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Don't hash initial message when making EIP-191 signature

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This commit is contained in:
silverpill 2022-04-22 21:27:50 +00:00
parent a97456d77a
commit bffe3bbe7d
1 changed files with 6 additions and 5 deletions
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11
src/ethereum/signatures.rs
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@ -47,10 +47,10 @@ pub enum SignatureError {
}
fn prepare_message(message: &[u8]) -> [u8; 32] {
let message_hash = keccak256(message);
let eip_191_message = [
"\x19Ethereum Signed Message:\n32".as_bytes(),
&message_hash,
"\x19Ethereum Signed Message:\n".as_bytes(),
message.len().to_string().as_bytes(),
&message,
].concat();
let eip_191_message_hash = keccak256(&eip_191_message);
eip_191_message_hash
@ -58,7 +58,7 @@ fn prepare_message(message: &[u8]) -> [u8; 32] {
/// Create EIP-191 signature
/// https://eips.ethereum.org/EIPS/eip-191
pub fn sign_message(
fn sign_message(
signing_key: &str,
message: &[u8],
) -> Result<SignatureData, SignatureError> {
@ -119,7 +119,8 @@ pub fn sign_contract_call(
for arg in method_args {
message.extend(arg.as_ref().as_ref());
};
let signature = sign_message(signing_key, &message)?;
let message_hash = keccak256(&message);
let signature = sign_message(signing_key, &message_hash)?;
Ok(signature)
}