1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis 2 * 3 * LibTomCrypt is a library that provides various cryptographic 4 * algorithms in a highly modular and flexible manner. 5 * 6 * The library is free for all purposes without any express 7 * guarantee it works. 8 */ 9 10 /* ---- NUMBER THEORY ---- */ 11 12 enum { 13 PK_PUBLIC=0, 14 PK_PRIVATE=1 15 }; 16 17 /* Indicates standard output formats that can be read e.g. by OpenSSL or GnuTLS */ 18 #define PK_STD 0x1000 19 20 int rand_prime(void *N, long len, prng_state *prng, int wprng); 21 22 #ifdef LTC_SOURCE 23 /* internal helper functions */ 24 int rand_bn_bits(void *N, int bits, prng_state *prng, int wprng); 25 int rand_bn_upto(void *N, void *limit, prng_state *prng, int wprng); 26 27 enum public_key_algorithms { 28 PKA_RSA, 29 PKA_DSA 30 }; 31 32 typedef struct Oid { 33 unsigned long OID[16]; 34 /** Number of OID digits in use */ 35 unsigned long OIDlen; 36 } oid_st; 37 38 int pk_get_oid(int pk, oid_st *st); 39 #endif /* LTC_SOURCE */ 40 41 /* ---- RSA ---- */ 42 #ifdef LTC_MRSA 43 44 /** RSA PKCS style key */ 45 typedef struct Rsa_key { 46 /** Type of key, PK_PRIVATE or PK_PUBLIC */ 47 int type; 48 /** The public exponent */ 49 void *e; 50 /** The private exponent */ 51 void *d; 52 /** The modulus */ 53 void *N; 54 /** The p factor of N */ 55 void *p; 56 /** The q factor of N */ 57 void *q; 58 /** The 1/q mod p CRT param */ 59 void *qP; 60 /** The d mod (p - 1) CRT param */ 61 void *dP; 62 /** The d mod (q - 1) CRT param */ 63 void *dQ; 64 } rsa_key; 65 66 int rsa_make_key(prng_state *prng, int wprng, int size, long e, rsa_key *key); 67 68 int rsa_get_size(rsa_key *key); 69 70 int rsa_exptmod(const unsigned char *in, unsigned long inlen, 71 unsigned char *out, unsigned long *outlen, int which, 72 rsa_key *key); 73 74 void rsa_free(rsa_key *key); 75 76 /* These use PKCS #1 v2.0 padding */ 77 #define rsa_encrypt_key(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _prng, _prng_idx, _hash_idx, _key) \ 78 rsa_encrypt_key_ex(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _prng, _prng_idx, _hash_idx, LTC_PKCS_1_OAEP, _key) 79 80 #define rsa_decrypt_key(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _hash_idx, _stat, _key) \ 81 rsa_decrypt_key_ex(_in, _inlen, _out, _outlen, _lparam, _lparamlen, _hash_idx, LTC_PKCS_1_OAEP, _stat, _key) 82 83 #define rsa_sign_hash(_in, _inlen, _out, _outlen, _prng, _prng_idx, _hash_idx, _saltlen, _key) \ 84 rsa_sign_hash_ex(_in, _inlen, _out, _outlen, LTC_PKCS_1_PSS, _prng, _prng_idx, _hash_idx, _saltlen, _key) 85 86 #define rsa_verify_hash(_sig, _siglen, _hash, _hashlen, _hash_idx, _saltlen, _stat, _key) \ 87 rsa_verify_hash_ex(_sig, _siglen, _hash, _hashlen, LTC_PKCS_1_PSS, _hash_idx, _saltlen, _stat, _key) 88 89 #define rsa_sign_saltlen_get_max(_hash_idx, _key) \ 90 rsa_sign_saltlen_get_max_ex(LTC_PKCS_1_PSS, _hash_idx, _key) 91 92 /* These can be switched between PKCS #1 v2.x and PKCS #1 v1.5 paddings */ 93 int rsa_encrypt_key_ex(const unsigned char *in, unsigned long inlen, 94 unsigned char *out, unsigned long *outlen, 95 const unsigned char *lparam, unsigned long lparamlen, 96 prng_state *prng, int prng_idx, int hash_idx, int padding, rsa_key *key); 97 98 int rsa_decrypt_key_ex(const unsigned char *in, unsigned long inlen, 99 unsigned char *out, unsigned long *outlen, 100 const unsigned char *lparam, unsigned long lparamlen, 101 int hash_idx, int padding, 102 int *stat, rsa_key *key); 103 104 int rsa_sign_hash_ex(const unsigned char *in, unsigned long inlen, 105 unsigned char *out, unsigned long *outlen, 106 int padding, 107 prng_state *prng, int prng_idx, 108 int hash_idx, unsigned long saltlen, 109 rsa_key *key); 110 111 int rsa_verify_hash_ex(const unsigned char *sig, unsigned long siglen, 112 const unsigned char *hash, unsigned long hashlen, 113 int padding, 114 int hash_idx, unsigned long saltlen, 115 int *stat, rsa_key *key); 116 117 int rsa_sign_saltlen_get_max_ex(int padding, int hash_idx, rsa_key *key); 118 119 /* PKCS #1 import/export */ 120 int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key); 121 int rsa_import(const unsigned char *in, unsigned long inlen, rsa_key *key); 122 123 int rsa_import_x509(const unsigned char *in, unsigned long inlen, rsa_key *key); 124 int rsa_import_pkcs8(const unsigned char *in, unsigned long inlen, 125 const void *passwd, unsigned long passwdlen, rsa_key *key); 126 127 int rsa_set_key(const unsigned char *N, unsigned long Nlen, 128 const unsigned char *e, unsigned long elen, 129 const unsigned char *d, unsigned long dlen, 130 rsa_key *key); 131 int rsa_set_factors(const unsigned char *p, unsigned long plen, 132 const unsigned char *q, unsigned long qlen, 133 rsa_key *key); 134 int rsa_set_crt_params(const unsigned char *dP, unsigned long dPlen, 135 const unsigned char *dQ, unsigned long dQlen, 136 const unsigned char *qP, unsigned long qPlen, 137 rsa_key *key); 138 #endif 139 140 /* ---- Katja ---- */ 141 #ifdef LTC_MKAT 142 143 /* Min and Max KAT key sizes (in bits) */ 144 #define MIN_KAT_SIZE 1024 145 #define MAX_KAT_SIZE 4096 146 147 /** Katja PKCS style key */ 148 typedef struct KAT_key { 149 /** Type of key, PK_PRIVATE or PK_PUBLIC */ 150 int type; 151 /** The private exponent */ 152 void *d; 153 /** The modulus */ 154 void *N; 155 /** The p factor of N */ 156 void *p; 157 /** The q factor of N */ 158 void *q; 159 /** The 1/q mod p CRT param */ 160 void *qP; 161 /** The d mod (p - 1) CRT param */ 162 void *dP; 163 /** The d mod (q - 1) CRT param */ 164 void *dQ; 165 /** The pq param */ 166 void *pq; 167 } katja_key; 168 169 int katja_make_key(prng_state *prng, int wprng, int size, katja_key *key); 170 171 int katja_exptmod(const unsigned char *in, unsigned long inlen, 172 unsigned char *out, unsigned long *outlen, int which, 173 katja_key *key); 174 175 void katja_free(katja_key *key); 176 177 /* These use PKCS #1 v2.0 padding */ 178 int katja_encrypt_key(const unsigned char *in, unsigned long inlen, 179 unsigned char *out, unsigned long *outlen, 180 const unsigned char *lparam, unsigned long lparamlen, 181 prng_state *prng, int prng_idx, int hash_idx, katja_key *key); 182 183 int katja_decrypt_key(const unsigned char *in, unsigned long inlen, 184 unsigned char *out, unsigned long *outlen, 185 const unsigned char *lparam, unsigned long lparamlen, 186 int hash_idx, int *stat, 187 katja_key *key); 188 189 /* PKCS #1 import/export */ 190 int katja_export(unsigned char *out, unsigned long *outlen, int type, katja_key *key); 191 int katja_import(const unsigned char *in, unsigned long inlen, katja_key *key); 192 193 #endif 194 195 /* ---- DH Routines ---- */ 196 #ifdef