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| author | Jonas Nick <jonasd.nick@gmail.com> | 2020-02-24 17:01:19 +0000 |
|---|---|---|
| committer | Jonas Nick <jonasd.nick@gmail.com> | 2020-03-04 16:34:24 +0000 |
| commit | 9bfa53e9fb4af9f17d63806fe0710f18203c94c9 (patch) | |
| tree | 495de4a03368388c9b1bca1efe5835f520d00b2c | |
| parent | b6b5f58e6e919a485604ce7037f650e1ae54969f (diff) | |
| download | bips-9bfa53e9fb4af9f17d63806fe0710f18203c94c9.tar.xz | |
BIP 340: Verify sig before returning it
| -rw-r--r-- | bip-0340/reference.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/bip-0340/reference.py b/bip-0340/reference.py index 1ada7f1..79f9578 100644 --- a/bip-0340/reference.py +++ b/bip-0340/reference.py @@ -110,7 +110,10 @@ def schnorr_sign(msg, seckey0, aux_rand): R = point_mul(G, k0) k = n - k0 if not has_square_y(R) else k0 e = int_from_bytes(tagged_hash("BIP340/challenge", bytes_from_point(R) + bytes_from_point(P) + msg)) % n - return bytes_from_point(R) + bytes_from_int((k + e * seckey) % n) + sig = bytes_from_point(R) + bytes_from_int((k + e * seckey) % n) + if not schnorr_verify(msg, bytes_from_point(P), sig): + raise RuntimeError('The signature does not pass verification.') + return sig def schnorr_verify(msg, pubkey, sig): if len(msg) != 32: |