| /* SPDX-License-Identifier: BSD-2-Clause */ |
| /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
| * |
| * LibTomCrypt is a library that provides various cryptographic |
| * algorithms in a highly modular and flexible manner. |
| * |
| * The library is free for all purposes without any express |
| * guarantee it works. |
| */ |
| |
| #include "tomcrypt.h" |
| |
| /* |
| * Internal Macros |
| */ |
| |
| #define LTC_PAD_MASK (0xF000U) |
| |
| /* |
| * Internal Enums |
| */ |
| |
| enum ltc_oid_id { |
| PKA_RSA, |
| PKA_DSA, |
| PKA_EC, |
| PKA_EC_PRIMEF, |
| PKA_X25519, |
| PKA_ED25519, |
| }; |
| |
| /* |
| * Internal Types |
| */ |
| |
| typedef struct { |
| int size; |
| const char *name, *base, *prime; |
| } ltc_dh_set_type; |
| |
| |
| typedef int (*fn_kdf_t)(const unsigned char *password, unsigned long password_len, |
| const unsigned char *salt, unsigned long salt_len, |
| int iteration_count, int hash_idx, |
| unsigned char *out, unsigned long *outlen); |
| |
| typedef struct { |
| /* KDF */ |
| fn_kdf_t kdf; |
| /* Hash or HMAC */ |
| const char* h; |
| /* cipher */ |
| const char* c; |
| unsigned long keylen; |
| /* not used for pbkdf2 */ |
| unsigned long blocklen; |
| } pbes_properties; |
| |
| typedef struct |
| { |
| pbes_properties type; |
| const void *pwd; |
| unsigned long pwdlen; |
| ltc_asn1_list *enc_data; |
| ltc_asn1_list *salt; |
| ltc_asn1_list *iv; |
| unsigned long iterations; |
| /* only used for RC2 */ |
| unsigned long key_bits; |
| } pbes_arg; |
| |
| /* |
| * Internal functions |
| */ |
| |
| /* tomcrypt_hash.h */ |
| |
| /* a macro for making hash "process" functions */ |
| #define HASH_PROCESS_(func_name, compress_name, compress_n_name, state_var, block_size) \ |
| int func_name (hash_state * md, const unsigned char *in, unsigned long inlen) \ |
| { \ |
| unsigned long n, blocks; \ |
| int err; \ |
| int (*compress)(hash_state *, const unsigned char *) = compress_name; \ |
| int (*compress_n)(hash_state *, const unsigned char *, int) = compress_n_name;\ |
| LTC_ARGCHK(md != NULL); \ |
| LTC_ARGCHK(in != NULL); \ |
| if (md-> state_var .curlen > sizeof(md-> state_var .buf)) { \ |
| return CRYPT_INVALID_ARG; \ |
| } \ |
| if ((md-> state_var .length + inlen) < md-> state_var .length) { \ |
| return CRYPT_HASH_OVERFLOW; \ |
| } \ |
| while (inlen > 0) { \ |
| if (md-> state_var .curlen == 0 && inlen >= block_size) { \ |
| if (compress_n) { \ |
| blocks = inlen / block_size; \ |
| err = compress_n (md, in, blocks); \ |
| } else { \ |
| blocks = 1; \ |
| err = compress (md, in); \ |
| } \ |
| if (err != CRYPT_OK) \ |
| return err; \ |
| md-> state_var .length += blocks * block_size * 8; \ |
| in += blocks * block_size; \ |
| inlen -= blocks * block_size; \ |
| } else { \ |
| n = MIN(inlen, (block_size - md-> state_var .curlen)); \ |
| XMEMCPY(md-> state_var .buf + md-> state_var.curlen, in, (size_t)n); \ |
| md-> state_var .curlen += n; \ |
| in += n; \ |
| inlen -= n; \ |
| if (md-> state_var .curlen == block_size) { \ |
| if (compress_n) { \ |
| err = compress_n (md, md-> state_var .buf, 1); \ |
| } else { \ |
| err = compress (md, md-> state_var .buf); \ |
| } \ |
| if (err != CRYPT_OK) { \ |
| return err; \ |
| } \ |
| md-> state_var .length += 8*block_size; \ |
| md-> state_var .curlen = 0; \ |
| } \ |
| } \ |
| } \ |
| return CRYPT_OK; \ |
| } |
| |
