/* 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.
 */
/* ---- LTC_BASE64 Routines ---- */
#ifdef LTC_BASE64
int base64_encode(const unsigned char *in,  unsigned long len,
                                 char *out, unsigned long *outlen);
int base64_decode(const char *in,  unsigned long len,
                        unsigned char *out, unsigned long *outlen);
int base64_strict_decode(const char *in,  unsigned long len,
                        unsigned char *out, unsigned long *outlen);
int base64_sane_decode(const char *in,  unsigned long inlen,
                        unsigned char *out, unsigned long *outlen);
#endif
#ifdef LTC_BASE64_URL
int base64url_encode(const unsigned char *in,  unsigned long len,
                                    char *out, unsigned long *outlen);
int base64url_strict_encode(const unsigned char *in,  unsigned long inlen,
                                           char *out, unsigned long *outlen);
int base64url_decode(const char *in,  unsigned long len,
                        unsigned char *out, unsigned long *outlen);
int base64url_strict_decode(const char *in,  unsigned long len,
                        unsigned char *out, unsigned long *outlen);
int base64url_sane_decode(const char *in,  unsigned long inlen,
                        unsigned char *out, unsigned long *outlen);
#endif
/* ---- BASE32 Routines ---- */
#ifdef LTC_BASE32
typedef enum {
   BASE32_RFC4648   = 0,
   BASE32_BASE32HEX = 1,
   BASE32_ZBASE32   = 2,
   BASE32_CROCKFORD = 3
} base32_alphabet;
int base32_encode(const unsigned char *in,  unsigned long inlen,
                                 char *out, unsigned long *outlen,
                        base32_alphabet id);
int base32_decode(const          char *in,  unsigned long inlen,
                        unsigned char *out, unsigned long *outlen,
                        base32_alphabet id);
#endif
/* ---- BASE16 Routines ---- */
#ifdef LTC_BASE16
int base16_encode(const unsigned char *in,  unsigned long  inlen,
                                 char *out, unsigned long *outlen,
                                 int  caps);
int base16_decode(const          char *in,  unsigned long  inlen,
                        unsigned char *out, unsigned long *outlen);
#endif
/* ===> LTC_HKDF -- RFC5869 HMAC-based Key Derivation Function <=== */
#ifdef LTC_HKDF
int hkdf_test(void);
int hkdf_extract(int hash_idx,
                 const unsigned char *salt, unsigned long saltlen,
                 const unsigned char *in,   unsigned long inlen,
                       unsigned char *out,  unsigned long *outlen);
int hkdf_expand(int hash_idx,
                const unsigned char *info, unsigned long infolen,
                const unsigned char *in,   unsigned long inlen,
                      unsigned char *out,  unsigned long outlen);
int hkdf(int hash_idx,
         const unsigned char *salt, unsigned long saltlen,
         const unsigned char *info, unsigned long infolen,
         const unsigned char *in,   unsigned long inlen,
               unsigned char *out,  unsigned long outlen);
#endif  /* LTC_HKDF */
/* ---- MEM routines ---- */
int mem_neq(const void *a, const void *b, size_t len);
void zeromem(volatile void *dst, size_t len);
#ifdef LTC_SOURCE
void copy_or_zeromem(const unsigned char* src, unsigned char* dest, unsigned long len, int coz);
#endif
void burn_stack(unsigned long len);
const char *error_to_string(int err);
extern const char *crypt_build_settings;
/* ---- HMM ---- */
int crypt_fsa(void *mp, ...);
/* ---- Dynamic language support ---- */
int crypt_get_constant(const char* namein, int *valueout);
int crypt_list_all_constants(char *names_list, unsigned int *names_list_size);
int crypt_get_size(const char* namein, unsigned int *sizeout);
int crypt_list_all_sizes(char *names_list, unsigned int *names_list_size);
#ifdef LTM_DESC
LTC_DEPRECATED void init_LTM(void);
#endif
#ifdef TFM_DESC
LTC_DEPRECATED void init_TFM(void);
#endif
#ifdef GMP_DESC
LTC_DEPRECATED void init_GMP(void);
#endif
int crypt_mp_init(const char* mpi);
#ifdef LTC_ADLER32
typedef struct adler32_state_s
{
   unsigned short s[2];
} adler32_state;
void adler32_init(adler32_state *ctx);
void adler32_update(adler32_state *ctx, const unsigned char *input, unsigned long length);
void adler32_finish(const adler32_state *ctx, void *hash, unsigned long size);
int adler32_test(void);
#endif
#ifdef LTC_CRC32
typedef struct crc32_state_s
{
   ulong32 crc;
} crc32_state;
void crc32_init(crc32_state *ctx);
void crc32_update(crc32_state *ctx, const unsigned char *input, unsigned long length);
void crc32_finish(const crc32_state *ctx, void *hash, unsigned long size);
int crc32_test(void);
#endif
#ifdef LTC_PADDING
enum padding_type {
   LTC_PAD_PKCS7        = 0x0000U,
#ifdef LTC_RNG_GET_BYTES
   LTC_PAD_ISO_10126    = 0x1000U,
#endif
   LTC_PAD_ANSI_X923    = 0x2000U,
   LTC_PAD_ONE_AND_ZERO = 0x8000U,
   LTC_PAD_ZERO         = 0x9000U,
   LTC_PAD_ZERO_ALWAYS  = 0xA000U,
};
int padding_pad(unsigned char *data, unsigned long length, unsigned long* padded_length, unsigned long mode);
int padding_depad(const unsigned char *data, unsigned long *length, unsigned long mode);
#ifdef LTC_SOURCE
/* internal helper functions */
#define LTC_PAD_MASK       (0xF000U)
#endif
#endif  /* LTC_PADDING */
int compare_testvector(const void* is, const unsigned long is_len, const void* should, const unsigned long should_len, const char* what, int which);
/* ref:         $Format:%D$ */
/* git commit:  $Format:%H$ */
/* commit time: $Format:%ai$ */