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// This file is part of cryptosuite2. //
// //
// cryptosuite2 is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// (at your option) any later version. //
// //
// cryptosuite2 is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with cryptosuite2. If not, see <http://www.gnu.org/licenses/>. //
// //
#ifndef SHA1_HASH_H_
#define SHA1_HASH_H_
#include "default.h"
#include "constants.h"
#include "types.h"
#include "basic.h"
void sha1_hash_block(sha1_hasher_t hasher);
void sha1_hasher_add_byte(sha1_hasher_t hasher, uint8_t byte);
/**
* NOTE: once the block has been pad'ed the hasher will
* produce nonsense data. Therefore putc will return EOF
* once the hasher has been pad'ed (this happens, when
* sha1_hasher_gethash or sha1_hasher_gethmac are invoced).
* */
uint8_t sha1_hasher_putc(sha1_hasher_t hasher, uint8_t byte);
void sha1_hasher_pad(sha1_hasher_t hasher);
/**
* NOTE: this will NOT return a copy of the data but
* a REFERENCE! One MUST NOT free the result.
*
* Also this modifies the state of the hasher. The
* hasher has an internal lock ensuring that writing
* to the hasher fails after this operation.
* */
uint8_t * sha1_hasher_gethash(sha1_hasher_t hasher);
#ifdef SHA1_ENABLE_HMAC
void sha1_hasher_init_hmac(sha1_hasher_t hasher, const uint8_t * key, size_t key_len);
uint8_t * sha1_hasher_gethmac(sha1_hasher_t hasher);
#endif
#endif