| /* define a hash "process" function based on a 1-block compress function */ |
| #define HASH_PROCESS(func_name, compress_name, state_var, block_size) \ |
| HASH_PROCESS_(func_name, compress_name, NULL, state_var, block_size) |
| |
| /* define a hash "process" function based on a n-block compress function */ |
| #define HASH_PROCESS_NBLOCKS(func_name, compress_n_name, state_var, block_size) \ |
| HASH_PROCESS_(func_name, NULL, compress_n_name, state_var, block_size) |
| |
| |
| /* tomcrypt_mac.h */ |
| |
| int ocb3_int_ntz(unsigned long x); |
| void ocb3_int_xor_blocks(unsigned char *out, const unsigned char *block_a, const unsigned char *block_b, unsigned long block_len); |
| |
| |
| /* tomcrypt_math.h */ |
| |
| #if !defined(DESC_DEF_ONLY) |
| |
| #define MP_DIGIT_BIT ltc_mp.bits_per_digit |
| |
| /* some handy macros */ |
| #define mp_init(a) ltc_mp.init(a) |
| #define mp_init_multi ltc_init_multi |
| #define mp_init_size(a, b) ltc_mp.init_size(a, b) |
| #define mp_init_multi_size ltc_init_multi_size |
| #define mp_clear(a) ltc_mp.deinit(a) |
| #define mp_clear_multi ltc_deinit_multi |
| #define mp_cleanup_multi ltc_cleanup_multi |
| #define mp_init_copy(a, b) ltc_mp.init_copy(a, b) |
| |
| #define mp_neg(a, b) ltc_mp.neg(a, b) |
| #define mp_copy(a, b) ltc_mp.copy(a, b) |
| |
| #define mp_set(a, b) ltc_mp.set_int(a, b) |
| #define mp_set_int(a, b) ltc_mp.set_int(a, b) |
| #define mp_get_int(a) ltc_mp.get_int(a) |
| #define mp_get_digit(a, n) ltc_mp.get_digit(a, n) |
| #define mp_get_digit_count(a) ltc_mp.get_digit_count(a) |
| #define mp_cmp(a, b) ltc_mp.compare(a, b) |
| #define mp_cmp_d(a, b) ltc_mp.compare_d(a, b) |
| #define mp_count_bits(a) ltc_mp.count_bits(a) |
| #define mp_cnt_lsb(a) ltc_mp.count_lsb_bits(a) |
| #define mp_2expt(a, b) ltc_mp.twoexpt(a, b) |
| |
| #define mp_read_radix(a, b, c) ltc_mp.read_radix(a, b, c) |
| #define mp_toradix(a, b, c) ltc_mp.write_radix(a, b, c) |
| #define mp_unsigned_bin_size(a) ltc_mp.unsigned_size(a) |
| #define mp_to_unsigned_bin(a, b) ltc_mp.unsigned_write(a, b) |
| #define mp_read_unsigned_bin(a, b, c) ltc_mp.unsigned_read(a, b, c) |
| |
| #define mp_add(a, b, c) ltc_mp.add(a, b, c) |
| #define mp_add_d(a, b, c) ltc_mp.addi(a, b, c) |
| #define mp_sub(a, b, c) ltc_mp.sub(a, b, c) |
| #define mp_sub_d(a, b, c) ltc_mp.subi(a, b, c) |
| #define mp_mul(a, b, c) ltc_mp.mul(a, b, c) |
| #define mp_mul_d(a, b, c) ltc_mp.muli(a, b, c) |
| #define mp_sqr(a, b) ltc_mp.sqr(a, b) |
| #define mp_sqrtmod_prime(a, b, c) ltc_mp.sqrtmod_prime(a, b, c) |
| #define mp_div(a, b, c, d) ltc_mp.mpdiv(a, b, c, d) |
| #define mp_div_2(a, b) ltc_mp.div_2(a, b) |
| #define mp_mod(a, b, c) ltc_mp.mpdiv(a, b, NULL, c) |
| #define mp_mod_d(a, b, c) ltc_mp.modi(a, b, c) |
| #define mp_gcd(a, b, c) ltc_mp.gcd(a, b, c) |
| #define mp_lcm(a, b, c) ltc_mp.lcm(a, b, c) |
| |
| #define mp_addmod(a, b, c, d) ltc_mp.addmod(a, b, c, d) |
| #define mp_submod(a, b, c, d) ltc_mp.submod(a, b, c, d) |
| #define mp_mulmod(a, b, c, d) ltc_mp.mulmod(a, b, c, d) |
| #define mp_sqrmod(a, b, c) ltc_mp.sqrmod(a, b, c) |
| #define mp_invmod(a, b, c) ltc_mp.invmod(a, b, c) |
| |
| #define mp_montgomery_setup(a, b) ltc_mp.montgomery_setup(a, b) |
| #define mp_montgomery_normalization(a, b) ltc_mp.montgomery_normalization(a, b) |
| #define mp_montgomery_reduce(a, b, c) ltc_mp.montgomery_reduce(a, b, c) |
| #define mp_montgomery_free(a) ltc_mp.montgomery_deinit(a) |
