/* * Copyright (C) 2017 - This file is part of libecc project * * Authors: * Ryad BENADJILA <ryadbenadjila@gmail.com> * Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr> * Jean-Pierre FLORI <jean-pierre.flori@ssi.gouv.fr> * * Contributors: * Nicolas VIVET <nicolas.vivet@ssi.gouv.fr> * Karim KHALFALLAH <karim.khalfallah@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_SHA512_224 #include <libecc/hash/sha512-224.h> /* Init hash function. Returns 0 on success, -1 on error. */ int sha512_224_init(sha512_224_context *ctx) { int ret; MUST_HAVE((ctx != NULL), ret, err); ctx->sha512_total[0] = ctx->sha512_total[1] = 0; ctx->sha512_state[0] = (u64)(0x8C3D37C819544DA2); ctx->sha512_state[1] = (u64)(0x73E1996689DCD4D6); ctx->sha512_state[2] = (u64)(0x1DFAB7AE32FF9C82); ctx->sha512_state[3] = (u64)(0x679DD514582F9FCF); ctx->sha512_state[4] = (u64)(0x0F6D2B697BD44DA8); ctx->sha512_state[5] = (u64)(0x77E36F7304C48942); ctx->sha512_state[6] = (u64)(0x3F9D85A86A1D36C8); ctx->sha512_state[7] = (u64)(0x1112E6AD91D692A1); /* Tell that we are initialized */ ctx->magic = SHA512_224_HASH_MAGIC; ret = 0; err: return ret; } /* Update hash function. Returns 0 on success, -1 on error. */ int sha512_224_update(sha512_224_context *ctx, const u8 *input, u32 ilen) { int ret; SHA512_224_HASH_CHECK_INITIALIZED(ctx, ret, err); ret = sha512_core_update(ctx, input, ilen); err: return ret; } /* Finalize hash function. Returns 0 on success, -1 on error. */ int sha512_224_final(sha512_224_context *ctx, u8 output[SHA512_224_DIGEST_SIZE]) { int ret; SHA512_224_HASH_CHECK_INITIALIZED(ctx, ret, err); ret = sha512_core_final(ctx, output, SHA512_224_DIGEST_SIZE); 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 sha512_224_scattered(const u8 **inputs, const u32 *ilens, u8 output[SHA512_224_DIGEST_SIZE]) { sha512_224_context ctx; int pos = 0; int ret; MUST_HAVE((inputs != NULL) && (ilens != NULL) && (output != NULL), ret, err); ret = sha512_224_init(&ctx); EG(ret, err); while (inputs[pos] != NULL) { ret = sha512_224_update(&ctx, inputs[pos], ilens[pos]); EG(ret, err); pos += 1; } ret = sha512_224_final(&ctx, output); err: return ret; } /* init/update/finalize on a single buffer 'input' of length 'ilen'. */ int sha512_224(const u8 *input, u32 ilen, u8 output[SHA512_224_DIGEST_SIZE]) { sha512_224_context ctx; int ret; ret = sha512_224_init(&ctx); EG(ret, err); ret = sha512_224_update(&ctx, input, ilen); EG(ret, err); ret = sha512_224_final(&ctx, output); err: return ret; } #else /* WITH_HASH_SHA512_224 */ /* * Dummy definition to avoid the empty translation unit ISO C warning */ typedef int dummy; #endif /* WITH_HASH_SHA512_224 */