/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
#include "tomcrypt.h"
#include <stdarg.h>
#ifndef TOMCRYPT_PRIVATE_H_
#define TOMCRYPT_PRIVATE_H_
/*
* Internal Macros
*/
/* Static assertion */
#define LTC_STATIC_ASSERT(msg, cond) typedef char ltc_static_assert_##msg[(cond) ? 1 : -1];
#define LTC_PAD_MASK (0xF000U)
/* only real 64bit, not ILP32 */
#if defined(ENDIAN_64BITWORD) && !defined(ENDIAN_64BITWORD_ILP32)
#define CONSTPTR(n) CONST64(n)
#else
#define CONSTPTR(n) n ## uL
#endif
LTC_STATIC_ASSERT(correct_CONSTPTR_size, sizeof(CONSTPTR(1)) == sizeof(void*))
/* Poor-man's `uintptr_t` since we can't use stdint.h
* c.f. https://github.com/DCIT/perl-CryptX/issues/95#issuecomment-1745280962 */
typedef size_t ltc_uintptr;
LTC_STATIC_ASSERT(correct_ltc_uintptr_size, sizeof(ltc_uintptr) == sizeof(void*))
/* Aligns a `unsigned char` buffer `buf` to `n` bytes and returns that aligned address.
* Make sure that the buffer that is passed is huge enough.
*/
#define LTC_ALIGN_BUF(buf, n) ((void*)((ltc_uintptr)&((unsigned char*)(buf))[n - 1] & (~(CONSTPTR(n) - CONSTPTR(1)))))
#define LTC_OID_MAX_STRLEN 256
/* `NULL` as defined by the standard is not guaranteed to be of a pointer
* type. In order to make sure that in vararg API's a pointer type is used,
* define our own version and use that one internally.
*/
#ifndef LTC_NULL
#define LTC_NULL ((void *)0)
#endif
/*
* Internal Enums
*/
enum ltc_oid_id {
LTC_OID_UNDEF,
LTC_OID_RSA,
LTC_OID_DSA,
LTC_OID_EC,
LTC_OID_EC_PRIMEF,
LTC_OID_X25519,
LTC_OID_ED25519,
LTC_OID_DH,
LTC_OID_NUM
};
/*
* Internal Types
*/
typedef struct {
int size;
const char *name, *base, *prime;
} ltc_dh_set_type;
struct password {
/* usually a `char*` but could also contain binary data
* so use a `void*` + length to be on the safe side.
*/
void *pw;
unsigned long l;
};
typedef int (*fn_kdf_t)(const struct password *pwd,
const unsigned char *salt, unsigned long salt_len,
int iteration_count, int hash_idx,
unsigned char *out, unsigned long *outlen);
#if defined(LTC_PBES)
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;
struct password pw;
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;
typedef struct {
const pbes_properties *data;
const char *oid;
} oid_to_pbes;
#endif
/*
* Internal functions
*/
/* tomcrypt_cipher.h */
void blowfish_enc(ulong32 *data, unsigned long blocks, const symmetric_key *skey);
int blowfish_expand(const unsigned char *key, int keylen,
const unsigned char *data, int datalen,
symmetric_key *skey);
int blowfish_setup_with_data(const unsigned char *key, int keylen,
const unsigned char *data, int datalen,
symmetric_key *skey);
/* tomcrypt_hash.h */
/* a simple macro for making hash "process" functions */
#define HASH_PROCESS(func_name, compress_name, state_var, block_size) \
int func_name (hash_state * md, const unsigned char *in, unsigned long inlen) \
{ \
unsigned long n; \
int err; \
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 * 8) < md-> state_var .length) \
|| ((inlen * 8) < inlen)) { \
return CRYPT_HASH_OVERFLOW; \
} \
while (inlen > 0) { \
if (md-> state_var .curlen == 0 && inlen >= block_size) { \
if ((err = compress_name (md, in)) != CRYPT_OK) { \