| |
| #define mp_exptmod(a,b,c,d) ltc_mp.exptmod(a,b,c,d) |
| #define mp_prime_is_prime(a, b, c) ltc_mp.isprime(a, b, c) |
| |
| #define mp_iszero(a) (mp_cmp_d(a, 0) == LTC_MP_EQ ? LTC_MP_YES : LTC_MP_NO) |
| #define mp_isodd(a) (mp_get_digit_count(a) > 0 ? (mp_get_digit(a, 0) & 1 ? LTC_MP_YES : LTC_MP_NO) : LTC_MP_NO) |
| #define mp_exch(a, b) do { void *ABC__tmp = a; a = b; b = ABC__tmp; } while(0) |
| |
| #define mp_tohex(a, b) mp_toradix(a, b, 16) |
| |
| #define mp_rand(a, b) ltc_mp.rand(a, b) |
| |
| #endif |
| |
| |
| /* tomcrypt_misc.h */ |
| |
| void copy_or_zeromem(const unsigned char* src, unsigned char* dest, unsigned long len, int coz); |
| |
| int pbes_decrypt(const pbes_arg *arg, unsigned char *dec_data, unsigned long *dec_size); |
| |
| int pbes1_extract(const ltc_asn1_list *s, pbes_arg *res); |
| int pbes2_extract(const ltc_asn1_list *s, pbes_arg *res); |
| |
| |
| /* tomcrypt_pk.h */ |
| |
| int rand_bn_bits(void *N, int bits, prng_state *prng, int wprng); |
| int rand_bn_upto(void *N, void *limit, prng_state *prng, int wprng); |
| |
| int pk_get_oid(enum ltc_oid_id id, const char **st); |
| int pk_oid_str_to_num(const char *OID, unsigned long *oid, unsigned long *oidlen); |
| int pk_oid_num_to_str(const unsigned long *oid, unsigned long oidlen, char *OID, unsigned long *outlen); |
| |
| /* ---- DH Routines ---- */ |
| #ifdef LTC_MDH |
| extern const ltc_dh_set_type ltc_dh_sets[]; |
| |
| int dh_check_pubkey(const dh_key *key); |
| #endif /* LTC_MDH */ |
| |
| /* ---- ECC Routines ---- */ |
| #ifdef LTC_MECC |
| int ecc_set_curve_from_mpis(void *a, void *b, void *prime, void *order, void *gx, void *gy, unsigned long cofactor, ecc_key *key); |
| int ecc_copy_curve(const ecc_key *srckey, ecc_key *key); |
| int ecc_set_curve_by_size(int size, ecc_key *key); |
| int ecc_import_subject_public_key_info(const unsigned char *in, unsigned long inlen, ecc_key *key); |
| |
| #ifdef LTC_SSH |
| int ecc_ssh_ecdsa_encode_name(char *buffer, unsigned long *buflen, const ecc_key *key); |
| #endif |
| |
| /* low level functions */ |
| ecc_point *ltc_ecc_new_point(void); |
| void ltc_ecc_del_point(ecc_point *p); |
| int ltc_ecc_set_point_xyz(ltc_mp_digit x, ltc_mp_digit y, ltc_mp_digit z, ecc_point *p); |
| int ltc_ecc_copy_point(const ecc_point *src, ecc_point *dst); |
| int ltc_ecc_is_point(const ltc_ecc_dp *dp, void *x, void *y); |
| int ltc_ecc_is_point_at_infinity(const ecc_point *P, void *modulus, int *retval); |
| int ltc_ecc_import_point(const unsigned char *in, unsigned long inlen, void *prime, void *a, void *b, void *x, void *y); |
| int ltc_ecc_export_point(unsigned char *out, unsigned long *outlen, void *x, void *y, unsigned long size, int compressed); |
| int ltc_ecc_verify_key(const ecc_key *key); |
| |
| /* point ops (mp == montgomery digit) */ |
| #if !defined(LTC_MECC_ACCEL) || defined(LTM_DESC) || defined(GMP_DESC) |
| /* R = 2P */ |
| int ltc_ecc_projective_dbl_point(const ecc_point *P, ecc_point *R, void *ma, void *modulus, void *mp); |
| |
| /* R = P + Q */ |
| int ltc_ecc_projective_add_point(const ecc_point *P, const ecc_point *Q, ecc_point *R, void *ma, void *modulus, void *mp); |
| #endif |
| |
| #if defined(LTC_MECC_FP) |
| /* optimized point multiplication using fixed point cache (HAC algorithm 14.117) */ |
| int ltc_ecc_fp_mulmod(void *k, ecc_point *G, ecc_point *R, void *a, void *modulus, int map); |
