def is_valid(v):
'''Check vector v for validity'''
result = b58decode_chk(v)
if result is None:
return False
for template in templates:
prefix = str(bytearray(template[0]))
suffix = str(bytearray(template[2]))
if result.startswith(prefix) and result.endswith(suffix):
if (len(result) - len(prefix) - len(suffix)) == template[1]:
return True
return False
def is_valid(v):
'''Check vector v for validity'''
result = b58decode_chk(v)
if result is None:
return False
for template in templates:
prefix = str(bytearray(template[0]))
suffix = str(bytearray(template[2]))
if result.startswith(prefix) and result.endswith(suffix):
if (len(result) - len(prefix) - len(suffix)) == template[1]:
return True
return False
def is_valid(v):
'''Check vector v for validity'''
if len(set(v) - set(b58chars)) > 0:
return is_valid_bech32(v)
result = b58decode_chk(v)
if result is None:
return is_valid_bech32(v)
for template in templates:
prefix = bytearray(template[0])
suffix = bytearray(template[2])
if result.startswith(prefix) and result.endswith(suffix):
if (len(result) - len(prefix) - len(suffix)) == template[1]:
return True
return is_valid_bech32(v)
def is_valid(v):
'''Check vector v for validity'''
if len(set(v) - set(b58chars)) > 0:
return is_valid_bech32(v)
result = b58decode_chk(v)
if result is None:
return is_valid_bech32(v)
for template in templates:
prefix = bytearray(template[0])
suffix = bytearray(template[2])
if result.startswith(prefix) and result.endswith(suffix):
if (len(result) - len(prefix) - len(suffix)) == template[1]:
return True
return is_valid_bech32(v)
def is_valid_syscoin_address(address, network='mainnet'):
# bech32
try:
syscoin_hrp = "tsys" if network == 'testnet' else "sys"
witver, _ = segwit_addr.decode(syscoin_hrp, address)
if witver is not None:
return True
except:
address_version = None
# Only public key addresses are allowed
# A valid address is a RIPEMD-160 hash which contains 20 bytes
# Prior to base58 encoding 1 version byte is prepended and
# 4 checksum bytes are appended so the total number of
# base58 encoded bytes should be 25. This means the number of characters
# in the encoding should be about 34 ( 25 * log2( 256 ) / log2( 58 ) ).
# Support syscoin address (T-address on testnet and S-address on mainnet)
syscoin_version = 65 if network == 'testnet' else 63
# Check length (This is important because the base58 library has problems
# with long addresses (which are invalid anyway).
if ((len(address) < 26) or (len(address) > 35)):
return False
address_version = None
try:
decoded = base58.b58decode_chk(address)
address_version = ord(decoded[0:1])
except:
# rescue from exception, not a valid Syscoin address
return False
if (address_version != syscoin_version):
return False
return True
