365 lines
14 KiB
C++
365 lines
14 KiB
C++
/* Copyright 2016 OpenMarket Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "olm/inbound_group_session.h"
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#include "olm/outbound_group_session.h"
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#include "testing.hh"
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#include "utils.hh"
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#include <vector>
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TEST_CASE("Pickle outbound group session") {
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size_t size = olm_outbound_group_session_size();
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std::vector<uint8_t> memory(size);
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OlmOutboundGroupSession *session = olm_outbound_group_session(memory.data());
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size_t pickle_length = olm_pickle_outbound_group_session_length(session);
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std::vector<uint8_t> pickle1(pickle_length);
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size_t res = olm_pickle_outbound_group_session(
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session, "secret_key", 10, pickle1.data(), pickle_length
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);
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CHECK_EQ(pickle_length, res);
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std::vector<uint8_t> pickle2(pickle1);
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std::vector<uint8_t> buffer2(size);
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OlmOutboundGroupSession *session2 = olm_outbound_group_session(buffer2.data());
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res = olm_unpickle_outbound_group_session(
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session2, "secret_key", 10, pickle2.data(), pickle_length
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);
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CHECK_NE((size_t)-1, res);
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CHECK_EQ(pickle_length,
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olm_pickle_outbound_group_session_length(session2));
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res = olm_pickle_outbound_group_session(
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session2, "secret_key", 10, pickle2.data(), pickle_length
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);
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CHECK_EQ(pickle_length, res);
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CHECK_EQ_SIZE(pickle1.data(), pickle2.data(), pickle_length);
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/* Deliberately corrupt the pickled session by supplying a junk suffix and
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* ensure this is caught as an error. */
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const size_t junk_length = 1;
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std::vector<std::uint8_t> junk_pickle(pickle_length + _olm_enc_output_length(junk_length));
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olm_pickle_outbound_group_session(
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session, "secret_key", 10, junk_pickle.data(), pickle_length
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);
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const size_t junk_pickle_length = add_junk_suffix_to_pickle(
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"secret_key", 10,
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junk_pickle.data(),
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pickle_length,
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junk_length);
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CHECK_EQ(std::size_t(-1),
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olm_unpickle_outbound_group_session(
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session,
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"secret_key", 10,
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junk_pickle.data(), junk_pickle_length
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));
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CHECK_EQ(OLM_PICKLE_EXTRA_DATA,
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olm_outbound_group_session_last_error_code(session));
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}
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TEST_CASE("Pickle inbound group session") {
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size_t size = olm_inbound_group_session_size();
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std::vector<uint8_t> memory(size);
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OlmInboundGroupSession *session = olm_inbound_group_session(memory.data());
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size_t pickle_length = olm_pickle_inbound_group_session_length(session);
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std::vector<uint8_t> pickle1(pickle_length);
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size_t res = olm_pickle_inbound_group_session(
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session, "secret_key", 10, pickle1.data(), pickle_length
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);
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CHECK_EQ(pickle_length, res);
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std::vector<uint8_t> pickle2(pickle1);
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std::vector<uint8_t> buffer2(size);
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OlmInboundGroupSession *session2 = olm_inbound_group_session(buffer2.data());
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res = olm_unpickle_inbound_group_session(
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session2, "secret_key", 10, pickle2.data(), pickle_length
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);
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CHECK_NE((size_t)-1, res);
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CHECK_EQ(pickle_length,
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olm_pickle_inbound_group_session_length(session2));
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res = olm_pickle_inbound_group_session(
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session2, "secret_key", 10, pickle2.data(), pickle_length
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);
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CHECK_EQ_SIZE(pickle1.data(), pickle2.data(), pickle_length);
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/* Deliberately corrupt the pickled session by supplying a junk suffix and
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* ensure this is caught as an error. */
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const size_t junk_length = 1;
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std::vector<std::uint8_t> junk_pickle(pickle_length + _olm_enc_output_length(junk_length));
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olm_pickle_inbound_group_session(
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session, "secret_key", 10, junk_pickle.data(), pickle_length
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);
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const size_t junk_pickle_length = add_junk_suffix_to_pickle(
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"secret_key", 10,
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junk_pickle.data(),
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pickle_length,
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junk_length);
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CHECK_EQ(std::size_t(-1),
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olm_unpickle_inbound_group_session(
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session,
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"secret_key", 10,
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junk_pickle.data(), junk_pickle_length
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));
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CHECK_EQ(OLM_PICKLE_EXTRA_DATA,
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olm_inbound_group_session_last_error_code(session));
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}
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TEST_CASE("Group message send/receive") {
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uint8_t random_bytes[] =
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"0123456789ABDEF0123456789ABCDEF"
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"0123456789ABDEF0123456789ABCDEF"
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"0123456789ABDEF0123456789ABCDEF"
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"0123456789ABDEF0123456789ABCDEF"