| |
| /* functions for saving/loading/freeing/adding to fixed point cache */ |
| int ltc_ecc_fp_save_state(unsigned char **out, unsigned long *outlen); |
| int ltc_ecc_fp_restore_state(unsigned char *in, unsigned long inlen); |
| void ltc_ecc_fp_free(void); |
| int ltc_ecc_fp_add_point(ecc_point *g, void *modulus, int lock); |
| |
| /* lock/unlock all points currently in fixed point cache */ |
| void ltc_ecc_fp_tablelock(int lock); |
| #endif |
| |
| /* R = kG */ |
| int ltc_ecc_mulmod(void *k, const ecc_point *G, ecc_point *R, void *a, void *modulus, int map); |
| |
| #ifdef LTC_ECC_SHAMIR |
| /* kA*A + kB*B = C */ |
| int ltc_ecc_mul2add(const ecc_point *A, void *kA, |
| const ecc_point *B, void *kB, |
| ecc_point *C, |
| void *ma, |
| void *modulus); |
| |
| #ifdef LTC_MECC_FP |
| /* Shamir's trick with optimized point multiplication using fixed point cache */ |
| int ltc_ecc_fp_mul2add(const ecc_point *A, void *kA, |
| const ecc_point *B, void *kB, |
| ecc_point *C, |
| void *ma, |
| void *modulus); |
| #endif |
| |
| #endif |
| |
| |
| /* map P to affine from projective */ |
| int ltc_ecc_map(ecc_point *P, void *modulus, void *mp); |
| #endif /* LTC_MECC */ |
| |
| #ifdef LTC_MDSA |
| int dsa_int_validate_xy(const dsa_key *key, int *stat); |
| int dsa_int_validate_pqg(const dsa_key *key, int *stat); |
| int dsa_int_validate_primes(const dsa_key *key, int *stat); |
| #endif /* LTC_MDSA */ |
| |
| |
| #ifdef LTC_CURVE25519 |
| |
| int tweetnacl_crypto_sign( |
| unsigned char *sm,unsigned long long *smlen, |
| const unsigned char *m,unsigned long long mlen, |
| const unsigned char *sk, const unsigned char *pk); |
| int tweetnacl_crypto_sign_open( |
| int *stat, |
| unsigned char *m,unsigned long long *mlen, |
| const unsigned char *sm,unsigned long long smlen, |
| const unsigned char *pk); |
| int tweetnacl_crypto_sign_keypair(prng_state *prng, int wprng, unsigned char *pk,unsigned char *sk); |
| int tweetnacl_crypto_sk_to_pk(unsigned char *pk, const unsigned char *sk); |
| int tweetnacl_crypto_scalarmult(unsigned char *q, const unsigned char *n, const unsigned char *p); |
| int tweetnacl_crypto_scalarmult_base(unsigned char *q,const unsigned char *n); |
| |
| typedef int (*sk_to_pk)(unsigned char *pk ,const unsigned char *sk); |
| int ec25519_import_pkcs8(const unsigned char *in, unsigned long inlen, |
| const void *pwd, unsigned long pwdlen, |
| enum ltc_oid_id id, sk_to_pk fp, |
| curve25519_key *key); |
| int ec25519_export( unsigned char *out, unsigned long *outlen, |
| int which, |
| const curve25519_key *key); |
| #endif /* LTC_CURVE25519 */ |
| |
| #ifdef LTC_DER |
| |
| #define LTC_ASN1_IS_TYPE(e, t) (((e) != NULL) && ((e)->type == (t))) |
| |
| /* DER handling */ |
| int der_decode_custom_type_ex(const unsigned char *in, unsigned long inlen, |
| ltc_asn1_list *root, |
| ltc_asn1_list *list, unsigned long outlen, unsigned int flags); |
| |
| int der_encode_asn1_identifier(const ltc_asn1_list *id, unsigned char *out, unsigned long *outlen); |
| int der_decode_asn1_identifier(const unsigned char *in, unsigned long *inlen, ltc_asn1_list *id); |
| int der_length_asn1_identifier(const ltc_asn1_list *id, unsigned long *idlen); |
| |
| int der_encode_asn1_length(unsigned long len, unsigned char* out, unsigned long* outlen); |
| int der_decode_asn1_length(const unsigned char *in, unsigned long *inlen, unsigned long *outlen); |
