Manuel Pégourié-Gonnard | a6916fa | 2014-05-02 15:17:29 +0200 | [diff] [blame] | 1 | /* BEGIN_HEADER */ |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 2 | #include "mbedtls/ccm.h" |
Manuel Pégourié-Gonnard | a6916fa | 2014-05-02 15:17:29 +0200 | [diff] [blame] | 3 | /* END_HEADER */ |
| 4 | |
| 5 | /* BEGIN_DEPENDENCIES |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 6 | * depends_on:MBEDTLS_CCM_C |
Manuel Pégourié-Gonnard | a6916fa | 2014-05-02 15:17:29 +0200 | [diff] [blame] | 7 | * END_DEPENDENCIES |
| 8 | */ |
| 9 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 10 | /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST:MBEDTLS_AES_C */ |
Azim Khan | f1aaec9 | 2017-05-30 14:23:15 +0100 | [diff] [blame] | 11 | void mbedtls_ccm_self_test( ) |
Manuel Pégourié-Gonnard | a6916fa | 2014-05-02 15:17:29 +0200 | [diff] [blame] | 12 | { |
Andres AG | 93012e8 | 2016-09-09 09:10:28 +0100 | [diff] [blame] | 13 | TEST_ASSERT( mbedtls_ccm_self_test( 1 ) == 0 ); |
Manuel Pégourié-Gonnard | a6916fa | 2014-05-02 15:17:29 +0200 | [diff] [blame] | 14 | } |
| 15 | /* END_CASE */ |
Manuel Pégourié-Gonnard | 9fe0d13 | 2014-05-06 12:12:45 +0200 | [diff] [blame] | 16 | |
| 17 | /* BEGIN_CASE */ |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 18 | void mbedtls_ccm_setkey( int cipher_id, int key_size, int result ) |
Manuel Pégourié-Gonnard | 9fe0d13 | 2014-05-06 12:12:45 +0200 | [diff] [blame] | 19 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 20 | mbedtls_ccm_context ctx; |
Manuel Pégourié-Gonnard | 9fe0d13 | 2014-05-06 12:12:45 +0200 | [diff] [blame] | 21 | unsigned char key[32]; |
| 22 | int ret; |
| 23 | |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 24 | mbedtls_ccm_init( &ctx ); |
| 25 | |
Manuel Pégourié-Gonnard | 9fe0d13 | 2014-05-06 12:12:45 +0200 | [diff] [blame] | 26 | memset( key, 0x2A, sizeof( key ) ); |
| 27 | TEST_ASSERT( (unsigned) key_size <= 8 * sizeof( key ) ); |
| 28 | |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 29 | ret = mbedtls_ccm_setkey( &ctx, cipher_id, key, key_size ); |
Manuel Pégourié-Gonnard | 9fe0d13 | 2014-05-06 12:12:45 +0200 | [diff] [blame] | 30 | TEST_ASSERT( ret == result ); |
| 31 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 32 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 33 | mbedtls_ccm_free( &ctx ); |
Manuel Pégourié-Gonnard | 9fe0d13 | 2014-05-06 12:12:45 +0200 | [diff] [blame] | 34 | } |
| 35 | /* END_CASE */ |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 36 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 37 | /* BEGIN_CASE depends_on:MBEDTLS_AES_C */ |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 38 | void ccm_lengths( int msg_len, int iv_len, int add_len, int tag_len, int res ) |
| 39 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 40 | mbedtls_ccm_context ctx; |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 41 | unsigned char key[16]; |
| 42 | unsigned char msg[10]; |
| 43 | unsigned char iv[14]; |
Dave Rodgman | 2e68034 | 2020-10-15 14:00:40 +0100 | [diff] [blame] | 44 | unsigned char *add = NULL; |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 45 | unsigned char out[10]; |
| 46 | unsigned char tag[18]; |
| 47 | int decrypt_ret; |
| 48 | |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 49 | mbedtls_ccm_init( &ctx ); |
| 50 | |
Dave Rodgman | 2e68034 | 2020-10-15 14:00:40 +0100 | [diff] [blame] | 51 | ASSERT_ALLOC_WEAK( add, add_len ); |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 52 | memset( key, 0, sizeof( key ) ); |
| 53 | memset( msg, 0, sizeof( msg ) ); |
| 54 | memset( iv, 0, sizeof( iv ) ); |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 55 | memset( out, 0, sizeof( out ) ); |
| 56 | memset( tag, 0, sizeof( tag ) ); |
| 57 | |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 58 | TEST_ASSERT( mbedtls_ccm_setkey( &ctx, MBEDTLS_CIPHER_ID_AES, |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 59 | key, 8 * sizeof( key ) ) == 0 ); |
| 60 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 61 | TEST_ASSERT( mbedtls_ccm_encrypt_and_tag( &ctx, msg_len, iv, iv_len, add, add_len, |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 62 | msg, out, tag, tag_len ) == res ); |
| 63 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 64 | decrypt_ret = mbedtls_ccm_auth_decrypt( &ctx, msg_len, iv, iv_len, add, add_len, |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 65 | msg, out, tag, tag_len ); |
| 66 | |