return err; \
} \
md-> state_var .length += block_size * 8; \
in += block_size; \
inlen -= 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 ((err = compress_name (md, md-> state_var .buf)) != CRYPT_OK) { \
return err; \
} \
md-> state_var .length += 8*block_size; \
md-> state_var .curlen = 0; \
} \
} \
} \
return CRYPT_OK; \
}
/* 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);
#ifdef LTC_OMAC
int omac_vprocess(omac_state *omac, const unsigned char *in, unsigned long inlen, va_list args);
#endif
/* tomcrypt_math.h */
#if !defined(DESC_DEF_ONLY)
#define LTC_MP_DIGIT_BIT ltc_mp.bits_per_digit
/* some handy macros */
#define ltc_mp_init(a) ltc_mp.init(a)
#define ltc_mp_clear(a) ltc_mp.deinit(a)
#define ltc_mp_init_copy(a, b) ltc_mp.init_copy(a, b)
#define ltc_mp_neg(a, b) ltc_mp.neg(a, b)
#define ltc_mp_copy(a, b) ltc_mp.copy(a, b)
#define ltc_mp_set(a, b) ltc_mp.set_int(a, b)
#define ltc_mp_set_int(a, b) ltc_mp.set_int(a, b)
#define ltc_mp_get_int(a) ltc_mp.get_int(a)
#define ltc_mp_get_digit(a, n) ltc_mp.get_digit(a, n)
#define ltc_mp_get_digit_count(a) ltc_mp.get_digit_count(a)
#define ltc_mp_cmp(a, b) ltc_mp.compare(a, b)
#define ltc_mp_cmp_d(a, b) ltc_mp.compare_d(a, b)
#define ltc_mp_count_bits(a) ltc_mp.count_bits(a)
#define ltc_mp_cnt_lsb(a) ltc_mp.count_lsb_bits(a)
#define ltc_mp_2expt(a, b) ltc_mp.twoexpt(a, b)
#define ltc_mp_read_radix(a, b, c) ltc_mp.read_radix(a, b, c)
#define ltc_mp_toradix(a, b, c) ltc_mp.write_radix(a, b, c)
#define ltc_mp_unsigned_bin_size(a) ltc_mp.unsigned_size(a)
#define ltc_mp_to_unsigned_bin(a, b) ltc_mp.unsigned_write(a, b)
#define ltc_mp_read_unsigned_bin(a, b, c) ltc_mp.unsigned_read(a, b, c)
#define ltc_mp_add(a, b, c) ltc_mp.add(a, b, c)
#define ltc_mp_add_d(a, b, c) ltc_mp.addi(a, b, c)
#define ltc_mp_sub(a, b, c) ltc_mp.sub(a, b, c)
#define ltc_mp_sub_d(a, b, c) ltc_mp.subi(a, b, c)
#define ltc_mp_mul(a, b, c) ltc_mp.mul(a, b, c)
#define ltc_mp_mul_d(a, b, c) ltc_mp.muli(a, b, c)
#define ltc_mp_sqr(a, b) ltc_mp.sqr(a, b)
#define ltc_mp_sqrtmod_prime(a, b, c) ltc_mp.sqrtmod_prime(a, b, c)
#define ltc_mp_div(a, b, c, d) ltc_mp.mpdiv(a, b, c, d)
#define ltc_mp_div_2(a, b) ltc_mp.div_2(a, b)
#define ltc_mp_mod(a, b, c) ltc_mp.mpdiv(a, b, NULL, c)
#define ltc_mp_mod_d(a, b, c) ltc_mp.modi(a, b, c)
#define ltc_mp_gcd(a, b, c) ltc_mp.gcd(a, b, c)
#define ltc_mp_lcm(a, b, c) ltc_mp.lcm(a, b, c)
#define ltc_mp_addmod(a, b, c, d) ltc_mp.addmod(a, b, c, d)
#define ltc_mp_submod(a, b, c, d) ltc_mp.submod(a, b, c, d)
#define ltc_mp_mulmod(a, b, c, d) ltc_mp.mulmod(a, b, c, d)
#define ltc_mp_sqrmod(a, b, c) ltc_mp.sqrmod(a, b, c)
#define ltc_mp_invmod(a, b, c) ltc_mp.invmod(a, b, c)
#define ltc_mp_montgomery_setup(a, b) ltc_mp.montgomery_setup(a, b)
#define ltc_mp_montgomery_normalization(a, b) ltc_mp.montgomery_normalization(a, b)
#define ltc_mp_montgomery_reduce(a, b, c) ltc_mp.montgomery_reduce(a, b, c)
#define ltc_mp_montgomery_free(a) ltc_mp.montgomery_deinit(a)
#define ltc_mp_exptmod(a,b,c,d) ltc_mp.exptmod(a,b,c,d)
#define ltc_mp_prime_is_prime(a, b, c) ltc_mp.isprime(a, b, c)
#define ltc_mp_iszero(a) (ltc_mp_cmp_d(a, 0) == LTC_MP_EQ ? LTC_MP_YES : LTC_MP_NO)