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"0123456789ABDEF0123456789ABCDEF"
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"0123456789ABDEF0123456789ABCDEF";
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/* build the outbound session */
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size_t size = olm_outbound_group_session_size();
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std::vector<uint8_t> memory(size);
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OlmOutboundGroupSession *session = olm_outbound_group_session(memory.data());
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CHECK_EQ((size_t)160,
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olm_init_outbound_group_session_random_length(session));
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size_t res = olm_init_outbound_group_session(
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session, random_bytes, sizeof(random_bytes));
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CHECK_EQ((size_t)0, res);
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CHECK_EQ(0U, olm_outbound_group_session_message_index(session));
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size_t session_key_len = olm_outbound_group_session_key_length(session);
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std::vector<uint8_t> session_key(session_key_len);
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olm_outbound_group_session_key(session, session_key.data(), session_key_len);
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/* encode the message */
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uint8_t plaintext[] = "Message";
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size_t plaintext_length = sizeof(plaintext) - 1;
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size_t msglen = olm_group_encrypt_message_length(
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session, plaintext_length);
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std::vector<uint8_t> msg(msglen);
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res = olm_group_encrypt(session, plaintext, plaintext_length,
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msg.data(), msglen);
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CHECK_EQ(msglen, res);
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CHECK_EQ(1U, olm_outbound_group_session_message_index(session));
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/* build the inbound session */
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size = olm_inbound_group_session_size();
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std::vector<uint8_t> inbound_session_memory(size);
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OlmInboundGroupSession *inbound_session =
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olm_inbound_group_session(inbound_session_memory.data());
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CHECK_EQ(0, olm_inbound_group_session_is_verified(inbound_session));
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res = olm_init_inbound_group_session(
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inbound_session, session_key.data(), session_key_len);
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CHECK_EQ((size_t)0, res);
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CHECK_EQ(1, olm_inbound_group_session_is_verified(inbound_session));
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/* Check the session ids */
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size_t out_session_id_len = olm_outbound_group_session_id_length(session);
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std::vector<uint8_t> out_session_id(out_session_id_len);
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CHECK_EQ(out_session_id_len, olm_outbound_group_session_id(
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session, out_session_id.data(), out_session_id_len
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));
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size_t in_session_id_len = olm_inbound_group_session_id_length(
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inbound_session
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);
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std::vector<uint8_t> in_session_id(in_session_id_len);
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CHECK_EQ(in_session_id_len, olm_inbound_group_session_id(
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inbound_session, in_session_id.data(), in_session_id_len
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));
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CHECK_EQ(in_session_id_len, out_session_id_len);
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CHECK_EQ_SIZE(out_session_id.data(), in_session_id.data(), in_session_id_len);
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/* decode the message */
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/* olm_group_decrypt_max_plaintext_length destroys the input so we have to
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copy it. */
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std::vector<uint8_t> msgcopy(msg);
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size = olm_group_decrypt_max_plaintext_length(inbound_session, msgcopy.data(), msglen);
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std::vector<uint8_t> plaintext_buf(size);
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uint32_t message_index;
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res = olm_group_decrypt(inbound_session, msg.data(), msglen,
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plaintext_buf.data(), size, &message_index);
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CHECK_EQ(plaintext_length, res);
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CHECK_EQ_SIZE(plaintext, plaintext_buf.data(), res);
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CHECK_EQ(message_index, uint32_t(0));
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}
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TEST_CASE("Inbound group session export/import") {
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uint8_t session_key[] =
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"AgAAAAAwMTIzNDU2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMzQ1Njc4OUFCREVGM"
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"DEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkRFRjAxMjM0NTY3ODlBQkNERUYwMTIzND"
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"U2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMw0bdg1BDq4Px/slBow06q8n/B9WBfw"
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"WYyNOB8DlUmXGGwrFmaSb9bR/eY8xgERrxmP07hFmD9uqA2p8PMHdnV5ysmgufE6oLZ5+"
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"8/mWQOW3VVTnDIlnwd8oHUYRuk8TCQ";
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const uint8_t message[] =
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"AwgAEhAcbh6UpbByoyZxufQ+h2B+8XHMjhR69G8F4+qjMaFlnIXusJZX3r8LnRORG9T3D"
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"XFdbVuvIWrLyRfm4i8QRbe8VPwGRFG57B1CtmxanuP8bHtnnYqlwPsD";
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const std::size_t msglen = sizeof(message)-1;
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/* init first inbound group session, and decrypt */
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std::size_t size = olm_inbound_group_session_size();
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std::vector<uint8_t> session_memory1(size);
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OlmInboundGroupSession *session1 =
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olm_inbound_group_session(session_memory1.data());
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CHECK_EQ(0, olm_inbound_group_session_is_verified(session1));
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std::size_t res = olm_init_inbound_group_session(
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session1, session_key, sizeof(session_key)-1
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);
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CHECK_EQ((size_t)0, res);
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CHECK_EQ(1, olm_inbound_group_session_is_verified(session1));
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/* olm_group_decrypt_max_plaintext_length destroys the input so we have to
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copy it. */
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std::vector<uint8_t> msgcopy(msglen);
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memcpy(msgcopy.data(), message, msglen);
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size = olm_group_decrypt_max_plaintext_length(session1, msgcopy.data(), msglen);
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std::vector<uint8_t> plaintext_buf(size);
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uint32_t message_index;
