cx_hash.h

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/*******************************************************************************
 *   Ledger Nano S - Secure firmware
 *   (c) 2022 Ledger
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 ********************************************************************************/
 
#ifndef CX_HASH_H
#define CX_HASH_H
 
#ifdef HAVE_HASH
 
#include "lcx_hash.h"
#include <stddef.h>
 
#if defined(HAVE_SHA256) || defined(HAVE_SHA224)
#define SHA256_BLOCK_SIZE 64
#endif
 
#if defined(HAVE_SHA512) || defined(HAVE_SHA384)
#define SHA512_BLOCK_SIZE 128
#endif
 
// #warning reduce MAX_HASH_SIZE and MAX_HASH_BLOCK_SIZE according to HAVE_xxx
#define MAX_HASH_SIZE       128
#define MAX_HASH_BLOCK_SIZE 128
 
#ifdef HAVE_BLAKE2
WARN_UNUSED_RESULT cx_err_t cx_blake2b(cx_hash_t     *hash,
                                       uint32_t       mode,
                                       const uint8_t *in,
                                       size_t         in_len,
                                       uint8_t       *out,
                                       size_t         out_len);
#endif
 
const cx_hash_info_t *cx_hash_get_info(cx_md_t md_type);
 
void cx_hash_destroy(cx_hash_t *hash_ctx);
 
#endif  // HAVE_HASH
 
#endif  // CX_HASH_H