c616438b0051c7f380dd0b315dab17605713a8a0
[openssl.git] / test / aesgcmtest.c
1 /*
2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9
10 #include <openssl/evp.h>
11 #include "testutil.h"
12
13 static const unsigned char gcm_key[] = {
14     0xee, 0xbc, 0x1f, 0x57, 0x48, 0x7f, 0x51, 0x92, 0x1c, 0x04, 0x65, 0x66,
15     0x5f, 0x8a, 0xe6, 0xd1, 0x65, 0x8b, 0xb2, 0x6d, 0xe6, 0xf8, 0xa0, 0x69,
16     0xa3, 0x52, 0x02, 0x93, 0xa5, 0x72, 0x07, 0x8f
17 };
18 static const unsigned char gcm_iv[] = {
19     0x99, 0xaa, 0x3e, 0x68, 0xed, 0x81, 0x73, 0xa0, 0xee, 0xd0, 0x66, 0x84
20 };
21 static const unsigned char gcm_pt[] = {
22     0xf5, 0x6e, 0x87, 0x05, 0x5b, 0xc3, 0x2d, 0x0e, 0xeb, 0x31, 0xb2, 0xea,
23     0xcc, 0x2b, 0xf2, 0xa5
24 };
25 static const unsigned char gcm_aad[] = {
26     0x4d, 0x23, 0xc3, 0xce, 0xc3, 0x34, 0xb4, 0x9b, 0xdb, 0x37, 0x0c, 0x43,
27     0x7f, 0xec, 0x78, 0xde
28 };
29 static const unsigned char gcm_ct[] = {
30     0xf7, 0x26, 0x44, 0x13, 0xa8, 0x4c, 0x0e, 0x7c, 0xd5, 0x36, 0x86, 0x7e,
31     0xb9, 0xf2, 0x17, 0x36
32 };
33 static const unsigned char gcm_tag[] = {
34     0x67, 0xba, 0x05, 0x10, 0x26, 0x2a, 0xe4, 0x87, 0xd7, 0x37, 0xee, 0x62,
35     0x98, 0xf7, 0x7e, 0x0c
36 };
37
38 static int do_encrypt(unsigned char *iv_gen, unsigned char *ct, int *ct_len,
39                       unsigned char *tag, int *tag_len)
40 {
41     int ret = 0;
42     EVP_CIPHER_CTX *ctx = NULL;
43     int outlen;
44     unsigned char outbuf[64];
45
46     *tag_len = 16;
47     ret = TEST_ptr(ctx = EVP_CIPHER_CTX_new())
48           && TEST_true(EVP_EncryptInit_ex(ctx, EVP_aes_256_gcm(), NULL, NULL,
49                                           NULL) > 0)
50           && TEST_true(EVP_EncryptInit_ex(ctx, NULL, NULL, gcm_key,
51                                           iv_gen != NULL ? NULL : gcm_iv) > 0)
52           && TEST_true(EVP_EncryptUpdate(ctx, NULL, &outlen, gcm_aad,
53                                          sizeof(gcm_aad)) > 0)
54           && TEST_true(EVP_EncryptUpdate(ctx, ct, ct_len, gcm_pt,
55                                          sizeof(gcm_pt)) > 0)
56           && TEST_true(EVP_EncryptFinal_ex(ctx, outbuf, &outlen) > 0)
57           && TEST_true(EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16,
58                                            tag) > 0)
59           && TEST_true(iv_gen == NULL
60                   || EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_IV, 12, iv_gen) > 0);
61     EVP_CIPHER_CTX_free(ctx);
62     return ret;
63 }
64
65 static int do_decrypt(const unsigned char *iv, const unsigned char *ct,
66                       int ct_len, const unsigned char *tag, int tag_len)
67 {
68     int ret = 0;
69     EVP_CIPHER_CTX *ctx = NULL;
70     int outlen, ptlen;
71     unsigned char pt[32];
72     unsigned char outbuf[32];
73
74     ret = TEST_ptr(ctx = EVP_CIPHER_CTX_new())
75               && TEST_true(EVP_DecryptInit_ex(ctx, EVP_aes_256_gcm(), NULL,
76                                               NULL, NULL) > 0)
77               && TEST_true(EVP_DecryptInit_ex(ctx, NULL, NULL, gcm_key, iv) > 0)
78               && TEST_true(EVP_DecryptUpdate(ctx, NULL, &outlen, gcm_aad,
79                                              sizeof(gcm_aad)) > 0)
80               && TEST_true(EVP_DecryptUpdate(ctx, pt, &ptlen, ct,
81                                              ct_len) > 0)
82               && TEST_true(EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG,
83                                                tag_len, (void *)tag) > 0)
84               && TEST_true(EVP_DecryptFinal_ex(ctx, outbuf, &outlen) > 0)
85               && TEST_mem_eq(gcm_pt, sizeof(gcm_pt), pt, ptlen);
86
87     EVP_CIPHER_CTX_free(ctx);
88     return ret;
89 }
90
91 static int kat_test(void)
92 {
93     unsigned char tag[32];
94     unsigned char ct[32];
95     int ctlen = 0, taglen = 0;
96
97     return do_encrypt(NULL, ct, &ctlen, tag, &taglen)
98            && TEST_mem_eq(gcm_ct, sizeof(gcm_ct), ct, ctlen)
99            && TEST_mem_eq(gcm_tag, sizeof(gcm_tag), tag, taglen)
100            && do_decrypt(gcm_iv, ct, ctlen, tag, taglen);
101 }
102
103 #ifdef FIPS_MODE
104 static int ivgen_test(void)
105 {
106     unsigned char iv_gen[16];
107     unsigned char tag[32];
108     unsigned char ct[32];
109     int ctlen = 0, taglen = 0;
110
111     return do_encrypt(iv_gen, ct, &ctlen, tag, &taglen)
112            && do_decrypt(iv_gen, ct, ctlen, tag, taglen);
113 }
114 #endif /* FIPS_MODE */
115
116 int setup_tests(void)
117 {
118     ADD_TEST(kat_test);
119 #ifdef FIPS_MODE
120     ADD_TEST(ivgen_test);
121 #endif /* FIPS_MODE */
122     return 1;
123 }