def update(self, arg):
# Update the hash object with the string arg. Repeated calls are equivalent to a single call with the concatenation of all the arguments: m.update(a); m.update(b) is equivalent to m.update(a+b). arg is a normal bytestring.
self.last_digest = None
# Convert the data into a workable format, and add it to the buffer
self.buffered_data += encode_hex(arg)
# Absorb any blocks we can:
if len(self.buffered_data) * 4 >= self.r:
extra_bits = len(self.buffered_data) * 4 % self.r
# An exact fit!
if extra_bits == 0:
P = self.buffered_data
self.buffered_data = ""
else:
# Slice it up into the first r*a bits, for some constant a>=1, and the remaining total-r*a bits.
P = self.buffered_data[:-extra_bits // 4]
self.buffered_data = self.buffered_data[-extra_bits // 4:]
#Absorbing phase
for i in xrange((len(P) * 8 // 2) // self.r):
to_convert = P[i * (2 * self.r // 8):(i + 1) * (2 * self.r // 8)] + '00' * (self.c // 8)
P_i = _convertStrToTable(to_convert, self.w, self.b)
# First apply the XOR to the state + block
for y in xrange(5):
for x in xrange(5):
self.S[x][y] = self.S[x][y] ^ P_i[x][y]
# Then apply the block permutation, Keccak-F
self.S = Keccak.KeccakF(self.S, self.n_r, self.w)
def big_endian_to_int(value):
if len(value) == 1:
return ord(value)
elif len(value) <= 8:
return struct.unpack('>Q', value.rjust(8, b'\x00'))[0]
else:
return int(encode_hex(value), 16)
def to_dict(self):
d = {}
for name, _ in self.__class__.fields:
d[name] = getattr(self, name)
if name in ('to', ):
d[name] = '0x' + encode_hex(d[name])
elif name in ('value', ):
if self.afi == 1:
ip = IPv4Address(Bytes(d[name][:4]))
net = IPv4Network(
str(ip) + '/' + str(bytes_to_int(d[name][4])))
d[name] = str(net)
else:
ip = IPv6Address(Bytes(d[name][:16]))
net = IPv6Network(
str(ip) + '/' + str(bytes_to_int(d[name][16])))
d[name] = str(net)
elif name in ('metadata', ) and self.category == 2:
_metadata = []
i = 0
while i < len(d[name]):
_metadata.append(bytes_to_int(d[name][i]))
if _metadata[-1] == 1:
ip = IPv4Address(Bytes(d[name][i + 1]))
else:
ip = IPv6Address(Bytes(d[name][i + 1]))
_metadata.append(str(ip))
_metadata.append(encode_hex(d[name][i + 2]))
i += 3
d[name] = _metadata
elif name in ('metadata', ) and self.category == 3:
_metadata = []
i = 0
while i < len(d[name]):
_metadata.append(bytes_to_int(d[name][i]))
if _metadata[-1] == 1:
ip = IPv4Address(Bytes(d[name][i + 1]))
else:
ip = IPv6Address(Bytes(d[name][i + 1]))
_metadata.append(str(ip))
_metadata.append(bytes_to_int(d[name][i + 2]))
_metadata.append(bytes_to_int(d[name][i + 3]))
i += 4
d[name] = _metadata
d['sender'] = '0x' + encode_hex(self.sender)
d['hash'] = '0x' + encode_hex(self.hash)
return d
def secure_privtopub(priv):
if len(priv) == 64:
return encode_hex(secure_privtopub(decode_hex(priv)))
if openssl:
k = openssl.CKey()
k.generate(priv)
return k.get_pubkey()
else:
return bitcoin.privtopub(priv)
def secure_privtopub(priv):
if len(priv) == 64:
return encode_hex(secure_privtopub(decode_hex(priv)))
if openssl:
k = openssl.CKey()
k.generate(priv)
return k.get_pubkey()
else:
return bitcoin.privtopub(priv)
def make_keystore_json(priv, pw, kdf="pbkdf2", cipher="aes-128-ctr"):
# Get the hash function and default parameters
if kdf not in kdfs:
raise Exception("Hash algo %s not supported" % kdf)
kdfeval = kdfs[kdf]["calc"]
kdfparams = kdfs[kdf]["mkparams"]()
# Compute derived key
derivedkey = kdfeval(pw, kdfparams)
# Get the cipher and default parameters
if cipher not in ciphers:
raise Exception("Encryption algo %s not supported" % cipher)
encrypt = ciphers[cipher]["encrypt"]
cipherparams = ciphers[cipher]["mkparams"]()
# Produce the encryption key and encrypt
enckey = derivedkey[:16]
c = encrypt(priv, enckey, cipherparams)
# Compute the MAC
mac = sha3(derivedkey[16:32] + c)
# Make a UUID
u = encode_hex(os.urandom(16))
if sys.version_info.major == 3:
u = bytes(u, 'utf-8')
uuid = b'-'.join((u[:8], u[8:12], u[12:16], u[16:20], u[20:]))
# Return the keystore json
return {
"crypto": {
"cipher": cipher,
"ciphertext": encode_hex(c),
"cipherparams": cipherparams,
"kdf": kdf,
"kdfparams": kdfparams,
"mac": encode_hex(mac),
"version": 1
},
"id": uuid,
"version": 3
}
def eth_privtoaddr(priv):
pub = encode_pubkey(secure_privtopub(priv), 'bin_electrum')
return encode_hex(sha3(pub)[12:])
def bin_to_nibbles(s):
return [hti[c] for c in utils.encode_hex(s)]
def _build_message_pair(data): hex_data = encode_hex(data) size = len(hex_data) * 4 return (size, hex_data)
def hexdigest(self):
"""Like digest() except the digest is returned as a string of hex digits
This may be used to exchange the value safely in email or other
non-binary environments."""
return encode_hex(self.digest())
def eth_privtoaddr(priv):
pub = bitcoin.encode_pubkey(secure_privtopub(priv), 'bin_electrum')
return encode_hex(sha3(pub)[12:])
def mk_pbkdf2_params():
params = PBKDF2_CONSTANTS.copy()
params['salt'] = encode_hex(os.urandom(16))
return params
def mk_scrypt_params():
params = SCRYPT_CONSTANTS.copy()
params['salt'] = encode_hex(os.urandom(16))
return params
def aes_mkparams():
return {"iv": encode_hex(os.urandom(16))}
transaction = utils.web3tx_to_ethtx(transaction)
address = ContractAddress(address_hex,
creation_transaction=transaction)
print("Address: contract.")
except FileNotFoundError:
print("Error: Local Web3 node not found. Did you forget to start it?")
exit(2)
except AssertionError:
print("Error: Transaction {} is not a creation "
"transaction.".format(options.sent_transaction))
else:
print("Error: Please specify either sent trasaction (-p) or creation transaction (-c) flag.")
exit(1)
encrypted_message = address.encrypt(message)
print("Encrypted message: {}".format(utils.add_0x_prefix(utils.encode_hex(encrypted_message))))
owner = utils.decode_hex(utils.remove_0x_prefix(address.owner_address))
assert len(owner) == 20
message_data = owner + encrypted_message + info_bytes()
print("Message to send: {}".format(utils.add_0x_prefix(utils.encode_hex(message_data))))
if options.send:
print("Sending transaction to: {}".format(address_hex))
sender_account = options.send_from
if not utils.is_hex_address(sender_account):
try:
sender_account = web3.personal.listAccounts[int(sender_account)]
except ValueError:
print("Error: Invalid sender account. Should be your local Ethereum account "
"or its index number. See --list flag.")
exit(1)
def eth_privtoaddr(priv):
pub = encode_pubkey(secure_privtopub(priv), "bin_electrum")
return encode_hex(sha3(pub)[12:])
