def unpack(self, data: bytes) -> bytes:
ticket_lifetime_int = PackableInt(4, 0)
data = ticket_lifetime_int.unpack(data)
self.ticket_lifetime = ticket_lifetime_int.value
ticket_age_add_int = PackableInt(4, 0)
data = ticket_age_add_int.unpack(data)
self.ticket_age_add = ticket_age_add_int.value
ticket_nonce_vec = Vector(1)
data = ticket_nonce_vec.unpack(data)
self.ticket_nonce = ticket_nonce_vec.data
ticket_vec = Vector(2)
data = ticket_vec.unpack(data)
self.ticket = ticket_vec.data
ext_vec = Vector(2)
data = ext_vec.unpack(data)
ext_data: bytes = ext_vec.data
extensions = []
while len(ext_data) > 0:
ext = Extension()
ext_data = ext.unpack(ext_data)
extension = Extension.construct(ext.ext_type)
if extension:
ext.ext: Vector
extension.unpack(ext.ext.data)
ext.ext = extension
extensions.append(ext)
self.extensions = tuple(extensions)
return data
class HkdfLabel(Protocol):
def __init__(self, length: int, label: bytes, context: bytes):
self.length = PackableInt(2, length)
self.label = Vector(1, b"tls13 " + label)
self.context = Vector(1, context)
def pack(self) -> bytes:
return self.length.pack() + self.label.pack() + self.context.pack()
def unpack(self, data: bytes) -> bytes:
pass
def pack(self) -> bytes:
data = BytesIO()
data.write(ProtocolVersion(self.legacy_record_version).pack())
data.write(self.random)
data.write(Vector(1, self.legacy_session_id).pack())
cipher_suites_data = b"".join(
(cipher_suite.pack() for cipher_suite in self.cipher_suites))
data.write(Vector(2, cipher_suites_data).pack())
legacy_compression_methods_data = b"".join(
(legacy_compression_method.pack()
for legacy_compression_method in self.legacy_compression_methods))
data.write(Vector(1, legacy_compression_methods_data).pack())
extensions_data = b"".join(
(extension.pack() for extension in self.extensions))
data.write(Vector(2, extensions_data).pack())
return data.getvalue()
def unpack(self, data: bytes) -> bytes:
extension_vec = Vector(2)
data = extension_vec.unpack(data)
ext_data: bytes = extension_vec.data
extensions = []
while len(ext_data) > 0:
ext = Extension()
ext_data = ext.unpack(ext_data)
extension = Extension.construct(ext.ext_type)
if extension:
ext.ext: Vector
extension.unpack(ext.ext.data)
ext.ext = extension
extensions.append(ext)
extensions = []
self.extensions = tuple(extensions)
return data
def unpack(self, data: bytes) -> bytes:
legacy_version_int = ProtocolVersion(0)
data = legacy_version_int.unpack(data)
self.legacy_version = legacy_version_int.value
assert len(data) >= 32, f"no enough bytes to unpack random"
self.random = data[:32]
data = data[32:]
legacy_session_id_echo_vec = Vector(1)
data = legacy_session_id_echo_vec.unpack(data)
self.legacy_session_id_echo = legacy_session_id_echo_vec.data
self.cipher_suite, data = CipherSuite.unpack(data)
self.legacy_compression_method, data = CompressionMethod.unpack(data)
extension_vec = Vector(2)
data = extension_vec.unpack(data)
ext_data: bytes = extension_vec.data
extensions = []
while len(ext_data) > 0:
ext = Extension()
ext_data = ext.unpack(ext_data)
extension = Extension.construct(ext.ext_type)
if extension:
ext.ext: Vector
extension.unpack(ext.ext.data)
ext.ext = extension
extensions.append(ext)
self.extensions = tuple(extensions)
return data
def pack(self) -> bytes:
data = memoryview(self.data)
fragments = []
while True:
if len(data) > 16384:
fragments.append(data[:16384])
data = data[16384:]
else:
fragments.append(data)
break
return b"".join(
(self.content_type.pack() + self.legacy_record_version.pack() +
Vector(2, fragment).pack() for fragment in fragments))
def unpack(self, data: bytes) -> bytes:
cert_req_ctx_vec = Vector(1)
data = cert_req_ctx_vec.unpack(data)
self.cert_req_ctx = cert_req_ctx_vec.data
cert_entries_vec = Vector(3)
data = cert_entries_vec.unpack(data)
cert_entries_data: bytes = cert_entries_vec.data
cert_entries = []
while len(cert_entries_data) > 0:
