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Add frame_support::crypto::ecdsa::Public.to_eth_address() (k256-based) and use it in pallets (#11087)

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* `ecdsa::Public::to_eth_address` + test, beefy-mmr `convert()` to use it, contracts Ext interface

* `seal_ecdsa_to_eth_address` all but benchmark done

* `seal_ecdsa_to_eth_address` + wasm test

* `seal_ecdsa_to_eth_address` + benchmark

* fixed dependencies

* Apply suggestions from code review

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* fixes from review #1

* ecdsa::Public(*pk).to_eth_address() moved to frame_support and contracts to use it

* beefy-mmr to use newly added frame_support function for convertion

* a doc fix

* import fix

* benchmark fix-1 (still fails)

* benchmark fixed

* Apply suggestions from code review

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* fixes on Alex T feedback

* to_eth_address() put into extension trait for sp-core::ecdsa::Public

* Update frame/support/src/crypto/ecdsa.rs

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* Update frame/contracts/src/wasm/mod.rs

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* fixes on issues pointed out in review

* benchmark errors fixed

* fmt fix

* EcdsaRecoverFailed err docs updated

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* make applied suggestions compile

* get rid of unwrap() in runtime

* Remove expect

Co-authored-by: Alexander Theißen <alex.theissen@me.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Bastian Köcher <info@kchr.de>
This commit is contained in:
Alexander Gryaznov
2022-04-16 15:51:40 +03:00
committed by GitHub
parent c6e452108b
commit 9676ce6f36
13 changed files with 283 additions and 48 deletions
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substrate/frame/support/src/crypto/ecdsa.rs
+49
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// This file is part of Substrate.
// Copyright (C) 2022 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Simple ECDSA secp256k1 API.
//!
//! Provides an extension trait for [`sp_core::ecdsa::Public`] to do certain operations.
use sp_core::{crypto::ByteArray, ecdsa::Public};
/// Extension trait for [`Public`] to be used from inside the runtime.
///
/// # Note
///
/// This is needed because host functions cannot be called from within
/// `sp_core` due to cyclic dependencies on `sp_io`.
pub trait ECDSAExt {
/// Returns Ethereum address calculated from this ECDSA public key.
fn to_eth_address(&self) -> Result<[u8; 20], ()>;
}
impl ECDSAExt for Public {
fn to_eth_address(&self) -> Result<[u8; 20], ()> {
use k256::{elliptic_curve::sec1::ToEncodedPoint, PublicKey};
PublicKey::from_sec1_bytes(self.as_slice()).map_err(drop).and_then(|pub_key| {
// uncompress the key
let uncompressed = pub_key.to_encoded_point(false);
// convert to ETH address
<[u8; 20]>::try_from(
sp_io::hashing::keccak_256(&uncompressed.as_bytes()[1..])[12..].as_ref(),
)
.map_err(drop)
})
}
}