptoStore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 2);
+		assert_eq!(Keystore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 1);
+		Keystore::sr25519_generate_new(&store, TEST_KEY_TYPE, None).unwrap();
+		assert_eq!(Keystore::sr25519_public_keys(&store, TEST_KEY_TYPE).len(), 2);
 	}
 
 	#[test]
@@ -777,7 +661,7 @@ mod tests {
 		let temp_dir = TempDir::new().unwrap();
 		let store = LocalKeystore::open(temp_dir.path(), None).unwrap();
 
-		let public = SyncCryptoStore::sr25519_generate_new(&store, TEST_KEY_TYPE, None).unwrap();
+		let public = Keystore::sr25519_generate_new(&store, TEST_KEY_TYPE, None).unwrap();
 
 		let path = store.0.read().key_file_path(public.as_ref(), TEST_KEY_TYPE).unwrap();
 		let permissions = File::open(path).unwrap().metadata().unwrap().permissions();

substrate/client/rpc-api/src/author/error.rs

@@ -47,7 +47,7 @@ pub enum Error {
 	BadKeyType,
 	/// Some random issue with the key store. Shouldn't happen.
 	#[error("The key store is unavailable")]
-	KeyStoreUnavailable,
+	KeystoreUnavailable,
 	/// Invalid session keys encoding.
 	#[error("Session keys are not encoded correctly")]
 	InvalidSessionKeys,

substrate/client/rpc/src/author/mod.rs

@@ -40,7 +40,7 @@ use sc_transaction_pool_api::{
 use sp_api::ProvideRuntimeApi;
 use sp_blockchain::HeaderBackend;
 use sp_core::Bytes;
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::{generic, traits::Block as BlockT};
 use sp_session::SessionKeys;
 
@@ -55,7 +55,7 @@ pub struct Author<P, Client> {
 	/// Transactions pool
 	pool: Arc<P>,
 	/// The key store.
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 	/// Whether to deny unsafe calls
 	deny_unsafe: DenyUnsafe,
 	/// Executor to spawn subscriptions.
@@ -67,7 +67,7 @@ impl<P, Client> Author<P, Client> {
 	pub fn new(
 		client: Arc<Client>,
 		pool: Arc<P>,
-		keystore: SyncCryptoStorePtr,
+		keystore: KeystorePtr,
 		deny_unsafe: DenyUnsafe,
 		executor: SubscriptionTaskExecutor,
 	) -> Self {
@@ -112,8 +112,8 @@ where
 		self.deny_unsafe.check_if_safe()?;
 
 		let key_type = key_type.as_str().try_into().map_err(|_| Error::BadKeyType)?;
-		SyncCryptoStore::insert_unknown(&*self.keystore, key_type, &suri, &public[..])
-			.map_err(|_| Error::KeyStoreUnavailable)?;
+		Keystore::insert(&*self.keystore, key_type, &suri, &public[..])
+			.map_err(|_| Error::KeystoreUnavailable)?;
 		Ok(())
 	}
 
@@ -139,14 +139,14 @@ where
 			.map_err(|e| Error::Client(Box::new(e)))?
 			.ok_or(Error::InvalidSessionKeys)?;
 
-		Ok(SyncCryptoStore::has_keys(&*self.keystore, &keys))
+		Ok(Keystore::has_keys(&*self.keystore, &keys))
 	}
 
 	fn has_key(&self, public_key: Bytes, key_type: String) -> RpcResult<bool> {
 		self.deny_unsafe.check_if_safe()?;
 
 		let key_type = key_type.as_str().try_into().map_err(|_| Error::BadKeyType)?;
-		Ok(SyncCryptoStore::has_keys(&*self.keystore, &[(public_key.to_vec(), key_type)]))
+		Ok(Keystore::has_keys(&*self.keystore, &[(public_key.to_vec(), key_type)]))
 	}
 
 	fn pending_extrinsics(&self) -> RpcResult<Vec<Bytes>> {

substrate/client/rpc/src/author/tests.rs

@@ -36,7 +36,7 @@ use sp_core::{
 	testing::{ED25519, SR25519},
 	H256,
 };
-use sp_keystore::testing::KeyStore;
+use sp_keystore::testing::MemoryKeystore;
 use std::sync::Arc;
 use substrate_test_runtime_client::{
 	self,
@@ -58,13 +58,13 @@ type FullTransactionPool = BasicPool<FullChainApi<Client<Backend>, Block>, Block
 
 struct TestSetup {
 	pub client: Arc<Client<Backend>>,
-	pub keystore: Arc<KeyStore>,
+	pub keystore: Arc<MemoryKeystore>,
 	pub pool: Arc<FullTransactionPool>,
 }
 
 impl Default for TestSetup {
 	fn default() -> Self {
-		let keystore = Arc::new(KeyStore::new());
+		let keystore = Arc::new(MemoryKeystore::new());
 		let client_builder = substrate_test_runtime_client::TestClientBuilder::new();
 		let client = Arc::new(client_builder.set_keystore(keystore.clone()).build());
 
@@ -225,7 +225,7 @@ async fn author_should_insert_key() {
 		keypair.public().0.to_vec().into(),
 	);
 	api.call::<_, ()>("author_insertKey", params).await.unwrap();
-	let pubkeys = SyncCryptoStore::keys(&*setup.keystore, ED25519).unwrap();
+	let pubkeys = Keystore::keys(&*setup.keystore, ED25519).unwrap();
 
 	assert!(
 		pubkeys.contains(&CryptoTypePublicPair(ed25519::CRYPTO_ID, keypair.public().to_raw_vec()))
@@ -240,8 +240,8 @@ async fn author_should_rotate_keys() {
 	let new_pubkeys: Bytes = api.call("author_rotateKeys", EmptyParams::new()).await.unwrap();
 	let session_keys =
 		SessionKeys::decode(&mut &new_pubkeys[..]).expect("SessionKeys decode successfully");
-	let ed25519_pubkeys = SyncCryptoStore::keys(&*setup.keystore, ED25519).unwrap();
-	let sr25519_pubkeys = SyncCryptoStore::keys(&*setup.keystore, SR25519).unwrap();
+	let ed25519_pubkeys = Keystore::keys(&*setup.keystore, ED25519).unwrap();
+	let sr25519_pubkeys = Keystore::keys(&*setup.keystore, SR25519).unwrap();
 	assert!(ed25519_pubkeys
 		.contains(&CryptoTypePublicPair(ed25519::CRYPTO_ID, session_keys.ed25519.to_raw_vec())));
 	assert!(sr25519_pubkeys

substrate/client/service/src/builder.rs

@@ -67,7 +67,7 @@ use sp_consensus::block_validation::{
 	BlockAnnounceValidator, Chain, DefaultBlockAnnounceValidator,
 };
 use sp_core::traits::{CodeExecutor, SpawnNamed};
-use sp_keystore::{CryptoStore, SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::traits::{Block as BlockT, BlockIdTo, NumberFor, Zero};
 use std::{str::FromStr, sync::Arc, time::SystemTime};
 
@@ -85,26 +85,22 @@ pub type TFullCallExecutor<TBl, TExec> =
 type TFullParts<TBl, TRtApi, TExec> =
 	(TFullClient<TBl, TRtApi, TExec>, Arc<TFullBackend<TBl>>, KeystoreContainer, TaskManager);
 
-trait AsCryptoStoreRef {
-	fn keystore_ref(&self) -> Arc<dyn CryptoStore>;
-	fn sync_keystore_ref(&self) -> Arc<dyn SyncCryptoStore>;
+trait AsKeystoreRef {
+	fn keystore_ref(&self) -> Arc<dyn Keystore>;
 }
 
-impl<T> AsCryptoStoreRef for Arc<T>
+impl<T> AsKeystoreRef for Arc<T>
 where
-	T: CryptoStore + SyncCryptoStore + 'static,
+	T: Keystore + 'static,
 {
-	fn keystore_ref(&self) -> Arc<dyn CryptoStore> {
-		self.clone()
-	}
-	fn sync_keystore_ref(&self) -> Arc<dyn SyncCryptoStore> {
+	fn keystore_ref(&self) -> Arc<dyn Keystore> {
 		self.clone()
 	}
 }
 
 /// Construct and hold different layers of Keystore wrappers
 pub struct KeystoreContainer {
-	remote: Option<Box<dyn AsCryptoStoreRef>>,
+	remote: Option<Box<dyn AsKeystoreRef>>,
 	local: Arc<LocalKeystore>,
 }
 
@@ -127,13 +123,13 @@ impl KeystoreContainer {
 	/// stick around.
 	pub fn set_remote_keystore<T>(&mut self, remote: Arc<T>)
 	where
-		T: CryptoStore + SyncCryptoStore + 'static,
+		T: Keystore + 'static,
 	{
 		self.remote = Some(Box::new(remote))
 	}
 
-	/// Returns an adapter to the asynchronous keystore that implements `CryptoStore`
-	pub fn keystore(&self) -> Arc<dyn CryptoStore> {
+	/// Returns an adapter to a `Keystore` implementation.
+	pub fn keystore(&self) -> Arc<dyn Keystore> {
 		if let Some(c) = self.remote.as_ref() {
 			c.keystore_ref()
 		} else {
@@ -141,15 +137,6 @@ impl KeystoreContainer {
 		}
 	}
 
-	/// Returns the synchronous keystore wrapper
-	pub fn sync_keystore(&self) -> SyncCryptoStorePtr {
-		if let Some(c) = self.remote.as_ref() {
-			c.sync_keystore_ref()
-		} else {
-			self.local.clone() as SyncCryptoStorePtr
-		}
-	}
-
 	/// Returns the local keystore if available
 	///
 	/// The function will return None if the available keystore is not a local keystore.
@@ -234,7 +221,7 @@ where
 	let client = {
 		let extensions = sc_client_api::execution_extensions::ExecutionExtensions::new(
 			config.execution_strategies.clone(),
-			Some(keystore_container.sync_keystore()),
+			Some(keystore_container.keystore()),
 			sc_offchain::OffchainDb::factory_from_backend(&*backend),
 		);
 
@@ -374,7 +361,7 @@ pub struct SpawnTasksParams<'a, TBl: BlockT, TCl, TExPool, TRpc, Backend> {
 	/// A task manager returned by `new_full_parts`.
 	pub task_manager: &'a mut TaskManager,
 	/// A shared keystore returned by `new_full_parts`.
-	pub keystore: SyncCryptoStorePtr,
+	pub keystore: KeystorePtr,
 	/// A shared transaction pool.
 	pub transaction_pool: Arc<TExPool>,
 	/// Builds additional [`RpcModule`]s that should be added to the server
@@ -645,7 +632,7 @@ fn gen_rpc_module<TBl, TBackend, TCl, TRpc, TExPool>(
 	spawn_handle: SpawnTaskHandle,
 	client: Arc<TCl>,
 	transaction_pool: Arc<TExPool>,
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 	system_rpc_tx: TracingUnboundedSender<sc_rpc::system::Request<TBl>>,
 	config: &Configuration,
 	backend: Arc<TBackend>,

substrate/client/service/src/client/client.rs

@@ -65,7 +65,7 @@ use sp_core::{
 	traits::SpawnNamed,
 };
 #[cfg(feature = "test-helpers")]
-use sp_keystore::SyncCryptoStorePtr;
+use sp_keystore::KeystorePtr;
 use sp_runtime::{
 	generic::{BlockId, SignedBlock},
 	traits::{
@@ -161,7 +161,7 @@ pub fn new_in_mem<E, Block, G, RA>(
 	backend: Arc<in_mem::Backend<Block>>,
 	executor: E,
 	genesis_block_builder: G,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	prometheus_registry: Option<Registry>,
 	telemetry: Option<TelemetryHandle>,
 	spawn_handle: Box<dyn SpawnNamed>,
@@ -224,7 +224,7 @@ pub fn new_with_backend<B, E, Block, G, RA>(
 	backend: Arc<B>,
 	executor: E,
 	genesis_block_builder: G,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	spawn_handle: Box<dyn SpawnNamed>,
 	prometheus_registry: Option<Registry>,
 	telemetry: Option<TelemetryHandle>,

substrate/frame/benchmarking/src/baseline.rs

@@ -160,12 +160,12 @@ pub mod mock {
 	impl super::Config for Test {}
 
 	pub fn new_test_ext() -> sp_io::TestExternalities {
-		use sp_keystore::{testing::KeyStore, KeystoreExt, SyncCryptoStorePtr};
+		use sp_keystore::{testing::MemoryKeystore, KeystoreExt, KeystorePtr};
 		use sp_std::sync::Arc;
 
 		let t = frame_system::GenesisConfig::default().build_storage::<Test>().unwrap();
 		let mut ext = sp_io::TestExternalities::new(t);
-		ext.register_extension(KeystoreExt(Arc::new(KeyStore::new()) as SyncCryptoStorePtr));
+		ext.register_extension(KeystoreExt(Arc::new(MemoryKeystore::new()) as KeystorePtr));
 
 		ext
 	}

substrate/frame/contracts/src/tests.rs

@@ -44,7 +44,7 @@ use frame_support::{
 use frame_system::{self as system, EventRecord, Phase};
 use pretty_assertions::{assert_eq, assert_ne};
 use sp_io::hashing::blake2_256;
-use sp_keystore::{testing::KeyStore, KeystoreExt};
+use sp_keystore::{testing::MemoryKeystore, KeystoreExt};
 use sp_runtime::{
 	testing::{Header, H256},
 	traits::{BlakeTwo256, Convert, Hash, IdentityLookup},
@@ -440,7 +440,7 @@ impl ExtBuilder {
 			.assimilate_storage(&mut t)
 			.unwrap();
 		let mut ext = sp_io::TestExternalities::new(t);
-		ext.register_extension(KeystoreExt(Arc::new(KeyStore::new())));
+		ext.register_extension(KeystoreExt(Arc::new(MemoryKeystore::new())));
 		ext.execute_with(|| System::set_block_number(1));
 		ext
 	}

substrate/frame/examples/offchain-worker/src/tests.rs

@@ -29,7 +29,7 @@ use sp_core::{
 };
 use std::sync::Arc;
 
-use sp_keystore::{testing::KeyStore, KeystoreExt, SyncCryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore, KeystoreExt};
 use sp_runtime::{
 	testing::{Header, TestXt},
 	traits::{BlakeTwo256, Extrinsic as ExtrinsicT, IdentifyAccount, IdentityLookup, Verify},
@@ -205,8 +205,8 @@ fn should_submit_signed_transaction_on_chain() {
 
 	let (offchain, offchain_state) = testing::TestOffchainExt::new();
 	let (pool, pool_state) = testing::TestTransactionPoolExt::new();
-	let keystore = KeyStore::new();
-	SyncCryptoStore::sr25519_generate_new(
+	let keystore = MemoryKeystore::new();
+	Keystore::sr25519_generate_new(
 		&keystore,
 		crate::crypto::Public::ID,
 		Some(&format!("{}/hunter1", PHRASE)),
@@ -239,16 +239,16 @@ fn should_submit_unsigned_transaction_on_chain_for_any_account() {
 	let (offchain, offchain_state) = testing::TestOffchainExt::new();
 	let (pool, pool_state) = testing::TestTransactionPoolExt::new();
 
-	let keystore = KeyStore::new();
+	let keystore = MemoryKeystore::new();
 
-	SyncCryptoStore::sr25519_generate_new(
+	Keystore::sr25519_generate_new(
 		&keystore,
 		crate::crypto::Public::ID,
 		Some(&format!("{}/hunter1", PHRASE)),
 	)
 	.unwrap();
 
-	let public_key = *SyncCryptoStore::sr25519_public_keys(&keystore, crate::crypto::Public::ID)
+	let public_key = *Keystore::sr25519_public_keys(&keystore, crate::crypto::Public::ID)
 		.get(0)
 		.unwrap();
 
@@ -298,16 +298,16 @@ fn should_submit_unsigned_transaction_on_chain_for_all_accounts() {
 	let (offchain, offchain_state) = testing::TestOffchainExt::new();
 	let (pool, pool_state) = testing::TestTransactionPoolExt::new();
 
-	let keystore = KeyStore::new();
+	let keystore = MemoryKeystore::new();
 
-	SyncCryptoStore::sr25519_generate_new(
+	Keystore::sr25519_generate_new(
 		&keystore,
 		crate::crypto::Public::ID,
 		Some(&format!("{}/hunter1", PHRASE)),
 	)
 	.unwrap();
 
-	let public_key = *SyncCryptoStore::sr25519_public_keys(&keystore, crate::crypto::Public::ID)
+	let public_key = *Keystore::sr25519_public_keys(&keystore, crate::crypto::Public::ID)
 		.get(0)
 		.unwrap();
 
@@ -355,7 +355,7 @@ fn should_submit_raw_unsigned_transaction_on_chain() {
 	let (offchain, offchain_state) = testing::TestOffchainExt::new();
 	let (pool, pool_state) = testing::TestTransactionPoolExt::new();
 
-	let keystore = KeyStore::new();
+	let keystore = MemoryKeystore::new();
 
 	let mut t = sp_io::TestExternalities::default();
 	t.register_extension(OffchainWorkerExt::new(offchain));

substrate/frame/nfts/src/mock.rs

@@ -25,7 +25,7 @@ use frame_support::{
 	traits::{AsEnsureOriginWithArg, ConstU32, ConstU64},
 };
 use sp_core::H256;
-use sp_keystore::{testing::KeyStore, KeystoreExt};
+use sp_keystore::{testing::MemoryKeystore, KeystoreExt};
 use sp_runtime::{
 	testing::Header,
 	traits::{BlakeTwo256, IdentifyAccount, IdentityLookup, Verify},
@@ -130,7 +130,7 @@ impl Config for Test {
 pub(crate) fn new_test_ext() -> sp_io::TestExternalities {
 	let t = frame_system::GenesisConfig::default().build_storage::<Test>().unwrap();
 
-	let keystore = KeyStore::new();
+	let keystore = MemoryKeystore::new();
 	let mut ext = sp_io::TestExternalities::new(t);
 	ext.register_extension(KeystoreExt(Arc::new(keystore)));
 	ext.execute_with(|| System::set_block_number(1));

substrate/primitives/application-crypto/test/src/ecdsa.rs

@@ -19,7 +19,7 @@
 use sp_api::ProvideRuntimeApi;
 use sp_application_crypto::ecdsa::{AppPair, AppPublic};
 use sp_core::{crypto::Pair, testing::ECDSA};
-use sp_keystore::{testing::KeyStore, SyncCryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore};
 use std::sync::Arc;
 use substrate_test_runtime_client::{
 	runtime::TestAPI, DefaultTestClientBuilderExt, TestClientBuilder, TestClientBuilderExt,
@@ -27,14 +27,14 @@ use substrate_test_runtime_client::{
 
 #[test]
 fn ecdsa_works_in_runtime() {
-	let keystore = Arc::new(KeyStore::new());
+	let keystore = Arc::new(MemoryKeystore::new());
 	let test_client = TestClientBuilder::new().set_keystore(keystore.clone()).build();
 	let (signature, public) = test_client
 		.runtime_api()
 		.test_ecdsa_crypto(test_client.chain_info().genesis_hash)
 		.expect("Tests `ecdsa` crypto.");
 
-	let supported_keys = SyncCryptoStore::keys(&*keystore, ECDSA).unwrap();
+	let supported_keys = Keystore::keys(&*keystore, ECDSA).unwrap();
 	assert!(supported_keys.contains(&public.clone().into()));
 	assert!(AppPair::verify(&signature, "ecdsa", &AppPublic::from(public)));
 }

substrate/primitives/application-crypto/test/src/ed25519.rs

@@ -20,7 +20,7 @@
 use sp_api::ProvideRuntimeApi;
 use sp_application_crypto::ed25519::{AppPair, AppPublic};
 use sp_core::{crypto::Pair, testing::ED25519};
-use sp_keystore::{testing::KeyStore, SyncCryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore};
 use std::sync::Arc;
 use substrate_test_runtime_client::{
 	runtime::TestAPI, DefaultTestClientBuilderExt, TestClientBuilder, TestClientBuilderExt,
@@ -28,14 +28,14 @@ use substrate_test_runtime_client::{
 
 #[test]
 fn ed25519_works_in_runtime() {
-	let keystore = Arc::new(KeyStore::new());
+	let keystore = Arc::new(MemoryKeystore::new());
 	let test_client = TestClientBuilder::new().set_keystore(keystore.clone()).build();
 	let (signature, public) = test_client
 		.runtime_api()
 		.test_ed25519_crypto(test_client.chain_info().genesis_hash)
 		.expect("Tests `ed25519` crypto.");
 
