1 files changed, 174 insertions, 0 deletions
diff --git a/tests/test_axolotl.cpp b/tests/test_axolotl.cpp
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+/* Copyright 2015 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 "axolotl/axolotl.hh"
+#include "unittest.hh"
+
+
+int main() {
+
+std::uint8_t root_info[] = "Axolotl";
+std::uint8_t ratchet_info[] = "AxolotlRatchet";
+std::uint8_t message_info[] = "AxolotlMessageKeys";
+
+axolotl::KdfInfo kdf_info = {
+    root_info, sizeof(root_info) - 1,
+    ratchet_info, sizeof(ratchet_info - 1),
+    message_info, sizeof(ratchet_info - 1)
+};
+
+std::uint8_t random_bytes[] = "0123456789ABDEF0123456789ABCDEF";
+axolotl::Curve25519KeyPair bob_key;
+axolotl::generate_key(random_bytes, bob_key);
+
+std::uint8_t shared_secret[] = "A secret";
+
+{ /* Send/Receive test case */
+TestCase test_case("Axolotl Send/Receive");
+
+axolotl::Session alice(kdf_info);
+axolotl::Session bob(kdf_info);
+
+alice.initialise_as_bob(shared_secret, sizeof(shared_secret) - 1, bob_key);
+bob.initialise_as_alice(shared_secret, sizeof(shared_secret) - 1, bob_key);
+
+std::uint8_t plaintext[] = "Message";
+std::size_t plaintext_length = sizeof(plaintext) - 1;
+
+std::size_t message_length, random_length, output_length;
+std::size_t encrypt_length, decrypt_length;
+{
+    /* Bob sends Alice a message */
+    message_length = bob.encrypt_max_output_length(plaintext_length);
+    random_length = bob.encrypt_random_length();
+    assert_equals(std::size_t(0), random_length);
+    output_length = alice.decrypt_max_plaintext_length(message_length);
+
+    std::uint8_t message[message_length];
+    std::uint8_t output[output_length];
+
+    encrypt_length = bob.encrypt(
+        plaintext, plaintext_length,
+        NULL, 0,
+        message, message_length
+    );
+    assert_equals(message_length, encrypt_length);
+
+    decrypt_length = alice.decrypt(
+        message, message_length,
+        output, output_length
+    );
+    assert_equals(plaintext_length, decrypt_length);
+    assert_equals(plaintext, output, decrypt_length);
+}
+
+
+{
+    /* Alice sends Bob a message */
+    message_length = alice.encrypt_max_output_length(plaintext_length);
+    random_length = alice.encrypt_random_length();
+    assert_equals(std::size_t(32), random_length);
+    output_length = bob.decrypt_max_plaintext_length(message_length);
+
+    std::uint8_t message[message_length];
+    std::uint8_t output[output_length];
+    std::uint8_t random[] = "This is a random 32 byte string.";
+
+    encrypt_length = alice.encrypt(
+        plaintext, plaintext_length,
+        random, 32,
+        message, message_length
+    );
+    assert_equals(message_length, encrypt_length);
+
+    decrypt_length = bob.decrypt(
+        message, message_length,
+        output, output_length
+    );
+    assert_equals(plaintext_length, decrypt_length);
+    assert_equals(plaintext, output, decrypt_length);
+}
+
+} /* Send/receive message test case */
+
+{ /* Out of order test case */
+
+TestCase test_case("Axolotl Out of Order");
+
+axolotl::Session alice(kdf_info);
+axolotl::Session bob(kdf_info);
+
+alice.initialise_as_bob(shared_secret, sizeof(shared_secret) - 1, bob_key);
+bob.initialise_as_alice(shared_secret, sizeof(shared_secret) - 1, bob_key);
+
+std::uint8_t plaintext_1[] = "First Message";
+std::size_t plaintext_1_length = sizeof(plaintext_1) - 1;
+
+std::uint8_t plaintext_2[] = "Second Messsage. A bit longer than the first.";
+std::size_t plaintext_2_length = sizeof(plaintext_2) - 1;
+
+std::size_t message_1_length, message_2_length, random_length, output_length;
+std::size_t encrypt_length, decrypt_length;
+
+{
+    /* Alice sends Bob two messages and they arrive out of order */
+    message_1_length = alice.encrypt_max_output_length(plaintext_1_length);
+    random_length = alice.encrypt_random_length();
+    assert_equals(std::size_t(32), random_length);
+
+    std::uint8_t message_1[message_1_length];
+    std::uint8_t random[] = "This is a random 32 byte string.";
+    encrypt_length = alice.encrypt(
+        plaintext_1, plaintext_1_length,
+        random, 32,
+        message_1, message_1_length
+    );
+    assert_equals(message_1_length, encrypt_length);
+
+    message_2_length = alice.encrypt_max_output_length(plaintext_2_length);
+    random_length = alice.encrypt_random_length();
+    assert_equals(std::size_t(0), random_length);
+
+    std::uint8_t message_2[message_2_length];
+    encrypt_length = alice.encrypt(
+        plaintext_2, plaintext_2_length,
+        NULL, 0,
+        message_2, message_2_length
+    );
+    assert_equals(message_2_length, encrypt_length);
+
+    output_length = bob.decrypt_max_plaintext_length(message_2_length);
+    std::uint8_t output_1[output_length];
+    decrypt_length = bob.decrypt(
+        message_2, message_2_length,
+        output_1, output_length
+    );
+    assert_equals(plaintext_2_length, decrypt_length);
+    assert_equals(plaintext_2, output_1, decrypt_length);
+
+    output_length = bob.decrypt_max_plaintext_length(message_1_length);
+    std::uint8_t output_2[output_length];
+    decrypt_length = bob.decrypt(
+        message_1, message_1_length,
+        output_2, output_length
+    );
+
+    assert_equals(plaintext_1_length, decrypt_length);
+    assert_equals(plaintext_1, output_2, decrypt_length);
+}
+
+} /* Out of order test case */
+
+
+}