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#ifndef HMAC_SHA2_H_
#define HMAC_SHA2_H_
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <stdint.h> // uint8_t
#include "sha2.h"
typedef struct {
uint8_t key[64];
sha256_t ctx;
} hmac_sha256_t;
void hmac_sha256_init(
hmac_sha256_t * const ctx,
const uint8_t * const key,
const size_t key_len
);
void hmac_sha256_push(
hmac_sha256_t * const ctx,
const uint8_t * const buf,
const size_t buf_len
);
void hmac_sha256_fini(
hmac_sha256_t * const ctx,
uint8_t * const out
);
void hmac_sha256(
const uint8_t * const key,
const size_t key_len,
const uint8_t * const buf,
const size_t buf_len,
uint8_t * const out
);
_Bool hmac_check(
const uint8_t * const a,
const uint8_t * const b,
const size_t len
);
#ifdef __cplusplus
};
#endif /* __cplusplus */
#endif /* HMAC_SHA2_H_ */
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