1/* 2 * Copyright (c) 2005 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#include <config.h> 35 36#ifndef HAVE_CCDESISWEAKKEY 37 38#include <sys/types.h> 39#include <stdio.h> 40#include <stdlib.h> 41#include <string.h> 42#include <errno.h> 43 44#include <krb5-types.h> 45 46#include <CommonCrypto/CommonCryptor.h> 47#include "CCDGlue.h" 48 49static uint8_t weak_keys[][8] = { 50 {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01}, /* weak keys */ 51 {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE}, 52 {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E}, 53 {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1}, 54 {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE}, /* semi-weak keys */ 55 {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01}, 56 {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1}, 57 {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E}, 58 {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1}, 59 {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01}, 60 {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE}, 61 {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E}, 62 {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E}, 63 {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01}, 64 {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE}, 65 {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1} 66}; 67 68CCCryptorStatus 69CCDesIsWeakKey(const void *key, size_t length) 70{ 71 size_t n; 72 73 if (length != 8) 74 return -1; 75 76 for (n = 0; n < sizeof(weak_keys) / sizeof(weak_keys[0]); n++) 77 if (memcmp(weak_keys[n], key, 8) == 0) 78 return -1; 79 80 return 0; 81} 82 83static uint8_t odd_parity[256] = { 84 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14, 85 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31, 86 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47, 87 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62, 88 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79, 89 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94, 90 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110, 91 112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127, 92 128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143, 93 145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158, 94 161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174, 95 176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191, 96 193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206, 97 208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223, 98 224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239, 99 241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254, 100}; 101 102void 103CCDesSetOddParity(void *key, size_t Length) 104{ 105 uint8_t *p = key; 106 size_t n; 107 108 for (n = 0; n < Length; n++) 109 p[n] = odd_parity[p[n]]; 110 111} 112 113uint32_t 114CCDesCBCCksum(void *input, void *output, 115 size_t length, void *key, size_t keylen, 116 void *ivec) 117{ 118 abort(); 119} 120 121 122#endif 123