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/* Copyright 2016 OpenMarket Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "olm/inbound_group_session.h"
#include "olm/outbound_group_session.h"
#include "unittest.hh"
int main() {
{
TestCase test_case("Pickle outbound group session");
size_t size = olm_outbound_group_session_size();
uint8_t memory[size];
OlmOutboundGroupSession *session = olm_outbound_group_session(memory);
size_t pickle_length = olm_pickle_outbound_group_session_length(session);
uint8_t pickle1[pickle_length];
size_t res = olm_pickle_outbound_group_session(
session, "secret_key", 10, pickle1, pickle_length
);
assert_equals(pickle_length, res);
uint8_t pickle2[pickle_length];
memcpy(pickle2, pickle1, pickle_length);
uint8_t buffer2[size];
OlmOutboundGroupSession *session2 = olm_outbound_group_session(buffer2);
res = olm_unpickle_outbound_group_session(
session2, "secret_key", 10, pickle2, pickle_length
);
assert_not_equals((size_t)-1, res);
assert_equals(pickle_length,
olm_pickle_outbound_group_session_length(session2));
res = olm_pickle_outbound_group_session(
session2, "secret_key", 10, pickle2, pickle_length
);
assert_equals(pickle_length, res);
assert_equals(pickle1, pickle2, pickle_length);
}
{
TestCase test_case("Pickle inbound group session");
size_t size = olm_inbound_group_session_size();
uint8_t memory[size];
OlmInboundGroupSession *session = olm_inbound_group_session(memory);
size_t pickle_length = olm_pickle_inbound_group_session_length(session);
uint8_t pickle1[pickle_length];
size_t res = olm_pickle_inbound_group_session(
session, "secret_key", 10, pickle1, pickle_length
);
assert_equals(pickle_length, res);
uint8_t pickle2[pickle_length];
memcpy(pickle2, pickle1, pickle_length);
uint8_t buffer2[size];
OlmInboundGroupSession *session2 = olm_inbound_group_session(buffer2);
res = olm_unpickle_inbound_group_session(
session2, "secret_key", 10, pickle2, pickle_length
);
assert_not_equals((size_t)-1, res);
assert_equals(pickle_length,
olm_pickle_inbound_group_session_length(session2));
res = olm_pickle_inbound_group_session(
session2, "secret_key", 10, pickle2, pickle_length
);
assert_equals(pickle1, pickle2, pickle_length);
}
{
TestCase test_case("Group message send/receive");
uint8_t random_bytes[] =
"0123456789ABDEF0123456789ABCDEF"
"0123456789ABDEF0123456789ABCDEF"
"0123456789ABDEF0123456789ABCDEF"
"0123456789ABDEF0123456789ABCDEF"
"0123456789ABDEF0123456789ABCDEF"
"0123456789ABDEF0123456789ABCDEF";
/* build the outbound session */
size_t size = olm_outbound_group_session_size();
uint8_t memory[size];
OlmOutboundGroupSession *session = olm_outbound_group_session(memory);
assert_equals((size_t)160,
olm_init_outbound_group_session_random_length(session));
size_t res = olm_init_outbound_group_session(
session, random_bytes, sizeof(random_bytes));
assert_equals((size_t)0, res);
assert_equals(0U, olm_outbound_group_session_message_index(session));
size_t session_key_len = olm_outbound_group_session_key_length(session);
uint8_t session_key[session_key_len];
olm_outbound_group_session_key(session, session_key, session_key_len);
/* encode the message */
uint8_t plaintext[] = "Message";
size_t plaintext_length = sizeof(plaintext) - 1;
size_t msglen = olm_group_encrypt_message_length(
session, plaintext_length);
uint8_t msg[msglen];
res = olm_group_encrypt(session, plaintext, plaintext_length,
msg, msglen);
assert_equals(msglen, res);
assert_equals(1U, olm_outbound_group_session_message_index(session));
/* build the inbound session */
size = olm_inbound_group_session_size();
