Put tests back

tests/unit/s2n_3des_test.c

@@ -0,0 +1,115 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file 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 <stdio.h>
+#include <string.h>
+
+#include "api/s2n.h"
+#include "crypto/s2n_cipher.h"
+#include "crypto/s2n_hmac.h"
+#include "s2n_test.h"
+#include "stuffer/s2n_stuffer.h"
+#include "testlib/s2n_testlib.h"
+#include "tls/s2n_cipher_suites.h"
+#include "tls/s2n_prf.h"
+#include "tls/s2n_record.h"
+#include "utils/s2n_random.h"
+
+int main(int argc, char **argv)
+{
+    struct s2n_connection *conn;
+    uint8_t mac_key[] = "sample mac key";
+    uint8_t des3_key[] = "12345678901234567890123";
+    struct s2n_blob des3 = { 0 };
+    EXPECT_SUCCESS(s2n_blob_init(&des3, des3_key, sizeof(des3_key)));
+    uint8_t random_data[S2N_DEFAULT_FRAGMENT_LENGTH + 1];
+    struct s2n_blob r = { 0 };
+    EXPECT_SUCCESS(s2n_blob_init(&r, random_data, sizeof(random_data)));
+
+    BEGIN_TEST();
+    EXPECT_SUCCESS(s2n_disable_tls13_in_test());
+
+    EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
+    EXPECT_OK(s2n_get_public_random_data(&r));
+
+    /* Peer and we are in sync */
+    conn->server = conn->secure;
+    conn->client = conn->secure;
+
+    /* test the 3des cipher with a SHA1 hash */
+    conn->secure->cipher_suite->record_alg = &s2n_record_alg_3des_sha;
+    EXPECT_SUCCESS(conn->secure->cipher_suite->record_alg->cipher->init(&conn->secure->server_key));
+    EXPECT_SUCCESS(conn->secure->cipher_suite->record_alg->cipher->init(&conn->secure->client_key));
+    EXPECT_SUCCESS(conn->secure->cipher_suite->record_alg->cipher->set_encryption_key(&conn->secure->server_key, &des3));
+    EXPECT_SUCCESS(conn->secure->cipher_suite->record_alg->cipher->set_decryption_key(&conn->secure->client_key, &des3));
+    EXPECT_SUCCESS(s2n_hmac_init(&conn->secure->client_record_mac, S2N_HMAC_SHA1, mac_key, sizeof(mac_key)));
+    EXPECT_SUCCESS(s2n_hmac_init(&conn->secure->server_record_mac, S2N_HMAC_SHA1, mac_key, sizeof(mac_key)));
+    conn->actual_protocol_version = S2N_TLS11;
+
+    for (int i = 0; i <= S2N_DEFAULT_FRAGMENT_LENGTH + 1; i++) {
+        struct s2n_blob in = { 0 };
+        EXPECT_SUCCESS(s2n_blob_init(&in, random_data, i));
+        int bytes_written;
+
+        EXPECT_SUCCESS(s2n_stuffer_wipe(&conn->out));
+
+        s2n_result result = s2n_record_write(conn, TLS_APPLICATION_DATA, &in);
+        if (i <= S2N_DEFAULT_FRAGMENT_LENGTH) {
+            EXPECT_OK(result);
+            bytes_written = i;
+        } else {
+            EXPECT_ERROR_WITH_ERRNO(result, S2N_ERR_FRAGMENT_LENGTH_TOO_LARGE);
+            bytes_written = S2N_DEFAULT_FRAGMENT_LENGTH;
+        }
+
+        uint16_t predicted_length = bytes_written + 1 + 20 + 8;
+        if (predicted_length % 8) {
+            predicted_length += (8 - (predicted_length % 8));
+        }
+        EXPECT_EQUAL(conn->out.blob.data[0], TLS_APPLICATION_DATA);
+        EXPECT_EQUAL(conn->out.blob.data[1], 3);
+        EXPECT_EQUAL(conn->out.blob.data[2], 2);
+        EXPECT_EQUAL(conn->out.blob.data[3], (predicted_length >> 8) & 0xff);
+        EXPECT_EQUAL(conn->out.blob.data[4], predicted_length & 0xff);
+
+        /* The data should be encrypted */
+        if (bytes_written > 10) {
+            EXPECT_NOT_EQUAL(memcmp(conn->out.blob.data + 5, random_data, bytes_written), 0);
+        }
+
+        /* Copy the encrypted out data to the in data */
+        EXPECT_SUCCESS(s2n_stuffer_wipe(&conn->in));
+        EXPECT_SUCCESS(s2n_stuffer_wipe(&conn->header_in));
+        EXPECT_SUCCESS(s2n_stuffer_copy(&conn->out, &conn->header_in, 5));
+        EXPECT_SUCCESS(s2n_stuffer_copy(&conn->out, &conn->in, s2n_stuffer_data_available(&conn->out)));
+
+        /* Let's decrypt it */
+        uint8_t content_type;
+        uint16_t fragment_length;
+        EXPECT_SUCCESS(s2n_record_header_parse(conn, &content_type, &fragment_length));
+        EXPECT_SUCCESS(s2n_record_parse(conn));
+        EXPECT_EQUAL(content_type, TLS_APPLICATION_DATA);
+        EXPECT_EQUAL(fragment_length, predicted_length);
+
+        EXPECT_SUCCESS(s2n_stuffer_wipe(&conn->header_in));
+        EXPECT_SUCCESS(s2n_stuffer_wipe(&conn->in));
+    }
+
+    EXPECT_SUCCESS(conn->secure->cipher_suite->record_alg->cipher->destroy_key(&conn->secure->server_key));
+    EXPECT_SUCCESS(conn->secure->cipher_suite->record_alg->cipher->destroy_key(&conn->secure->client_key));
+    EXPECT_SUCCESS(s2n_connection_free(conn));
+
+    END_TEST();
+}