SimonB | 1594210 | 2016-04-25 21:34:49 +0100 | [diff] [blame] | 1 | #line 1 "helpers.function" |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 2 | /*----------------------------------------------------------------------------*/ |
| 3 | /* Headers */ |
| 4 | |
Simon Butcher | edb7fd9 | 2016-05-17 13:35:51 +0100 | [diff] [blame] | 5 | #include <stdlib.h> |
| 6 | |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 7 | #if defined(MBEDTLS_PLATFORM_C) |
Manuel Pégourié-Gonnard | 7f80997 | 2015-03-09 17:05:11 +0000 | [diff] [blame] | 8 | #include "mbedtls/platform.h" |
Manuel Pégourié-Gonnard | 3d49b9d | 2014-06-06 14:48:09 +0200 | [diff] [blame] | 9 | #else |
Rich Evans | 00ab470 | 2015-02-06 13:43:58 +0000 | [diff] [blame] | 10 | #include <stdio.h> |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 11 | #define mbedtls_fprintf fprintf |
Simon Butcher | 2573136 | 2016-09-30 13:11:29 +0100 | [diff] [blame] | 12 | #define mbedtls_snprintf snprintf |
| 13 | #define mbedtls_calloc calloc |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 14 | #define mbedtls_free free |
| 15 | #define mbedtls_exit exit |
Simon Butcher | b2d5dd1 | 2016-04-27 13:35:37 +0100 | [diff] [blame] | 16 | #define mbedtls_time time |
| 17 | #define mbedtls_time_t time_t |
Janos Follath | 55abc21 | 2016-04-18 18:18:48 +0100 | [diff] [blame] | 18 | #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS |
| 19 | #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE |
Manuel Pégourié-Gonnard | 3d49b9d | 2014-06-06 14:48:09 +0200 | [diff] [blame] | 20 | #endif |
| 21 | |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 22 | #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) |
| 23 | #include "mbedtls/memory_buffer_alloc.h" |
| 24 | #endif |
| 25 | |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 26 | #ifdef _MSC_VER |
| 27 | #include <basetsd.h> |
| 28 | typedef UINT32 uint32_t; |
Nicholas Wilson | 733676b | 2015-11-14 13:09:01 +0000 | [diff] [blame] | 29 | #define strncasecmp _strnicmp |
| 30 | #define strcasecmp _stricmp |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 31 | #else |
Manuel Pégourié-Gonnard | 9386664 | 2015-06-22 19:21:23 +0200 | [diff] [blame] | 32 | #include <stdint.h> |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 33 | #endif |
| 34 | |
Paul Bakker | 1934318 | 2013-08-16 13:31:10 +0200 | [diff] [blame] | 35 | #include <string.h> |
| 36 | |
Janos Follath | 8ca53b5 | 2016-10-05 10:57:49 +0100 | [diff] [blame] | 37 | #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) |
| 38 | #include <unistd.h> |
| 39 | #endif |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 40 | |
| 41 | /*----------------------------------------------------------------------------*/ |
SimonB | 8ca7bc4 | 2016-04-17 23:24:50 +0100 | [diff] [blame] | 42 | /* Constants */ |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 43 | |
SimonB | 8ca7bc4 | 2016-04-17 23:24:50 +0100 | [diff] [blame] | 44 | #define DEPENDENCY_SUPPORTED 0 |
| 45 | #define DEPENDENCY_NOT_SUPPORTED 1 |
| 46 | |
| 47 | #define KEY_VALUE_MAPPING_FOUND 0 |
| 48 | #define KEY_VALUE_MAPPING_NOT_FOUND -1 |
| 49 | |
| 50 | #define DISPATCH_TEST_SUCCESS 0 |
| 51 | #define DISPATCH_TEST_FN_NOT_FOUND 1 |
| 52 | #define DISPATCH_INVALID_TEST_DATA 2 |
| 53 | #define DISPATCH_UNSUPPORTED_SUITE 3 |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 54 | |
| 55 | |
| 56 | /*----------------------------------------------------------------------------*/ |
| 57 | /* Macros */ |