LTC_MDH 197 198 typedef struct { 199 int type; 200 void *x; 201 void *y; 202 void *base; 203 void *prime; 204 } dh_key; 205 206 int dh_get_groupsize(dh_key *key); 207 208 int dh_export(unsigned char *out, unsigned long *outlen, int type, dh_key *key); 209 int dh_import(const unsigned char *in, unsigned long inlen, dh_key *key); 210 211 int dh_set_pg(const unsigned char *p, unsigned long plen, 212 const unsigned char *g, unsigned long glen, 213 dh_key *key); 214 int dh_set_pg_dhparam(const unsigned char *dhparam, unsigned long dhparamlen, dh_key *key); 215 int dh_set_pg_groupsize(int groupsize, dh_key *key); 216 217 int dh_set_key(const unsigned char *in, unsigned long inlen, int type, dh_key *key); 218 int dh_generate_key(prng_state *prng, int wprng, dh_key *key); 219 220 int dh_shared_secret(dh_key *private_key, dh_key *public_key, 221 unsigned char *out, unsigned long *outlen); 222 223 void dh_free(dh_key *key); 224 225 int dh_export_key(void *out, unsigned long *outlen, int type, dh_key *key); 226 227 #ifdef LTC_SOURCE 228 typedef struct { 229 int size; 230 const char *name, *base, *prime; 231 } ltc_dh_set_type; 232 233 extern const ltc_dh_set_type ltc_dh_sets[]; 234 235 /* internal helper functions */ 236 int dh_check_pubkey(dh_key *key); 237 #endif 238 239 #endif /* LTC_MDH */ 240 241 242 /* ---- ECC Routines ---- */ 243 #ifdef LTC_MECC 244 245 /* size of our temp buffers for exported keys */ 246 #define ECC_BUF_SIZE 256 247 248 /* max private key size */ 249 #define ECC_MAXSIZE 66 250 251 /** Structure defines a NIST GF(p) curve */ 252 typedef struct { 253 /** The size of the curve in octets */ 254 int size; 255 256 /** name of curve */ 257 const char *name; 258 259 /** The prime that defines the field the curve is in (encoded in hex) */ 260 const char *prime; 261 262 /** The fields B param (hex) */ 263 const char *B; 264 265 /** The order of the curve (hex) */ 266 const char *order; 267 268 /** The x co-ordinate of the base point on the curve (hex) */ 269 const char *Gx; 270 271 /** The y co-ordinate of the base point on the curve (hex) */ 272 const char *Gy; 273 } ltc_ecc_set_type; 274 275 /** A point on a ECC curve, stored in Jacbobian format such that (x,y,z) => (x/z^2, y/z^3, 1) when interpretted as affine */ 276 typedef struct { 277 /** The x co-ordinate */ 278 void *x; 279 280 /** The y co-ordinate */ 281 void *y; 282 283 /** The z co-ordinate */ 284 void *z; 285 } ecc_point; 286 287 /** An ECC key */ 288 typedef struct { 289 /** Type of key, PK_PRIVATE or PK_PUBLIC */ 290 int type; 291 292 /** Index into the ltc_ecc_sets[] for the parameters of this curve; if -1, then this key is using user supplied curve in dp */ 293 int idx; 294 295 /** pointer to domain parameters; either points to NIST curves (identified by idx >= 0) or user supplied curve */ 296 const ltc_ecc_set_type *dp; 297 298 /** The public key */ 299 ecc_point pubkey; 300 301 /** The private key */ 302 void *k; 303 } ecc_key; 304 305 /** the ECC params provided */ 306 extern const ltc_ecc_set_type ltc_ecc_sets[]; 307 308 int ecc_test(void); 309 void ecc_sizes(int *low, int *high); 310 int ecc_get_size(ecc_key *key); 311 312 int ecc_make_key(prng_state *prng, int wprng, int keysize, ecc_key *key); 313 int ecc_make_key_ex(prng_state *prng, int wprng, ecc_key *key, const ltc_ecc_set_type *dp); 