sunrpc/rpc/des_crypt.h

   1 /*
   2  * @(#)des_crypt.h      2.1 88/08/11 4.0 RPCSRC
   3  *
   4  * des_crypt.h, des library routine interface
   5  * Copyright (c) 2010, Oracle America, Inc.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are
   9  * met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above
  14  *       copyright notice, this list of conditions and the following
  15  *       disclaimer in the documentation and/or other materials
  16  *       provided with the distribution.
  17  *     * Neither the name of the "Oracle America, Inc." nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  25  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  26  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  28  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  30  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef __DES_CRYPT_H__
  36 #define __DES_CRYPT_H__ 1
  37
  38 #include <features.h>
  39
  40 __BEGIN_DECLS
  41
  42 #define DES_MAXDATA 8192        /* max bytes encrypted in one call */
  43 #define DES_DIRMASK (1 << 0)
  44 #define DES_ENCRYPT (0*DES_DIRMASK)     /* Encrypt */
  45 #define DES_DECRYPT (1*DES_DIRMASK)     /* Decrypt */
  46
  47
  48 #define DES_DEVMASK (1 << 1)
  49 #define DES_HW (0*DES_DEVMASK)  /* Use hardware device */
  50 #define DES_SW (1*DES_DEVMASK)  /* Use software device */
  51
  52
  53 #define DESERR_NONE 0   /* succeeded */
  54 #define DESERR_NOHWDEVICE 1     /* succeeded, but hw device not available */
  55 #define DESERR_HWERROR 2        /* failed, hardware/driver error */
  56 #define DESERR_BADPARAM 3       /* failed, bad parameter to call */
  57
  58 #define DES_FAILED(err) \
  59         ((err) > DESERR_NOHWDEVICE)
  60
  61 /*
  62  * cbc_crypt()
  63  * ecb_crypt()
  64  *
  65  * Encrypt (or decrypt) len bytes of a buffer buf.
  66  * The length must be a multiple of eight.
  67  * The key should have odd parity in the low bit of each byte.
  68  * ivec is the input vector, and is updated to the new one (cbc only).
  69  * The mode is created by oring together the appropriate parameters.
  70  * DESERR_NOHWDEVICE is returned if DES_HW was specified but
  71  * there was no hardware to do it on (the data will still be
  72  * encrypted though, in software).
  73  */
  74
  75
  76 /*
  77  * Cipher Block Chaining mode
  78  */
  79 extern int cbc_crypt (char *__key, char *__buf, unsigned __len,
  80                       unsigned __mode, char *__ivec) __THROW;
  81
  82 /*
  83  * Electronic Code Book mode
  84  */
  85 extern int ecb_crypt (char *__key, char *__buf, unsigned __len,
  86                       unsigned __mode) __THROW;
  87
  88 /*
  89  * Set des parity for a key.
  90  * DES parity is odd and in the low bit of each byte
  91  */
  92 extern void des_setparity (char *__key) __THROW;
  93
  94 __END_DECLS
  95
  96 #endif