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 97