Encryption support for the statement store (#14440)

* Added ECIES encryption

* tweaks

* fmt

* Make clippy happy

* Use local keystore

* qed

substrate/primitives/core/Cargo.toml

@@ -57,7 +57,6 @@ sp-runtime-interface = { version = "17.0.0", default-features = false, path = ".
 w3f-bls = { version = "0.1.3", default-features = false, optional = true}
 
 [dev-dependencies]
-rand = "0.8.5"
 criterion = "0.4.0"
 serde_json = "1.0"
 sp-core-hashing-proc-macro = { version = "9.0.0", path = "./hashing/proc-macro" }

substrate/primitives/core/src/ed25519.rs

@@ -422,12 +422,8 @@ impl TraitPair for Pair {
 	///
 	/// Returns true if the signature is good.
 	fn verify<M: AsRef<[u8]>>(sig: &Self::Signature, message: M, public: &Self::Public) -> bool {
-		let Ok(public) = VerificationKey::try_from(public.as_slice()) else {
-			return false
-		};
-		let Ok(signature) = ed25519_zebra::Signature::try_from(sig.as_ref()) else {
-			return false
-		};
+		let Ok(public) = VerificationKey::try_from(public.as_slice()) else { return false };
+		let Ok(signature) = ed25519_zebra::Signature::try_from(sig.as_ref()) else { return false };
 		public.verify(&signature, message.as_ref()).is_ok()
 	}
 

substrate/primitives/core/src/sr25519.rs

@@ -505,12 +505,8 @@ impl TraitPair for Pair {
 	}
 
 	fn verify<M: AsRef<[u8]>>(sig: &Self::Signature, message: M, pubkey: &Self::Public) -> bool {
-		let Ok(signature) = schnorrkel::Signature::from_bytes(sig.as_ref()) else {
-			return false
-		};
-		let Ok(public) = PublicKey::from_bytes(pubkey.as_ref()) else {
-			return false
-		};
+		let Ok(signature) = schnorrkel::Signature::from_bytes(sig.as_ref()) else { return false };
+		let Ok(public) = PublicKey::from_bytes(pubkey.as_ref()) else { return false };
 		public.verify_simple(SIGNING_CTX, message.as_ref(), &signature).is_ok()
 	}