diff options
Diffstat (limited to 'bip-schnorr/reference.py')
| -rw-r--r-- | bip-schnorr/reference.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/bip-schnorr/reference.py b/bip-schnorr/reference.py index 79be690..f2a944f 100644 --- a/bip-schnorr/reference.py +++ b/bip-schnorr/reference.py @@ -53,6 +53,8 @@ def bytes_from_point(P): def point_from_bytes(b): x = int_from_bytes(b) + if x >= p: + return None y_sq = (pow(x, 3, p) + 7) % p y = pow(y_sq, (p + 1) // 4, p) if pow(y, 2, p) != y_sq: |