Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 1 | /* BEGIN_HEADER */ |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 2 | #include "mbedtls/ctr_drbg.h" |
Mohammad Azim Khan | 67735d5 | 2017-04-06 11:55:43 +0100 | [diff] [blame] | 3 | #include "string.h" |
Rich Evans | 00ab470 | 2015-02-06 13:43:58 +0000 | [diff] [blame] | 4 | |
Reut Caspi | e278b36 | 2017-10-19 08:49:19 +0100 | [diff] [blame] | 5 | static int test_offset_idx; |
| 6 | static int mbedtls_test_entropy_func( void *data, unsigned char *buf, size_t len ) |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 7 | { |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 8 | const unsigned char *p = (unsigned char *) data; |
Paul Bakker | 3ddfa66 | 2013-11-26 17:45:20 +0100 | [diff] [blame] | 9 | memcpy( buf, p + test_offset_idx, len ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 10 | test_offset_idx += len; |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 11 | return( 0 ); |
| 12 | } |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 13 | /* END_HEADER */ |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 14 | |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 15 | /* BEGIN_DEPENDENCIES |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 16 | * depends_on:MBEDTLS_CTR_DRBG_C |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 17 | * END_DEPENDENCIES |
| 18 | */ |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 19 | |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 20 | /* BEGIN_CASE */ |
Azim Khan | f1aaec9 | 2017-05-30 14:23:15 +0100 | [diff] [blame] | 21 | void ctr_drbg_special_behaviours( ) |
Paul Bakker | 185ccf7 | 2016-07-14 13:21:10 +0100 | [diff] [blame] | 22 | { |
| 23 | mbedtls_ctr_drbg_context ctx; |
| 24 | unsigned char output[512]; |
| 25 | unsigned char additional[512]; |
| 26 | |
| 27 | mbedtls_ctr_drbg_init( &ctx ); |
| 28 | memset( output, 0, sizeof( output ) ); |
| 29 | memset( additional, 0, sizeof( additional ) ); |
| 30 | |
| 31 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, |
| 32 | output, MBEDTLS_CTR_DRBG_MAX_REQUEST + 1, |
| 33 | additional, 16 ) == |
| 34 | MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG ); |
| 35 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, |
| 36 | output, 16, |
| 37 | additional, MBEDTLS_CTR_DRBG_MAX_INPUT + 1 ) == |
| 38 | MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG ); |
| 39 | |
| 40 | TEST_ASSERT( mbedtls_ctr_drbg_reseed( &ctx, additional, |
| 41 | MBEDTLS_CTR_DRBG_MAX_SEED_INPUT + 1 ) == |
| 42 | MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG ); |
Andres Amaya Garcia | 6a54336 | 2017-01-17 23:04:22 +0000 | [diff] [blame] | 43 | |
| 44 | mbedtls_ctr_drbg_set_entropy_len( &ctx, ~0 ); |
| 45 | TEST_ASSERT( mbedtls_ctr_drbg_reseed( &ctx, additional, |
| 46 | MBEDTLS_CTR_DRBG_MAX_SEED_INPUT ) == |
| 47 | MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG ); |
Paul Bakker | 185ccf7 | 2016-07-14 13:21:10 +0100 | [diff] [blame] | 48 | exit: |
| 49 | mbedtls_ctr_drbg_free( &ctx ); |
| 50 | } |
| 51 | /* END_CASE */ |
| 52 | |
| 53 | /* BEGIN_CASE */ |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame^] | 54 | void ctr_drbg_validate_pr( HexParam_t * add_init, HexParam_t * entropy, |
| 55 | HexParam_t * add1, HexParam_t * add2, |
| 56 | HexParam_t * result_str ) |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 57 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 58 | mbedtls_ctr_drbg_context ctx; |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 59 | unsigned char buf[512]; |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 60 | |
Manuel Pégourié-Gonnard | 8d128ef | 2015-04-28 22:38:08 +0200 | [diff] [blame] | 61 | mbedtls_ctr_drbg_init( &ctx ); |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 62 | |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 63 | |
Paul Bakker | 3ddfa66 | 2013-11-26 17:45:20 +0100 | [diff] [blame] | 64 | test_offset_idx = 0; |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame^] | 65 | TEST_ASSERT( mbedtls_ctr_drbg_seed_entropy_len( &ctx, mbedtls_test_entropy_func, entropy->x, add_init->x, add_init->len, 32 ) == 0 ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 66 | mbedtls_ctr_drbg_set_prediction_resistance( &ctx, MBEDTLS_CTR_DRBG_PR_ON ); |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 67 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame^] | 68 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, buf, 16, add1->x, add1->len ) == 0 ); |
| 69 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, buf, 16, add2->x, add2->len ) == 0 ); |
| 70 | TEST_ASSERT( hexcmp( buf, result_str->x, 16, result_str->len ) == 0 ); |
