Nayna Jain | c9deb18 | 2020-11-16 19:03:12 +0000 | [diff] [blame^] | 1 | /* BEGIN_HEADER */ |
| 2 | #include "mbedtls/bignum.h" |
| 3 | #include "mbedtls/pkcs7.h" |
| 4 | #include "mbedtls/x509.h" |
| 5 | #include "mbedtls/x509_crt.h" |
| 6 | #include "mbedtls/x509_crl.h" |
| 7 | #include "mbedtls/oid.h" |
| 8 | #include "sys/types.h" |
| 9 | #include "sys/stat.h" |
| 10 | /* END_HEADER */ |
| 11 | |
| 12 | /* BEGIN_DEPENDENCIES |
| 13 | * depends_on:MBEDTLS_PKCS7_C:MBEDTLS_FS_IO |
| 14 | * END_DEPENDENCIES |
| 15 | */ |
| 16 | |
| 17 | /* BEGIN_CASE depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 18 | void pkcs7_parse( char *pkcs7_file ) |
| 19 | { |
| 20 | unsigned char *pkcs7_buf = NULL; |
| 21 | size_t buflen; |
| 22 | int res; |
| 23 | |
| 24 | mbedtls_pkcs7 pkcs7; |
| 25 | |
| 26 | mbedtls_pkcs7_init( &pkcs7 ); |
| 27 | |
| 28 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 29 | TEST_ASSERT( res == 0 ); |
| 30 | |
| 31 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 32 | TEST_ASSERT( res == 0 ); |
| 33 | |
| 34 | exit: |
| 35 | mbedtls_free( pkcs7_buf ); |
| 36 | mbedtls_pkcs7_free( &pkcs7 ); |
| 37 | } |
| 38 | /* END_CASE */ |
| 39 | |
| 40 | /* BEGIN_CASE depends_on:MBEDTLS_SHA256_C*/ |
| 41 | void pkcs7_parse_without_cert( char *pkcs7_file ) |
| 42 | { |
| 43 | unsigned char *pkcs7_buf = NULL; |
| 44 | size_t buflen; |
| 45 | int res; |
| 46 | |
| 47 | mbedtls_pkcs7 pkcs7; |
| 48 | |
| 49 | mbedtls_pkcs7_init( &pkcs7 ); |
| 50 | |
| 51 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 52 | TEST_ASSERT( res == 0 ); |
| 53 | |
| 54 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 55 | TEST_ASSERT( res == 0 ); |
| 56 | |
| 57 | exit: |
| 58 | mbedtls_free( pkcs7_buf ); |
| 59 | mbedtls_pkcs7_free( &pkcs7 ); |
| 60 | } |
| 61 | /* END_CASE */ |
| 62 | |
| 63 | /* BEGIN_CASE depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 64 | void pkcs7_parse_multiple_signers( char *pkcs7_file ) |
| 65 | { |
| 66 | unsigned char *pkcs7_buf = NULL; |
| 67 | size_t buflen; |
| 68 | int res; |
| 69 | |
| 70 | mbedtls_pkcs7 pkcs7; |
| 71 | |
| 72 | mbedtls_pkcs7_init( &pkcs7 ); |
| 73 | |
| 74 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 75 | TEST_ASSERT( res == 0 ); |
| 76 | |
| 77 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 78 | TEST_ASSERT( res < 0 ); |
| 79 | |
| 80 | switch ( res ){ |
| 81 | case MBEDTLS_ERR_PKCS7_INVALID_CERT: |
| 82 | TEST_ASSERT( res == MBEDTLS_ERR_PKCS7_INVALID_CERT ); |
| 83 | break; |
| 84 | |
| 85 | case MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO: |
| 86 | TEST_ASSERT( res == MBEDTLS_ERR_PKCS7_INVALID_SIGNER_INFO ); |
| 87 | break; |
| 88 | default: |
| 89 | TEST_ASSERT(0); |
| 90 | } |
| 91 | |
| 92 | exit: |
| 93 | mbedtls_free( pkcs7_buf ); |
| 94 | mbedtls_pkcs7_free( &pkcs7 ); |
| 95 | } |
| 96 | /* END_CASE */ |
| 97 | |
| 98 | /* BEGIN_CASE depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 99 | void pkcs7_parse_corrupted_cert( char *pkcs7_file ) |
| 100 | { |
| 101 | unsigned char *pkcs7_buf = NULL; |
| 102 | size_t buflen; |
| 103 | int res; |
| 104 | |
| 105 | mbedtls_pkcs7 pkcs7; |
| 106 | |
| 107 | mbedtls_pkcs7_init( &pkcs7 ); |
| 108 | |
| 109 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 110 | TEST_ASSERT( res == 0 ); |
| 111 | |
| 112 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 113 | TEST_ASSERT( res == MBEDTLS_ERR_PKCS7_INVALID_CERT ); |
| 114 | |
| 115 | exit: |
| 116 | mbedtls_free( pkcs7_buf ); |
| 117 | mbedtls_pkcs7_free( &pkcs7 ); |
| 118 | } |
| 119 | /* END_CASE */ |
| 120 | |
| 121 | /* BEGIN_CASE depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 122 | void pkcs7_parse_corrupted_signer_info( char *pkcs7_file ) |
| 123 | { |
| 124 | unsigned char *pkcs7_buf = NULL; |
| 125 | size_t buflen; |
| 126 | int res; |
| 127 | |
| 128 | mbedtls_pkcs7 pkcs7; |
| 129 | |
| 130 | mbedtls_pkcs7_init( &pkcs7 ); |
| 131 | |
| 132 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 133 | TEST_ASSERT( res == 0 ); |
| 134 | |
| 135 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 136 | TEST_ASSERT( res < 0 ); |
| 137 | |
| 138 | exit: |
| 139 | mbedtls_free( pkcs7_buf ); |
| 140 | mbedtls_pkcs7_free( &pkcs7 ); |
| 141 | } |
| 142 | /* END_CASE */ |
| 143 | |
| 144 | /* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */ |
| 145 | void pkcs7_parse_version( char *pkcs7_file ) |
| 146 | { |
| 147 | unsigned char *pkcs7_buf = NULL; |
| 148 | size_t buflen; |
| 149 | int res; |
| 150 | |
| 151 | mbedtls_pkcs7 pkcs7; |
| 152 | |
| 153 | mbedtls_pkcs7_init( &pkcs7 ); |
| 154 | |
| 155 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 156 | TEST_ASSERT( res == 0 ); |
| 157 | |
| 158 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 159 | TEST_ASSERT( res == MBEDTLS_ERR_PKCS7_INVALID_VERSION ); |
| 160 | |
| 161 | exit: |
| 162 | mbedtls_free( pkcs7_buf ); |
| 163 | mbedtls_pkcs7_free( &pkcs7 ); |
| 164 | } |
| 165 | /* END_CASE */ |
| 166 | |
| 167 | /* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */ |
| 168 | void pkcs7_parse_content_oid( char *pkcs7_file ) |
| 169 | { |
| 170 | unsigned char *pkcs7_buf = NULL; |
| 171 | size_t buflen; |
| 172 | int res; |
| 173 | mbedtls_pkcs7 pkcs7; |
| 174 | |
| 175 | mbedtls_pkcs7_init( &pkcs7 ); |
| 176 | |
| 177 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen); |
| 178 | TEST_ASSERT( res == 0 ); |
| 179 | |
| 180 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 181 | TEST_ASSERT( res != 0 ); |
| 182 | TEST_ASSERT( res == MBEDTLS_ERR_PKCS7_FEATURE_UNAVAILABLE ); |
| 183 | exit: |
| 184 | mbedtls_free( pkcs7_buf ); |
| 185 | mbedtls_pkcs7_free( &pkcs7 ); |
| 186 | } |
| 187 | /* END_CASE */ |
| 188 | |
| 189 | /* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PKCS1_V15:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 190 | void pkcs7_verify( char *pkcs7_file, char *crt, char *filetobesigned ) |
| 191 | { |
| 192 | unsigned char *pkcs7_buf = NULL; |
| 193 | size_t buflen; |
| 194 | unsigned char *data = NULL; |
| 195 | struct stat st; |
| 196 | size_t datalen; |
| 197 | int res; |
| 198 | FILE *file; |
| 199 | |
| 200 | mbedtls_pkcs7 pkcs7; |
| 201 | mbedtls_x509_crt x509; |
| 202 | |
| 203 | mbedtls_pkcs7_init( &pkcs7 ); |
| 204 | mbedtls_x509_crt_init( &x509 ); |
| 205 | |
| 206 | res = mbedtls_x509_crt_parse_file( &x509, crt ); |
| 207 | TEST_ASSERT( res == 0 ); |
| 208 | |
| 209 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 210 | TEST_ASSERT( res == 0 ); |
| 211 | |
| 212 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 213 | TEST_ASSERT( res == 0 ); |
| 214 | mbedtls_free( pkcs7_buf ); |
| 215 | |
| 216 | res = stat(filetobesigned, &st); |
| 217 | TEST_ASSERT( res == 0 ); |
| 218 | |
| 219 | file = fopen( filetobesigned, "rb" ); |
