mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-01 05:27:23 +00:00
Alexander Gryaznov
9676ce6f36
* `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>
50 lines
1.6 KiB
Rust
50 lines
1.6 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2022 Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Simple ECDSA secp256k1 API.
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//!
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//! Provides an extension trait for [`sp_core::ecdsa::Public`] to do certain operations.
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use sp_core::{crypto::ByteArray, ecdsa::Public};
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/// Extension trait for [`Public`] to be used from inside the runtime.
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///
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/// # Note
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///
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/// This is needed because host functions cannot be called from within
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/// `sp_core` due to cyclic dependencies on `sp_io`.
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pub trait ECDSAExt {
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/// Returns Ethereum address calculated from this ECDSA public key.
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fn to_eth_address(&self) -> Result<[u8; 20], ()>;
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}
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impl ECDSAExt for Public {
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fn to_eth_address(&self) -> Result<[u8; 20], ()> {
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use k256::{elliptic_curve::sec1::ToEncodedPoint, PublicKey};
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PublicKey::from_sec1_bytes(self.as_slice()).map_err(drop).and_then(|pub_key| {
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// uncompress the key
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let uncompressed = pub_key.to_encoded_point(false);
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// convert to ETH address
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<[u8; 20]>::try_from(
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sp_io::hashing::keccak_256(&uncompressed.as_bytes()[1..])[12..].as_ref(),
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)
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.map_err(drop)
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})
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}
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}
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