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Check if message in slate comes with signature (#2284)

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Fixes #2281
This commit is contained in:
hashmap 2019-01-03 13:05:23 +01:00 committed by GitHub
parent 939f42ea56
commit 3b4492495f
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 2 deletions
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14
core/src/libtx/slate.rs
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@ -351,12 +351,22 @@ impl Slate {
/// Verifies any messages in the slate's participant data match their signatures
pub fn verify_messages(&self, secp: &secp::Secp256k1) -> Result<(), Error> {
for p in self.participant_data.iter() {
if let Some(msg) = p.message.clone() {
if let Some(msg) = &p.message {
let hashed = blake2b(secp::constants::MESSAGE_SIZE, &[], &msg.as_bytes()[..]);
let m = secp::Message::from_slice(&hashed.as_bytes())?;
let signature = match p.message_sig {
None => {
error!("verify_messages - participant message doesn't have signature. Message: \"{}\"",
String::from_utf8_lossy(&msg.as_bytes()[..]));
return Err(ErrorKind::Signature(
"Optional participant messages doesn't have signature".to_owned(),
))?;
}
Some(s) => s,
};
if !aggsig::verify_single(
secp,
&p.message_sig.as_ref().unwrap(),
&signature,
&m,
None,
&p.public_blind_excess,