| 220 | TEST_ASSERT( file != NULL ); |
| 221 | |
| 222 | datalen = st.st_size; |
| 223 | data = mbedtls_calloc( datalen, 1 ); |
| 224 | buflen = fread( ( void * )data , sizeof( unsigned char ), datalen, file ); |
| 225 | TEST_ASSERT( buflen == datalen); |
| 226 | |
| 227 | fclose(file); |
| 228 | |
| 229 | res = mbedtls_pkcs7_signed_data_verify( &pkcs7, &x509, data, datalen ); |
| 230 | TEST_ASSERT( res == 0 ); |
| 231 | |
| 232 | exit: |
| 233 | mbedtls_x509_crt_free( &x509 ); |
| 234 | mbedtls_free( data ); |
| 235 | mbedtls_pkcs7_free( &pkcs7 ); |
| 236 | } |
| 237 | /* END_CASE */ |
| 238 | |
| 239 | /* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PKCS1_V15:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 240 | void pkcs7_verify_hash( char *pkcs7_file, char *crt, char *filetobesigned ) |
| 241 | { |
| 242 | unsigned char *pkcs7_buf = NULL; |
| 243 | size_t buflen; |
| 244 | unsigned char *data = NULL; |
| 245 | unsigned char hash[32]; |
| 246 | struct stat st; |
| 247 | size_t datalen; |
| 248 | int res; |
| 249 | FILE *file; |
| 250 | const mbedtls_md_info_t *md_info; |
| 251 | mbedtls_md_type_t md_alg; |
| 252 | |
| 253 | mbedtls_pkcs7 pkcs7; |
| 254 | mbedtls_x509_crt x509; |
| 255 | |
| 256 | mbedtls_pkcs7_init( &pkcs7 ); |
| 257 | mbedtls_x509_crt_init( &x509 ); |
| 258 | |
| 259 | res = mbedtls_x509_crt_parse_file( &x509, crt ); |
| 260 | TEST_ASSERT( res == 0 ); |
| 261 | |
| 262 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 263 | TEST_ASSERT( res == 0 ); |
| 264 | |
| 265 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 266 | TEST_ASSERT( res == 0 ); |
| 267 | |
| 268 | res = stat(filetobesigned, &st); |
| 269 | TEST_ASSERT( res == 0 ); |
| 270 | |
| 271 | file = fopen( filetobesigned, "rb" ); |
| 272 | TEST_ASSERT( file != NULL ); |
| 273 | |
| 274 | datalen = st.st_size; |
| 275 | data = mbedtls_calloc( datalen, 1 ); |
| 276 | TEST_ASSERT( data != NULL); |
| 277 | |
| 278 | buflen = fread( (void *)data , sizeof( unsigned char ), datalen, file ); |
| 279 | TEST_ASSERT( buflen == datalen); |
| 280 | fclose( file ); |
| 281 | |
| 282 | res = mbedtls_oid_get_md_alg( &(pkcs7.signed_data.digest_alg_identifiers), &md_alg ); |
| 283 | TEST_ASSERT( res == 0 ); |
| 284 | TEST_ASSERT( md_alg == MBEDTLS_MD_SHA256 ); |
| 285 | |
| 286 | md_info = mbedtls_md_info_from_type( md_alg ); |
| 287 | |
| 288 | mbedtls_md( md_info, data, datalen, hash ); |
| 289 | |
| 290 | res = mbedtls_pkcs7_signed_hash_verify( &pkcs7, &x509, hash, sizeof(hash)); |
| 291 | TEST_ASSERT( res == 0 ); |
| 292 | |
| 293 | exit: |
| 294 | mbedtls_x509_crt_free( &x509 ); |
| 295 | mbedtls_free( data ); |
| 296 | mbedtls_pkcs7_free( &pkcs7 ); |
| 297 | mbedtls_free( pkcs7_buf ); |
| 298 | } |
| 299 | /* END_CASE */ |
| 300 | |
| 301 | /* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PKCS1_V15:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 302 | void pkcs7_verify_badcert( char *pkcs7_file, char *crt, char *filetobesigned ) |
| 303 | { |
| 304 | unsigned char *pkcs7_buf = NULL; |
| 305 | size_t buflen; |
| 306 | unsigned char *data = NULL; |
| 307 | struct stat st; |
| 308 | size_t datalen; |
| 309 | int res; |
| 310 | FILE *file; |
| 311 | |
| 312 | mbedtls_pkcs7 pkcs7; |
| 313 | mbedtls_x509_crt x509; |
| 314 | |
| 315 | mbedtls_pkcs7_init( &pkcs7 ); |
| 316 | mbedtls_x509_crt_init( &x509 ); |
| 317 | |
