1 /* Copyright (C) 1995-1998 Eric Young ([email protected]) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young ([email protected]). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson ([email protected]). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young ([email protected])" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson ([email protected])" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #ifndef OPENSSL_HEADER_DES_INTERNAL_H 58 #define OPENSSL_HEADER_DES_INTERNAL_H 59 60 #include <openssl/base.h> 61 #include <openssl/des.h> 62 63 #include "../internal.h" 64 65 #if defined(__cplusplus) 66 extern "C" { 67 #endif 68 69 70 // TODO(davidben): Ideally these macros would be replaced with 71 // |CRYPTO_load_u32_le| and |CRYPTO_store_u32_le|. 72 73 #define c2l(c, l) \ 74 do { \ 75 (l) = ((uint32_t)(*((c)++))); \ 76 (l) |= ((uint32_t)(*((c)++))) << 8L; \ 77 (l) |= ((uint32_t)(*((c)++))) << 16L; \ 78 (l) |= ((uint32_t)(*((c)++))) << 24L; \ 79 } while (0) 80 81 #define l2c(l, c) \ 82 do { \ 83 *((c)++) = (unsigned char)(((l)) & 0xff); \ 84 *((c)++) = (unsigned char)(((l) >> 8L) & 0xff); \ 85 *((c)++) = (unsigned char)(((l) >> 16L) & 0xff); \ 86 *((c)++) = (unsigned char)(((l) >> 24L) & 0xff); \ 87 } while (0) 88 89 // NOTE - c is not incremented as per c2l 90 #define c2ln(c, l1, l2, n) \ 91 do { \ 92 (c) += (n); \ 93 (l1) = (l2) = 0; \ 94 switch (n) { \ 95 case 8: \ 96 (l2) = ((uint32_t)(*(--(c)))) << 24L; \ 97 OPENSSL_FALLTHROUGH; \ 98 case 7: \ 99 (l2) |= ((uint32_t)(*(--(c)))) << 16L; \ 100 OPENSSL_FALLTHROUGH; \ 101 case 6: \ 102 (l2) |= ((uint32_t)(*(--(c)))) << 8L; \ 103 OPENSSL_FALLTHROUGH; \ 104 case 5: \ 105 (l2) |= ((uint32_t)(*(--(c)))); \ 106 OPENSSL_FALLTHROUGH; \ 107 case 4: \ 108 (l1) = ((uint32_t)(*(--(c)))) << 24L; \ 109 OPENSSL_FALLTHROUGH; \ 110 case 3: \ 111 (l1) |= ((uint32_t)(*(--(c)))) << 16L; \ 112 OPENSSL_FALLTHROUGH; \ 113 case 2: \ 114 (l1) |= ((uint32_t)(*(--(c)))) << 8L; \ 115 OPENSSL_FALLTHROUGH; \ 116 case 1: \ 117 (l1) |= ((uint32_t)(*(--(c)))); \ 118 } \ 119 } while (0) 120 121 // NOTE - c is not incremented as per l2c 122 #define l2cn(l1, l2, c, n) \ 123 do { \ 124 (c) += (n); \ 125 switch (n) { \ 126 case 8: \ 127 *(--(c)) = (unsigned char)(((l2) >> 24L) & 0xff); \ 128 OPENSSL_FALLTHROUGH; \ 129 case 7: \ 130 *(--(c)) = (unsigned char)(((l2) >> 16L) & 0xff); \ 131 OPENSSL_FALLTHROUGH; \ 132 case 6: \ 133 *(--(c)) = (unsigned char)(((l2) >> 8L) & 0xff); \ 134 OPENSSL_FALLTHROUGH; \ 135 case 5: \ 136 *(--(c)) = (unsigned char)(((l2)) & 0xff); \ 137 OPENSSL_FALLTHROUGH; \ 138 case 4: \ 139 *(--(c)) = (unsigned char)(((l1) >> 24L) & 0xff); \ 140 OPENSSL_FALLTHROUGH; \ 141 case 3: \ 142 *(--(c)) = (unsigned char)(((l1) >> 16L) & 0xff); \ 143 OPENSSL_FALLTHROUGH; \ 144 case 2: \ 145 *(--(c)) = (unsigned char)(((l1) >> 8L) & 0xff); \ 146 OPENSSL_FALLTHROUGH; \ 147 case 1: \ 148 *(--(c)) = (unsigned char)(((l1)) & 0xff); \ 149 } \ 150 } while (0) 151 152 153 // Correctly-typed versions of DES functions. 154 // 155 // See https://crbug.com/boringssl/683. 156 157 void DES_set_key_ex(const uint8_t key[8], DES_key_schedule *schedule); 158 void DES_ecb_encrypt_ex(const uint8_t in[8], uint8_t out[8], 159 const DES_key_schedule *schedule, int is_encrypt); 160 void DES_ncbc_encrypt_ex(const uint8_t *in, uint8_t *out, size_t len, 161 const DES_key_schedule *schedule, uint8_t ivec[8], 162 int enc); 163 void DES_ecb3_encrypt_ex(const uint8_t input[8], uint8_t output[8], 164 const DES_key_schedule *ks1, 165 const DES_key_schedule *ks2, 166 const DES_key_schedule *ks3, int enc); 167 void DES_ede3_cbc_encrypt_ex(const uint8_t *in, uint8_t *out, size_t len, 168 const DES_key_schedule *ks1, 169 const DES_key_schedule *ks2, 170 const DES_key_schedule *ks3, uint8_t ivec[8], 171 int enc); 172 173 174 // Private functions. 175 // 176 // These functions are only exported for use in |decrepit|. 177 178 OPENSSL_EXPORT void DES_decrypt3(uint32_t data[2], const DES_key_schedule *ks1, 179 const DES_key_schedule *ks2, 180 const DES_key_schedule *ks3); 181 182 OPENSSL_EXPORT void DES_encrypt3(uint32_t data[2], const DES_key_schedule *ks1, 183 const DES_key_schedule *ks2, 184 const DES_key_schedule *ks3); 185 186 187 #if defined(__cplusplus) 188 } // extern C 189 #endif 190 191 #endif // OPENSSL_HEADER_DES_INTERNAL_H 192