314 void ecc_free(ecc_key *key); 315 316 int ecc_export(unsigned char *out, unsigned long *outlen, int type, ecc_key *key); 317 int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key); 318 int ecc_import_ex(const unsigned char *in, unsigned long inlen, ecc_key *key, const ltc_ecc_set_type *dp); 319 320 int ecc_ansi_x963_export(ecc_key *key, unsigned char *out, unsigned long *outlen); 321 int ecc_ansi_x963_import(const unsigned char *in, unsigned long inlen, ecc_key *key); 322 int ecc_ansi_x963_import_ex(const unsigned char *in, unsigned long inlen, ecc_key *key, ltc_ecc_set_type *dp); 323 324 int ecc_shared_secret(ecc_key *private_key, ecc_key *public_key, 325 unsigned char *out, unsigned long *outlen); 326 327 int ecc_encrypt_key(const unsigned char *in, unsigned long inlen, 328 unsigned char *out, unsigned long *outlen, 329 prng_state *prng, int wprng, int hash, 330 ecc_key *key); 331 332 int ecc_decrypt_key(const unsigned char *in, unsigned long inlen, 333 unsigned char *out, unsigned long *outlen, 334 ecc_key *key); 335 336 int ecc_sign_hash_rfc7518(const unsigned char *in, unsigned long inlen, 337 unsigned char *out, unsigned long *outlen, 338 prng_state *prng, int wprng, ecc_key *key); 339 340 int ecc_sign_hash(const unsigned char *in, unsigned long inlen, 341 unsigned char *out, unsigned long *outlen, 342 prng_state *prng, int wprng, ecc_key *key); 343 344 int ecc_verify_hash_rfc7518(const unsigned char *sig, unsigned long siglen, 345 const unsigned char *hash, unsigned long hashlen, 346 int *stat, ecc_key *key); 347 348 int ecc_verify_hash(const unsigned char *sig, unsigned long siglen, 349 const unsigned char *hash, unsigned long hashlen, 350 int *stat, ecc_key *key); 351 352 /* low level functions */ 353 ecc_point *ltc_ecc_new_point(void); 354 void ltc_ecc_del_point(ecc_point *p); 355 int ltc_ecc_is_valid_idx(int n); 356 357 /* point ops (mp == montgomery digit) */ 358 #if !defined(LTC_MECC_ACCEL) || defined(LTM_DESC) || defined(GMP_DESC) 359 /* R = 2P */ 360 int ltc_ecc_projective_dbl_point(ecc_point *P, ecc_point *R, void *modulus, void *mp); 361 362 /* R = P + Q */ 363 int ltc_ecc_projective_add_point(ecc_point *P, ecc_point *Q, ecc_point *R, void *modulus, void *mp); 364 #endif 365 366 #if defined(LTC_MECC_FP) 367 /* optimized point multiplication using fixed point cache (HAC algorithm 14.117) */ 368 int ltc_ecc_fp_mulmod(void *k, ecc_point *G, ecc_point *R, void *modulus, int map); 369 370 /* functions for saving/loading/freeing/adding to fixed point cache */ 371 int ltc_ecc_fp_save_state(unsigned char **out, unsigned long *outlen); 372 int ltc_ecc_fp_restore_state(unsigned char *in, unsigned long inlen); 373 void ltc_ecc_fp_free(void); 374 int ltc_ecc_fp_add_point(ecc_point *g, void *modulus, int lock); 375 376 /* lock/unlock all points currently in fixed point cache */ 377 void ltc_ecc_fp_tablelock(int lock); 378 #endif 379 380 /* R = kG */ 381 int ltc_ecc_mulmod(void *k, ecc_point *G, ecc_point *R, void *modulus, int map); 382 383 #ifdef LTC_ECC_SHAMIR 384 /* kA*A + kB*B = C */ 385 int ltc_ecc_mul2add(ecc_point *A, void *kA, 386 ecc_point *B, void *kB, 387 ecc_point *C, 388 void *modulus); 389 390 #ifdef LTC_MECC_FP 391 /* Shamir's trick with optimized point multiplication using fixed point cache */ 392 int ltc_ecc_fp_mul2add(ecc_point *A, void *kA, 393 ecc_point *B, void *kB, 394 ecc_point *C, void *modulus); 395 #endif 396 397 #endif 398 399 400 /* map P to affine from projective */ 401 int ltc_ecc_map(ecc_point *P, void *modulus, void *mp); 402 403 #endif 404 405 #ifdef LTC_MDSA 406 407 /* Max diff between group and modulus size in bytes */ 408 #define LTC_MDSA_DELTA 512 409 410 /* Max DSA group size in bytes (default allows 4k-bit groups) */ 411 #define LTC_MDSA_MAX_GROUP 512 412 413 /** DSA key structure */ 414 typedef struct { 415 /** The key type, PK_PRIVATE or PK_PUBLIC */ 416 int type; 417 418 /** The order of the sub-group used in octets */ 419 int qord; 420 421 /** The generator */ 422 void *g; 423 424 /** The prime used to generate the sub-group */ 425 void *q; 426 427 /** The large prime that generats the field the contains the sub-group */ 428 void *p; 429 430 /** The private key */ 431 void *x; 432 433 /** The public key */ 434 void *y; 435 } dsa_key; 436 437 int dsa_make_key(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key); 438 439 int dsa_set_pqg(const unsigned char *p, unsigned long plen, 440 const unsigned char *q, unsigned long qlen, 441 const unsigned char *g, unsigned long glen, 442 dsa_key *key); 443 int dsa_set_pqg_dsaparam(const unsigned char *dsaparam, unsigned long dsaparamlen, dsa_key *key); 444 int dsa_generate_pqg(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key); 445 446 int dsa_set_key(const unsigned char *in, unsigned long inlen, int type, dsa_key *key); 447 int dsa_generate_key(prng_state *prng, int wprng, dsa_key *key); 448 449 void dsa_free(dsa_key *key); 450 451 int dsa_sign_hash_raw(const unsigned char *in, unsigned long inlen, 452 void *r, void *s, 453 prng_state *prng, int wprng, dsa_key *key); 454 455 int dsa_sign_hash(const unsigned char *in, unsigned long inlen, 456 unsigned char *out, unsigned long *outlen, 457 prng_state *prng, int wprng, dsa_key *key); 458 459 int dsa_verify_hash_raw( void *r, void *s, 460 const unsigned char *hash, unsigned long hashlen, 461 int *stat, dsa_key *key); 462 463 int dsa_verify_hash(const unsigned char *sig, unsigned long siglen, 464 const unsigned char *hash, unsigned long hashlen, 465 int *stat, dsa_key *key); 466 467 int dsa_encrypt_key(const unsigned char *in, unsigned long inlen, 468 unsigned char *out, unsigned long *outlen, 469 prng_state *prng, int wprng, int hash, 470 dsa_key *key); 471 472 int dsa_decrypt_key(const unsigned char *in, unsigned long inlen, 473 unsigned char *out, unsigned long *outlen, 474 dsa_key *key); 475 476 int dsa_import(const unsigned char *in, unsigned long inlen, dsa_key *key); 477 int dsa_export(unsigned char *out, unsigned long *outlen, int type, dsa_key *key); 478 int dsa_verify_key(dsa_key *key, int *stat); 479 #ifdef LTC_SOURCE 480 /* internal helper functions */ 481 int dsa_int_validate_xy(dsa_key *key, int *stat); 482 int dsa_int_validate_pqg(dsa_key *key, int *stat); 483 int dsa_int_validate_primes(dsa_key *key, int *stat); 484 #endif 485 int dsa_shared_secret(void *private_key, void *base, 486 dsa_key *public_key, 487 unsigned char *out, unsigned long *outlen); 488 #endif 489 490 #ifdef LTC_DER 491 /* DER handling */ 492 493 typedef enum ltc_asn1_type_ { 494 /* 0 */ 495 LTC_ASN1_EOL, 496 LTC_ASN1_BOOLEAN, 497 LTC_ASN1_INTEGER, 498 LTC_ASN1_SHORT_INTEGER, 499 