| 318 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 319 | TEST_ASSERT( res == 0 ); |
| 320 | |
| 321 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 322 | TEST_ASSERT( res == 0 ); |
| 323 | |
| 324 | res = mbedtls_x509_crt_parse_file( &x509, crt ); |
| 325 | TEST_ASSERT( res == 0 ); |
| 326 | |
| 327 | res = stat(filetobesigned, &st); |
| 328 | TEST_ASSERT( res == 0 ); |
| 329 | |
| 330 | file = fopen( filetobesigned, "rb" ); |
| 331 | TEST_ASSERT( file != NULL ); |
| 332 | |
| 333 | datalen = st.st_size; |
| 334 | data = mbedtls_calloc( datalen, 1 ); |
| 335 | buflen = fread( ( void * )data , sizeof( unsigned char ), datalen, file ); |
| 336 | TEST_ASSERT( buflen == datalen); |
| 337 | |
| 338 | fclose(file); |
| 339 | |
| 340 | res = mbedtls_pkcs7_signed_data_verify( &pkcs7, &x509, data, datalen ); |
| 341 | TEST_ASSERT( res != 0 ); |
| 342 | |
| 343 | exit: |
| 344 | mbedtls_x509_crt_free( &x509 ); |
| 345 | mbedtls_free( data ); |
| 346 | mbedtls_pkcs7_free( &pkcs7 ); |
| 347 | mbedtls_free( pkcs7_buf ); |
| 348 | } |
| 349 | /* END_CASE */ |
| 350 | |
| 351 | /* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_PKCS1_V15:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_SHA256_C */ |
| 352 | void pkcs7_verify_tampered_data( char *pkcs7_file, char *crt, char *filetobesigned ) |
| 353 | { |
| 354 | unsigned char *pkcs7_buf = NULL; |
| 355 | size_t buflen; |
| 356 | unsigned char *data = NULL; |
| 357 | struct stat st; |
| 358 | size_t datalen; |
| 359 | int res; |
| 360 | FILE *file; |
| 361 | |
| 362 | mbedtls_pkcs7 pkcs7; |
| 363 | mbedtls_x509_crt x509; |
| 364 | |
| 365 | mbedtls_pkcs7_init( &pkcs7 ); |
| 366 | mbedtls_x509_crt_init( &x509 ); |
| 367 | |
| 368 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 369 | TEST_ASSERT( res == 0 ); |
| 370 | |
| 371 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 372 | TEST_ASSERT( res == 0 ); |
| 373 | |
| 374 | res = mbedtls_x509_crt_parse_file( &x509, crt ); |
| 375 | TEST_ASSERT( res == 0 ); |
| 376 | |
| 377 | res = stat(filetobesigned, &st); |
| 378 | TEST_ASSERT( res == 0 ); |
| 379 | |
| 380 | file = fopen( filetobesigned, "rb" ); |
| 381 | TEST_ASSERT( file != NULL ); |
| 382 | |
| 383 | datalen = st.st_size; |
| 384 | data = mbedtls_calloc( datalen, 1 ); |
| 385 | buflen = fread( ( void * )data , sizeof( unsigned char ), datalen, file ); |
| 386 | TEST_ASSERT( buflen == datalen); |
| 387 | |
| 388 | fclose(file); |
| 389 | |
| 390 | res = mbedtls_pkcs7_signed_data_verify( &pkcs7, &x509, data, datalen ); |
| 391 | TEST_ASSERT( res != 0 ); |
| 392 | |
| 393 | exit: |
| 394 | mbedtls_x509_crt_free( &x509 ); |
| 395 | mbedtls_pkcs7_free( &pkcs7 ); |
| 396 | mbedtls_free( data ); |
| 397 | mbedtls_free( pkcs7_buf ); |
| 398 | } |
| 399 | /* END_CASE */ |
| 400 | |
| 401 | /* BEGIN_CASE */ |
| 402 | void pkcs7_parse_failure( char *pkcs7_file ) |
| 403 | { |
| 404 | unsigned char *pkcs7_buf = NULL; |
| 405 | size_t buflen; |
| 406 | int res; |
| 407 | mbedtls_pkcs7 pkcs7; |
| 408 | |
| 409 | mbedtls_pkcs7_init( &pkcs7 ); |
| 410 | |
| 411 | res = mbedtls_pk_load_file( pkcs7_file, &pkcs7_buf, &buflen ); |
| 412 | TEST_ASSERT( res == 0 ); |
| 413 | |
| 414 | res = mbedtls_pkcs7_parse_der( &pkcs7, pkcs7_buf, buflen ); |
| 415 | TEST_ASSERT( res != 0 ); |
| 416 | exit: |
| 417 | mbedtls_free( pkcs7_buf ); |
| 418 | mbedtls_pkcs7_free( &pkcs7 ); |
| 419 | } |
| 420 | /* END_CASE */ |