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      1 /* ====================================================================
      2  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in
     13  *    the documentation and/or other materials provided with the
     14  *    distribution.
     15  *
     16  * 3. All advertising materials mentioning features or use of this
     17  *    software must display the following acknowledgment:
     18  *    "This product includes software developed by the OpenSSL Project
     19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
     20  *
     21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     22  *    endorse or promote products derived from this software without
     23  *    prior written permission. For written permission, please contact
     24  *    openssl-core (at) openssl.org.
     25  *
     26  * 5. Products derived from this software may not be called "OpenSSL"
     27  *    nor may "OpenSSL" appear in their names without prior written
     28  *    permission of the OpenSSL Project.
     29  *
     30  * 6. Redistributions of any form whatsoever must retain the following
     31  *    acknowledgment:
     32  *    "This product includes software developed by the OpenSSL Project
     33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
     34  *
     35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
     39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     46  * OF THE POSSIBILITY OF SUCH DAMAGE.
     47  * ==================================================================== */
     48 
     49 // Per C99, various stdint.h and inttypes.h macros (the latter used by
     50 // internal.h) are unavailable in C++ unless some macros are defined. C++11
     51 // overruled this decision, but older Android NDKs still require it.
     52 #if !defined(__STDC_CONSTANT_MACROS)
     53 #define __STDC_CONSTANT_MACROS
     54 #endif
     55 
     56 #include <stdio.h>
     57 #include <string.h>
     58 
     59 #include <vector>
     60 
     61 #include <gtest/gtest.h>
     62 
     63 #include <openssl/aes.h>
     64 
     65 #include "internal.h"
     66 #include "../../test/file_test.h"
     67 #include "../../test/test_util.h"
     68 
     69 
     70 TEST(GCMTest, TestVectors) {
     71   FileTestGTest("crypto/fipsmodule/modes/gcm_tests.txt", [](FileTest *t) {
     72     std::vector<uint8_t> key, plaintext, additional_data, nonce, ciphertext,
     73         tag;
     74     ASSERT_TRUE(t->GetBytes(&key, "Key"));
     75     ASSERT_TRUE(t->GetBytes(&plaintext, "Plaintext"));
     76     ASSERT_TRUE(t->GetBytes(&additional_data, "AdditionalData"));
     77     ASSERT_TRUE(t->GetBytes(&nonce, "Nonce"));
     78     ASSERT_TRUE(t->GetBytes(&ciphertext, "Ciphertext"));
     79     ASSERT_TRUE(t->GetBytes(&tag, "Tag"));
     80 
     81     ASSERT_EQ(plaintext.size(), ciphertext.size());
     82     ASSERT_TRUE(key.size() == 16 || key.size() == 24 || key.size() == 32);
     83     ASSERT_EQ(16u, tag.size());
     84 
     85     std::vector<uint8_t> out(plaintext.size());
     86     AES_KEY aes_key;
     87     ASSERT_EQ(0, AES_set_encrypt_key(key.data(), key.size() * 8, &aes_key));
     88 
     89     GCM128_CONTEXT ctx;
     90     CRYPTO_gcm128_init(&ctx, &aes_key, (block128_f)AES_encrypt, 0);
     91     CRYPTO_gcm128_setiv(&ctx, &aes_key, nonce.data(), nonce.size());
     92     if (!additional_data.empty()) {
     93       CRYPTO_gcm128_aad(&ctx, additional_data.data(), additional_data.size());
     94     }
     95     if (!plaintext.empty()) {
     96       CRYPTO_gcm128_encrypt(&ctx, &aes_key, plaintext.data(), out.data(),
     97                             plaintext.size());
     98     }
     99     ASSERT_TRUE(CRYPTO_gcm128_finish(&ctx, tag.data(), tag.size()));
    100     EXPECT_EQ(Bytes(ciphertext), Bytes(out));
    101 
    102     CRYPTO_gcm128_setiv(&ctx, &aes_key, nonce.data(), nonce.size());
    103     OPENSSL_memset(out.data(), 0, out.size());
    104     if (!additional_data.empty()) {
    105       CRYPTO_gcm128_aad(&ctx, additional_data.data(), additional_data.size());
    106     }
    107     if (!ciphertext.empty()) {
    108       CRYPTO_gcm128_decrypt(&ctx, &aes_key, ciphertext.data(), out.data(),
    109                             ciphertext.size());
    110     }
    111     ASSERT_TRUE(CRYPTO_gcm128_finish(&ctx, tag.data(), tag.size()));
    112     EXPECT_EQ(Bytes(plaintext), Bytes(out));
    113   });
    114 }
    115 
    116 TEST(GCMTest, ByteSwap) {
    117   EXPECT_EQ(0x04030201u, CRYPTO_bswap4(0x01020304u));
    118   EXPECT_EQ(UINT64_C(0x0807060504030201),
    119             CRYPTO_bswap8(UINT64_C(0x0102030405060708)));
    120 }
    121