Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 1 | /* BEGIN_HEADER */ |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 2 | #include "mbedtls/entropy.h" |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 3 | |
| 4 | /* |
| 5 | * Number of calls made to entropy_dummy_source() |
| 6 | */ |
| 7 | static size_t entropy_dummy_calls; |
| 8 | |
| 9 | /* |
| 10 | * Dummy entropy source |
| 11 | * |
| 12 | * If data is NULL, write exactly the requested length. |
| 13 | * Otherwise, write the length indicated by data or error if negative |
| 14 | */ |
| 15 | static int entropy_dummy_source( void *data, unsigned char *output, |
| 16 | size_t len, size_t *olen ) |
| 17 | { |
| 18 | entropy_dummy_calls++; |
| 19 | |
| 20 | if( data == NULL ) |
| 21 | *olen = len; |
| 22 | else |
| 23 | { |
| 24 | int *d = (int *) data; |
| 25 | |
| 26 | if( *d < 0 ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 27 | return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 28 | else |
| 29 | *olen = *d; |
| 30 | } |
| 31 | |
| 32 | memset( output, 0x2a, *olen ); |
| 33 | |
| 34 | return( 0 ); |
| 35 | } |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 36 | /* END_HEADER */ |
| 37 | |
| 38 | /* BEGIN_DEPENDENCIES |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 39 | * depends_on:MBEDTLS_ENTROPY_C |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 40 | * END_DEPENDENCIES |
| 41 | */ |
| 42 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 43 | /* BEGIN_CASE depends_on:MBEDTLS_FS_IO */ |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 44 | void entropy_seed_file( char *path, int ret ) |
| 45 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 46 | mbedtls_entropy_context ctx; |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 47 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 48 | mbedtls_entropy_init( &ctx ); |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 49 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 50 | TEST_ASSERT( mbedtls_entropy_write_seed_file( &ctx, path ) == ret ); |
| 51 | TEST_ASSERT( mbedtls_entropy_update_seed_file( &ctx, path ) == ret ); |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 52 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 53 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 54 | mbedtls_entropy_free( &ctx ); |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 55 | } |
| 56 | /* END_CASE */ |
| 57 | |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 58 | /* BEGIN_CASE */ |
| 59 | void entropy_too_many_sources( ) |
| 60 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 61 | mbedtls_entropy_context ctx; |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 62 | size_t i; |
| 63 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 64 | mbedtls_entropy_init( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 65 | |
| 66 | /* |
| 67 | * It's hard to tell precisely when the error will occur, |
| 68 | * since we don't know how many sources were automatically added. |
| 69 | */ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 70 | for( i = 0; i < MBEDTLS_ENTROPY_MAX_SOURCES; i++ ) |
Manuel Pégourié-Gonnard | 7580ba4 | 2015-06-19 10:26:32 +0200 | [diff] [blame^] | 71 | (void) mbedtls_entropy_add_source( &ctx, entropy_dummy_source, NULL, |
| 72 | 16, MBEDTLS_ENTROPY_SOURCE_WEAK ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 73 | |
Manuel Pégourié-Gonnard | 7580ba4 | 2015-06-19 10:26:32 +0200 | [diff] [blame^] | 74 | TEST_ASSERT( mbedtls_entropy_add_source( &ctx, entropy_dummy_source, NULL, |
| 75 | 16, MBEDTLS_ENTROPY_SOURCE_WEAK ) |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 76 | == MBEDTLS_ERR_ENTROPY_MAX_SOURCES ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 77 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 78 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 79 | mbedtls_entropy_free( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 80 | } |
| 81 | /* END_CASE */ |
| 82 | |
| 83 | /* BEGIN_CASE */ |
| 84 | void entropy_func_len( int len, int ret ) |
| 85 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 86 | mbedtls_entropy_context ctx; |
| 87 | unsigned char buf[MBEDTLS_ENTROPY_BLOCK_SIZE + 10] = { 0 }; |
| 88 | unsigned char acc[MBEDTLS_ENTROPY_BLOCK_SIZE + 10] = { 0 }; |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 89 | size_t i, j; |
| 90 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 91 | mbedtls_entropy_init( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 92 | |