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memcpy(msgcopy.data(), message, msglen);
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res = olm_group_decrypt(
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session1, msgcopy.data(), msglen, plaintext_buf.data(), size, &message_index
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);
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CHECK_EQ((std::size_t)7, res);
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CHECK_EQ_SIZE((const uint8_t *)"Message", (const uint8_t*)plaintext_buf.data(), res);
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CHECK_EQ(uint32_t(0), message_index);
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/* export the keys */
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size = olm_export_inbound_group_session_length(session1);
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std::vector<uint8_t> export_memory(size);
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res = olm_export_inbound_group_session(
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session1, export_memory.data(), size, 0
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);
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CHECK_EQ(size, res);
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/* free the old session to check there is no shared data */
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olm_clear_inbound_group_session(session1);
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/* import the keys into another inbound group session */
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size = olm_inbound_group_session_size();
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std::vector<uint8_t> session_memory2(size);
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OlmInboundGroupSession *session2 =
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olm_inbound_group_session(session_memory2.data());
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res = olm_import_inbound_group_session(
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session2, export_memory.data(), export_memory.size()
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);
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CHECK_EQ((size_t)0, res);
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CHECK_EQ(0, olm_inbound_group_session_is_verified(session2));
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/* decrypt the message with the new session */
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memcpy(msgcopy.data(), message, msglen);
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size = olm_group_decrypt_max_plaintext_length(session2, msgcopy.data(), msglen);
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std::vector<uint8_t> plaintext_buf2(size);
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memcpy(msgcopy.data(), message, msglen);
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res = olm_group_decrypt(
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session2, msgcopy.data(), msglen, plaintext_buf2.data(), size, &message_index
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);
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CHECK_EQ((std::size_t)7, res);
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CHECK_EQ_SIZE((const uint8_t *)"Message", (const uint8_t *)plaintext_buf2.data(), res);
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CHECK_EQ(uint32_t(0), message_index);
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CHECK_EQ(1, olm_inbound_group_session_is_verified(session2));
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}
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TEST_CASE("Invalid signature group message") {
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uint8_t plaintext[] = "Message";
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size_t plaintext_length = sizeof(plaintext) - 1;
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uint8_t session_key[] =
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"AgAAAAAwMTIzNDU2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMzQ1Njc4OUFCREVGM"
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"DEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkRFRjAxMjM0NTY3ODlBQkNERUYwMTIzND"
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"U2Nzg5QUJERUYwMTIzNDU2Nzg5QUJDREVGMDEyMztqJ7zOtqQtYqOo0CpvDXNlMhV3HeJ"
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"DpjrASKGLWdop4lx1cSN3Xv1TgfLPW8rhGiW+hHiMxd36nRuxscNv9k4oJA/KP+o0mi1w"
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"v44StrEJ1wwx9WZHBUIWkQbaBSuBDw";
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uint8_t message[] =
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"AwgAEhAcbh6UpbByoyZxufQ+h2B+8XHMjhR69G8nP4pNZGl/3QMgrzCZPmP+F2aPLyKPz"
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"xRPBMUkeXRJ6Iqm5NeOdx2eERgTW7P20CM+lL3Xpk+ZUOOPvsSQNaAL";
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size_t msglen = sizeof(message)-1;
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/* build the inbound session */
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size_t size = olm_inbound_group_session_size();
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std::vector<uint8_t> inbound_session_memory(size);
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OlmInboundGroupSession *inbound_session =
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olm_inbound_group_session(inbound_session_memory.data());
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size_t res = olm_init_inbound_group_session(
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inbound_session, session_key, sizeof(session_key)-1
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);
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CHECK_EQ((size_t)0, res);
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/* decode the message */
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/* olm_group_decrypt_max_plaintext_length destroys the input so we have to
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copy it. */
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std::vector<uint8_t> msgcopy(msglen);
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memcpy(msgcopy.data(), message, msglen);
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size = olm_group_decrypt_max_plaintext_length(
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inbound_session, msgcopy.data(), msglen
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);
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memcpy(msgcopy.data(), message, msglen);
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std::vector<uint8_t> plaintext_buf(size);
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uint32_t message_index;
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res = olm_group_decrypt(
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inbound_session, msgcopy.data(), msglen, plaintext_buf.data(), size, &message_index
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);
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CHECK_EQ(message_index, uint32_t(0));
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CHECK_EQ(plaintext_length, res);
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CHECK_EQ_SIZE(plaintext, plaintext_buf.data(), res);
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/* now twiddle the signature */
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message[msglen-1] = 'E';
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memcpy(msgcopy.data(), message, msglen);
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CHECK_EQ(
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size,
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olm_group_decrypt_max_plaintext_length(
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inbound_session, msgcopy.data(), msglen
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)
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);
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memcpy(msgcopy.data(), message, msglen);
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res = olm_group_decrypt(
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inbound_session, msgcopy.data(), msglen,
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plaintext_buf.data(), size, &message_index
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);
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CHECK_EQ((size_t)-1, res);
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CHECK_EQ(
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std::string("BAD_SIGNATURE"),
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std::string(olm_inbound_group_session_last_error(inbound_session))
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);
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}
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