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/*-------------------------------------------------------------------------
*
* hmac.h
* Generic headers for HMAC
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/include/common/hmac.h
*
*-------------------------------------------------------------------------
*/
#ifndef PG_HMAC_H
#define PG_HMAC_H
#include "common/cryptohash.h"
/* opaque context, private to each HMAC implementation */
typedef struct pg_hmac_ctx pg_hmac_ctx;
extern pg_hmac_ctx *pg_hmac_create(pg_cryptohash_type type);
extern int pg_hmac_init(pg_hmac_ctx *ctx, const uint8 *key, size_t len);
extern int pg_hmac_update(pg_hmac_ctx *ctx, const uint8 *data, size_t len);
extern int pg_hmac_final(pg_hmac_ctx *ctx, uint8 *dest, size_t len);
extern void pg_hmac_free(pg_hmac_ctx *ctx);
extern const char *pg_hmac_error(pg_hmac_ctx *ctx);
#endif /* PG_HMAC_H */
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