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Directory :  /proc/thread-self/root/usr/include/sodium/

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Current File : /proc/thread-self/root/usr/include/sodium/crypto_kdf_hkdf_sha256.h
#ifndef crypto_kdf_hkdf_sha256_H
#define crypto_kdf_hkdf_sha256_H

#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>

#include "crypto_kdf.h"
#include "crypto_auth_hmacsha256.h"
#include "export.h"

#ifdef __cplusplus
# ifdef __GNUC__
#  pragma GCC diagnostic ignored "-Wlong-long"
# endif
extern "C" {
#endif

#define crypto_kdf_hkdf_sha256_KEYBYTES crypto_auth_hmacsha256_BYTES
SODIUM_EXPORT
size_t crypto_kdf_hkdf_sha256_keybytes(void);

#define crypto_kdf_hkdf_sha256_BYTES_MIN 0U
SODIUM_EXPORT
size_t crypto_kdf_hkdf_sha256_bytes_min(void);

#define crypto_kdf_hkdf_sha256_BYTES_MAX (0xff * crypto_auth_hmacsha256_BYTES)
SODIUM_EXPORT
size_t crypto_kdf_hkdf_sha256_bytes_max(void);

SODIUM_EXPORT
int crypto_kdf_hkdf_sha256_extract(unsigned char prk[crypto_kdf_hkdf_sha256_KEYBYTES],
                                   const unsigned char *salt, size_t salt_len,
                                   const unsigned char *ikm, size_t ikm_len)
            __attribute__ ((nonnull(4)));

SODIUM_EXPORT
void crypto_kdf_hkdf_sha256_keygen(unsigned char prk[crypto_kdf_hkdf_sha256_KEYBYTES]);

SODIUM_EXPORT
int crypto_kdf_hkdf_sha256_expand(unsigned char *out, size_t out_len,
                                  const char *ctx, size_t ctx_len,
                                  const unsigned char prk[crypto_kdf_hkdf_sha256_KEYBYTES])
            __attribute__ ((nonnull(1)));

/* ------------------------------------------------------------------------- */

typedef struct crypto_kdf_hkdf_sha256_state {
    crypto_auth_hmacsha256_state st;
} crypto_kdf_hkdf_sha256_state;

SODIUM_EXPORT
size_t crypto_kdf_hkdf_sha256_statebytes(void);

SODIUM_EXPORT
int crypto_kdf_hkdf_sha256_extract_init(crypto_kdf_hkdf_sha256_state *state,
                                        const unsigned char *salt, size_t salt_len)
            __attribute__ ((nonnull(1)));

SODIUM_EXPORT
int crypto_kdf_hkdf_sha256_extract_update(crypto_kdf_hkdf_sha256_state *state,
                                          const unsigned char *ikm, size_t ikm_len)
            __attribute__ ((nonnull));

SODIUM_EXPORT
int crypto_kdf_hkdf_sha256_extract_final(crypto_kdf_hkdf_sha256_state *state,
                                         unsigned char prk[crypto_kdf_hkdf_sha256_KEYBYTES])
            __attribute__ ((nonnull));

#ifdef __cplusplus
}
#endif

#endif

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