#define ltc_mp_isodd(a) (ltc_mp_get_digit_count(a) > 0 ? (ltc_mp_get_digit(a, 0) & 1 ? LTC_MP_YES : LTC_MP_NO) : LTC_MP_NO)
#define ltc_mp_exch(a, b) do { void *ABC__tmp = a; a = b; b = ABC__tmp; } while(0)
#define ltc_mp_tohex(a, b) ltc_mp_toradix(a, b, 16)
#define ltc_mp_rand(a, b) ltc_mp.rand(a, b)
#endif
/* tomcrypt_misc.h */
typedef enum {
/** Use `\r\n` as line separator */
BASE64_PEM_CRLF = 1,
/** Create output with 72 chars line length */
BASE64_PEM_SSH = 2,
} base64_pem_flags;
int base64_encode_pem(const unsigned char *in, unsigned long inlen,
char *out, unsigned long *outlen,
unsigned int flags);
/* PEM related */
#ifdef LTC_PEM
enum cipher_mode {
cm_modes = 0x00ff,
cm_flags = 0xff00,
/* Flags */
cm_openssh = 0x0100,
cm_1bit = 0x0200,
cm_8bit = 0x0400,
/* Modes */
cm_none = 0x0000,
cm_cbc = 0x0001,
cm_cfb = 0x0002,
cm_ctr = 0x0003,
cm_ofb = 0x0004,
cm_stream = 0x0005,
cm_gcm = 0x0006,
cm_cfb1 = cm_cfb | cm_1bit,
cm_cfb8 = cm_cfb | cm_8bit,
cm_stream_openssh = cm_stream | cm_openssh,
};
struct blockcipher_info {
const char *name;
const char *algo;
unsigned long keylen;
enum cipher_mode mode;
/* should use `MAXBLOCKSIZE` here, but all supported
* blockciphers require max 16 bytes IV */
char iv[16 * 2 + 1];
};
struct str {
char *p;
unsigned long len;
};
#define SET_STR(n, s) n.p = s, n.len = XSTRLEN(s)
#define SET_CSTR(n, s) n.p = (char*)s, n.len = (sizeof s) - 1
#define COPY_STR(n, s, l) do { XMEMCPY(n.p, s, l); n.len = l; } while(0)
#define RESET_STR(n) do { n.p = NULL; n.len = 0; } while(0)
enum more_headers {
no,
yes,
maybe
};
enum pem_flags {
pf_encrypted = 0x01u,
pf_pkcs8 = 0x02u,
pf_public = 0x04u,
pf_x509 = 0x08u,
pf_encrypted_pkcs8 = pf_encrypted | pf_pkcs8,
};
struct pem_header_id {
struct str start, end;
enum more_headers has_more_headers;
enum pem_flags flags;
enum ltc_pka_id pka;
int (*decrypt)(void *, unsigned long *, void *);
};
struct pem_headers {
const struct pem_header_id *id;
int encrypted;
struct blockcipher_info info;
struct password *pw;
};
struct bufp {
/* `end` points to one byte after the last
* element of the allocated buffer
*/
char *start, *work, *end;
};
#define SET_BUFP(n, d, l) n.start = (char*)d, n.work = (char*)d, n.end = (char*)d + l + 1
struct get_char {
int (*get)(struct get_char*);
union {
#ifndef LTC_NO_FILE
FILE *f;
#endif /* LTC_NO_FILE */
struct bufp buf;
} data;
struct str unget_buf;
char unget_buf_[LTC_PEM_DECODE_BUFSZ];
};
#endif
/* others */
void copy_or_zeromem(const unsigned char* src, unsigned char* dest, unsigned long len, int coz);
void password_free(struct password *pw, const struct password_ctx *ctx);
#if defined(LTC_PBES)
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);
#endif
#ifdef LTC_PEM
int pem_decrypt(unsigned char *data, unsigned long *datalen,
unsigned char *key, unsigned long keylen,
unsigned char *iv, unsigned long ivlen,
unsigned char *tag, unsigned long taglen,
const struct blockcipher_info *info,
enum padding_type padding);
#ifndef LTC_NO_FILE
int pem_get_char_from_file(struct get_char *g);
#endif /* LTC_NO_FILE */
int pem_get_char_from_buf(struct get_char *g);
int pem_read(void *pem, unsigned long *w, struct pem_headers *hdr, struct get_char *g);
