sha2.h

/*
  +----------------------------------------------------------------------+
  | sha2.h: APR sha256 include file                                      |
  +----------------------------------------------------------------------+
  | 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.                       |
  +----------------------------------------------------------------------+
  | Author: Aaron D. Gifford <me@aarongifford.com>                       |
  +----------------------------------------------------------------------+
  | A licence was granted to the ASF by Aaron on 4 November 2003.        |
  +----------------------------------------------------------------------+
*/

#ifndef __SHA2_H__
#define __SHA2_H__

#ifdef __cplusplus
extern "C" {
#endif

#include "apr.h"

/*** SHA-256 Various Length Definitions ***********************/
#define SHA256_BLOCK_LENGTH             64
#define SHA256_DIGEST_LENGTH            32
#define SHA256_DIGEST_STRING_LENGTH     (SHA256_DIGEST_LENGTH * 2 + 1)


/*** SHA-256/384/512 Context Structures *******************************/
typedef struct _SHA256_CTX {
        apr_uint32_t    state[8];
        apr_uint64_t    bitcount;
        apr_byte_t      buffer[SHA256_BLOCK_LENGTH];
} SHA256_CTX;


/*** SHA-256/384/512 Function Prototypes ******************************/
void apr__SHA256_Init(SHA256_CTX *);
void apr__SHA256_Update(SHA256_CTX *, const apr_byte_t *, size_t);
void apr__SHA256_Final(apr_byte_t [SHA256_DIGEST_LENGTH], SHA256_CTX *);
char* apr__SHA256_End(SHA256_CTX *, char [SHA256_DIGEST_STRING_LENGTH]);
char* apr__SHA256_Data(const apr_byte_t *, size_t,
                  char [SHA256_DIGEST_STRING_LENGTH]);

#ifdef  __cplusplus
}
#endif /* __cplusplus */

#endif /* __SHA2_H__ */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */