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sp-core: full_crypto doesn't imply std (#11006)

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* sp-core: `full_crypto` doesn't imply `std`

This pr changes the feature set of `secp256k1` to not use `global-context` when only the
`full_crypto` is enabled. It will be slower when the `std` feature is not enabled as the context
always needs to be recreated, but that is fine.

* Update client/cli/src/arg_enums.rs

Co-authored-by: Davide Galassi <davxy@datawok.net>

Co-authored-by: Davide Galassi <davxy@datawok.net>
This commit is contained in:
Bastian Köcher
2022-03-10 19:26:42 +01:00
committed by GitHub
parent bef9b79d7b
commit c939d0a7a0
2 changed files with 28 additions and 7 deletions
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substrate/primitives/core/src/ecdsa.rs
+26 -6
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@@ -34,12 +34,14 @@ use crate::{
};
#[cfg(feature = "std")]
use bip39::{Language, Mnemonic, MnemonicType};
#[cfg(feature = "full_crypto")]
use core::convert::TryFrom;
#[cfg(all(feature = "full_crypto", not(feature = "std")))]
use secp256k1::Secp256k1;
#[cfg(feature = "std")]
use secp256k1::SECP256K1;
#[cfg(feature = "full_crypto")]
use secp256k1::{
ecdsa::{RecoverableSignature, RecoveryId},
Message, PublicKey, SecretKey, SECP256K1,
Message, PublicKey, SecretKey,
};
#[cfg(feature = "std")]
use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
@@ -334,7 +336,13 @@ impl Signature {
let rid = RecoveryId::from_i32(self.0[64] as i32).ok()?;
let sig = RecoverableSignature::from_compact(&self.0[..64], rid).ok()?;
let message = Message::from_slice(message).expect("Message is 32 bytes; qed");
SECP256K1
#[cfg(feature = "std")]
let context = SECP256K1;
#[cfg(not(feature = "std"))]
let context = Secp256k1::verification_only();
context
.recover_ecdsa(&message, &sig)
.ok()
.map(|pubkey| Public(pubkey.serialize()))
@@ -425,7 +433,13 @@ impl TraitPair for Pair {
fn from_seed_slice(seed_slice: &[u8]) -> Result<Pair, SecretStringError> {
let secret =
SecretKey::from_slice(seed_slice).map_err(|_| SecretStringError::InvalidSeedLength)?;
let public = PublicKey::from_secret_key(SECP256K1, &secret);
#[cfg(feature = "std")]
let context = SECP256K1;
#[cfg(not(feature = "std"))]
let context = Secp256k1::signing_only();
let public = PublicKey::from_secret_key(&context, &secret);
let public = Public(public.serialize());
Ok(Pair { public, secret })
}
@@ -503,7 +517,13 @@ impl Pair {
/// Sign a pre-hashed message
pub fn sign_prehashed(&self, message: &[u8; 32]) -> Signature {
let message = Message::from_slice(message).expect("Message is 32 bytes; qed");
SECP256K1.sign_ecdsa_recoverable(&message, &self.secret).into()
#[cfg(feature = "std")]
let context = SECP256K1;
#[cfg(not(feature = "std"))]
let context = Secp256k1::signing_only();
context.sign_ecdsa_recoverable(&message, &self.secret).into()
}
/// Verify a signature on a pre-hashed message. Return `true` if the signature is valid