LTC_ASN1_BIT_STRING, 500 /* 5 */ 501 LTC_ASN1_OCTET_STRING, 502 LTC_ASN1_NULL, 503 LTC_ASN1_OBJECT_IDENTIFIER, 504 LTC_ASN1_IA5_STRING, 505 LTC_ASN1_PRINTABLE_STRING, 506 /* 10 */ 507 LTC_ASN1_UTF8_STRING, 508 LTC_ASN1_UTCTIME, 509 LTC_ASN1_CHOICE, 510 LTC_ASN1_SEQUENCE, 511 LTC_ASN1_SET, 512 /* 15 */ 513 LTC_ASN1_SETOF, 514 LTC_ASN1_RAW_BIT_STRING, 515 LTC_ASN1_TELETEX_STRING, 516 LTC_ASN1_CONSTRUCTED, 517 LTC_ASN1_CONTEXT_SPECIFIC, 518 /* 20 */ 519 LTC_ASN1_GENERALIZEDTIME, 520 } ltc_asn1_type; 521 522 /** A LTC ASN.1 list type */ 523 typedef struct ltc_asn1_list_ { 524 /** The LTC ASN.1 enumerated type identifier */ 525 ltc_asn1_type type; 526 /** The data to encode or place for decoding */ 527 void *data; 528 /** The size of the input or resulting output */ 529 unsigned long size; 530 /** The used flag, this is used by the CHOICE ASN.1 type to indicate which choice was made */ 531 int used; 532 /** prev/next entry in the list */ 533 struct ltc_asn1_list_ *prev, *next, *child, *parent; 534 } ltc_asn1_list; 535 536 #define LTC_SET_ASN1(list, index, Type, Data, Size) \ 537 do { \ 538 int LTC_MACRO_temp = (index); \ 539 ltc_asn1_list *LTC_MACRO_list = (list); \ 540 LTC_MACRO_list[LTC_MACRO_temp].type = (Type); \ 541 LTC_MACRO_list[LTC_MACRO_temp].data = (void*)(Data); \ 542 LTC_MACRO_list[LTC_MACRO_temp].size = (Size); \ 543 LTC_MACRO_list[LTC_MACRO_temp].used = 0; \ 544 } while (0) 545 546 /* SEQUENCE */ 547 int der_encode_sequence_ex(ltc_asn1_list *list, unsigned long inlen, 548 unsigned char *out, unsigned long *outlen, int type_of); 549 550 #define der_encode_sequence(list, inlen, out, outlen) der_encode_sequence_ex(list, inlen, out, outlen, LTC_ASN1_SEQUENCE) 551 552 int der_decode_sequence_ex(const unsigned char *in, unsigned long inlen, 553 ltc_asn1_list *list, unsigned long outlen, int ordered); 554 555 #define der_decode_sequence(in, inlen, list, outlen) der_decode_sequence_ex(in, inlen, list, outlen, 1) 556 557 int der_length_sequence(ltc_asn1_list *list, unsigned long inlen, 558 unsigned long *outlen); 559 560 561 #ifdef LTC_SOURCE 562 /* internal helper functions */ 563 int der_length_sequence_ex(ltc_asn1_list *list, unsigned long inlen, 564 unsigned long *outlen, unsigned long *payloadlen); 565 /* SUBJECT PUBLIC KEY INFO */ 566 int der_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen, 567 unsigned int algorithm, void* public_key, unsigned long public_key_len, 568 unsigned long parameters_type, void* parameters, unsigned long parameters_len); 569 570 int der_decode_subject_public_key_info(const unsigned char *in, unsigned long inlen, 571 unsigned int algorithm, void* public_key, unsigned long* public_key_len, 572 unsigned long parameters_type, ltc_asn1_list* parameters, unsigned long parameters_len); 573 #endif /* LTC_SOURCE */ 574 575 /* SET */ 576 #define der_decode_set(in, inlen, list, outlen) der_decode_sequence_ex(in, inlen, list, outlen, 0) 577 #define der_length_set der_length_sequence 578 int der_encode_set(ltc_asn1_list *list, unsigned long inlen, 579 unsigned char *out, unsigned long *outlen); 580 581 int der_encode_setof(ltc_asn1_list *list, unsigned long inlen, 582 unsigned char *out, unsigned long *outlen); 583 584 /* VA list handy helpers with triplets of <type, size, data> */ 585 int der_encode_sequence_multi(unsigned char *out, unsigned