Anonymous user
Bitcoin/address validation: Difference between revisions
→{{header|Perl}}: Add Python.
(→{{header|Perl}}: Add Python.) |
|||
Line 117:
substr sha256(sha256 pack 'C*', @byte[0..20]), 0, 4;
}</lang>
=={{header|Python}}==
<lang python>from hashlib import sha256
digits58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
def decode_base58(bc, length):
n = 0
for char in bc:
n = n * 58 + digits58.index(char)
return n.to_bytes(25, 'big')
def check_bc(bc):
bcbytes = decode_base58(bc, 25)
return bcbytes[-4:] == sha256(sha256(bcbytes[:-4]).digest()).digest()[:4]
if __name__ == '__main__':
bc = '1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i'
assert check_bc(bc)
assert not check_bc( bc.replace('N', 'P', 1) )</lang>
{{out}}
No output signifying success.
=={{header|Tcl}}==
| |||