Paul Bakker | a317a98 | 2014-06-18 16:44:11 +0200 | [diff] [blame] | 71 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 72 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 73 | mbedtls_ctr_drbg_free( &ctx ); |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 74 | } |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 75 | /* END_CASE */ |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 76 | |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 77 | /* BEGIN_CASE */ |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame^] | 78 | void ctr_drbg_validate_nopr( HexParam_t * add_init, HexParam_t * entropy, |
| 79 | HexParam_t * add1, HexParam_t * add_reseed, |
| 80 | HexParam_t * add2, HexParam_t * result_str ) |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 81 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 82 | mbedtls_ctr_drbg_context ctx; |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 83 | unsigned char buf[512]; |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 84 | |
Manuel Pégourié-Gonnard | 8d128ef | 2015-04-28 22:38:08 +0200 | [diff] [blame] | 85 | mbedtls_ctr_drbg_init( &ctx ); |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 86 | |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 87 | |
Paul Bakker | 3ddfa66 | 2013-11-26 17:45:20 +0100 | [diff] [blame] | 88 | test_offset_idx = 0; |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame^] | 89 | TEST_ASSERT( mbedtls_ctr_drbg_seed_entropy_len( &ctx, mbedtls_test_entropy_func, entropy->x, add_init->x, add_init->len, 32 ) == 0 ); |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 90 | |
Azim Khan | d30ca13 | 2017-06-09 04:32:58 +0100 | [diff] [blame^] | 91 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, buf, 16, add1->x, add1->len ) == 0 ); |
| 92 | TEST_ASSERT( mbedtls_ctr_drbg_reseed( &ctx, add_reseed->x, add_reseed->len ) == 0 ); |
| 93 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, buf, 16, add2->x, add2->len ) == 0 ); |
| 94 | TEST_ASSERT( hexcmp( buf, result_str->x, 16, result_str->len ) == 0 ); |
Paul Bakker | a317a98 | 2014-06-18 16:44:11 +0200 | [diff] [blame] | 95 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 96 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 97 | mbedtls_ctr_drbg_free( &ctx ); |
Paul Bakker | 0e04d0e | 2011-11-27 14:46:59 +0000 | [diff] [blame] | 98 | } |
Paul Bakker | 33b43f1 | 2013-08-20 11:48:36 +0200 | [diff] [blame] | 99 | /* END_CASE */ |
Manuel Pégourié-Gonnard | b3b205e | 2014-01-31 12:04:06 +0100 | [diff] [blame] | 100 | |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 101 | /* BEGIN_CASE */ |
Azim Khan | f1aaec9 | 2017-05-30 14:23:15 +0100 | [diff] [blame] | 102 | void ctr_drbg_entropy_usage( ) |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 103 | { |
| 104 | unsigned char out[16]; |
| 105 | unsigned char add[16]; |
| 106 | unsigned char entropy[1024]; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 107 | mbedtls_ctr_drbg_context ctx; |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 108 | size_t i, reps = 10; |
| 109 | int last_idx; |
| 110 | |
Manuel Pégourié-Gonnard | 8d128ef | 2015-04-28 22:38:08 +0200 | [diff] [blame] | 111 | mbedtls_ctr_drbg_init( &ctx ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 112 | test_offset_idx = 0; |
| 113 | memset( entropy, 0, sizeof( entropy ) ); |
| 114 | memset( out, 0, sizeof( out ) ); |
| 115 | memset( add, 0, sizeof( add ) ); |
| 116 | |
| 117 | /* Init must use entropy */ |
| 118 | last_idx = test_offset_idx; |
Reut Caspi | e278b36 | 2017-10-19 08:49:19 +0100 | [diff] [blame] | 119 | TEST_ASSERT( mbedtls_ctr_drbg_seed( &ctx, mbedtls_test_entropy_func, entropy, NULL, 0 ) == 0 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 120 | TEST_ASSERT( last_idx < test_offset_idx ); |
| 121 | |
| 122 | /* By default, PR is off and reseed_interval is large, |
| 123 | * so the next few calls should not use entropy */ |
| 124 | last_idx = test_offset_idx; |
| 125 | for( i = 0; i < reps; i++ ) |
| 126 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 127 | TEST_ASSERT( mbedtls_ctr_drbg_random( &ctx, out, sizeof( out ) - 4 ) == 0 ); |
| 128 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, out, sizeof( out ) - 4, |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 129 | add, sizeof( add ) ) == 0 ); |
| 130 | } |
| 131 | TEST_ASSERT( last_idx == test_offset_idx ); |
| 132 | |
| 133 | /* While at it, make sure we didn't write past the requested length */ |
| 134 | TEST_ASSERT( out[sizeof( out ) - 4] == 0 ); |
| 135 | TEST_ASSERT( out[sizeof( out ) - 3] == 0 ); |
| 136 | TEST_ASSERT( out[sizeof( out ) - 2] == 0 ); |
| 137 | TEST_ASSERT( out[sizeof( out ) - 1] == 0 ); |
| 138 | |
| 139 | /* Set reseed_interval to the number of calls done, |