-	let supported_keys = SyncCryptoStore::keys(&*keystore, ED25519).unwrap();
+	let supported_keys = Keystore::keys(&*keystore, ED25519).unwrap();
 	assert!(supported_keys.contains(&public.clone().into()));
 	assert!(AppPair::verify(&signature, "ed25519", &AppPublic::from(public)));
 }

substrate/primitives/application-crypto/test/src/sr25519.rs

@@ -20,7 +20,7 @@
 use sp_api::ProvideRuntimeApi;
 use sp_application_crypto::sr25519::{AppPair, AppPublic};
 use sp_core::{crypto::Pair, testing::SR25519};
-use sp_keystore::{testing::KeyStore, SyncCryptoStore};
+use sp_keystore::{testing::MemoryKeystore, Keystore};
 use std::sync::Arc;
 use substrate_test_runtime_client::{
 	runtime::TestAPI, DefaultTestClientBuilderExt, TestClientBuilder, TestClientBuilderExt,
@@ -28,14 +28,14 @@ use substrate_test_runtime_client::{
 
 #[test]
 fn sr25519_works_in_runtime() {
-	let keystore = Arc::new(KeyStore::new());
+	let keystore = Arc::new(MemoryKeystore::new());
 	let test_client = TestClientBuilder::new().set_keystore(keystore.clone()).build();
 	let (signature, public) = test_client
 		.runtime_api()
 		.test_sr25519_crypto(test_client.chain_info().genesis_hash)
 		.expect("Tests `sr25519` crypto.");
 
-	let supported_keys = SyncCryptoStore::keys(&*keystore, SR25519).unwrap();
+	let supported_keys = Keystore::keys(&*keystore, SR25519).unwrap();
 	assert!(supported_keys.contains(&public.clone().into()));
 	assert!(AppPair::verify(&signature, "sr25519", &AppPublic::from(public)));
 }

substrate/primitives/consensus/beefy/src/commitment.rs

@@ -253,7 +253,7 @@ mod tests {
 	use crate::{crypto, known_payloads, KEY_TYPE};
 	use codec::Decode;
 	use sp_core::{keccak_256, Pair};
-	use sp_keystore::{testing::KeyStore, SyncCryptoStore, SyncCryptoStorePtr};
+	use sp_keystore::{testing::MemoryKeystore, Keystore, KeystorePtr};
 
 	type TestCommitment = Commitment<u128>;
 	type TestSignedCommitment = SignedCommitment<u128, crypto::Signature>;
@@ -263,20 +263,18 @@ mod tests {
 
 	// The mock signatures are equivalent to the ones produced by the BEEFY keystore
 	fn mock_signatures() -> (crypto::Signature, crypto::Signature) {
-		let store: SyncCryptoStorePtr = KeyStore::new().into();
+		let store: KeystorePtr = MemoryKeystore::new().into();
 
 		let alice = sp_core::ecdsa::Pair::from_string("//Alice", None).unwrap();
-		let _ =
-			SyncCryptoStore::insert_unknown(&*store, KEY_TYPE, "//Alice", alice.public().as_ref())
-				.unwrap();
+		let _ = Keystore::insert(&*store, KEY_TYPE, "//Alice", alice.public().as_ref()).unwrap();
 
 		let msg = keccak_256(b"This is the first message");
-		let sig1 = SyncCryptoStore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
+		let sig1 = Keystore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
 			.unwrap()
 			.unwrap();
 
 		let msg = keccak_256(b"This is the second message");
-		let sig2 = SyncCryptoStore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
+		let sig2 = Keystore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
 			.unwrap()
 			.unwrap();
 

substrate/primitives/consensus/beefy/src/witness.rs

@@ -76,7 +76,7 @@ impl<TBlockNumber, TMerkleRoot> SignedCommitmentWitness<TBlockNumber, TMerkleRoo
 mod tests {
 
 	use sp_core::{keccak_256, Pair};
-	use sp_keystore::{testing::KeyStore, SyncCryptoStore, SyncCryptoStorePtr};
+	use sp_keystore::{testing::MemoryKeystore, Keystore, KeystorePtr};
 
 	use super::*;
 	use codec::Decode;
@@ -90,20 +90,18 @@ mod tests {
 
 	// The mock signatures are equivalent to the ones produced by the BEEFY keystore
 	fn mock_signatures() -> (crypto::Signature, crypto::Signature) {
-		let store: SyncCryptoStorePtr = KeyStore::new().into();
+		let store: KeystorePtr = MemoryKeystore::new().into();
 
 		let alice = sp_core::ecdsa::Pair::from_string("//Alice", None).unwrap();
-		let _ =
-			SyncCryptoStore::insert_unknown(&*store, KEY_TYPE, "//Alice", alice.public().as_ref())
-				.unwrap();
+		let _ = Keystore::insert(&*store, KEY_TYPE, "//Alice", alice.public().as_ref()).unwrap();
 
 		let msg = keccak_256(b"This is the first message");
-		let sig1 = SyncCryptoStore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
+		let sig1 = Keystore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
 			.unwrap()
 			.unwrap();
 
 		let msg = keccak_256(b"This is the second message");
-		let sig2 = SyncCryptoStore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
+		let sig2 = Keystore::ecdsa_sign_prehashed(&*store, KEY_TYPE, &alice.public(), &msg)
 			.unwrap()
 			.unwrap();
 

substrate/primitives/consensus/grandpa/src/lib.rs

@@ -28,7 +28,7 @@ use serde::Serialize;
 use codec::{Codec, Decode, Encode, Input};
 use scale_info::TypeInfo;
 #[cfg(feature = "std")]
-use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+use sp_keystore::{Keystore, KeystorePtr};
 use sp_runtime::{
 	traits::{Header as HeaderT, NumberFor},
 	ConsensusEngineId, RuntimeDebug,
@@ -444,7 +444,7 @@ where
 /// Localizes the message to the given set and round and signs the payload.
 #[cfg(feature = "std")]
 pub fn sign_message<H, N>(
-	keystore: SyncCryptoStorePtr,
+	keystore: KeystorePtr,
 	message: grandpa::Message<H, N>,
 	public: AuthorityId,
 	round: RoundNumber,
@@ -458,7 +458,7 @@ where
 	use sp_core::crypto::Public;
 
 	let encoded = localized_payload(round, set_id, &message);
-	let signature = SyncCryptoStore::sign_with(
+	let signature = Keystore::sign_with(
 		&*keystore,
 		AuthorityId::ID,
 		&public.to_public_crypto_pair(),

substrate/primitives/io/src/lib.rs

@@ -43,7 +43,7 @@ use sp_core::{
 	traits::TaskExecutorExt,
 };
 #[cfg(feature = "std")]
-use sp_keystore::{KeystoreExt, SyncCryptoStore};
+use sp_keystore::{Keystore, KeystoreExt};
 
 use sp_core::{
 	crypto::KeyTypeId,
@@ -734,7 +734,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::ed25519_public_keys(keystore, id)
+		Keystore::ed25519_public_keys(keystore, id)
 	}
 
 	/// Generate an `ed22519` key for the given key type using an optional `seed` and
@@ -748,8 +748,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::ed25519_generate_new(keystore, id, seed)
-			.expect("`ed25519_generate` failed")
+		Keystore::ed25519_generate_new(keystore, id, seed).expect("`ed25519_generate` failed")
 	}
 