#endif
/* 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_get_pka_id(enum ltc_oid_id id, enum ltc_pka_id *pka);
int pk_get_oid_id(enum ltc_pka_id pka, enum ltc_oid_id *oid);
#ifdef LTC_DER
int pk_get_oid_from_asn1(const ltc_asn1_list *oid, enum ltc_oid_id *id);
#endif
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);
int pk_oid_cmp_with_ulong(const char *o1, const unsigned long *o2, unsigned long o2size);
/* ---- DH Routines ---- */
#ifdef LTC_MRSA
int rsa_init(rsa_key *key);
void rsa_shrink_key(rsa_key *key);
int rsa_make_key_bn_e(prng_state *prng, int wprng, int size, void *e,
rsa_key *key); /* used by op-tee */
int rsa_import_pkcs1(const unsigned char *in, unsigned long inlen, rsa_key *key);
int rsa_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key, rsa_key *key);
#endif /* LTC_MRSA */
/* ---- DH Routines ---- */
#ifdef LTC_MDH
extern const ltc_dh_set_type ltc_dh_sets[];
int dh_init(dh_key *key);
int dh_check_pubkey(const dh_key *key);
int dh_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key, 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_DER
int ecc_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key, ecc_key *key);
#endif
int ecc_import_with_curve(const unsigned char *in, unsigned long inlen, int type, ecc_key *key);
int ecc_import_with_oid(const unsigned char *in, unsigned long inlen, unsigned long *oid, unsigned long oid_len, int type, ecc_key *key);
int ecc_sign_hash_internal(const unsigned char *in, unsigned long inlen,
void *r, void *s, prng_state *prng, int wprng,
int *recid, const ecc_key *key);
int ecc_verify_hash_internal(void *r, void *s,
const unsigned char *hash, unsigned long hashlen,
int *stat, const 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, const 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,
const void *ma, const void *modulus, void *mp);
/* R = P + Q */
int ltc_ecc_projective_add_point(const ecc_point *P, const ecc_point *Q, ecc_point *R,
const void *ma, const 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(const void *k, const ecc_point *G, ecc_point *R,
const void *a, const 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,
const void *ma,
const 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,
const void *ma,
const void *modulus);
#endif
#endif
/* map P to affine from projective */
int ltc_ecc_map(ecc_point *P, const void *modulus, void *mp);
#endif /* LTC_MECC */
#ifdef LTC_MDSA
int dsa_int_init(dsa_key *key);
int dsa_int_validate(const dsa_key *key, int *stat);
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);
int dsa_import_pkcs1(const unsigned char *in, unsigned long inlen, dsa_key *key);
int dsa_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key, dsa_key *key);
#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,
const unsigned char *ctx,unsigned long long cs);
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 *ctx, unsigned long long cs,
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);
int tweetnacl_crypto_ph(unsigned char *out, const unsigned char *msg, unsigned long long msglen);
int ed25519_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key,
