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Revert k256 removal (#14499)

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* Revert "Remove k256 crate from frame-support dependencies (#14452)"

This reverts commit 4d426214af.

* Keep the test
This commit is contained in:
Bastian Köcher
2023-07-03 23:38:51 +02:00
committed by GitHub
parent fc36e04dfa
commit 79f600db70
4 changed files with 189 additions and 35 deletions
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substrate/frame/support/src/crypto/ecdsa.rs
+7 -5
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@@ -34,14 +34,16 @@ pub trait ECDSAExt {
impl ECDSAExt for Public {
fn to_eth_address(&self) -> Result<[u8; 20], ()> {
use secp256k1::PublicKey;
use k256::{elliptic_curve::sec1::ToEncodedPoint, PublicKey};
PublicKey::from_slice(self.as_slice()).map_err(drop).and_then(|pub_key| {
PublicKey::from_sec1_bytes(self.as_slice()).map_err(drop).and_then(|pub_key| {
// uncompress the key
let uncompressed = pub_key.serialize_uncompressed();
let uncompressed = pub_key.to_encoded_point(false);
// convert to ETH address
<[u8; 20]>::try_from(sp_io::hashing::keccak_256(&uncompressed[1..])[12..].as_ref())
.map_err(drop)
<[u8; 20]>::try_from(
sp_io::hashing::keccak_256(&uncompressed.as_bytes()[1..])[12..].as_ref(),
)
.map_err(drop)
})
}
}