long *outlen, ...); 586 int der_decode_sequence_multi(const unsigned char *in, unsigned long inlen, ...); 587 588 /* FLEXI DECODER handle unknown list decoder */ 589 int der_decode_sequence_flexi(const unsigned char *in, unsigned long *inlen, ltc_asn1_list **out); 590 #define der_free_sequence_flexi der_sequence_free 591 void der_sequence_free(ltc_asn1_list *in); 592 void der_sequence_shrink(ltc_asn1_list *in); 593 594 /* BOOLEAN */ 595 int der_length_boolean(unsigned long *outlen); 596 int der_encode_boolean(int in, 597 unsigned char *out, unsigned long *outlen); 598 int der_decode_boolean(const unsigned char *in, unsigned long inlen, 599 int *out); 600 /* INTEGER */ 601 int der_encode_integer(void *num, unsigned char *out, unsigned long *outlen); 602 int der_decode_integer(const unsigned char *in, unsigned long inlen, void *num); 603 int der_length_integer(void *num, unsigned long *len); 604 605 /* INTEGER -- handy for 0..2^32-1 values */ 606 int der_decode_short_integer(const unsigned char *in, unsigned long inlen, unsigned long *num); 607 int der_encode_short_integer(unsigned long num, unsigned char *out, unsigned long *outlen); 608 int der_length_short_integer(unsigned long num, unsigned long *outlen); 609 610 /* BIT STRING */ 611 int der_encode_bit_string(const unsigned char *in, unsigned long inlen, 612 unsigned char *out, unsigned long *outlen); 613 int der_decode_bit_string(const unsigned char *in, unsigned long inlen, 614 unsigned char *out, unsigned long *outlen); 615 int der_encode_raw_bit_string(const unsigned char *in, unsigned long inlen, 616 unsigned char *out, unsigned long *outlen); 617 int der_decode_raw_bit_string(const unsigned char *in, unsigned long inlen, 618 unsigned char *out, unsigned long *outlen); 619 int der_length_bit_string(unsigned long nbits, unsigned long *outlen); 620 621 /* OCTET STRING */ 622 int der_encode_octet_string(const unsigned char *in, unsigned long inlen, 623 unsigned char *out, unsigned long *outlen); 624 int der_decode_octet_string(const unsigned char *in, unsigned long inlen, 625 unsigned char *out, unsigned long *outlen); 626 int der_length_octet_string(unsigned long noctets, unsigned long *outlen); 627 628 /* OBJECT IDENTIFIER */ 629 int der_encode_object_identifier(unsigned long *words, unsigned long nwords, 630 unsigned char *out, unsigned long *outlen); 631 int der_decode_object_identifier(const unsigned char *in, unsigned long inlen, 632 unsigned long *words, unsigned long *outlen); 633 int der_length_object_identifier(unsigned long *words, unsigned long nwords, unsigned long *outlen); 634 unsigned long der_object_identifier_bits(unsigned long x); 635 636 /* IA5 STRING */ 637 int der_encode_ia5_string(const unsigned char *in, unsigned long inlen, 638 unsigned char *out, unsigned long *outlen); 639 int der_decode_ia5_string(const unsigned char *in, unsigned long inlen, 640 unsigned char *out, unsigned long *outlen); 641 int der_length_ia5_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen); 642 643 int der_ia5_char_encode(int c); 644 int der_ia5_value_decode(int v); 645 646 /* TELETEX STRING */ 647 int der_decode_teletex_string(const unsigned char *in, unsigned long inlen, 648 unsigned char *out, unsigned long *outlen); 649 int der_length_teletex_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen); 