| 58 | |
| 59 | #define TEST_ASSERT( TEST ) \ |
| 60 | do { \ |
| 61 | if( ! (TEST) ) \ |
| 62 | { \ |
SimonB | 31a6c49 | 2016-05-02 21:32:44 +0100 | [diff] [blame] | 63 | test_fail( #TEST, __LINE__, __FILE__ ); \ |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 64 | goto exit; \ |
| 65 | } \ |
| 66 | } while( 0 ) |
| 67 | |
Rich Evans | 4c09114 | 2015-02-02 12:04:10 +0000 | [diff] [blame] | 68 | #define assert(a) if( !( a ) ) \ |
| 69 | { \ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 70 | mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n", \ |
Rich Evans | 4c09114 | 2015-02-02 12:04:10 +0000 | [diff] [blame] | 71 | __FILE__, __LINE__, #a ); \ |
Manuel Pégourié-Gonnard | 2cf5a7c | 2015-04-08 12:49:31 +0200 | [diff] [blame] | 72 | mbedtls_exit( 1 ); \ |
Rich Evans | 4c09114 | 2015-02-02 12:04:10 +0000 | [diff] [blame] | 73 | } |
| 74 | |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 75 | /* |
| 76 | * 32-bit integer manipulation macros (big endian) |
| 77 | */ |
Paul Bakker | 5c2364c | 2012-10-01 14:41:15 +0000 | [diff] [blame] | 78 | #ifndef GET_UINT32_BE |
| 79 | #define GET_UINT32_BE(n,b,i) \ |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 80 | { \ |
Paul Bakker | 5c2364c | 2012-10-01 14:41:15 +0000 | [diff] [blame] | 81 | (n) = ( (uint32_t) (b)[(i) ] << 24 ) \ |
| 82 | | ( (uint32_t) (b)[(i) + 1] << 16 ) \ |
| 83 | | ( (uint32_t) (b)[(i) + 2] << 8 ) \ |
| 84 | | ( (uint32_t) (b)[(i) + 3] ); \ |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 85 | } |
| 86 | #endif |
| 87 | |
Paul Bakker | 5c2364c | 2012-10-01 14:41:15 +0000 | [diff] [blame] | 88 | #ifndef PUT_UINT32_BE |
| 89 | #define PUT_UINT32_BE(n,b,i) \ |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 90 | { \ |
| 91 | (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \ |
| 92 | (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \ |
| 93 | (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \ |
| 94 | (b)[(i) + 3] = (unsigned char) ( (n) ); \ |
| 95 | } |
| 96 | #endif |
| 97 | |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 98 | |
| 99 | /*----------------------------------------------------------------------------*/ |
SimonB | 8ca7bc4 | 2016-04-17 23:24:50 +0100 | [diff] [blame] | 100 | /* Global variables */ |
| 101 | |
| 102 | static int test_errors = 0; |
| 103 | |
| 104 | |
| 105 | /*----------------------------------------------------------------------------*/ |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 106 | /* Helper Functions */ |
| 107 | |
Janos Follath | 8ca53b5 | 2016-10-05 10:57:49 +0100 | [diff] [blame] | 108 | #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) |
| 109 | static int redirect_output( FILE** out_stream, const char* path ) |
| 110 | { |
| 111 | int stdout_fd = dup( fileno( *out_stream ) ); |
| 112 | |
| 113 | if( stdout_fd == -1 ) |
| 114 | { |
| 115 | return -1; |
| 116 | } |
| 117 | |
| 118 | fflush( *out_stream ); |
| 119 | fclose( *out_stream ); |
| 120 | *out_stream = fopen( path, "w" ); |
| 121 | |
| 122 | if( *out_stream == NULL ) |
| 123 | { |
| 124 | return -1; |
| 125 | } |
| 126 | |
| 127 | return stdout_fd; |
| 128 | } |
| 129 | |
| 130 | static int restore_output( FILE** out_stream, int old_fd ) |
| 131 | { |
| 132 | fflush( *out_stream ); |
| 133 | fclose( *out_stream ); |
| 134 | |
| 135 | *out_stream = fdopen( old_fd, "w" ); |
| 136 | if( *out_stream == NULL ) |
| 137 | { |
| 138 | return -1; |
| 139 | } |
| 140 | |
| 141 | return 0; |
| 142 | } |
