/// *** This is a temporary work-around. ***
/// We do not know which of the two possible public keys from the commit to use,
/// so here we try both of them and succeed if either works.
/// This is sub-optimal in terms of performance.
/// I believe apoelstra has a strategy for fixing this in the secp256k1-zkp lib.
public static void verify_from_commit(this Secp256K1 self, Message msg, Signiture sig, Commitment commit)
{
if (self.Caps != ContextFlag.Commit)
{
throw new Exception("IncapableContext");
}
// If we knew which one we cared about here we would just use it,
// but for now return both so we can try them both.
var pubkeys = commit.to_two_pubkeys(self);
// Attempt to verify with the first public key,
// if verify fails try the other one.
// The first will fail on average 50% of the time.
try
{
self.Verify(msg, sig, pubkeys[0]);
}
catch (Exception)
{
self.Verify(msg, sig, pubkeys[1]);
}
}
