1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
#! /usr/bin/env python
from __future__ import print_function
import argparse
import json
import os
import sys
import yaml
from . import *
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument("--key", help="Account encryption key", default="")
commands = parser.add_subparsers()
create_account = commands.add_parser("create_account", help="Create a new account")
create_account.add_argument("account_file", help="Local account file")
def do_create_account(args):
if os.path.exists(args.account_file):
sys.stderr.write("Account %r file already exists" % (
args.account_file,
))
sys.exit(1)
account = Account()
account.create()
with open(args.account_file, "wb") as f:
f.write(account.pickle(args.key))
create_account.set_defaults(func=do_create_account)
keys = commands.add_parser("keys", help="List public keys for an account")
keys.add_argument("account_file", help="Local account file")
keys.add_argument("--json", action="store_true", help="Output as JSON")
def do_keys(args):
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
result = {
"account_keys": account.identity_keys(),
"one_time_keys": account.one_time_keys(),
}
try:
if args.json:
json.dump(result, sys.stdout, indent=4)
else:
yaml.safe_dump(result, sys.stdout, default_flow_style=False)
except:
pass
keys.set_defaults(func=do_keys)
def do_id_key(args):
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
print(account.identity_keys()['curve25519'])
id_key = commands.add_parser("identity_key", help="Get the identity key for an account")
id_key.add_argument("account_file", help="Local account file")
id_key.set_defaults(func=do_id_key)
def do_one_time_key(args):
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
keys = account.one_time_keys()['curve25519'].values()
key_num = args.key_num
if key_num < 1 or key_num > len(keys):
print(
"Invalid key number %i: %i keys available" %
(key_num, len(keys)),
file=sys.stderr
)
sys.exit(1)
print (keys[key_num-1])
one_time_key = commands.add_parser("one_time_key",
help="Get a one-time key for the account")
one_time_key.add_argument("account_file", help="Local account file")
one_time_key.add_argument("--key-num", "-n", type=int, default=1,
help="Index of key to retrieve (default: 1)")
one_time_key.set_defaults(func=do_one_time_key)
sign = commands.add_parser("sign", help="Sign a message")
sign.add_argument("account_file", help="Local account file")
sign.add_argument("message_file", help="Message to sign")
sign.add_argument("signature_file", help="Signature to output")
def do_sign(args):
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
with open_in(args.message_file) as f:
message = f.read()
signature = account.sign(message)
with open_out(args.signature_file) as f:
f.write(signature)
sign.set_defaults(func=do_sign)
generate_keys = commands.add_parser("generate_keys", help="Generate one time keys")
generate_keys.add_argument("account_file", help="Local account file")
generate_keys.add_argument("count", type=int, help="Number of keys to generate")
def do_generate_keys(args):
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
account.generate_one_time_keys(args.count)
with open(args.account_file, "wb") as f:
f.write(account.pickle(args.key))
generate_keys.set_defaults(func=do_generate_keys)
outbound = commands.add_parser("outbound", help="Create an outbound session")
outbound.add_argument("account_file", help="Local account file")
outbound.add_argument("session_file", help="Local session file")
outbound.add_argument("identity_key", help="Remote identity key")
outbound.add_argument("one_time_key", help="Remote one time key")
def do_outbound(args):
if os.path.exists(args.session_file):
sys.stderr.write("Session %r file already exists" % (
args.session_file,
))
sys.exit(1)
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
session = Session()
session.create_outbound(
account, args.identity_key, args.one_time_key
)
with open(args.session_file, "wb") as f:
f.write(session.pickle(args.key))
outbound.set_defaults(func=do_outbound)
def open_in(path):
if path == "-":
return sys.stdin
else:
return open(path, "rb")
def open_out(path):
if path == "-":
return sys.stdout
else:
return open(path, "wb")
inbound = commands.add_parser("inbound", help="Create an inbound session")
inbound.add_argument("account_file", help="Local account file")
inbound.add_argument("session_file", help="Local session file")
inbound.add_argument("message_file", help="Message", default="-")
inbound.add_argument("plaintext_file", help="Plaintext", default="-")
def do_inbound(args):
if os.path.exists(args.session_file):
sys.stderr.write("Session %r file already exists" % (
args.session_file,
))
sys.exit(1)
account = Account()
with open(args.account_file, "rb") as f:
account.unpickle(args.key, f.read())
with open_in(args.message_file) as f:
message_type = f.read(8)
message = f.read()
if message_type != "PRE_KEY ":
sys.stderr.write("Expecting a PRE_KEY message")
sys.exit(1)
session = Session()
session.create_inbound(account, message)
plaintext = session.decrypt(0, message)
with open(args.session_file, "wb") as f:
f.write(session.pickle(args.key))
with open_out(args.plaintext_file) as f:
f.write(plaintext)
inbound.set_defaults(func=do_inbound)
session_id = commands.add_parser("session_id", help="Session ID")
session_id.add_argument("session_file", help="Local session file")
def do_session_id(args):
session = Session()
with open(args.session_file, "rb") as f:
session.unpickle(args.key, f.read())
sys.stdout.write(session.session_id() + "\n")
session_id.set_defaults(func=do_session_id)
encrypt = commands.add_parser("encrypt", help="Encrypt a message")
encrypt.add_argument("session_file", help="Local session file")
encrypt.add_argument("plaintext_file", help="Plaintext", default="-")
encrypt.add_argument("message_file", help="Message", default="-")
def do_encrypt(args):
session = Session()
with open(args.session_file, "rb") as f:
session.unpickle(args.key, f.read())
with open_in(args.plaintext_file) as f:
plaintext = f.read()
message_type, message = session.encrypt(plaintext)
with open(args.session_file, "wb") as f:
f.write(session.pickle(args.key))
with open_out(args.message_file) as f:
f.write(["PRE_KEY ", "MESSAGE "][message_type])
f.write(message)
encrypt.set_defaults(func=do_encrypt)
decrypt = commands.add_parser("decrypt", help="Decrypt a message")
decrypt.add_argument("session_file", help="Local session file")
decrypt.add_argument("message_file", help="Message", default="-")
decrypt.add_argument("plaintext_file", help="Plaintext", default="-")
def do_decrypt(args):
session = Session()
with open(args.session_file, "rb") as f:
session.unpickle(args.key, f.read())
with open_in(args.message_file) as f:
message_type = f.read(8)
message = f.read()
if message_type not in {"PRE_KEY ", "MESSAGE "}:
sys.stderr.write("Expecting a PRE_KEY or MESSAGE message")
sys.exit(1)
message_type = 1 if message_type == "MESSAGE " else 0
plaintext = session.decrypt(message_type, message)
with open(args.session_file, "wb") as f:
f.write(session.pickle(args.key))
with open_out(args.plaintext_file) as f:
f.write(plaintext)
decrypt.set_defaults(func=do_decrypt)
args = parser.parse_args()
args.func(args)
|