Simon Butcher | e019296 | 2016-10-12 23:07:30 +0100 | [diff] [blame] | 143 | |
Janos Follath | e709f7c | 2016-10-13 11:26:29 +0100 | [diff] [blame^] | 144 | static void close_output( FILE* out_stream ) |
Simon Butcher | e019296 | 2016-10-12 23:07:30 +0100 | [diff] [blame] | 145 | { |
Janos Follath | e709f7c | 2016-10-13 11:26:29 +0100 | [diff] [blame^] | 146 | fclose( out_stream ); |
Simon Butcher | e019296 | 2016-10-12 23:07:30 +0100 | [diff] [blame] | 147 | } |
Janos Follath | 8ca53b5 | 2016-10-05 10:57:49 +0100 | [diff] [blame] | 148 | #endif /* __unix__ || __APPLE__ __MACH__ */ |
| 149 | |
Rich Evans | 4c09114 | 2015-02-02 12:04:10 +0000 | [diff] [blame] | 150 | static int unhexify( unsigned char *obuf, const char *ibuf ) |
Paul Bakker | 367dae4 | 2009-06-28 21:50:27 +0000 | [diff] [blame] | 151 | { |
| 152 | unsigned char c, c2; |
Rich Evans | 4c09114 | 2015-02-02 12:04:10 +0000 | [diff] [blame] | 153 | int len = strlen( ibuf ) / 2; |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 154 | assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */ |
Paul Bakker | 367dae4 | 2009-06-28 21:50:27 +0000 | [diff] [blame] | 155 | |
Rich Evans | 4c09114 | 2015-02-02 12:04:10 +0000 | [diff] [blame] | 156 | while( *ibuf != 0 ) |
Paul Bakker | 367dae4 | 2009-06-28 21:50:27 +0000 | [diff] [blame] | 157 | { |
| 158 | c = *ibuf++; |
| 159 | if( c >= '0' && c <= '9' ) |
| 160 | c -= '0'; |
| 161 | else if( c >= 'a' && c <= 'f' ) |
| 162 | c -= 'a' - 10; |
| 163 | else if( c >= 'A' && c <= 'F' ) |
| 164 | c -= 'A' - 10; |
| 165 | else |
| 166 | assert( 0 ); |
| 167 | |
| 168 | c2 = *ibuf++; |
| 169 | if( c2 >= '0' && c2 <= '9' ) |
| 170 | c2 -= '0'; |
| 171 | else if( c2 >= 'a' && c2 <= 'f' ) |
| 172 | c2 -= 'a' - 10; |
| 173 | else if( c2 >= 'A' && c2 <= 'F' ) |
| 174 | c2 -= 'A' - 10; |
| 175 | else |
| 176 | assert( 0 ); |
| 177 | |
| 178 | *obuf++ = ( c << 4 ) | c2; |
| 179 | } |
| 180 | |
| 181 | return len; |
| 182 | } |
| 183 | |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 184 | static void hexify( unsigned char *obuf, const unsigned char *ibuf, int len ) |
Paul Bakker | 367dae4 | 2009-06-28 21:50:27 +0000 | [diff] [blame] | 185 | { |
| 186 | unsigned char l, h; |
| 187 | |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 188 | while( len != 0 ) |
Paul Bakker | 367dae4 | 2009-06-28 21:50:27 +0000 | [diff] [blame] | 189 | { |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 190 | h = *ibuf / 16; |
| 191 | l = *ibuf % 16; |
Paul Bakker | 367dae4 | 2009-06-28 21:50:27 +0000 | [diff] [blame] | 192 | |
| 193 | if( h < 10 ) |
| 194 | *obuf++ = '0' + h; |
| 195 | else |
| 196 | *obuf++ = 'a' + h - 10; |
| 197 | |
| 198 | if( l < 10 ) |
| 199 | *obuf++ = '0' + l; |
| 200 | else |
| 201 | *obuf++ = 'a' + l - 10; |
| 202 | |
| 203 | ++ibuf; |
| 204 | len--; |
| 205 | } |
| 206 | } |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 207 | |
| 208 | /** |
Manuel Pégourié-Gonnard | 0dc5e0d | 2014-06-13 21:09:26 +0200 | [diff] [blame] | 209 | * Allocate and zeroize a buffer. |
| 210 | * |
| 211 | * If the size if zero, a pointer to a zeroized 1-byte buffer is returned. |
| 212 | * |
| 213 | * For convenience, dies if allocation fails. |
| 214 | */ |
| 215 | static unsigned char *zero_alloc( size_t len ) |
| 216 | { |
| 217 | void *p; |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 218 | size_t actual_len = ( len != 0 ) ? len : 1; |
Manuel Pégourié-Gonnard | 0dc5e0d | 2014-06-13 21:09:26 +0200 | [diff] [blame] | 219 | |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 220 | p = mbedtls_calloc( 1, actual_len ); |