| int der_length_asn1_length(unsigned long len, unsigned long *outlen); |
| |
| int der_length_sequence_ex(const ltc_asn1_list *list, unsigned long inlen, |
| unsigned long *outlen, unsigned long *payloadlen); |
| |
| extern const ltc_asn1_type der_asn1_tag_to_type_map[]; |
| extern const unsigned long der_asn1_tag_to_type_map_sz; |
| |
| extern const int der_asn1_type_to_identifier_map[]; |
| extern const unsigned long der_asn1_type_to_identifier_map_sz; |
| |
| int der_decode_sequence_multi_ex(const unsigned char *in, unsigned long inlen, unsigned int flags, ...); |
| |
| int der_teletex_char_encode(int c); |
| int der_teletex_value_decode(int v); |
| |
| int der_utf8_valid_char(const wchar_t c); |
| |
| typedef int (*public_key_decode_cb)(const unsigned char *in, unsigned long inlen, void *ctx); |
| |
| int x509_decode_public_key_from_certificate(const unsigned char *in, unsigned long inlen, |
| enum ltc_oid_id algorithm, ltc_asn1_type param_type, |
| ltc_asn1_list* parameters, unsigned long *parameters_len, |
| public_key_decode_cb callback, void *ctx); |
| |
| /* SUBJECT PUBLIC KEY INFO */ |
| int x509_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen, |
| unsigned int algorithm, const void* public_key, unsigned long public_key_len, |
| ltc_asn1_type parameters_type, ltc_asn1_list* parameters, unsigned long parameters_len); |
| |
| int x509_decode_subject_public_key_info(const unsigned char *in, unsigned long inlen, |
| unsigned int algorithm, void* public_key, unsigned long* public_key_len, |
| ltc_asn1_type parameters_type, ltc_asn1_list* parameters, unsigned long *parameters_len); |
| |
| int pk_oid_cmp_with_ulong(const char *o1, const unsigned long *o2, unsigned long o2size); |
| int pk_oid_cmp_with_asn1(const char *o1, const ltc_asn1_list *o2); |
| |
| #endif /* LTC_DER */ |
| |
| /* tomcrypt_pkcs.h */ |
| |
| #ifdef LTC_PKCS_8 |
| |
| int pkcs8_decode_flexi(const unsigned char *in, unsigned long inlen, |
| const void *pwd, unsigned long pwdlen, |
| ltc_asn1_list **decoded_list); |
| |
| #endif /* LTC_PKCS_8 */ |
| |
| |
| #ifdef LTC_PKCS_12 |
| |
| int pkcs12_utf8_to_utf16(const unsigned char *in, unsigned long inlen, |
| unsigned char *out, unsigned long *outlen); |
| |
| int pkcs12_kdf( int hash_id, |
| const unsigned char *pw, unsigned long pwlen, |
| const unsigned char *salt, unsigned long saltlen, |
| unsigned int iterations, unsigned char purpose, |
| unsigned char *out, unsigned long outlen); |
| |
| #endif /* LTC_PKCS_12 */ |
| |
| /* tomcrypt_prng.h */ |
| |
| #define _LTC_PRNG_EXPORT(which) \ |
| int which ## _export(unsigned char *out, unsigned long *outlen, prng_state *prng) \ |
| { \ |
| unsigned long len = which ## _desc.export_size; \ |
| \ |
| LTC_ARGCHK(prng != NULL); \ |
| LTC_ARGCHK(out != NULL); \ |
| LTC_ARGCHK(outlen != NULL); \ |
| \ |
| if (*outlen < len) { \ |
| *outlen = len; \ |
| return CRYPT_BUFFER_OVERFLOW; \ |
| } \ |
| \ |
| if (which ## _read(out, len, prng) != len) { \ |
| return CRYPT_ERROR_READPRNG; \ |
| } \ |
| \ |
| *outlen = len; \ |
| return CRYPT_OK; \ |
| } |
| |
| /* extract a byte portably */ |
| #ifdef _MSC_VER |
| #define LTC_BYTE(x, n) ((unsigned char)((x) >> (8 * (n)))) |
| #else |
| #define LTC_BYTE(x, n) (((x) >> (8 * (n))) & 255) |
| #endif |
| |
| /* ref: $Format:%D$ */ |
| /* git commit: $Format:%H$ */ |
| /* commit time: $Format:%ai$ */ |