| 67 | if( res == 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 68 | TEST_ASSERT( decrypt_ret == MBEDTLS_ERR_CCM_AUTH_FAILED ); |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 69 | else |
| 70 | TEST_ASSERT( decrypt_ret == res ); |
| 71 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 72 | exit: |
Dave Rodgman | 2e68034 | 2020-10-15 14:00:40 +0100 | [diff] [blame] | 73 | mbedtls_free( add ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 74 | mbedtls_ccm_free( &ctx ); |
Manuel Pégourié-Gonnard | 87df5ba | 2014-05-06 18:07:24 +0200 | [diff] [blame] | 75 | } |
| 76 | /* END_CASE */ |
| 77 | |
Janos Follath | 95ab93d | 2018-05-14 14:32:41 +0100 | [diff] [blame] | 78 | /* BEGIN_CASE depends_on:MBEDTLS_AES_C */ |
| 79 | void ccm_star_lengths( int msg_len, int iv_len, int add_len, int tag_len, |
| 80 | int res ) |
| 81 | { |
| 82 | mbedtls_ccm_context ctx; |
| 83 | unsigned char key[16]; |
| 84 | unsigned char msg[10]; |
| 85 | unsigned char iv[14]; |
| 86 | unsigned char add[10]; |
| 87 | unsigned char out[10]; |
| 88 | unsigned char tag[18]; |
| 89 | int decrypt_ret; |
| 90 | |
| 91 | mbedtls_ccm_init( &ctx ); |
| 92 | |
| 93 | memset( key, 0, sizeof( key ) ); |
| 94 | memset( msg, 0, sizeof( msg ) ); |
| 95 | memset( iv, 0, sizeof( iv ) ); |
| 96 | memset( add, 0, sizeof( add ) ); |
| 97 | memset( out, 0, sizeof( out ) ); |
| 98 | memset( tag, 0, sizeof( tag ) ); |
| 99 | |
| 100 | TEST_ASSERT( mbedtls_ccm_setkey( &ctx, MBEDTLS_CIPHER_ID_AES, |
| 101 | key, 8 * sizeof( key ) ) == 0 ); |
| 102 | |
| 103 | TEST_ASSERT( mbedtls_ccm_star_encrypt_and_tag( &ctx, msg_len, iv, iv_len, |
| 104 | add, add_len, msg, out, tag, tag_len ) == res ); |
| 105 | |
| 106 | decrypt_ret = mbedtls_ccm_star_auth_decrypt( &ctx, msg_len, iv, iv_len, add, |
| 107 | add_len, msg, out, tag, tag_len ); |
| 108 | |
| 109 | if( res == 0 && tag_len != 0 ) |
| 110 | TEST_ASSERT( decrypt_ret == MBEDTLS_ERR_CCM_AUTH_FAILED ); |
| 111 | else |
| 112 | TEST_ASSERT( decrypt_ret == res ); |
| 113 | |
| 114 | exit: |
| 115 | mbedtls_ccm_free( &ctx ); |
| 116 | } |
| 117 | /* END_CASE */ |
| 118 | |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 119 | /* BEGIN_CASE */ |
Azim Khan | 5fcca46 | 2018-06-29 11:05:32 +0100 | [diff] [blame] | 120 | void mbedtls_ccm_encrypt_and_tag( int cipher_id, data_t * key, |
| 121 | data_t * msg, data_t * iv, |
| 122 | data_t * add, data_t * result ) |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 123 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 124 | mbedtls_ccm_context ctx; |
Azim Khan | f1aaec9 | 2017-05-30 14:23:15 +0100 | [diff] [blame] | 125 | size_t tag_len; |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 126 | uint8_t * msg_n_tag = (uint8_t *)malloc( result->len + 2 ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 127 | |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 128 | mbedtls_ccm_init( &ctx ); |
| 129 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 130 | memset( msg_n_tag, 0, result->len + 2 ); |
| 131 | memcpy( msg_n_tag, msg->x, msg->len ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 132 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 133 | tag_len = result->len - msg->len; |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 134 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 135 | TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 136 | |
Manuel Pégourié-Gonnard | 0f6b66d | 2014-05-07 14:43:46 +0200 | [diff] [blame] | 137 | /* Test with input == output */ |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 138 | TEST_ASSERT( mbedtls_ccm_encrypt_and_tag( &ctx, msg->len, iv->x, iv->len, add->x, add->len, |
| 139 | msg_n_tag, msg_n_tag, msg_n_tag + msg->len, tag_len ) == 0 ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 140 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 141 | TEST_ASSERT( memcmp( msg_n_tag, result->x, result->len ) == 0 ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 142 | |
| 143 | /* Check we didn't write past the end */ |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 144 | TEST_ASSERT( msg_n_tag[result->len] == 0 && msg_n_tag[result->len + 1] == 0 ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 145 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 146 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 147 | mbedtls_ccm_free( &ctx ); |
Azim Khan | 46c9b1f | 2017-05-31 20:46:35 +0100 | [diff] [blame] | 148 | free( msg_n_tag ); |
Manuel Pégourié-Gonnard | 637eb3d | 2014-05-06 12:13:09 +0200 | [diff] [blame] | 149 | } |