Paul Bakker | 4d0cfe8 | 2014-07-10 14:37:36 +0200 | [diff] [blame] | 221 | assert( p != NULL ); |
Manuel Pégourié-Gonnard | 0dc5e0d | 2014-06-13 21:09:26 +0200 | [diff] [blame] | 222 | |
| 223 | memset( p, 0x00, actual_len ); |
| 224 | |
| 225 | return( p ); |
| 226 | } |
| 227 | |
| 228 | /** |
Manuel Pégourié-Gonnard | 3d49b9d | 2014-06-06 14:48:09 +0200 | [diff] [blame] | 229 | * Allocate and fill a buffer from hex data. |
| 230 | * |
| 231 | * The buffer is sized exactly as needed. This allows to detect buffer |
| 232 | * overruns (including overreads) when running the test suite under valgrind. |
| 233 | * |
Manuel Pégourié-Gonnard | 0dc5e0d | 2014-06-13 21:09:26 +0200 | [diff] [blame] | 234 | * If the size if zero, a pointer to a zeroized 1-byte buffer is returned. |
| 235 | * |
Manuel Pégourié-Gonnard | 3d49b9d | 2014-06-06 14:48:09 +0200 | [diff] [blame] | 236 | * For convenience, dies if allocation fails. |
| 237 | */ |
| 238 | static unsigned char *unhexify_alloc( const char *ibuf, size_t *olen ) |
| 239 | { |
| 240 | unsigned char *obuf; |
| 241 | |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 242 | *olen = strlen( ibuf ) / 2; |
Manuel Pégourié-Gonnard | 3d49b9d | 2014-06-06 14:48:09 +0200 | [diff] [blame] | 243 | |
Manuel Pégourié-Gonnard | 0dc5e0d | 2014-06-13 21:09:26 +0200 | [diff] [blame] | 244 | if( *olen == 0 ) |
| 245 | return( zero_alloc( *olen ) ); |
| 246 | |
Manuel Pégourié-Gonnard | 7551cb9 | 2015-05-26 16:04:06 +0200 | [diff] [blame] | 247 | obuf = mbedtls_calloc( 1, *olen ); |
Paul Bakker | 4d0cfe8 | 2014-07-10 14:37:36 +0200 | [diff] [blame] | 248 | assert( obuf != NULL ); |
Manuel Pégourié-Gonnard | 3d49b9d | 2014-06-06 14:48:09 +0200 | [diff] [blame] | 249 | |
| 250 | (void) unhexify( obuf, ibuf ); |
| 251 | |
| 252 | return( obuf ); |
| 253 | } |
| 254 | |
| 255 | /** |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 256 | * This function just returns data from rand(). |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 257 | * Although predictable and often similar on multiple |
| 258 | * runs, this does not result in identical random on |
| 259 | * each run. So do not use this if the results of a |
| 260 | * test depend on the random data that is generated. |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 261 | * |
| 262 | * rng_state shall be NULL. |
| 263 | */ |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 264 | static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len ) |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 265 | { |
Paul Bakker | f96f7b6 | 2014-04-30 16:02:38 +0200 | [diff] [blame] | 266 | #if !defined(__OpenBSD__) |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 267 | size_t i; |
| 268 | |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 269 | if( rng_state != NULL ) |
| 270 | rng_state = NULL; |
| 271 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 272 | for( i = 0; i < len; ++i ) |
| 273 | output[i] = rand(); |
Paul Bakker | f96f7b6 | 2014-04-30 16:02:38 +0200 | [diff] [blame] | 274 | #else |
| 275 | if( rng_state != NULL ) |
| 276 | rng_state = NULL; |
| 277 | |
| 278 | arc4random_buf( output, len ); |
| 279 | #endif /* !OpenBSD */ |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 280 | |
| 281 | return( 0 ); |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | /** |
| 285 | * This function only returns zeros |
| 286 | * |
| 287 | * rng_state shall be NULL. |
