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from enum import Enum
from sequoia.core import Context, NetworkPolicy
from sequoia.openpgp import Tag, PacketParser
pgp = "../../../openpgp/tests/data/messages/encrypted-aes128-password-123456789.gpg"
plain = "../../../openpgp/tests/data/messages/a-cypherpunks-manifesto.txt"
def test_decryption():
ctx = Context(network_policy=NetworkPolicy.Offline,
ephemeral=True)
class State(Enum):
# XXX: In Python 3.6, we can use enum.auto() to assign values.
# But we want to support Debian 9, which uses Python 3.5, as
# long as it is Debian stable.
Start = 1
Decrypted = 2
Deciphered = 3
Done = 4
state = State.Start
algo, key = None, None
ppr = PacketParser.open(ctx, pgp)
while True:
pp = ppr.packet_parser()
if not pp:
break
packet = pp.packet
tag = packet.tag
print(state, pp.recursion_depth, packet)
if state == State.Start:
assert pp.recursion_depth == 0
if tag == Tag.SKESK:
algo, key = packet.match().decrypt(b"123456789")
state = State.Decrypted
elif state == State.Decrypted:
assert pp.recursion_depth == 0
if tag == Tag.SEIP:
pp.decrypt(algo, key)
state = State.Deciphered
elif state == State.Deciphered:
assert pp.recursion_depth == 1
if tag == Tag.Literal:
body = pp.buffer_unread_content()
assert body[:].decode() == open(plain).read()
state = State.Done
_, ppr = pp.recurse()
assert ppr.eof().is_message()
assert state == State.Done
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