| 150 | /* END_CASE */ |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 151 | |
| 152 | /* BEGIN_CASE */ |
Azim Khan | 5fcca46 | 2018-06-29 11:05:32 +0100 | [diff] [blame] | 153 | void mbedtls_ccm_auth_decrypt( int cipher_id, data_t * key, |
| 154 | data_t * msg, data_t * iv, |
| 155 | data_t * add, int tag_len, int result, |
Ronald Cron | ac6ae35 | 2020-06-26 14:33:03 +0200 | [diff] [blame] | 156 | data_t * expected_msg ) |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 157 | { |
Manuel Pégourié-Gonnard | 0f6b66d | 2014-05-07 14:43:46 +0200 | [diff] [blame] | 158 | unsigned char tag[16]; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 159 | mbedtls_ccm_context ctx; |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 160 | |
Manuel Pégourié-Gonnard | 6963ff0 | 2015-04-28 18:02:54 +0200 | [diff] [blame] | 161 | mbedtls_ccm_init( &ctx ); |
| 162 | |
Manuel Pégourié-Gonnard | 0f6b66d | 2014-05-07 14:43:46 +0200 | [diff] [blame] | 163 | memset( tag, 0x00, sizeof( tag ) ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 164 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 165 | msg->len -= tag_len; |
| 166 | memcpy( tag, msg->x + msg->len, tag_len ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 167 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 168 | TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 169 | |
Manuel Pégourié-Gonnard | 0f6b66d | 2014-05-07 14:43:46 +0200 | [diff] [blame] | 170 | /* Test with input == output */ |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 171 | TEST_ASSERT( mbedtls_ccm_auth_decrypt( &ctx, msg->len, iv->x, iv->len, add->x, add->len, |
Mohammad Azim Khan | cfd8342 | 2018-06-26 18:15:18 +0100 | [diff] [blame] | 172 | msg->x, msg->x, msg->x + msg->len, tag_len ) == result ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 173 | |
Mohammad Azim Khan | cfd8342 | 2018-06-26 18:15:18 +0100 | [diff] [blame] | 174 | if( result == 0 ) |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 175 | { |
Ronald Cron | ac6ae35 | 2020-06-26 14:33:03 +0200 | [diff] [blame] | 176 | TEST_ASSERT( memcmp( msg->x, expected_msg->x, expected_msg->len ) == 0 ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 177 | } |
| 178 | else |
| 179 | { |
| 180 | size_t i; |
| 181 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 182 | for( i = 0; i < msg->len; i++ ) |
| 183 | TEST_ASSERT( msg->x[i] == 0 ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 184 | } |
| 185 | |
Manuel Pégourié-Gonnard | 0f6b66d | 2014-05-07 14:43:46 +0200 | [diff] [blame] | 186 | /* Check we didn't write past the end (where the original tag is) */ |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame] | 187 | TEST_ASSERT( memcmp( msg->x + msg->len, tag, tag_len ) == 0 ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 188 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 189 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 190 | mbedtls_ccm_free( &ctx ); |
Manuel Pégourié-Gonnard | ce77d55 | 2014-05-06 18:06:52 +0200 | [diff] [blame] | 191 | } |
| 192 | /* END_CASE */ |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 193 | |
| 194 | /* BEGIN_CASE */ |
| 195 | void mbedtls_ccm_star_encrypt_and_tag( int cipher_id, |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 196 | data_t *key, data_t *msg, |
| 197 | data_t *source_address, data_t *frame_counter, |
| 198 | int sec_level, data_t *add, |
| 199 | data_t *expected_result, int output_ret ) |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 200 | { |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 201 | unsigned char iv[13]; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 202 | unsigned char result[50]; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 203 | mbedtls_ccm_context ctx; |
Gilles Peskine | b168c0d | 2021-02-09 12:00:13 +0100 | [diff] [blame] | 204 | size_t iv_len, tag_len; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 205 | int ret; |
| 206 | |
| 207 | mbedtls_ccm_init( &ctx ); |
| 208 | |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 209 | memset( result, 0x00, sizeof( result ) ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 210 | |
| 211 | if( sec_level % 4 == 0) |
| 212 | tag_len = 0; |
| 213 | else |
| 214 | tag_len = 1 << ( sec_level % 4 + 1); |
| 215 | |
Gilles Peskine | b168c0d | 2021-02-09 12:00:13 +0100 | [diff] [blame] | 216 | TEST_ASSERT( source_address->len == 8 ); |
| 217 | TEST_ASSERT( frame_counter->len == 4 ); |