| 288 | */ |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 289 | static int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len ) |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 290 | { |
| 291 | if( rng_state != NULL ) |
| 292 | rng_state = NULL; |
| 293 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 294 | memset( output, 0, len ); |
| 295 | |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 296 | return( 0 ); |
| 297 | } |
| 298 | |
| 299 | typedef struct |
| 300 | { |
| 301 | unsigned char *buf; |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 302 | size_t length; |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 303 | } rnd_buf_info; |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 304 | |
| 305 | /** |
| 306 | * This function returns random based on a buffer it receives. |
| 307 | * |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 308 | * rng_state shall be a pointer to a rnd_buf_info structure. |
Manuel Pégourié-Gonnard | e670f90 | 2015-10-30 09:23:19 +0100 | [diff] [blame] | 309 | * |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 310 | * The number of bytes released from the buffer on each call to |
| 311 | * the random function is specified by per_call. (Can be between |
| 312 | * 1 and 4) |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 313 | * |
| 314 | * After the buffer is empty it will return rand(); |
| 315 | */ |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 316 | static int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len ) |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 317 | { |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 318 | rnd_buf_info *info = (rnd_buf_info *) rng_state; |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 319 | size_t use_len; |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 320 | |
| 321 | if( rng_state == NULL ) |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 322 | return( rnd_std_rand( NULL, output, len ) ); |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 323 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 324 | use_len = len; |
| 325 | if( len > info->length ) |
| 326 | use_len = info->length; |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 327 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 328 | if( use_len ) |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 329 | { |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 330 | memcpy( output, info->buf, use_len ); |
| 331 | info->buf += use_len; |
| 332 | info->length -= use_len; |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 333 | } |
| 334 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 335 | if( len - use_len > 0 ) |
| 336 | return( rnd_std_rand( NULL, output + use_len, len - use_len ) ); |
| 337 | |
| 338 | return( 0 ); |
Paul Bakker | 9dcc322 | 2011-03-08 14:16:06 +0000 | [diff] [blame] | 339 | } |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 340 | |
| 341 | /** |
| 342 | * Info structure for the pseudo random function |
| 343 | * |
| 344 | * Key should be set at the start to a test-unique value. |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 345 | * Do not forget endianness! |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 346 | * State( v0, v1 ) should be set to zero. |
| 347 | */ |
| 348 | typedef struct |
| 349 | { |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 350 | uint32_t key[16]; |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 351 | uint32_t v0, v1; |