| 93 | /* |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 94 | * See comments in mbedtls_entropy_self_test() |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 95 | */ |
| 96 | for( i = 0; i < 8; i++ ) |
| 97 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 98 | TEST_ASSERT( mbedtls_entropy_func( &ctx, buf, len ) == ret ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 99 | for( j = 0; j < sizeof( buf ); j++ ) |
| 100 | acc[j] |= buf[j]; |
| 101 | } |
| 102 | |
| 103 | if( ret == 0 ) |
| 104 | for( j = 0; j < (size_t) len; j++ ) |
| 105 | TEST_ASSERT( acc[j] != 0 ); |
| 106 | |
| 107 | for( j = len; j < sizeof( buf ); j++ ) |
| 108 | TEST_ASSERT( acc[j] == 0 ); |
| 109 | } |
| 110 | /* END_CASE */ |
| 111 | |
| 112 | /* BEGIN_CASE */ |
| 113 | void entropy_source_fail( char *path ) |
| 114 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 115 | mbedtls_entropy_context ctx; |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 116 | int fail = -1; |
| 117 | unsigned char buf[16]; |
| 118 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 119 | mbedtls_entropy_init( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 120 | |
Manuel Pégourié-Gonnard | 7580ba4 | 2015-06-19 10:26:32 +0200 | [diff] [blame^] | 121 | TEST_ASSERT( mbedtls_entropy_add_source( &ctx, entropy_dummy_source, |
| 122 | &fail, 16, |
| 123 | MBEDTLS_ENTROPY_SOURCE_WEAK ) |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 124 | == 0 ); |
| 125 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 126 | TEST_ASSERT( mbedtls_entropy_func( &ctx, buf, sizeof( buf ) ) |
| 127 | == MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); |
| 128 | TEST_ASSERT( mbedtls_entropy_gather( &ctx ) |
| 129 | == MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); |
| 130 | #if defined(MBEDTLS_FS_IO) |
| 131 | TEST_ASSERT( mbedtls_entropy_write_seed_file( &ctx, path ) |
| 132 | == MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); |
| 133 | TEST_ASSERT( mbedtls_entropy_update_seed_file( &ctx, path ) |
| 134 | == MBEDTLS_ERR_ENTROPY_SOURCE_FAILED ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 135 | #else |
| 136 | ((void) path); |
| 137 | #endif |
| 138 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 139 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 140 | mbedtls_entropy_free( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 141 | } |
| 142 | /* END_CASE */ |
| 143 | |
| 144 | /* BEGIN_CASE */ |
| 145 | void entropy_threshold( int threshold, int chunk_size, int result ) |
| 146 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 147 | mbedtls_entropy_context ctx; |
| 148 | unsigned char buf[MBEDTLS_ENTROPY_BLOCK_SIZE] = { 0 }; |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 149 | int ret; |
| 150 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 151 | mbedtls_entropy_init( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 152 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 153 | TEST_ASSERT( mbedtls_entropy_add_source( &ctx, entropy_dummy_source, |
Manuel Pégourié-Gonnard | 7580ba4 | 2015-06-19 10:26:32 +0200 | [diff] [blame^] | 154 | &chunk_size, threshold, |
| 155 | MBEDTLS_ENTROPY_SOURCE_WEAK ) == 0 ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 156 | |
| 157 | entropy_dummy_calls = 0; |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 158 | ret = mbedtls_entropy_func( &ctx, buf, sizeof( buf ) ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 159 | |
| 160 | if( result >= 0 ) |
| 161 | { |
| 162 | TEST_ASSERT( ret == 0 ); |
| 163 | TEST_ASSERT( entropy_dummy_calls == (size_t) result ); |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | TEST_ASSERT( ret == result ); |
| 168 | } |
| 169 | |
Paul Bakker | bd51b26 | 2014-07-10 15:26:12 +0200 | [diff] [blame] | 170 | exit: |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 171 | mbedtls_entropy_free( &ctx ); |
Manuel Pégourié-Gonnard | c7c56b2 | 2014-05-30 11:42:01 +0200 | [diff] [blame] | 172 | } |
| 173 | /* END_CASE */ |
| 174 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 175 | /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */ |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 176 | void entropy_selftest( ) |
| 177 | { |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 178 | TEST_ASSERT( mbedtls_entropy_self_test( 0 ) == 0 ); |
Manuel Pégourié-Gonnard | 2c25eb0 | 2014-05-30 10:38:18 +0200 | [diff] [blame] | 179 | } |
| 180 | /* END_CASE */ |