def test_ecdsa_raw_sign():
msg = "aa" * 31
with pytest.raises(Exception) as e_info:
btc.ecdsa_raw_sign(msg, None, None, rawmsg=True)
assert e_info.match("Invalid hash input")
#build non-raw priv object as input
privraw = "aa" * 32
msghash = b"\xbb" * 32
sig = binascii.hexlify(
btc.ecdsa_raw_sign(msghash, privraw, False, rawpriv=False,
rawmsg=True)).decode('ascii')
assert sig == "3045022100b81960b4969b423199dea555f562a66b7f49dea5836a0168361f1a5f8a3c8298022003eea7d7ee4462e3e9d6d59220f950564caeb77f7b1cdb42af3c83b013ff3b2f"
def test_valid_sigs(setup_ecc):
for v in vectors['vectors']:
msg = v['msg']
sig = v['sig']
priv = v['privkey']
assert sig == btc.ecdsa_raw_sign(msg, priv, True, rawmsg=True) + '01'
#check that the signature verifies against the key(pair)
pubkey = btc.privtopub(priv)
assert btc.ecdsa_raw_verify(msg, pubkey, sig[:-2], True, rawmsg=True)
#check that it fails to verify against corrupted signatures
for i in [0, 1, 2, 4, 7, 25, 55]:
#corrupt one byte
binsig = binascii.unhexlify(sig)
checksig = binascii.hexlify(binsig[:i] +
chr((ord(binsig[i]) + 1) % 256) +
binsig[i + 1:-1])
#this kind of corruption will sometimes lead to an assert
#failure (if the DER format is corrupted) and sometimes lead
#to a signature verification failure.
try:
res = btc.ecdsa_raw_verify(msg,
pubkey,
checksig,
True,
rawmsg=True)
except:
continue
assert res == False
def test_valid_sigs(setup_ecc):
for v in vectors['vectors']:
msg, sig, priv = (binascii.unhexlify(v[a])
for a in ["msg", "sig", "privkey"])
assert sig == btc.ecdsa_raw_sign(msg, priv, rawmsg=True) + b'\x01'
# check that the signature verifies against the key(pair)
pubkey = btc.privkey_to_pubkey(priv)
assert btc.ecdsa_raw_verify(msg, pubkey, sig[:-1], rawmsg=True)
# check that it fails to verify against corrupted signatures
for i in [0, 1, 2, 4, 7, 25, 55]:
# corrupt one byte
checksig = sig[:i] + chr(
(ord(sig[i:i + 1]) + 1) % 256).encode() + sig[i + 1:-1]
# this kind of corruption will sometimes lead to an assert
# failure (if the DER format is corrupted) and sometimes lead
# to a signature verification failure.
try:
res = btc.ecdsa_raw_verify(msg, pubkey, checksig, rawmsg=True)
except:
continue
assert res == False