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100 lines
4.3 KiB
100 lines
4.3 KiB
/* crypto/des/rpc_enc.c */ |
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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* All rights reserved. |
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* |
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* This package is an SSL implementation written |
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* by Eric Young (eay@cryptsoft.com). |
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* The implementation was written so as to conform with Netscapes SSL. |
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* |
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* This library is free for commercial and non-commercial use as long as |
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* the following conditions are aheared to. The following conditions |
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* apply to all code found in this distribution, be it the RC4, RSA, |
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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* included with this distribution is covered by the same copyright terms |
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* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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* |
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* Copyright remains Eric Young's, and as such any Copyright notices in |
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* the code are not to be removed. |
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* If this package is used in a product, Eric Young should be given attribution |
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* as the author of the parts of the library used. |
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* This can be in the form of a textual message at program startup or |
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* in documentation (online or textual) provided with the package. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* "This product includes cryptographic software written by |
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* Eric Young (eay@cryptsoft.com)" |
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* The word 'cryptographic' can be left out if the rouines from the library |
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* being used are not cryptographic related :-). |
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* 4. If you include any Windows specific code (or a derivative thereof) from |
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* the apps directory (application code) you must include an acknowledgement: |
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* The licence and distribution terms for any publically available version or |
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* derivative of this code cannot be changed. i.e. this code cannot simply be |
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* copied and put under another distribution licence |
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* [including the GNU Public Licence.] |
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*/ |
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#include "rpc_des.h" |
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#include "des_locl.h" |
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#include "des_ver.h" |
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int _des_crypt(char *buf, int len, struct desparams *desp); |
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int _des_crypt(char *buf, int len, struct desparams *desp) |
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{ |
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DES_key_schedule ks; |
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int enc; |
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DES_set_key_unchecked(&desp->des_key, &ks); |
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enc = (desp->des_dir == ENCRYPT) ? DES_ENCRYPT : DES_DECRYPT; |
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if (desp->des_mode == CBC) |
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DES_ecb_encrypt((const_DES_cblock *)desp->UDES.UDES_buf, |
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(DES_cblock *)desp->UDES.UDES_buf, &ks, enc); |
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else { |
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DES_ncbc_encrypt(desp->UDES.UDES_buf, desp->UDES.UDES_buf, |
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len, &ks, &desp->des_ivec, enc); |
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#ifdef undef |
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/* |
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* len will always be %8 if called from common_crypt in secure_rpc. |
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* Libdes's cbc encrypt does not copy back the iv, so we have to do |
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* it here. |
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*/ |
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/* It does now :-) eay 20/09/95 */ |
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a = (char *)&(desp->UDES.UDES_buf[len - 8]); |
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b = (char *)&(desp->des_ivec[0]); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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*(a++) = *(b++); |
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#endif |
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} |
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return (1); |
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}
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