 	/// Sign the given `msg` with the `ed25519` key that corresponds to the given public key and
@@ -765,7 +764,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::sign_with(keystore, id, &pub_key.into(), msg)
+		Keystore::sign_with(keystore, id, &pub_key.into(), msg)
 			.ok()
 			.flatten()
 			.and_then(|sig| ed25519::Signature::from_slice(&sig))
@@ -877,7 +876,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::sr25519_public_keys(keystore, id)
+		Keystore::sr25519_public_keys(keystore, id)
 	}
 
 	/// Generate an `sr22519` key for the given key type using an optional seed and
@@ -891,8 +890,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::sr25519_generate_new(keystore, id, seed)
-			.expect("`sr25519_generate` failed")
+		Keystore::sr25519_generate_new(keystore, id, seed).expect("`sr25519_generate` failed")
 	}
 
 	/// Sign the given `msg` with the `sr25519` key that corresponds to the given public key and
@@ -908,7 +906,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::sign_with(keystore, id, &pub_key.into(), msg)
+		Keystore::sign_with(keystore, id, &pub_key.into(), msg)
 			.ok()
 			.flatten()
 			.and_then(|sig| sr25519::Signature::from_slice(&sig))
@@ -927,7 +925,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::ecdsa_public_keys(keystore, id)
+		Keystore::ecdsa_public_keys(keystore, id)
 	}
 
 	/// Generate an `ecdsa` key for the given key type using an optional `seed` and
@@ -941,7 +939,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::ecdsa_generate_new(keystore, id, seed).expect("`ecdsa_generate` failed")
+		Keystore::ecdsa_generate_new(keystore, id, seed).expect("`ecdsa_generate` failed")
 	}
 
 	/// Sign the given `msg` with the `ecdsa` key that corresponds to the given public key and
@@ -957,7 +955,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::sign_with(keystore, id, &pub_key.into(), msg)
+		Keystore::sign_with(keystore, id, &pub_key.into(), msg)
 			.ok()
 			.flatten()
 			.and_then(|sig| ecdsa::Signature::from_slice(&sig))
@@ -976,7 +974,7 @@ pub trait Crypto {
 		let keystore = &***self
 			.extension::<KeystoreExt>()
 			.expect("No `keystore` associated for the current context!");
-		SyncCryptoStore::ecdsa_sign_prehashed(keystore, id, pub_key, msg).ok().flatten()
+		Keystore::ecdsa_sign_prehashed(keystore, id, pub_key, msg).ok().flatten()
 	}
 
 	/// Verify `ecdsa` signature.

substrate/primitives/keystore/Cargo.toml

@@ -13,7 +13,6 @@ documentation = "https://docs.rs/sp-core"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-async-trait = "0.1.57"
 codec = { package = "parity-scale-codec", version = "3.2.2", default-features = false, features = ["derive"] }
 futures = "0.3.21"
 merlin = { version = "2.0", default-features = false }

substrate/primitives/keystore/src/lib.rs

@@ -20,15 +20,13 @@ pub mod testing;
 pub mod vrf;
 
 use crate::vrf::{VRFSignature, VRFTranscriptData};
-use async_trait::async_trait;
-use futures::{executor::block_on, future::join_all};
 use sp_core::{
 	crypto::{CryptoTypePublicPair, KeyTypeId},
 	ecdsa, ed25519, sr25519,
 };
 use std::sync::Arc;
 
-/// CryptoStore error
+/// Keystore error
 #[derive(Debug, thiserror::Error)]
 pub enum Error {
 	/// Public key type is not supported
@@ -45,179 +43,8 @@ pub enum Error {
 	Other(String),
 }
 
-/// Something that generates, stores and provides access to keys.
-#[async_trait]
-pub trait CryptoStore: Send + Sync {
-	/// Returns all sr25519 public keys for the given key type.
-	async fn sr25519_public_keys(&self, id: KeyTypeId) -> Vec<sr25519::Public>;
-	/// Generate a new sr25519 key pair for the given key type and an optional seed.
-	///
-	/// If the given seed is `Some(_)`, the key pair will only be stored in memory.
-	///
-	/// Returns the public key of the generated key pair.
-	async fn sr25519_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> Result<sr25519::Public, Error>;
-	/// Returns all ed25519 public keys for the given key type.
-	async fn ed25519_public_keys(&self, id: KeyTypeId) -> Vec<ed25519::Public>;
-	/// Generate a new ed25519 key pair for the given key type and an optional seed.
-	///
-	/// If the given seed is `Some(_)`, the key pair will only be stored in memory.
-	///
-	/// Returns the public key of the generated key pair.
-	async fn ed25519_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> Result<ed25519::Public, Error>;
-	/// Returns all ecdsa public keys for the given key type.
-	async fn ecdsa_public_keys(&self, id: KeyTypeId) -> Vec<ecdsa::Public>;
-	/// Generate a new ecdsa key pair for the given key type and an optional seed.
-	///
-	/// If the given seed is `Some(_)`, the key pair will only be stored in memory.
-	///
-	/// Returns the public key of the generated key pair.
-	async fn ecdsa_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> Result<ecdsa::Public, Error>;
-
-	/// Insert a new key. This doesn't require any known of the crypto; but a public key must be
-	/// manually provided.
-	///
-	/// Places it into the file system store.
-	///
-	/// `Err` if there's some sort of weird filesystem error, but should generally be `Ok`.
-	async fn insert_unknown(&self, id: KeyTypeId, suri: &str, public: &[u8]) -> Result<(), ()>;
-
-	/// Find intersection between provided keys and supported keys
-	///
-	/// Provided a list of (CryptoTypeId,[u8]) pairs, this would return
-	/// a filtered set of public keys which are supported by the keystore.
-	async fn supported_keys(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-	) -> Result<Vec<CryptoTypePublicPair>, Error>;
-	/// List all supported keys
-	///
-	/// Returns a set of public keys the signer supports.
-	async fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error>;
-
-	/// Checks if the private keys for the given public key and key type combinations exist.
-	///
-	/// Returns `true` iff all private keys could be found.
-	async fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool;
-
-	/// Sign with key
-	///
-	/// Signs a message with the private key that matches
-	/// the public key passed.
-	///
-	/// Returns the SCALE encoded signature if key is found and supported, `None` if the key doesn't
-	/// exist or an error when something failed.
-	async fn sign_with(
-		&self,
-		id: KeyTypeId,
-		key: &CryptoTypePublicPair,
-		msg: &[u8],
-	) -> Result<Option<Vec<u8>>, Error>;
-
-	/// Sign with any key
-	///
-	/// Given a list of public keys, find the first supported key and
-	/// sign the provided message with that key.
-	///
-	/// Returns a tuple of the used key and the SCALE encoded signature or `None` if no key could
-	/// be found to sign.
-	async fn sign_with_any(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-		msg: &[u8],
-	) -> Result<Option<(CryptoTypePublicPair, Vec<u8>)>, Error> {
-		if keys.len() == 1 {
-			return Ok(self.sign_with(id, &keys[0], msg).await?.map(|s| (keys[0].clone(), s)))
-		} else {
-			for k in self.supported_keys(id, keys).await? {
-				if let Ok(Some(sign)) = self.sign_with(id, &k, msg).await {
-					return Ok(Some((k, sign)))
-				}
-			}
-		}
-
-		Ok(None)
-	}
-
-	/// Sign with all keys
-	///
-	/// Provided a list of public keys, sign a message with
-	/// each key given that the key is supported.
-	///
-	/// Returns a list of `Result`s each representing the SCALE encoded
-	/// signature of each key, `None` if the key doesn't exist or a error when something failed.
-	async fn sign_with_all(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-		msg: &[u8],
-	) -> Result<Vec<Result<Option<Vec<u8>>, Error>>, ()> {
-		let futs = keys.iter().map(|k| self.sign_with(id, k, msg));
-
-		Ok(join_all(futs).await)
-	}
-
-	/// Generate VRF signature for given transcript data.
-	///
-	/// Receives KeyTypeId and Public key to be able to map
-	/// them to a private key that exists in the keystore which
-	/// is, in turn, used for signing the provided transcript.
-	///
-	/// Returns a result containing the signature data.
-	/// Namely, VRFOutput and VRFProof which are returned
-	/// inside the `VRFSignature` container struct.
-	///
-	/// This function will return `None` if the given `key_type` and `public` combination
-	/// doesn't exist in the keystore or an `Err` when something failed.
-	async fn sr25519_vrf_sign(
-		&self,
-		key_type: KeyTypeId,
-		public: &sr25519::Public,
-		transcript_data: VRFTranscriptData,
-	) -> Result<Option<VRFSignature>, Error>;
-
-	/// Generate an ECDSA signature for a given pre-hashed message.
-	///
-	/// Receives [`KeyTypeId`] and an [`ecdsa::Public`] key to be able to map
-	/// them to a private key that exists in the keystore. This private key is,
-	/// in turn, used for signing the provided pre-hashed message.
-	///
-	/// The `msg` argument provided should be a hashed message for which an
-	/// ECDSA signature should be generated.
-	///
-	/// Returns an [`ecdsa::Signature`] or `None` in case the given `id` and
-	/// `public` combination doesn't exist in the keystore. An `Err` will be
-	/// returned if generating the signature itself failed.
-	async fn ecdsa_sign_prehashed(
-		&self,
-		id: KeyTypeId,
-		public: &ecdsa::Public,
-		msg: &[u8; 32],
-	) -> Result<Option<ecdsa::Signature>, Error>;
-}
-
-/// Sync version of the CryptoStore
-///
-/// Some parts of Substrate still rely on a sync version of the `CryptoStore`.
-/// To make the transition easier this auto trait wraps any async `CryptoStore` and
-/// exposes a `sync` interface using `block_on`. Usage of this is deprecated and it
-/// will be removed as soon as the internal usage has transitioned successfully.
-/// If you are starting out building something new **do not use this**,
-/// instead, use [`CryptoStore`].
-pub trait SyncCryptoStore: CryptoStore + Send + Sync {
+/// Something that generates, stores and provides access to secret keys.
+pub trait Keystore: Send + Sync {
 	/// Returns all sr25519 public keys for the given key type.
 	fn sr25519_public_keys(&self, id: KeyTypeId) -> Vec<sr25519::Public>;
 
