/usr/include/sodium/crypto_auth_hmacsha512.h is in libsodium-dev 1.0.8-5.
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  | #ifndef crypto_auth_hmacsha512_H
#define crypto_auth_hmacsha512_H
#include <stddef.h>
#include "crypto_hash_sha512.h"
#include "export.h"
#ifdef __cplusplus
# if __GNUC__
#  pragma GCC diagnostic ignored "-Wlong-long"
# endif
extern "C" {
#endif
#define crypto_auth_hmacsha512_BYTES 64U
SODIUM_EXPORT
size_t crypto_auth_hmacsha512_bytes(void);
#define crypto_auth_hmacsha512_KEYBYTES 32U
SODIUM_EXPORT
size_t crypto_auth_hmacsha512_keybytes(void);
SODIUM_EXPORT
int crypto_auth_hmacsha512(unsigned char *out,
                           const unsigned char *in,
                           unsigned long long inlen,
                           const unsigned char *k);
SODIUM_EXPORT
int crypto_auth_hmacsha512_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_hmacsha512_state {
    crypto_hash_sha512_state ictx;
    crypto_hash_sha512_state octx;
} crypto_auth_hmacsha512_state;
SODIUM_EXPORT
size_t crypto_auth_hmacsha512_statebytes(void);
SODIUM_EXPORT
int crypto_auth_hmacsha512_init(crypto_auth_hmacsha512_state *state,
                                const unsigned char *key,
                                size_t keylen);
SODIUM_EXPORT
int crypto_auth_hmacsha512_update(crypto_auth_hmacsha512_state *state,
                                  const unsigned char *in,
                                  unsigned long long inlen);
SODIUM_EXPORT
int crypto_auth_hmacsha512_final(crypto_auth_hmacsha512_state *state,
                                 unsigned char *out);
#ifdef __cplusplus
}
#endif
#endif
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