curve25519_key *key);
int x25519_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key,
curve25519_key *key);
int ec25519_import_pkcs8_asn1(ltc_asn1_list *alg_id, ltc_asn1_list *priv_key,
enum ltc_oid_id id,
curve25519_key *key);
int ec25519_import_pkcs8(const unsigned char *in, unsigned long inlen,
const password_ctx *pw_ctx,
enum ltc_oid_id id,
curve25519_key *key);
int ec25519_export( unsigned char *out, unsigned long *outlen,
int which,
const curve25519_key *key);
int ec25519_crypto_ctx( unsigned char *out, unsigned long *outlen,
unsigned char flag,
const unsigned char *ctx, unsigned long ctxlen);
#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);
typedef struct {
ltc_asn1_type t;
ltc_asn1_list **pp;
} der_flexi_check;
#define LTC_SET_DER_FLEXI_CHECK(list, index, Type, P) \
do { \
int LTC_SDFC_temp##__LINE__ = (index); \
list[LTC_SDFC_temp##__LINE__].t = Type; \
list[LTC_SDFC_temp##__LINE__].pp = P; \
} while (0)
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_flexi_sequence_cmp(const ltc_asn1_list *flexi, der_flexi_check *check);
int der_decode_sequence_multi_ex(const unsigned char *in, unsigned long inlen, unsigned int flags, ...)
LTC_NULL_TERMINATED;
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);
int x509_decode_spki(const unsigned char *in, unsigned long inlen, ltc_asn1_list **out, ltc_asn1_list **spki);
/* SUBJECT PUBLIC KEY INFO */
int x509_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen,
enum ltc_oid_id 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,
enum ltc_oid_id 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_asn1(const char *o1, const ltc_asn1_list *o2);
#endif /* LTC_DER */
/* tomcrypt_pkcs.h */
#ifdef LTC_PKCS_8
/* Public-Key Cryptography Standards (PKCS) #8:
* Private-Key Information Syntax Specification Version 1.2
* https://tools.ietf.org/html/rfc5208
*
* PrivateKeyInfo ::= SEQUENCE {
* version Version,
* privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
* privateKey PrivateKey,
* attributes [0] IMPLICIT Attributes OPTIONAL }
* where:
* - Version ::= INTEGER
* - PrivateKeyAlgorithmIdentifier ::= AlgorithmIdentifier
* - PrivateKey ::= OCTET STRING
* - Attributes ::= SET OF Attribute
*
* EncryptedPrivateKeyInfo ::= SEQUENCE {
* encryptionAlgorithm EncryptionAlgorithmIdentifier,
* encryptedData EncryptedData }
* where:
* - EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
* - EncryptedData ::= OCTET STRING
*/
int pkcs8_decode_flexi(const unsigned char *in, unsigned long inlen,
const password_ctx *pw_ctx,
ltc_asn1_list **decoded_list);
int pkcs8_get_children(const ltc_asn1_list *decoded_list, enum ltc_oid_id *pka,
ltc_asn1_list **alg_id, ltc_asn1_list **priv_key);
#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
/*
* On Windows, choose whether to use CryptGenRandom() [older Windows versions]
* or BCryptGenRandom() [newer Windows versions].
* If CryptGenRandom() is desired, define LTC_NO_WIN32_BCRYPT when building.
*/
#if defined(_MSC_VER) && defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0600
#if !defined(LTC_NO_WIN32_BCRYPT)
#define LTC_WIN32_BCRYPT
#endif
#endif
#endif /* TOMCRYPT_PRIVATE_H_ */