@@ -257,30 +84,13 @@ pub trait SyncCryptoStore: CryptoStore + Send + Sync {
 	fn ecdsa_generate_new(&self, id: KeyTypeId, seed: Option<&str>)
 		-> Result<ecdsa::Public, Error>;
 
-	/// Insert a new key. This doesn't require any known of the crypto; but a public key must be
-	/// manually provided.
-	///
-	/// Places it into the file system store.
-	///
-	/// `Err` if there's some sort of weird filesystem error, but should generally be `Ok`.
-	fn insert_unknown(&self, key_type: KeyTypeId, suri: &str, public: &[u8]) -> Result<(), ()>;
-
-	/// Find intersection between provided keys and supported keys
-	///
-	/// Provided a list of (CryptoTypeId,[u8]) pairs, this would return
-	/// a filtered set of public keys which are supported by the keystore.
-	fn supported_keys(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-	) -> Result<Vec<CryptoTypePublicPair>, Error>;
+	/// Insert a new secret key.
+	fn insert(&self, key_type: KeyTypeId, suri: &str, public: &[u8]) -> Result<(), ()>;
 
 	/// List all supported keys
 	///
 	/// Returns a set of public keys the signer supports.
-	fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error> {
-		block_on(CryptoStore::keys(self, id))
-	}
+	fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error>;
 
 	/// Checks if the private keys for the given public key and key type combinations exist.
 	///
@@ -301,50 +111,6 @@ pub trait SyncCryptoStore: CryptoStore + Send + Sync {
 		msg: &[u8],
 	) -> Result<Option<Vec<u8>>, Error>;
 
-	/// Sign with any key
-	///
-	/// Given a list of public keys, find the first supported key and
-	/// sign the provided message with that key.
-	///
-	/// Returns a tuple of the used key and the SCALE encoded signature or `None` if no key could
-	/// be found to sign.
-	fn sign_with_any(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-		msg: &[u8],
-	) -> Result<Option<(CryptoTypePublicPair, Vec<u8>)>, Error> {
-		if keys.len() == 1 {
-			return Ok(
-				SyncCryptoStore::sign_with(self, id, &keys[0], msg)?.map(|s| (keys[0].clone(), s))
-			)
-		} else {
-			for k in SyncCryptoStore::supported_keys(self, id, keys)? {
-				if let Ok(Some(sign)) = SyncCryptoStore::sign_with(self, id, &k, msg) {
-					return Ok(Some((k, sign)))
-				}
-			}
-		}
-
-		Ok(None)
-	}
-
-	/// Sign with all keys
-	///
-	/// Provided a list of public keys, sign a message with
-	/// each key given that the key is supported.
-	///
-	/// Returns a list of `Result`s each representing the SCALE encoded
-	/// signature of each key, `None` if the key doesn't exist or an error when something failed.
-	fn sign_with_all(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-		msg: &[u8],
-	) -> Result<Vec<Result<Option<Vec<u8>>, Error>>, ()> {
-		Ok(keys.iter().map(|k| SyncCryptoStore::sign_with(self, id, k, msg)).collect())
-	}
-
 	/// Generate VRF signature for given transcript data.
 	///
 	/// Receives KeyTypeId and Public key to be able to map
@@ -385,9 +151,9 @@ pub trait SyncCryptoStore: CryptoStore + Send + Sync {
 }
 