| 352 | } rnd_pseudo_info; |
| 353 | |
| 354 | /** |
| 355 | * This function returns random based on a pseudo random function. |
| 356 | * This means the results should be identical on all systems. |
| 357 | * Pseudo random is based on the XTEA encryption algorithm to |
| 358 | * generate pseudorandom. |
| 359 | * |
| 360 | * rng_state shall be a pointer to a rnd_pseudo_info structure. |
| 361 | */ |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 362 | static int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len ) |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 363 | { |
| 364 | rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state; |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 365 | uint32_t i, *k, sum, delta=0x9E3779B9; |
Manuel Pégourié-Gonnard | 217a29c | 2014-01-03 11:59:09 +0100 | [diff] [blame] | 366 | unsigned char result[4], *out = output; |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 367 | |
| 368 | if( rng_state == NULL ) |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 369 | return( rnd_std_rand( NULL, output, len ) ); |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 370 | |
Paul Bakker | b3dcbc1 | 2011-03-13 16:57:25 +0000 | [diff] [blame] | 371 | k = info->key; |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 372 | |
| 373 | while( len > 0 ) |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 374 | { |
Paul Bakker | 40dd530 | 2012-05-15 15:02:38 +0000 | [diff] [blame] | 375 | size_t use_len = ( len > 4 ) ? 4 : len; |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 376 | sum = 0; |
| 377 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 378 | for( i = 0; i < 32; i++ ) |
| 379 | { |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 380 | info->v0 += ( ( ( info->v1 << 4 ) ^ ( info->v1 >> 5 ) ) |
| 381 | + info->v1 ) ^ ( sum + k[sum & 3] ); |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 382 | sum += delta; |
Rich Evans | 4291445 | 2015-02-02 12:09:25 +0000 | [diff] [blame] | 383 | info->v1 += ( ( ( info->v0 << 4 ) ^ ( info->v0 >> 5 ) ) |
| 384 | + info->v0 ) ^ ( sum + k[( sum>>11 ) & 3] ); |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 385 | } |
| 386 | |
Paul Bakker | 5c2364c | 2012-10-01 14:41:15 +0000 | [diff] [blame] | 387 | PUT_UINT32_BE( info->v0, result, 0 ); |
Manuel Pégourié-Gonnard | 217a29c | 2014-01-03 11:59:09 +0100 | [diff] [blame] | 388 | memcpy( out, result, use_len ); |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 389 | len -= use_len; |
Manuel Pégourié-Gonnard | 217a29c | 2014-01-03 11:59:09 +0100 | [diff] [blame] | 390 | out += 4; |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 391 | } |
| 392 | |
Paul Bakker | a3d195c | 2011-11-27 21:07:34 +0000 | [diff] [blame] | 393 | return( 0 ); |
Paul Bakker | 997bbd1 | 2011-03-13 15:45:42 +0000 | [diff] [blame] | 394 | } |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 395 | |
Simon Butcher | d96924d | 2016-05-06 00:22:18 +0100 | [diff] [blame] | 396 | static void test_fail( const char *test, int line_no, const char* filename ) |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 397 | { |
| 398 | test_errors++; |
| 399 | if( test_errors == 1 ) |
Simon Butcher | 2573136 | 2016-09-30 13:11:29 +0100 | [diff] [blame] | 400 | mbedtls_fprintf( stdout, "FAILED\n" ); |
| 401 | mbedtls_fprintf( stdout, " %s\n at line %d, %s\n", test, line_no, |
| 402 | filename ); |
SimonB | 0269dad | 2016-02-17 23:34:30 +0000 | [diff] [blame] | 403 | } |
| 404 | |