| 218 | memcpy( iv, source_address->x, source_address->len ); |
| 219 | memcpy( iv + source_address->len, frame_counter->x, frame_counter->len ); |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 220 | iv[source_address->len + frame_counter->len] = sec_level; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 221 | iv_len = sizeof( iv ); |
| 222 | |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 223 | TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, |
| 224 | key->x, key->len * 8 ) == 0 ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 225 | |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 226 | ret = mbedtls_ccm_star_encrypt_and_tag( &ctx, msg->len, iv, iv_len, |
| 227 | add->x, add->len, msg->x, |
| 228 | result, result + msg->len, tag_len ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 229 | |
| 230 | TEST_ASSERT( ret == output_ret ); |
| 231 | |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 232 | TEST_ASSERT( memcmp( result, |
| 233 | expected_result->x, expected_result->len ) == 0 ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 234 | |
| 235 | /* Check we didn't write past the end */ |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 236 | TEST_ASSERT( result[expected_result->len] == 0 && |
| 237 | result[expected_result->len + 1] == 0 ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 238 | |
| 239 | exit: |
| 240 | mbedtls_ccm_free( &ctx ); |
| 241 | } |
| 242 | /* END_CASE */ |
| 243 | |
| 244 | /* BEGIN_CASE */ |
| 245 | void mbedtls_ccm_star_auth_decrypt( int cipher_id, |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 246 | data_t *key, data_t *msg, |
| 247 | data_t *source_address, data_t *frame_counter, |
| 248 | int sec_level, data_t *add, |
| 249 | data_t *expected_result, int output_ret ) |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 250 | { |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 251 | unsigned char iv[13]; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 252 | unsigned char result[50]; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 253 | mbedtls_ccm_context ctx; |
Gilles Peskine | b168c0d | 2021-02-09 12:00:13 +0100 | [diff] [blame] | 254 | size_t iv_len, tag_len; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 255 | int ret; |
| 256 | |
| 257 | mbedtls_ccm_init( &ctx ); |
| 258 | |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 259 | memset( iv, 0x00, sizeof( iv ) ); |
Ronald Cron | c7ba560 | 2020-06-25 14:47:40 +0200 | [diff] [blame] | 260 | memset( result, '+', sizeof( result ) ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 261 | |
| 262 | if( sec_level % 4 == 0) |
| 263 | tag_len = 0; |
| 264 | else |
| 265 | tag_len = 1 << ( sec_level % 4 + 1); |
| 266 | |
Gilles Peskine | b168c0d | 2021-02-09 12:00:13 +0100 | [diff] [blame] | 267 | TEST_ASSERT( source_address->len == 8 ); |
| 268 | TEST_ASSERT( frame_counter->len == 4 ); |
| 269 | memcpy( iv, source_address->x, source_address->len ); |
| 270 | memcpy( iv + source_address->len, frame_counter->x, frame_counter->len ); |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 271 | iv[source_address->len + frame_counter->len] = sec_level; |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 272 | iv_len = sizeof( iv ); |
| 273 | |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 274 | TEST_ASSERT( mbedtls_ccm_setkey( &ctx, cipher_id, key->x, key->len * 8 ) == 0 ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 275 | |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 276 | ret = mbedtls_ccm_star_auth_decrypt( &ctx, msg->len - tag_len, iv, iv_len, |
| 277 | add->x, add->len, msg->x, result, |
| 278 | msg->x + msg->len - tag_len, tag_len ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 279 | |
| 280 | TEST_ASSERT( ret == output_ret ); |
| 281 | |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 282 | TEST_ASSERT( memcmp( result, expected_result->x, |
| 283 | expected_result->len ) == 0 ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 284 | |
| 285 | /* Check we didn't write past the end (where the original tag is) */ |
Ronald Cron | 9ed4073 | 2020-06-25 09:03:34 +0200 | [diff] [blame] | 286 | TEST_ASSERT( ( msg->len + 2 ) <= sizeof( result ) ); |
| 287 | TEST_EQUAL( result[msg->len], '+' ); |
| 288 | TEST_EQUAL( result[msg->len + 1], '+' ); |
Darryl Green | 0daf4ca | 2018-05-29 14:12:26 +0100 | [diff] [blame] | 289 | |
| 290 | exit: |
| 291 | mbedtls_ccm_free( &ctx ); |
| 292 | } |
| 293 | /* END_CASE */ |