 /// A pointer to a keystore.
-pub type SyncCryptoStorePtr = Arc<dyn SyncCryptoStore>;
+pub type KeystorePtr = Arc<dyn Keystore>;
 
 sp_externalities::decl_extension! {
 	/// The keystore extension to register/retrieve from the externalities.
-	pub struct KeystoreExt(SyncCryptoStorePtr);
+	pub struct KeystoreExt(KeystorePtr);
 }

substrate/primitives/keystore/src/testing.rs

@@ -24,23 +24,19 @@ use sp_core::{
 
 use crate::{
 	vrf::{make_transcript, VRFSignature, VRFTranscriptData},
-	CryptoStore, Error, SyncCryptoStore, SyncCryptoStorePtr,
+	Error, Keystore, KeystorePtr,
 };
-use async_trait::async_trait;
 use parking_lot::RwLock;
-use std::{
-	collections::{HashMap, HashSet},
-	sync::Arc,
-};
+use std::{collections::HashMap, sync::Arc};
 
 /// A keystore implementation usable in tests.
 #[derive(Default)]
-pub struct KeyStore {
+pub struct MemoryKeystore {
 	/// `KeyTypeId` maps to public keys and public keys map to private keys.
 	keys: Arc<RwLock<HashMap<KeyTypeId, HashMap<Vec<u8>, String>>>>,
 }
 
-impl KeyStore {
+impl MemoryKeystore {
 	/// Creates a new instance of `Self`.
 	pub fn new() -> Self {
 		Self::default()
@@ -71,93 +67,7 @@ impl KeyStore {
 	}
 }
 
-#[async_trait]
-impl CryptoStore for KeyStore {
-	async fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error> {
-		SyncCryptoStore::keys(self, id)
-	}
-
-	async fn sr25519_public_keys(&self, id: KeyTypeId) -> Vec<sr25519::Public> {
-		SyncCryptoStore::sr25519_public_keys(self, id)
-	}
-
-	async fn sr25519_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> Result<sr25519::Public, Error> {
-		SyncCryptoStore::sr25519_generate_new(self, id, seed)
-	}
-
-	async fn ed25519_public_keys(&self, id: KeyTypeId) -> Vec<ed25519::Public> {
-		SyncCryptoStore::ed25519_public_keys(self, id)
-	}
-
-	async fn ed25519_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> Result<ed25519::Public, Error> {
-		SyncCryptoStore::ed25519_generate_new(self, id, seed)
-	}
-
-	async fn ecdsa_public_keys(&self, id: KeyTypeId) -> Vec<ecdsa::Public> {
-		SyncCryptoStore::ecdsa_public_keys(self, id)
-	}
-
-	async fn ecdsa_generate_new(
-		&self,
-		id: KeyTypeId,
-		seed: Option<&str>,
-	) -> Result<ecdsa::Public, Error> {
-		SyncCryptoStore::ecdsa_generate_new(self, id, seed)
-	}
-
-	async fn insert_unknown(&self, id: KeyTypeId, suri: &str, public: &[u8]) -> Result<(), ()> {
-		SyncCryptoStore::insert_unknown(self, id, suri, public)
-	}
-
-	async fn has_keys(&self, public_keys: &[(Vec<u8>, KeyTypeId)]) -> bool {
-		SyncCryptoStore::has_keys(self, public_keys)
-	}
-
-	async fn supported_keys(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-	) -> std::result::Result<Vec<CryptoTypePublicPair>, Error> {
-		SyncCryptoStore::supported_keys(self, id, keys)
-	}
-
-	async fn sign_with(
-		&self,
-		id: KeyTypeId,
-		key: &CryptoTypePublicPair,
-		msg: &[u8],
-	) -> Result<Option<Vec<u8>>, Error> {
-		SyncCryptoStore::sign_with(self, id, key, msg)
-	}
-
-	async fn sr25519_vrf_sign(
-		&self,
-		key_type: KeyTypeId,
-		public: &sr25519::Public,
-		transcript_data: VRFTranscriptData,
-	) -> Result<Option<VRFSignature>, Error> {
-		SyncCryptoStore::sr25519_vrf_sign(self, key_type, public, transcript_data)
-	}
-
-	async fn ecdsa_sign_prehashed(
-		&self,
-		id: KeyTypeId,
-		public: &ecdsa::Public,
-		msg: &[u8; 32],
-	) -> Result<Option<ecdsa::Signature>, Error> {
-		SyncCryptoStore::ecdsa_sign_prehashed(self, id, public, msg)
-	}
-}
-
-impl SyncCryptoStore for KeyStore {
+impl Keystore for MemoryKeystore {
 	fn keys(&self, id: KeyTypeId) -> Result<Vec<CryptoTypePublicPair>, Error> {
 		self.keys
 			.read()
@@ -304,7 +214,7 @@ impl SyncCryptoStore for KeyStore {
 		}
 	}
 
-	fn insert_unknown(&self, id: KeyTypeId, suri: &str, public: &[u8]) -> Result<(), ()> {
+	fn insert(&self, id: KeyTypeId, suri: &str, public: &[u8]) -> Result<(), ()> {
 		self.keys
 			.write()
 			.entry(id)
@@ -319,17 +229,6 @@ impl SyncCryptoStore for KeyStore {
 			.all(|(k, t)| self.keys.read().get(t).and_then(|s| s.get(k)).is_some())
 	}
 
-	fn supported_keys(
-		&self,
-		id: KeyTypeId,
-		keys: Vec<CryptoTypePublicPair>,
-	) -> std::result::Result<Vec<CryptoTypePublicPair>, Error> {
-		let provided_keys = keys.into_iter().collect::<HashSet<_>>();
-		let all_keys = SyncCryptoStore::keys(self, id)?.into_iter().collect::<HashSet<_>>();
-
-		Ok(provided_keys.intersection(&all_keys).cloned().collect())
-	}
-
 	fn sign_with(
 		&self,
 		id: KeyTypeId,
@@ -386,14 +285,8 @@ impl SyncCryptoStore for KeyStore {
 	}
 }
 
-impl Into<SyncCryptoStorePtr> for KeyStore {
-	fn into(self) -> SyncCryptoStorePtr {
-		Arc::new(self)
-	}
-}
-
-impl Into<Arc<dyn CryptoStore>> for KeyStore {
-	fn into(self) -> Arc<dyn CryptoStore> {
+impl Into<KeystorePtr> for MemoryKeystore {
+	fn into(self) -> KeystorePtr {
 		Arc::new(self)
 	}
 }
@@ -401,7 +294,7 @@ impl Into<Arc<dyn CryptoStore>> for KeyStore {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use crate::{vrf::VRFTranscriptValue, SyncCryptoStore};
+	use crate::vrf::VRFTranscriptValue;
 	use sp_core::{
 		sr25519,
 		testing::{ECDSA, ED25519, SR25519},
@@ -409,34 +302,33 @@ mod tests {
 
 	#[test]
 	fn store_key_and_extract() {
-		let store = KeyStore::new();
+		let store = MemoryKeystore::new();
 
-		let public =
-			SyncCryptoStore::ed25519_generate_new(&store, ED25519, None).expect("Generates key");
+		let public = Keystore::ed25519_generate_new(&store, ED25519, None).expect("Generates key");
 
-		let public_keys = SyncCryptoStore::keys(&store, ED25519).unwrap();
+		let public_keys = Keystore::keys(&store, ED25519).unwrap();
 
 		assert!(public_keys.contains(&public.into()));
 	}
 
 	#[test]
 	fn store_unknown_and_extract_it() {
-		let store = KeyStore::new();
+		let store = MemoryKeystore::new();
 
 		let secret_uri = "//Alice";
 		let key_pair = sr25519::Pair::from_string(secret_uri, None).expect("Generates key pair");
 
