cryptohash.h

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/*-------------------------------------------------------------------------
 *
 * cryptohash.h
 *    Generic headers for cryptographic hash functions.
 *
 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * IDENTIFICATION
 *        src/include/common/cryptohash.h
 *
 *-------------------------------------------------------------------------
 */
 
#ifndef PG_CRYPTOHASH_H
#define PG_CRYPTOHASH_H
 
/* Context Structures for each hash function */
typedef enum
{
    PG_MD5 = 0,
    PG_SHA1,
    PG_SHA224,
    PG_SHA256,
    PG_SHA384,
    PG_SHA512,
} pg_cryptohash_type;
 
/* opaque context, private to each cryptohash implementation */
typedef struct pg_cryptohash_ctx pg_cryptohash_ctx;
 
extern pg_cryptohash_ctx *pg_cryptohash_create(pg_cryptohash_type type);
extern int  pg_cryptohash_init(pg_cryptohash_ctx *ctx);
extern int  pg_cryptohash_update(pg_cryptohash_ctx *ctx, const uint8 *data, size_t len);
extern int  pg_cryptohash_final(pg_cryptohash_ctx *ctx, uint8 *dest, size_t len);
extern void pg_cryptohash_free(pg_cryptohash_ctx *ctx);
extern const char *pg_cryptohash_error(pg_cryptohash_ctx *ctx);
 
#endif                          /* PG_CRYPTOHASH_H */