#ifndef crypto_auth_hmacsha512_H

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#define crypto_auth_hmacsha512_H

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#include <stddef.h>

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#include "crypto_hash_sha512.h"

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#include "export.h"

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#ifdef __cplusplus

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# ifdef __GNUC__

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# pragma GCC diagnostic ignored "-Wlong-long"

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# endif

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extern "C" {

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#endif

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#define crypto_auth_hmacsha512_BYTES 64U

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SODIUM_EXPORT

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size_t crypto_auth_hmacsha512_bytes(void);

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#define crypto_auth_hmacsha512_KEYBYTES 32U

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SODIUM_EXPORT

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size_t crypto_auth_hmacsha512_keybytes(void);

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SODIUM_EXPORT

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int crypto_auth_hmacsha512(unsigned char *out,

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const unsigned char *in,

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unsigned long long inlen,

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const unsigned char *k) __attribute__ ((nonnull(1, 4)));

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SODIUM_EXPORT

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int crypto_auth_hmacsha512_verify(const unsigned char *h,

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const unsigned char *in,

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unsigned long long inlen,

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const unsigned char *k)

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__attribute__ ((warn_unused_result)) __attribute__ ((nonnull(1, 4)));

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

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typedef struct crypto_auth_hmacsha512_state {

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crypto_hash_sha512_state ictx;

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crypto_hash_sha512_state octx;

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} crypto_auth_hmacsha512_state;

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SODIUM_EXPORT

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size_t crypto_auth_hmacsha512_statebytes(void);

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SODIUM_EXPORT

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int crypto_auth_hmacsha512_init(crypto_auth_hmacsha512_state *state,

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const unsigned char *key,

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size_t keylen) __attribute__ ((nonnull));

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SODIUM_EXPORT

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int crypto_auth_hmacsha512_update(crypto_auth_hmacsha512_state *state,

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const unsigned char *in,

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unsigned long long inlen) __attribute__ ((nonnull(1)));

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SODIUM_EXPORT

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int crypto_auth_hmacsha512_final(crypto_auth_hmacsha512_state *state,

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unsigned char *out) __attribute__ ((nonnull));

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SODIUM_EXPORT

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void crypto_auth_hmacsha512_keygen(unsigned char k[crypto_auth_hmacsha512_KEYBYTES])

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__attribute__ ((nonnull));

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#ifdef __cplusplus

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}

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#endif

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#endif

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