cert_entry = CertificateEntry()
cert_entries_data = cert_entry.unpack(cert_entries_data)
cert_entries.append(cert_entry)
self.cert_entries = tuple(cert_entries)
return data
def unpack(self, data: bytes) -> bytes:
cert_req_ctx_vvc = Vector(1)
data = cert_req_ctx_vvc.unpack(data)
self.certificate_request_context = cert_req_ctx_vvc.data
extension_vec = Vector(2)
data = extension_vec.unpack(data)
ext_data: bytes = extension_vec.data
extensions = []
while len(ext_data) > 0:
ext = Extension()
ext_data = ext.unpack(ext_data)
extensions.append(ext)
self.extensions = tuple(extensions)
return data
def unpack(self, data: bytes) -> bytes:
cert_data_vec = Vector(3)
data = cert_data_vec.unpack(data)
self.cert_data = cert_data_vec.data
ext_data_vec = Vector(2)
data = ext_data_vec.unpack(data)
ext_data: bytes = ext_data_vec.data
extensions = []
while len(ext_data) > 0:
ext = Extension()
ext_data = ext.unpack(ext_data)
extensions.append(ext)
self.extensions = tuple(extensions)
return data
def pack(self) -> bytes:
return Vector(3, self.cert_data).pack() + Vector(
2, self.extensions).pack()
def pack(self) -> bytes:
extensions_data: bytes = b"".join(extension.pack()
for extension in self.extensions)
return Vector(1, self.certificate_request_context).pack() + Vector(
2, extensions_data).pack()
def pack(self) -> bytes:
return self.handshake_type.pack() + Vector(3,
self.handshake_data).pack()
def pack(self) -> bytes:
return Vector(1, self.binder).pack()
def pack(self) -> bytes:
return self.algorithm.pack() + Vector(2, self.signature).pack()
def pack(self) -> bytes:
return self.name_type.pack() + Vector(2, self.name).pack()
def pack(self) -> bytes:
groups_data = b"".join((group.pack() for group in self.groups))
return Vector(2, groups_data).pack()
def pack(self) -> bytes:
sig_schemes_data = b"".join((sig_scheme.pack() for sig_scheme in self.sig_schemes))
return Vector(2, sig_schemes_data).pack()
def pack(self) -> bytes:
return self.ext_type.pack() + Vector(2, self.ext.pack()).pack()
def __init__(self, protocol: Protocol = None):
if protocol is None:
protocol = Vector(2)
self.ext = protocol
self.ext_type: ExtensionType = protocol.type
def pack(self) -> bytes:
return Vector(2, self.server_name_list).pack()
def pack(self) -> bytes:
return Vector(1, self.cert_req_ctx).pack() + Vector(
3, self.cert_entries).pack()
def pack(self) -> bytes:
return PackableInt(4, self.ticket_lifetime).pack() + PackableInt(4, self.ticket_age_add).pack() \
+ Vector(1, self.ticket_nonce).pack() + Vector(2, self.ticket).pack() + Vector(2, self.extensions).pack()
def __init__(self, length: int, label: bytes, context: bytes):
self.length = PackableInt(2, length)
self.label = Vector(1, b"tls13 " + label)
self.context = Vector(1, context)
def pack(self) -> bytes:
identities_data = b"".join((identity.pack() for identity in self.identities))
binders_data = b"".join((binder.pack() for binder in self.binders))
return Vector(2, identities_data).pack() + Vector(2, binders_data).pack()
def unpack(self, data: bytes) -> bytes:
self.algorithm, data = SignatureScheme.unpack(data)
signature_vec = Vector(2)
data = signature_vec.unpack(data)
self.signature = signature_vec.data
return data
def unpack(self, data: bytes) -> bytes:
self.key_exchange.group, data = NamedGroup.unpack(data)
key_exchange_vec = Vector(2)
data = key_exchange_vec.unpack(data)
self.key_exchange.unpack(key_exchange_vec.data)
return data
def pack(self) -> bytes:
key_shares_data = b"".join((key_share.pack() for key_share in self.key_shares))
return Vector(2, key_shares_data).pack()
def pack(self) -> bytes:
extensions_data: bytes = b"".join(extension.pack()
for extension in self.extensions)
return Vector(2, extensions_data).pack()
def pack(self) -> bytes:
return Vector(1, self.psk_key_exchange_modes).pack()
def pack(self) -> bytes:
return Vector(2, self.identity).pack() + PackableInt(4, self.obfuscated_ticket_age).pack()