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/* Hash algorithms, for libreswan
*
* Copyright (C) 2016-2019 Andrew Cagney <cagney@gnu.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef crypt_hash_h
#define crypt_hash_h
#include <pk11pub.h>
#include "chunk.h"
#include "crypt_mac.h"
struct hash_desc;
struct crypt_hash;
struct logger;
/*
* Initialization.
*/
struct crypt_hash *crypt_hash_init(const char *hash_name,
const struct hash_desc *hash_desc,
struct logger *logger);
/*
* Digest the body
*/
void crypt_hash_digest_symkey(struct crypt_hash *hash,
const char *symkey_name, PK11SymKey *symkey);
void crypt_hash_digest_byte(struct crypt_hash *hash,
const char *byte_name, uint8_t byte);
void crypt_hash_digest_bytes(struct crypt_hash *hash,
const char *bytes_name, const void *bytes,
size_t sizeof_bytes);
#define crypt_hash_digest_hunk(HASH, NAME, HUNK) \
{ \
typeof(HUNK) hunk_ = HUNK; /* evaluate once */ \
crypt_hash_digest_bytes(HASH, NAME, \
hunk_.ptr, hunk_.len); \
}
#define crypt_hash_digest_thing(HASH, NAME, THING) crypt_hash_digest_bytes(HASH, NAME, &THING, sizeof(THING))
/*
* Finally ...
*
* This will free HASH and blat the pointer.
*/
void crypt_hash_final_bytes(struct crypt_hash **hashp,
uint8_t *bytes, size_t sizeof_bytes);
struct crypt_mac crypt_hash_final_mac(struct crypt_hash **hashp);
/*
* Short cut for symkeys.
*/
PK11SymKey *crypt_hash_symkey(const char *hash_name,
const struct hash_desc *hash_desc,
const char *symkey_name, PK11SymKey *symkey,
struct logger *logger);
#endif
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