/*

 * @(#)des_crypt.h	2.1 88/08/11 4.0 RPCSRC

 *

 * des_crypt.h, des library routine interface

 * Copyright (c) 2010, Oracle America, Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials

 *       provided with the distribution.

 *     * Neither the name of the "Oracle America, Inc." nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef __DES_CRYPT_H__

#define __DES_CRYPT_H__ 1

#include <features.h>

__BEGIN_DECLS

#define DES_MAXDATA 8192	/* max bytes encrypted in one call */

#define DES_DIRMASK (1 << 0)

#define DES_ENCRYPT (0*DES_DIRMASK)	/* Encrypt */

#define DES_DECRYPT (1*DES_DIRMASK)	/* Decrypt */

#define DES_DEVMASK (1 << 1)

#define	DES_HW (0*DES_DEVMASK)	/* Use hardware device */

#define DES_SW (1*DES_DEVMASK)	/* Use software device */

#define DESERR_NONE 0	/* succeeded */

#define DESERR_NOHWDEVICE 1	/* succeeded, but hw device not available */

#define DESERR_HWERROR 2	/* failed, hardware/driver error */

#define DESERR_BADPARAM 3	/* failed, bad parameter to call */

#define DES_FAILED(err) \

	((err) > DESERR_NOHWDEVICE)

/*

 * cbc_crypt()

 * ecb_crypt()

 *

 * Encrypt (or decrypt) len bytes of a buffer buf.

 * The length must be a multiple of eight.

 * The key should have odd parity in the low bit of each byte.

 * ivec is the input vector, and is updated to the new one (cbc only).

 * The mode is created by oring together the appropriate parameters.

 * DESERR_NOHWDEVICE is returned if DES_HW was specified but

 * there was no hardware to do it on (the data will still be

 * encrypted though, in software).

 */

/*

 * Cipher Block Chaining mode

 */

extern int cbc_crypt (char *__key, char *__buf, unsigned __len,

		      unsigned __mode, char *__ivec) __THROW;

/*

 * Electronic Code Book mode

 */

extern int ecb_crypt (char *__key, char *__buf, unsigned __len,

		      unsigned __mode) __THROW;

/*

 * Set des parity for a key.

 * DES parity is odd and in the low bit of each byte

 */

extern void des_setparity (char *__key) __THROW;

__END_DECLS

#endif