1/*
2 This file is part of KittenDB/Engine Library.
3
4 KittenDB/Engine Library is free software: you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
8
9 KittenDB/Engine Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with KittenDB/Engine Library. If not, see <http://www.gnu.org/licenses/>.
16
17 Copyright 2016 Telegram Messenger Inc
18 2016 Nikolai Durov
19*/
20
21#pragma once
22
23#include <openssl/evp.h>
24#include <openssl/opensslv.h>
25
26#if OPENSSL_VERSION_NUMBER < 0x10100000
27#define EVP_MD_CTX_new EVP_MD_CTX_create
28#define EVP_MD_CTX_free EVP_MD_CTX_destroy
29#endif
30
31typedef EVP_MD_CTX sha256_context;
32
33void sha256_starts (sha256_context *ctx);
34void sha256_update (sha256_context *ctx, const unsigned char *input, int ilen);
35void sha256_finish (sha256_context *ctx, unsigned char output[32]);
36void sha256 (const unsigned char *input, int ilen, unsigned char output[32]);
37void sha256_two_chunks (const unsigned char *input1, int ilen1, const unsigned char *input2, int ilen2, unsigned char output[32]);
38