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/*
* Copyright (C) 2022 - This file is part of libecc project
*
* Authors:
* Ryad BENADJILA <ryadbenadjila@gmail.com>
* Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr>
*
* This software is licensed under a dual BSD and GPL v2 license.
* See LICENSE file at the root folder of the project.
*/
#include <libecc/lib_ecc_config.h>
#ifdef WITH_HASH_BASH256
#include <libecc/hash/bash256.h>
/* Init hash function. Returns 0 on success, -1 on error. */
int bash256_init(bash256_context *ctx)
{
int ret;
ret = _bash_init(ctx, BASH256_DIGEST_SIZE); EG(ret, err);
/* Tell that we are initialized */
ctx->magic = BASH256_HASH_MAGIC;
err:
return ret;
}
/* Update hash function. Returns 0 on success, -1 on error. */
int bash256_update(bash256_context *ctx, const u8 *input, u32 ilen)
{
int ret;
BASH256_HASH_CHECK_INITIALIZED(ctx, ret, err);
ret = _bash_update((bash_context *)ctx, input, ilen);
err:
return ret;
}
/* Finalize hash function. Returns 0 on success, -1 on error. */
int bash256_final(bash256_context *ctx, u8 output[BASH256_DIGEST_SIZE])
{
int ret;
BASH256_HASH_CHECK_INITIALIZED(ctx, ret, err);
ret = _bash_finalize((bash_context *)ctx, output); EG(ret, err);
/* Tell that we are uninitialized */
ctx->magic = WORD(0);
ret = 0;
err:
return ret;
}
/*
* Scattered version performing init/update/finalize on a vector of buffers
* 'inputs' with the length of each buffer passed via 'ilens'. The function
* loops on pointers in 'inputs' until it finds a NULL pointer. The function
* returns 0 on success, -1 on error.
*/
int bash256_scattered(const u8 **inputs, const u32 *ilens,
u8 output[BASH256_DIGEST_SIZE])
{
bash256_context ctx;
int ret, pos = 0;
MUST_HAVE((inputs != NULL) && (ilens != NULL) && (output != NULL), ret, err);
ret = bash256_init(&ctx); EG(ret, err);
while (inputs[pos] != NULL) {
ret = bash256_update(&ctx, inputs[pos], ilens[pos]); EG(ret, err);
pos += 1;
}
ret = bash256_final(&ctx, output);
err:
return ret;
}
/*
* Single call version performing init/update/final on given input.
* Returns 0 on success, -1 on error.
*/
int bash256(const u8 *input, u32 ilen, u8 output[BASH256_DIGEST_SIZE])
{
bash256_context ctx;
int ret;
ret = bash256_init(&ctx); EG(ret, err);
ret = bash256_update(&ctx, input, ilen); EG(ret, err);
ret = bash256_final(&ctx, output); EG(ret, err);
err:
return ret;
}
#else /* WITH_HASH_BASH256 */
/*
* Dummy definition to avoid the empty translation unit ISO C warning
*/
typedef int dummy;
#endif /* WITH_HASH_BASH256 */
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