diff options
Diffstat (limited to 'bip-0340')
| -rw-r--r-- | bip-0340/reference.py | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/bip-0340/reference.py b/bip-0340/reference.py index d6106fd..346b639 100644 --- a/bip-0340/reference.py +++ b/bip-0340/reference.py @@ -33,13 +33,13 @@ def y(P): return P[1] def point_add(P1, P2): - if (P1 is None): + if P1 is None: return P2 - if (P2 is None): + if P2 is None: return P1 - if (x(P1) == x(P2) and y(P1) != y(P2)): + if (x(P1) == x(P2)) and (y(P1) != y(P2)): return None - if (P1 == P2): + if P1 == P2: lam = (3 * x(P1) * x(P1) * pow(2 * y(P1), p - 2, p)) % p else: lam = ((y(P2) - y(P1)) * pow(x(P2) - x(P1), p - 2, p)) % p @@ -49,7 +49,7 @@ def point_add(P1, P2): def point_mul(P, n): R = None for i in range(256): - if ((n >> i) & 1): + if (n >> i) & 1: R = point_add(R, P) P = point_add(P, P) return R @@ -90,7 +90,7 @@ def is_square(x): return pow(x, (p - 1) // 2, p) == 1 def has_square_y(P): - return not is_infinity(P) and is_square(y(P)) + return (not is_infinity(P)) and (is_square(y(P))) def has_even_y(P): return y(P) % 2 == 0 @@ -144,7 +144,7 @@ def schnorr_verify(msg, pubkey, sig): return False e = int_from_bytes(tagged_hash("BIP340/challenge", sig[0:32] + pubkey + msg)) % n R = point_add(point_mul(G, s), point_mul(P, n - e)) - if R is None or not has_square_y(R) or x(R) != r: + if (R is None) or (not has_square_y(R)) or (x(R) != r): debug_print_vars() return False debug_print_vars() @@ -168,7 +168,7 @@ def test_vectors(): msg = bytes.fromhex(msg) sig = bytes.fromhex(sig) result = result == 'TRUE' - print('\nTest vector #%-3i: ' % int(index)) + print('\nTest vector', ('#' + index).rjust(3, ' ') + ':') if seckey != '': seckey = bytes.fromhex(seckey) pubkey_actual = pubkey_gen(seckey) |