-		SyncCryptoStore::insert_unknown(&store, SR25519, secret_uri, key_pair.public().as_ref())
+		Keystore::insert(&store, SR25519, secret_uri, key_pair.public().as_ref())
 			.expect("Inserts unknown key");
 
-		let public_keys = SyncCryptoStore::keys(&store, SR25519).unwrap();
+		let public_keys = Keystore::keys(&store, SR25519).unwrap();
 
 		assert!(public_keys.contains(&key_pair.public().into()));
 	}
 
 	#[test]
 	fn vrf_sign() {
-		let store = KeyStore::new();
+		let store = MemoryKeystore::new();
 
 		let secret_uri = "//Alice";
 		let key_pair = sr25519::Pair::from_string(secret_uri, None).expect("Generates key pair");
@@ -450,7 +342,7 @@ mod tests {
 			],
 		};
 
-		let result = SyncCryptoStore::sr25519_vrf_sign(
+		let result = Keystore::sr25519_vrf_sign(
 			&store,
 			SR25519,
 			&key_pair.public(),
@@ -458,18 +350,18 @@ mod tests {
 		);
 		assert!(result.unwrap().is_none());
 
-		SyncCryptoStore::insert_unknown(&store, SR25519, secret_uri, key_pair.public().as_ref())
+		Keystore::insert(&store, SR25519, secret_uri, key_pair.public().as_ref())
 			.expect("Inserts unknown key");
 
 		let result =
-			SyncCryptoStore::sr25519_vrf_sign(&store, SR25519, &key_pair.public(), transcript_data);
+			Keystore::sr25519_vrf_sign(&store, SR25519, &key_pair.public(), transcript_data);
 
 		assert!(result.unwrap().is_some());
 	}
 
 	#[test]
 	fn ecdsa_sign_prehashed_works() {
-		let store = KeyStore::new();
+		let store = MemoryKeystore::new();
 
 		let suri = "//Alice";
 		let pair = ecdsa::Pair::from_string(suri, None).unwrap();
@@ -477,15 +369,13 @@ mod tests {
 		let msg = sp_core::keccak_256(b"this should be a hashed message");
 
 		// no key in key store
-		let res =
-			SyncCryptoStore::ecdsa_sign_prehashed(&store, ECDSA, &pair.public(), &msg).unwrap();
+		let res = Keystore::ecdsa_sign_prehashed(&store, ECDSA, &pair.public(), &msg).unwrap();
 		assert!(res.is_none());
 
 		// insert key, sign again
-		SyncCryptoStore::insert_unknown(&store, ECDSA, suri, pair.public().as_ref()).unwrap();
+		Keystore::insert(&store, ECDSA, suri, pair.public().as_ref()).unwrap();
 
-		let res =
-			SyncCryptoStore::ecdsa_sign_prehashed(&store, ECDSA, &pair.public(), &msg).unwrap();
+		let res = Keystore::ecdsa_sign_prehashed(&store, ECDSA, &pair.public(), &msg).unwrap();
 		assert!(res.is_some());
 	}
 }

substrate/test-utils/client/src/lib.rs

@@ -33,7 +33,7 @@ pub use sp_consensus;
 pub use sp_keyring::{
 	ed25519::Keyring as Ed25519Keyring, sr25519::Keyring as Sr25519Keyring, AccountKeyring,
 };
-pub use sp_keystore::{SyncCryptoStore, SyncCryptoStorePtr};
+pub use sp_keystore::{Keystore, KeystorePtr};
 pub use sp_runtime::{Storage, StorageChild};
 pub use sp_state_machine::ExecutionStrategy;
 
@@ -70,7 +70,7 @@ pub struct TestClientBuilder<Block: BlockT, ExecutorDispatch, Backend: 'static,
 	child_storage_extension: HashMap<Vec<u8>, StorageChild>,
 	backend: Arc<Backend>,
 	_executor: std::marker::PhantomData<ExecutorDispatch>,
-	keystore: Option<SyncCryptoStorePtr>,
+	keystore: Option<KeystorePtr>,
 	fork_blocks: ForkBlocks<Block>,
 	bad_blocks: BadBlocks<Block>,
 	enable_offchain_indexing_api: bool,
@@ -128,7 +128,7 @@ impl<Block: BlockT, ExecutorDispatch, Backend, G: GenesisInit>
 	}
 
 	/// Set the keystore that should be used by the externalities.
-	pub fn set_keystore(mut self, keystore: SyncCryptoStorePtr) -> Self {
+	pub fn set_keystore(mut self, keystore: KeystorePtr) -> Self {
 		self.keystore = Some(keystore);
 		self
 	}

substrate/utils/frame/benchmarking-cli/src/pallet/command.rs

@@ -38,7 +38,7 @@ use sp_core::{
 	traits::CallContext,
 };
 use sp_externalities::Extensions;
-use sp_keystore::{testing::KeyStore, KeystoreExt, SyncCryptoStorePtr};
+use sp_keystore::{testing::MemoryKeystore, KeystoreExt, KeystorePtr};
 use sp_runtime::traits::{Block as BlockT, Header as HeaderT};
 use sp_state_machine::StateMachine;
 use std::{collections::HashMap, fmt::Debug, fs, str::FromStr, sync::Arc, time};
@@ -218,7 +218,7 @@ impl PalletCmd {
 
 		let extensions = || -> Extensions {
 			let mut extensions = Extensions::default();
-			extensions.register(KeystoreExt(Arc::new(KeyStore::new()) as SyncCryptoStorePtr));
+			extensions.register(KeystoreExt(Arc::new(MemoryKeystore::new()) as KeystorePtr));
 			let (offchain, _) = TestOffchainExt::new();
 			let (pool, _) = TestTransactionPoolExt::new();
 			extensions.register(OffchainWorkerExt::new(offchain.clone()));

substrate/utils/frame/try-runtime/cli/src/lib.rs

@@ -383,7 +383,7 @@ use sp_core::{
 };
 use sp_externalities::Extensions;
 use sp_inherents::InherentData;
-use sp_keystore::{testing::KeyStore, KeystoreExt};
+use sp_keystore::{testing::MemoryKeystore, KeystoreExt};
 use sp_runtime::{
 	traits::{BlakeTwo256, Block as BlockT, NumberFor},
 	DeserializeOwned, Digest,
@@ -820,7 +820,7 @@ pub(crate) fn full_extensions() -> Extensions {
 	let (pool, _pool_state) = TestTransactionPoolExt::new();
 	extensions.register(OffchainDbExt::new(offchain.clone()));
 	extensions.register(OffchainWorkerExt::new(offchain));
-	extensions.register(KeystoreExt(std::sync::Arc::new(KeyStore::new())));
+	extensions.register(KeystoreExt(std::sync::Arc::new(MemoryKeystore::new())));
 	extensions.register(TransactionPoolExt::new(pool));
 
 	extensions