sha1.h

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/*
 * Copyright (C) 2016 Oliver Hahm <oliver.hahm@inria.fr>
 *
 * 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.
 */
 
#pragma once
 
/* This code is public-domain - it is based on libcrypt
 * placed in the public domain by Wei Dai and other contributors. */
 
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define SHA1_DIGEST_LENGTH  (20)
 
#define SHA1_BLOCK_LENGTH   (64)
 
typedef struct {
    uint32_t buffer[SHA1_BLOCK_LENGTH / sizeof(uint32_t)];
    uint32_t state[SHA1_DIGEST_LENGTH / sizeof(uint32_t)];
    uint32_t byte_count;
    uint8_t buffer_offset;
    uint8_t key_buffer[SHA1_BLOCK_LENGTH];
    uint8_t inner_hash[SHA1_DIGEST_LENGTH];
} sha1_context;
 
void sha1_init(sha1_context *ctx);
 
void sha1_update(sha1_context *ctx, const void *data, size_t len);
 
void sha1_final(sha1_context *ctx, void *digest);
 
void sha1(void *digest, const void *data, size_t len);
 
void sha1_init_hmac(sha1_context *ctx, const void *key, size_t key_length);
 
void sha1_final_hmac(sha1_context *ctx, void *digest);
 
#ifdef __cplusplus
}
#endif