/usr/include/sodium/crypto_auth_hmacsha256.h is in libsodium-dev 1.0.16-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | #ifndef crypto_auth_hmacsha256_H
#define crypto_auth_hmacsha256_H
#include <stddef.h>
#include "crypto_hash_sha256.h"
#include "export.h"
#ifdef __cplusplus
# ifdef __GNUC__
# pragma GCC diagnostic ignored "-Wlong-long"
# endif
extern "C" {
#endif
#define crypto_auth_hmacsha256_BYTES 32U
SODIUM_EXPORT
size_t crypto_auth_hmacsha256_bytes(void);
#define crypto_auth_hmacsha256_KEYBYTES 32U
SODIUM_EXPORT
size_t crypto_auth_hmacsha256_keybytes(void);
SODIUM_EXPORT
int crypto_auth_hmacsha256(unsigned char *out,
const unsigned char *in,
unsigned long long inlen,
const unsigned char *k);
SODIUM_EXPORT
int crypto_auth_hmacsha256_verify(const unsigned char *h,
const unsigned char *in,
unsigned long long inlen,
const unsigned char *k)
__attribute__ ((warn_unused_result));
/* ------------------------------------------------------------------------- */
typedef struct crypto_auth_hmacsha256_state {
crypto_hash_sha256_state ictx;
crypto_hash_sha256_state octx;
} crypto_auth_hmacsha256_state;
SODIUM_EXPORT
size_t crypto_auth_hmacsha256_statebytes(void);
SODIUM_EXPORT
int crypto_auth_hmacsha256_init(crypto_auth_hmacsha256_state *state,
const unsigned char *key,
size_t keylen);
SODIUM_EXPORT
int crypto_auth_hmacsha256_update(crypto_auth_hmacsha256_state *state,
const unsigned char *in,
unsigned long long inlen);
SODIUM_EXPORT
int crypto_auth_hmacsha256_final(crypto_auth_hmacsha256_state *state,
unsigned char *out);
SODIUM_EXPORT
void crypto_auth_hmacsha256_keygen(unsigned char k[crypto_auth_hmacsha256_KEYBYTES]);
#ifdef __cplusplus
}
#endif
#endif
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