/*
 * Copyright (C) 2023 TU Dresden
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */

/**
 * @ingroup     sys_hashes
 *
 * @{
 * @file
 * @brief       SHA384 hash function implementation
 *
 * @author      Mikolai Gütschow <mikolai.guetschow@tu-dresden.de>
 *
 * @}
 */

#include <assert.h>

#include "hashes/sha384.h"

void sha384_init(sha384_context_t *ctx)
{
    /* Zero bits processed so far */
    ctx->count[0] = ctx->count[1] = 0;

    /* Magic initialization constants */
    ctx->state[0] = 0xcbbb9d5dc1059ed8;
    ctx->state[1] = 0x629a292a367cd507;
    ctx->state[2] = 0x9159015a3070dd17;
    ctx->state[3] = 0x152fecd8f70e5939;
    ctx->state[4] = 0x67332667ffc00b31;
    ctx->state[5] = 0x8eb44a8768581511;
    ctx->state[6] = 0xdb0c2e0d64f98fa7;
    ctx->state[7] = 0x47b5481dbefa4fa4;
}

void sha384(const void *data, size_t len, void *digest)
{
    sha384_context_t c;
    assert(digest);

    sha384_init(&c);
    sha384_update(&c, data, len);
    sha384_final(&c, digest);
}