def __init__(self, id = None, iteration = None, chainKey = None, signatureKey = None, serialized = None):
"""
:type id: int
:type iteration: int
:type chainKey: bytearray
:type signatureKey: ECPublicKey
"""
assert bool(id is not None and iteration is not None and chainKey is not None and signatureKey is not None)\
^ bool(serialized),\
"Either pass arguments or serialized data"
if serialized:
try:
messageParts = ByteUtil.split(serialized, 1, len(serialized)- 1)
version = messageParts[0][0]
message = messageParts[1]
if ByteUtil.highBitsToInt(version) < 3:
raise LegacyMessageException("Legacy message: %s" % ByteUtil.highBitsToInt(version))
if ByteUtil.highBitsToInt(version) > self.__class__.CURRENT_VERSION:
raise InvalidMessageException("Unknown version: %s" % ByteUtil.highBitsToInt(version))
distributionMessage = whisperprotos.SenderKeyDistributionMessage()
distributionMessage.ParseFromString(message)
if distributionMessage.id is None or distributionMessage.iteration is None\
or distributionMessage.chainKey is None or distributionMessage.signingKey is None:
raise InvalidMessageException("Incomplete message")
self.serialized = serialized
self.id = distributionMessage.id
self.iteration = distributionMessage.iteration
self.chainKey = distributionMessage.chainKey
self.signatureKey = Curve.decodePoint(bytearray(distributionMessage.signingKey), 0)
except Exception as e:
raise InvalidMessageException(e)
else:
version = [ByteUtil.intsToByteHighAndLow(self.__class__.CURRENT_VERSION, self.__class__.CURRENT_VERSION)]
self.id = id
self.iteration = iteration
self.chainKey = chainKey
self.signatureKey = signatureKey
message = whisperprotos.SenderKeyDistributionMessage()
message.id = id
message.iteration = iteration
message.chainKey= bytes(chainKey)
message.signingKey = signatureKey.serialize()
message = message.SerializeToString()
self.serialized = bytes(ByteUtil.combine(version, message))
def __init__(self, keyId = None, iteration = None, ciphertext = None, signatureKey = None, serialized = None):
assert bool(keyId is not None and iteration is not None and ciphertext is not None and signatureKey is not None)\
^ bool(serialized),\
"Either pass arguments or serialized data"
if serialized:
try:
messageParts = ByteUtil.split(serialized, 1, len(serialized)- 1 - self.__class__.SIGNATURE_LENGTH,
self.__class__.SIGNATURE_LENGTH)
version = messageParts[0][0]
message = messageParts[1]
signature = messageParts[2]
if ByteUtil.highBitsToInt(version) < 3:
raise LegacyMessageException("Legacy message: %s" % ByteUtil.highBitsToInt(version))
if ByteUtil.highBitsToInt(version) > self.__class__.CURRENT_VERSION:
raise InvalidMessageException("Unknown version: %s" % ByteUtil.highBitsToInt(version))
senderKeyMessage = whisperprotos.SenderKeyMessage()
senderKeyMessage.ParseFromString(message)
if senderKeyMessage.id is None or senderKeyMessage.iteration is None\
or senderKeyMessage.ciphertext is None:
raise InvalidMessageException("Incomplete message")
self.serialized = serialized
self.messageVersion = ByteUtil.highBitsToInt(version)
self.keyId = senderKeyMessage.id
self.iteration = senderKeyMessage.iteration
self.ciphertext = senderKeyMessage.ciphertext
except Exception as e:
raise InvalidMessageException(e)
else:
version = [ByteUtil.intsToByteHighAndLow(self.__class__.CURRENT_VERSION, self.__class__.CURRENT_VERSION)]
message = whisperprotos.SenderKeyMessage()
message.id = keyId
message.iteration = iteration
message.ciphertext = ciphertext
message = message.SerializeToString()
signature = self.getSignature(signatureKey, bytes(ByteUtil.combine(version, message)))
self.serialized = bytes(ByteUtil.combine(version, message, signature))
self.messageVersion = self.__class__.CURRENT_VERSION
self.keyId = keyId
self.iteration = iteration
self.ciphertext = ciphertext
def __init__(self, messageVersion = None, sequence = None, flags=None,
baseKey = None, baseKeySignature = None,
ratchetKey = None,
identityKey = None,
serialized = None):
"""
:type messageVersion: int
:type sequence: int
:type flags:int
:type baseKey: ECPublicKey
:type baseKeySignature: bytearray
:type ratchetKey: ECPublicKey
:type identityKey: IdentityKey
:type serialized: bytearray
"""
if serialized:
try:
parts = ByteUtil.split(serialized, 1, len(serialized)- 1)
self.version = ByteUtil.highBitsToInt(parts[0][0])
self.supportedVersion = ByteUtil.lowBitsToInt(parts[0][0])
if self.version <= CiphertextMessage.UNSUPPORTED_VERSION:
raise LegacyMessageException("Unsupportmessageed legacy version: %s" % self.version)
if self.version > CiphertextMessage.CURRENT_VERSION:
raise InvalidVersionException("Unkown version: %s" % self.version)
message = whisperprotos.KeyExchangeMessage()
message.ParseFromString(bytes(parts[1]))
if not message.HasField("id") or not message.HasField("baseKey")\
or not message.HasField("ratchetKey") or not message.HasField("identityKey")\
or (self.version >= 3 and not message.HasField("baseKeySignature")):
raise InvalidMessageException("Some required fields are missing!")
self.sequence = message.id >> 5
self.flags = message.id & 0x1f
self.serialized = serialized
self.baseKey = Curve.decodePoint(bytearray(message.baseKey), 0)
self.baseKeySignature = message.baseKeySignature
self.ratchetKey = Curve.decodePoint(bytearray(message.ratchetKey), 0)
self.identityKey = IdentityKey(message.identityKey, 0)
except InvalidKeyException as e:
raise InvalidMessageException(e)
else:
self.supportedVersion = CiphertextMessage.CURRENT_VERSION
self.version = messageVersion
self.sequence = sequence
self.flags = flags
self.baseKey = baseKey
self.baseKeySignature = baseKeySignature
self.ratchetKey = ratchetKey
self.identityKey = identityKey
version = [ByteUtil.intsToByteHighAndLow(self.version, self.supportedVersion)]
keyExchangeMessage = whisperprotos.KeyExchangeMessage()
keyExchangeMessage.id = (self.sequence << 5) | self.flags
keyExchangeMessage.baseKey = baseKey.serialize()
keyExchangeMessage.ratchetKey = ratchetKey.serialize()
keyExchangeMessage.identityKey = identityKey.serialize()
if messageVersion >= 3:
keyExchangeMessage.baseKeySignature = baseKeySignature
self.serialized = ByteUtil.combine(version, keyExchangeMessage.SerializeToString())