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test/functional/test_framework/schnorr.py
| Show First 20 Lines • Show All 146 Lines • ▼ Show 20 Lines | while True: | ||||
| # our purpose. | # our purpose. | ||||
| V = hmac.HMAC(K, V, 'sha256').digest() | V = hmac.HMAC(K, V, 'sha256').digest() | ||||
| T = V | T = V | ||||
| assert len(T) >= 32 | assert len(T) >= 32 | ||||
| k = int.from_bytes(T, 'big') | k = int.from_bytes(T, 'big') | ||||
| if k > 0 and k < SECP256K1_ORDER: | if k > 0 and k < SECP256K1_ORDER: | ||||
| break | break | ||||
| K = hmac.HMAC(K, V+b'\x00', 'sha256').digest() | K = hmac.HMAC(K, V+b'\x00', 'sha256').digest() | ||||
| V = HMAC_K(V) | V = hmac.HMAC(K, V, 'sha256').digest() | ||||
| return k | return k | ||||
| def sign(privkeybytes, msg32): | def sign(privkeybytes, msg32): | ||||
| """Create Schnorr signature (BIP-Schnorr convention).""" | """Create Schnorr signature (BIP-Schnorr convention).""" | ||||
| assert len(privkeybytes) == 32 | assert len(privkeybytes) == 32 | ||||
| assert len(msg32) == 32 | assert len(msg32) == 32 | ||||
| ▲ Show 20 Lines • Show All 92 Lines • Show Last 20 Lines | |||||