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Support for keyring in runtimes (#2044)

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This functionality is required for #1984.

This PR enables
[`sp-keyring`](https://github.com/paritytech/polkadot-sdk/blob/21d36b7b4229c4d5225944f197918cde23fda4ea/substrate/primitives/keyring/src/sr25519.rs#L31-L40)
in `no-std` environments, allowing to generate the public key (e.g.
`AccountKeyring::Alice.public().to_ss58check()`), which can be later
used in the any of built-in [_runtime-genesis-config_
variant](https://github.com/paritytech/polkadot-sdk/blob/21d36b7b4229c4d5225944f197918cde23fda4ea/polkadot/node/service/src/chain_spec.rs#L1066-L1073).


The proposal is as follows:
- expose [`core::Pair`
trait](https://github.com/paritytech/polkadot-sdk/blob/d6f15306282e3de848a09c9aa9cba6f95a7811f0/substrate/primitives/core/src/crypto.rs#L832)
in `no-std`,
- `full_crypto` feature enables `sign` method,
- `std` feature enables `generate_with_phrase` and `generate` methods
(randomness is required),
- All other functionality, currently gated by `full_crypto` will be
available unconditionally (`no-std`):
-- `from_string`
-- `from_string_with_seed`
-- `from seed`
-- `from_seed_slice`
-- `from_phrase`
-- `derive`
-- `verify`

---

Depends on https://github.com/rust-bitcoin/rust-bip39/pull/57

---------

Co-authored-by: command-bot <>
Co-authored-by: Davide Galassi <davxy@datawok.net>
This commit is contained in:
Michal Kucharczyk
2024-03-12 12:43:31 +01:00
committed by GitHub
parent 1ead59773e
commit a756baf3b2
30 changed files with 248 additions and 233 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/primitives/core/src/paired_crypto.rs
+8 -19
View File
@@ -19,11 +19,11 @@
#[cfg(feature = "serde")]
use crate::crypto::Ss58Codec;
use crate::crypto::{ByteArray, CryptoType, Derive, Public as PublicT, UncheckedFrom};
#[cfg(feature = "full_crypto")]
use crate::crypto::{DeriveError, DeriveJunction, Pair as PairT, SecretStringError};
use crate::crypto::{
ByteArray, CryptoType, Derive, DeriveError, DeriveJunction, Pair as PairT, Public as PublicT,
SecretStringError, UncheckedFrom,
};
#[cfg(feature = "full_crypto")]
use sp_std::vec::Vec;
use codec::{Decode, Encode, MaxEncodedLen};
@@ -39,12 +39,11 @@ use sp_std::convert::TryFrom;
/// ECDSA and BLS12-377 paired crypto scheme
#[cfg(feature = "bls-experimental")]
pub mod ecdsa_bls377 {
use crate::{bls377, crypto::CryptoTypeId, ecdsa};
#[cfg(feature = "full_crypto")]
use crate::Hasher;
use crate::{
bls377,
crypto::{CryptoTypeId, Pair as PairT, UncheckedFrom},
ecdsa,
crypto::{Pair as PairT, UncheckedFrom},
Hasher,
};
/// An identifier used to match public keys against BLS12-377 keys
@@ -56,7 +55,6 @@ pub mod ecdsa_bls377 {
ecdsa::SIGNATURE_SERIALIZED_SIZE + bls377::SIGNATURE_SERIALIZED_SIZE;
/// (ECDSA,BLS12-377) key-pair pair.
#[cfg(feature = "full_crypto")]
pub type Pair = super::Pair<ecdsa::Pair, bls377::Pair, PUBLIC_KEY_LEN, SIGNATURE_LEN>;
/// (ECDSA,BLS12-377) public key pair.
pub type Public = super::Public<PUBLIC_KEY_LEN>;
@@ -64,16 +62,13 @@ pub mod ecdsa_bls377 {
pub type Signature = super::Signature<SIGNATURE_LEN>;
impl super::CryptoType for Public {
#[cfg(feature = "full_crypto")]
type Pair = Pair;
}
impl super::CryptoType for Signature {
#[cfg(feature = "full_crypto")]
type Pair = Pair;
}
#[cfg(feature = "full_crypto")]
impl super::CryptoType for Pair {
type Pair = Pair;
}
@@ -136,7 +131,6 @@ pub mod ecdsa_bls377 {
/// Secure seed length.
///
/// Currently only supporting sub-schemes whose seed is a 32-bytes array.
#[cfg(feature = "full_crypto")]
const SECURE_SEED_LEN: usize = 32;
/// A secret seed.
@@ -144,14 +138,12 @@ const SECURE_SEED_LEN: usize = 32;
/// It's not called a "secret key" because ring doesn't expose the secret keys
/// of the key pair (yeah, dumb); as such we're forced to remember the seed manually if we
/// will need it later (such as for HDKD).
#[cfg(feature = "full_crypto")]
type Seed = [u8; SECURE_SEED_LEN];
/// A public key.
#[derive(Clone, Encode, Decode, MaxEncodedLen, TypeInfo, PartialEq, Eq, PartialOrd, Ord)]
pub struct Public<const LEFT_PLUS_RIGHT_LEN: usize>([u8; LEFT_PLUS_RIGHT_LEN]);
#[cfg(feature = "full_crypto")]
impl<const LEFT_PLUS_RIGHT_LEN: usize> sp_std::hash::Hash for Public<LEFT_PLUS_RIGHT_LEN> {
fn hash<H: sp_std::hash::Hasher>(&self, state: &mut H) {
self.0.hash(state);
@@ -215,7 +207,6 @@ impl<const LEFT_PLUS_RIGHT_LEN: usize> PassBy for Public<LEFT_PLUS_RIGHT_LEN> {
type PassBy = pass_by::Inner<Self, [u8; LEFT_PLUS_RIGHT_LEN]>;
}
#[cfg(feature = "full_crypto")]
impl<
LeftPair: PairT,
RightPair: PairT,
@@ -311,7 +302,6 @@ impl<T: ByteArray> SignatureBound for T {}
#[derive(Clone, Encode, Decode, MaxEncodedLen, TypeInfo, PartialEq, Eq)]
pub struct Signature<const LEFT_PLUS_RIGHT_LEN: usize>([u8; LEFT_PLUS_RIGHT_LEN]);
#[cfg(feature = "full_crypto")]
impl<const LEFT_PLUS_RIGHT_LEN: usize> sp_std::hash::Hash for Signature<LEFT_PLUS_RIGHT_LEN> {
fn hash<H: sp_std::hash::Hasher>(&self, state: &mut H) {
self.0.hash(state);
@@ -411,7 +401,6 @@ impl<const LEFT_PLUS_RIGHT_LEN: usize> UncheckedFrom<[u8; LEFT_PLUS_RIGHT_LEN]>
}
/// A key pair.
#[cfg(feature = "full_crypto")]
#[derive(Clone)]
pub struct Pair<
LeftPair: PairT,
@@ -423,7 +412,6 @@ pub struct Pair<
right: RightPair,
}
#[cfg(feature = "full_crypto")]
impl<
LeftPair: PairT,
RightPair: PairT,
@@ -483,6 +471,7 @@ where
Self::Public::unchecked_from(raw)
}
#[cfg(feature = "full_crypto")]
fn sign(&self, message: &[u8]) -> Self::Signature {
let mut raw: [u8; SIGNATURE_LEN] = [0u8; SIGNATURE_LEN];
raw[..LeftPair::Signature::LEN].copy_from_slice(self.left.sign(message).as_ref());