/* crypto/des/des_enc.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ /* * This is pared-down version of openssl's des_enc.c, shorn of * everything except the bare-bones single-block encrypt/decrypt * routine DES_encrypt1(). Plus it has the shim code needed to * use this function in CommonEncryption. */ #include <CommonCrypto/opensslDES.h> #include "ccOpenssl/des_locl.h" #include <strings.h> #include "spr.h" /* CommonCrypto shim */ int osDesSetkey(DES_key_schedule *dinst, char *key, size_t keyLength, int forEencrypt) { DES_cblock cblock; memmove(&cblock, key, 8); DES_set_key_unchecked(&cblock, dinst); return 0; } void osDesEncrypt(DES_key_schedule *ks, const_DES_cblock *input, DES_cblock *output) { /* copied from openssl's DES_ecb_encrypt() */ register DES_LONG l; DES_LONG ll[2]; const unsigned char *in = &(*input)[0]; unsigned char *out = &(*output)[0]; c2l(in,l); ll[0]=l; c2l(in,l); ll[1]=l; DES_encrypt1(ll,ks,1); l=ll[0]; l2c(l,out); l=ll[1]; l2c(l,out); l=ll[0]=ll[1]=0; } void osDesDecrypt(DES_key_schedule *ks, const_DES_cblock *input, DES_cblock *output) { /* copied from openssl's DES_ecb_encrypt() */ register DES_LONG l; DES_LONG ll[2]; const unsigned char *in = &(*input)[0]; unsigned char *out = &(*output)[0]; c2l(in,l); ll[0]=l; c2l(in,l); ll[1]=l; DES_encrypt1(ll,ks,0); l=ll[0]; l2c(l,out); l=ll[1]; l2c(l,out); l=ll[0]=ll[1]=0; } int osDes3Setkey(DES3_Schedule *dinst, char *key, size_t keyLength, int forEencrypt) { DES_cblock cblock; memmove(&cblock, key, 8); DES_set_key_unchecked(&cblock, &dinst->ks[0]); memmove(&cblock, key+8, 8); DES_set_key_unchecked(&cblock, &dinst->ks[1]); memmove(&cblock, key+16, 8); DES_set_key_unchecked(&cblock, &dinst->ks[2]); return 0; } void osDes3Encrypt(DES3_Schedule *ks, const_DES_cblock *input, DES_cblock *output) { register DES_LONG l; DES_LONG ll[2]; const unsigned char *in = &(*input)[0]; unsigned char *out = &(*output)[0]; c2l(in,l); ll[0]=l; c2l(in,l); ll[1]=l; DES_encrypt1(ll,&ks->ks[0],1); DES_encrypt1(ll,&ks->ks[1],0); DES_encrypt1(ll,&ks->ks[2],1); l=ll[0]; l2c(l,out); l=ll[1]; l2c(l,out); l=ll[0]=ll[1]=0; } void osDes3Decrypt(DES3_Schedule *ks, const_DES_cblock *input, DES_cblock *output) { register DES_LONG l; DES_LONG ll[2]; const unsigned char *in = &(*input)[0]; unsigned char *out = &(*output)[0]; c2l(in,l); ll[0]=l; c2l(in,l); ll[1]=l; DES_encrypt1(ll,&ks->ks[2],0); DES_encrypt1(ll,&ks->ks[1],1); DES_encrypt1(ll,&ks->ks[0],0); l=ll[0]; l2c(l,out); l=ll[1]; l2c(l,out); l=ll[0]=ll[1]=0; }