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Diffstat (limited to 'openssl/crypto/des/ofb_enc.c')
| -rw-r--r-- | openssl/crypto/des/ofb_enc.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/openssl/crypto/des/ofb_enc.c b/openssl/crypto/des/ofb_enc.c deleted file mode 100644 index e887a3c6..00000000 --- a/openssl/crypto/des/ofb_enc.c +++ /dev/null @@ -1,135 +0,0 @@ -/* crypto/des/ofb_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.] - */ - -#include "des_locl.h" - -/* The input and output are loaded in multiples of 8 bits. - * What this means is that if you hame numbits=12 and length=2 - * the first 12 bits will be retrieved from the first byte and half - * the second. The second 12 bits will come from the 3rd and half the 4th - * byte. - */ -void DES_ofb_encrypt(const unsigned char *in, unsigned char *out, int numbits, - long length, DES_key_schedule *schedule, - DES_cblock *ivec) - { - register DES_LONG d0,d1,vv0,vv1,v0,v1,n=(numbits+7)/8; - register DES_LONG mask0,mask1; - register long l=length; - register int num=numbits; - DES_LONG ti[2]; - unsigned char *iv; - - if (num > 64) return; - if (num > 32) - { - mask0=0xffffffffL; - if (num >= 64) - mask1=mask0; - else - mask1=(1L<<(num-32))-1; - } - else - { - if (num == 32) - mask0=0xffffffffL; - else - mask0=(1L<<num)-1; - mask1=0x00000000L; - } - - iv = &(*ivec)[0]; - c2l(iv,v0); - c2l(iv,v1); - ti[0]=v0; - ti[1]=v1; - while (l-- > 0) - { - ti[0]=v0; - ti[1]=v1; - DES_encrypt1((DES_LONG *)ti,schedule,DES_ENCRYPT); - vv0=ti[0]; - vv1=ti[1]; - c2ln(in,d0,d1,n); - in+=n; - d0=(d0^vv0)&mask0; - d1=(d1^vv1)&mask1; - l2cn(d0,d1,out,n); - out+=n; - - if (num == 32) - { v0=v1; v1=vv0; } - else if (num == 64) - { v0=vv0; v1=vv1; } - else if (num > 32) /* && num != 64 */ - { - v0=((v1>>(num-32))|(vv0<<(64-num)))&0xffffffffL; - v1=((vv0>>(num-32))|(vv1<<(64-num)))&0xffffffffL; - } - else /* num < 32 */ - { - v0=((v0>>num)|(v1<<(32-num)))&0xffffffffL; - v1=((v1>>num)|(vv0<<(32-num)))&0xffffffffL; - } - } - iv = &(*ivec)[0]; - l2c(v0,iv); - l2c(v1,iv); - v0=v1=d0=d1=ti[0]=ti[1]=vv0=vv1=0; - } - |