uint8_t inbound_session_memory[size];
OlmInboundGroupSession *inbound_session =
olm_inbound_group_session(inbound_session_memory);
res = olm_init_inbound_group_session(
inbound_session, session_key, session_key_len);
assert_equals((size_t)0, res);
/* Check the session ids */
size_t out_session_id_len = olm_outbound_group_session_id_length(session);
uint8_t out_session_id[out_session_id_len];
assert_equals(out_session_id_len, olm_outbound_group_session_id(
session, out_session_id, out_session_id_len
));
size_t in_session_id_len = olm_inbound_group_session_id_length(
inbound_session
);
uint8_t in_session_id[in_session_id_len];
assert_equals(in_session_id_len, olm_inbound_group_session_id(
inbound_session, in_session_id, in_session_id_len
));
assert_equals(in_session_id_len, out_session_id_len);
assert_equals(out_session_id, in_session_id, in_session_id_len);
/* decode the message */
/* olm_group_decrypt_max_plaintext_length destroys the input so we have to
copy it. */
uint8_t msgcopy[msglen];
memcpy(msgcopy, msg, msglen);
size = olm_group_decrypt_max_plaintext_length(inbound_session, msgcopy, msglen);
uint8_t plaintext_buf[size];
uint32_t message_index;
res = olm_group_decrypt(inbound_session, msg, msglen,
plaintext_buf, size, &message_index);
assert_equals(plaintext_length, res);
assert_equals(plaintext, plaintext_buf, res);
assert_equals(message_index, uint32_t(0));
}
{
TestCase test_case("Invalid signature group message");
uint8_t plaintext[] = "Message";
size_t plaintext_length = sizeof(plaintext) - 1;
uint8_t session_key[] =
"AgAAAAAwMTIzNDU2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMzQ1Njc4OUFCREVGM"
"DEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkRFRjAxMjM0NTY3ODlBQkNERUYwMTIzND"
"U2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMztqJ7zOtqQtYqOo0CpvDXNlMhV3HeJ"
"DpjrASKGLWdop4lx1cSN3Xv1TgfLPW8rhGiW+hHiMxd36nRuxscNv9k4oJA/KP+o0mi1w"
"v44StrEJ1wwx9WZHBUIWkQbaBSuBDw";
uint8_t message[] =
"AwgAEhAcbh6UpbByoyZxufQ+h2B+8XHMjhR69G8nP4pNZGl/3QMgrzCZPmP+F2aPLyKPz"
"xRPBMUkeXRJ6Iqm5NeOdx2eERgTW7P20CM+lL3Xpk+ZUOOPvsSQNaAL";
size_t msglen = sizeof(message)-1;
/* build the inbound session */
size_t size = olm_inbound_group_session_size();
uint8_t inbound_session_memory[size];
OlmInboundGroupSession *inbound_session =
olm_inbound_group_session(inbound_session_memory);
size_t res = olm_init_inbound_group_session(
inbound_session, session_key, sizeof(session_key)-1
);
assert_equals((size_t)0, res);
/* decode the message */
/* olm_group_decrypt_max_plaintext_length destroys the input so we have to
copy it. */
uint8_t msgcopy[msglen];
memcpy(msgcopy, message, msglen);
size = olm_group_decrypt_max_plaintext_length(
inbound_session, msgcopy, msglen
);
memcpy(msgcopy, message, msglen);
uint8_t plaintext_buf[size];
uint32_t message_index;
res = olm_group_decrypt(
inbound_session, msgcopy, msglen, plaintext_buf, size, &message_index
);
assert_equals(message_index, uint32_t(0));
assert_equals(plaintext_length, res);
assert_equals(plaintext, plaintext_buf, res);
/* now twiddle the signature */
message[msglen-1] = 'E';
memcpy(msgcopy, message, msglen);
assert_equals(
size,
olm_group_decrypt_max_plaintext_length(
inbound_session, msgcopy, msglen
)
);
memcpy(msgcopy, message, msglen);
res = olm_group_decrypt(
inbound_session, msgcopy, msglen,
plaintext_buf, size, &message_index
);
assert_equals((size_t)-1, res);
assert_equals(
std::string("BAD_SIGNATURE"),
std::string(olm_inbound_group_session_last_error(inbound_session))
);
}
}
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