| 140 | * so the next call should reseed */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 141 | mbedtls_ctr_drbg_set_reseed_interval( &ctx, 2 * reps ); |
| 142 | TEST_ASSERT( mbedtls_ctr_drbg_random( &ctx, out, sizeof( out ) ) == 0 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 143 | TEST_ASSERT( last_idx < test_offset_idx ); |
| 144 | |
| 145 | /* The new few calls should not reseed */ |
| 146 | last_idx = test_offset_idx; |
| 147 | for( i = 0; i < reps / 2; i++ ) |
| 148 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 149 | TEST_ASSERT( mbedtls_ctr_drbg_random( &ctx, out, sizeof( out ) ) == 0 ); |
| 150 | TEST_ASSERT( mbedtls_ctr_drbg_random_with_add( &ctx, out, sizeof( out ) , |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 151 | add, sizeof( add ) ) == 0 ); |
| 152 | } |
| 153 | TEST_ASSERT( last_idx == test_offset_idx ); |
| 154 | |
Manuel Pégourié-Gonnard | f5f25b3 | 2014-11-27 14:04:56 +0100 | [diff] [blame] | 155 | /* Call update with too much data (sizeof entropy > MAX(_SEED)_INPUT) |
| 156 | * (just make sure it doesn't cause memory corruption) */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 157 | mbedtls_ctr_drbg_update( &ctx, entropy, sizeof( entropy ) ); |
Manuel Pégourié-Gonnard | f5f25b3 | 2014-11-27 14:04:56 +0100 | [diff] [blame] | 158 | |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 159 | /* Now enable PR, so the next few calls should all reseed */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 160 | mbedtls_ctr_drbg_set_prediction_resistance( &ctx, MBEDTLS_CTR_DRBG_PR_ON ); |
| 161 | TEST_ASSERT( mbedtls_ctr_drbg_random( &ctx, out, sizeof( out ) ) == 0 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 162 | TEST_ASSERT( last_idx < test_offset_idx ); |
| 163 | |
| 164 | /* Finally, check setting entropy_len */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 165 | mbedtls_ctr_drbg_set_entropy_len( &ctx, 42 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 166 | last_idx = test_offset_idx; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 167 | TEST_ASSERT( mbedtls_ctr_drbg_random( &ctx, out, sizeof( out ) ) == 0 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 168 | TEST_ASSERT( test_offset_idx - last_idx == 42 ); |
| 169 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 170 | mbedtls_ctr_drbg_set_entropy_len( &ctx, 13 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 171 | last_idx = test_offset_idx; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 172 | TEST_ASSERT( mbedtls_ctr_drbg_random( &ctx, out, sizeof( out ) ) == 0 ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 173 | TEST_ASSERT( test_offset_idx - last_idx == 13 ); |
Paul Bakker | a317a98 | 2014-06-18 16:44:11 +0200 | [diff] [blame] | 174 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 175 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 176 | mbedtls_ctr_drbg_free( &ctx ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 177 | } |
| 178 | /* END_CASE */ |
| 179 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 180 | /* BEGIN_CASE depends_on:MBEDTLS_FS_IO */ |
Azim Khan | f1aaec9 | 2017-05-30 14:23:15 +0100 | [diff] [blame] | 181 | void ctr_drbg_seed_file( char * path, int ret ) |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 182 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 183 | mbedtls_ctr_drbg_context ctx; |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 184 | |
Manuel Pégourié-Gonnard | 8d128ef | 2015-04-28 22:38:08 +0200 | [diff] [blame] | 185 | mbedtls_ctr_drbg_init( &ctx ); |
| 186 | |
| 187 | TEST_ASSERT( mbedtls_ctr_drbg_seed( &ctx, rnd_std_rand, NULL, NULL, 0 ) == 0 ); |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 188 | TEST_ASSERT( mbedtls_ctr_drbg_write_seed_file( &ctx, path ) == ret ); |
| 189 | TEST_ASSERT( mbedtls_ctr_drbg_update_seed_file( &ctx, path ) == ret ); |
Paul Bakker | a317a98 | 2014-06-18 16:44:11 +0200 | [diff] [blame] | 190 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 191 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 192 | mbedtls_ctr_drbg_free( &ctx ); |
Manuel Pégourié-Gonnard | 7575daa | 2014-01-31 12:16:54 +0100 | [diff] [blame] | 193 | } |
| 194 | /* END_CASE */ |
| 195 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 196 | /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */ |
Azim Khan | f1aaec9 | 2017-05-30 14:23:15 +0100 | [diff] [blame] | 197 | void ctr_drbg_selftest( ) |
Manuel Pégourié-Gonnard | b3b205e | 2014-01-31 12:04:06 +0100 | [diff] [blame] | 198 | { |
Andres AG | 93012e8 | 2016-09-09 09:10:28 +0100 | [diff] [blame] | 199 | TEST_ASSERT( mbedtls_ctr_drbg_self_test( 1 ) == 0 ); |
Manuel Pégourié-Gonnard | b3b205e | 2014-01-31 12:04:06 +0100 | [diff] [blame] | 200 | } |
| 201 | /* END_CASE */ |