1 /*------------------------------------------------------------------------- 2 * 3 * hmac.h 4 * Generic headers for HMAC 5 * 6 * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group 7 * Portions Copyright (c) 1994, Regents of the University of California 8 * 9 * IDENTIFICATION 10 * src/include/common/hmac.h 11 * 12 *------------------------------------------------------------------------- 13 */ 14 15 #ifndef PG_HMAC_H 16 #define PG_HMAC_H 17 18 #include "common/cryptohash.h" 19 20 /* opaque context, private to each HMAC implementation */ 21 typedef struct pg_hmac_ctx pg_hmac_ctx; 22 23 extern pg_hmac_ctx *pg_hmac_create(pg_cryptohash_type type); 24 extern int pg_hmac_init(pg_hmac_ctx *ctx, const uint8 *key, size_t len); 25 extern int pg_hmac_update(pg_hmac_ctx *ctx, const uint8 *data, size_t len); 26 extern int pg_hmac_final(pg_hmac_ctx *ctx, uint8 *dest, size_t len); 27 extern void pg_hmac_free(pg_hmac_ctx *ctx); 28 29 #endif /* PG_HMAC_H */ 30