650 651 #ifdef LTC_SOURCE 652 /* internal helper functions */ 653 int der_teletex_char_encode(int c); 654 int der_teletex_value_decode(int v); 655 #endif /* LTC_SOURCE */ 656 657 658 /* PRINTABLE STRING */ 659 int der_encode_printable_string(const unsigned char *in, unsigned long inlen, 660 unsigned char *out, unsigned long *outlen); 661 int der_decode_printable_string(const unsigned char *in, unsigned long inlen, 662 unsigned char *out, unsigned long *outlen); 663 int der_length_printable_string(const unsigned char *octets, unsigned long noctets, unsigned long *outlen); 664 665 int der_printable_char_encode(int c); 666 int der_printable_value_decode(int v); 667 668 /* UTF-8 */ 669 #if (defined(SIZE_MAX) || __STDC_VERSION__ >= 199901L || defined(WCHAR_MAX) || defined(__WCHAR_MAX__) || defined(_WCHAR_T) || defined(_WCHAR_T_DEFINED) || defined (__WCHAR_TYPE__)) && !defined(LTC_NO_WCHAR) 670 #if defined(__WCHAR_MAX__) 671 #define LTC_WCHAR_MAX __WCHAR_MAX__ 672 #else 673 #include <wchar.h> 674 #define LTC_WCHAR_MAX WCHAR_MAX 675 #endif 676 /* please note that it might happen that LTC_WCHAR_MAX is undefined */ 677 #else 678 typedef ulong32 wchar_t; 679 #define LTC_WCHAR_MAX 0xFFFFFFFF 680 #endif 681 682 int der_encode_utf8_string(const wchar_t *in, unsigned long inlen, 683 unsigned char *out, unsigned long *outlen); 684 685 int der_decode_utf8_string(const unsigned char *in, unsigned long inlen, 686 wchar_t *out, unsigned long *outlen); 687 unsigned long der_utf8_charsize(const wchar_t c); 688 #ifdef LTC_SOURCE 689 /* internal helper functions */ 690 int der_utf8_valid_char(const wchar_t c); 691 #endif /* LTC_SOURCE */ 692 int der_length_utf8_string(const wchar_t *in, unsigned long noctets, unsigned long *outlen); 693 694 695 /* CHOICE */ 696 int der_decode_choice(const unsigned char *in, unsigned long *inlen, 697 ltc_asn1_list *list, unsigned long outlen); 698 699 /* UTCTime */ 700 typedef struct { 701 unsigned YY, /* year */ 702 MM, /* month */ 703 DD, /* day */ 704 hh, /* hour */ 705 mm, /* minute */ 706 ss, /* second */ 707 off_dir, /* timezone offset direction 0 == +, 1 == - */ 708 off_hh, /* timezone offset hours */ 709 off_mm; /* timezone offset minutes */ 710 } ltc_utctime; 711 712 int der_encode_utctime(ltc_utctime *utctime, 713 unsigned char *out, unsigned long *outlen); 714 715 int der_decode_utctime(const unsigned char *in, unsigned long *inlen, 716 ltc_utctime *out); 717 718 int der_length_utctime(ltc_utctime *utctime, unsigned long *outlen); 719 720 /* GeneralizedTime */ 721 typedef struct { 722 unsigned YYYY, /* year */ 723 MM, /* month */ 724 DD, /* day */ 725 hh, /* hour */ 726 mm, /* minute */ 727 ss, /* second */ 728 fs, /* fractional seconds */ 729 off_dir, /* timezone offset direction 0 == +, 1 == - */ 730 off_hh, /* timezone offset hours */ 731 off_mm; /* timezone offset minutes */ 732 } ltc_generalizedtime; 733 734 int der_encode_generalizedtime(ltc_generalizedtime *gtime, 735 unsigned char *out, unsigned long *outlen); 736 737 int der_decode_generalizedtime(const unsigned char *in, unsigned long *inlen, 738 ltc_generalizedtime *out); 739 740 int der_length_generalizedtime(ltc_generalizedtime *gtime, unsigned long *outlen); 741 742 743 #endif 744 745 /* ref: $Format:%D$ */ 746 /* git commit: $Format:%H$ */ 747 /* commit time: $Format:%ai$ */ 748