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Diffstat (limited to 'app/openssl/crypto/des/enc_read.c')
| -rw-r--r-- | app/openssl/crypto/des/enc_read.c | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/app/openssl/crypto/des/enc_read.c b/app/openssl/crypto/des/enc_read.c deleted file mode 100644 index edb6620d..00000000 --- a/app/openssl/crypto/des/enc_read.c +++ /dev/null @@ -1,240 +0,0 @@ -/* crypto/des/enc_read.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 <stdio.h> -#include <errno.h> -#include "cryptlib.h" -#include "des_locl.h" - -/* This has some uglies in it but it works - even over sockets. */ -/*extern int errno;*/ -OPENSSL_IMPLEMENT_GLOBAL(int,DES_rw_mode,DES_PCBC_MODE) - - -/* - * WARNINGS: - * - * - The data format used by DES_enc_write() and DES_enc_read() - * has a cryptographic weakness: When asked to write more - * than MAXWRITE bytes, DES_enc_write will split the data - * into several chunks that are all encrypted - * using the same IV. So don't use these functions unless you - * are sure you know what you do (in which case you might - * not want to use them anyway). - * - * - This code cannot handle non-blocking sockets. - * - * - This function uses an internal state and thus cannot be - * used on multiple files. - */ - - -int DES_enc_read(int fd, void *buf, int len, DES_key_schedule *sched, - DES_cblock *iv) - { -#if defined(OPENSSL_NO_POSIX_IO) - return(0); -#else - /* data to be unencrypted */ - int net_num=0; - static unsigned char *net=NULL; - /* extra unencrypted data - * for when a block of 100 comes in but is des_read one byte at - * a time. */ - static unsigned char *unnet=NULL; - static int unnet_start=0; - static int unnet_left=0; - static unsigned char *tmpbuf=NULL; - int i; - long num=0,rnum; - unsigned char *p; - - if (tmpbuf == NULL) - { - tmpbuf=OPENSSL_malloc(BSIZE); - if (tmpbuf == NULL) return(-1); - } - if (net == NULL) - { - net=OPENSSL_malloc(BSIZE); - if (net == NULL) return(-1); - } - if (unnet == NULL) - { - unnet=OPENSSL_malloc(BSIZE); - if (unnet == NULL) return(-1); - } - /* left over data from last decrypt */ - if (unnet_left != 0) - { - if (unnet_left < len) - { - /* we still still need more data but will return - * with the number of bytes we have - should always - * check the return value */ - memcpy(buf,&(unnet[unnet_start]), - unnet_left); - /* eay 26/08/92 I had the next 2 lines - * reversed :-( */ - i=unnet_left; - unnet_start=unnet_left=0; - } - else - { - memcpy(buf,&(unnet[unnet_start]),len); - unnet_start+=len; - unnet_left-=len; - i=len; - } - return(i); - } - - /* We need to get more data. */ - if (len > MAXWRITE) len=MAXWRITE; - - /* first - get the length */ - while (net_num < HDRSIZE) - { -#ifndef OPENSSL_SYS_WIN32 - i=read(fd,(void *)&(net[net_num]),HDRSIZE-net_num); -#else - i=_read(fd,(void *)&(net[net_num]),HDRSIZE-net_num); -#endif -#ifdef EINTR - if ((i == -1) && (errno == EINTR)) continue; -#endif - if (i <= 0) return(0); - net_num+=i; - } - - /* we now have at net_num bytes in net */ - p=net; - /* num=0; */ - n2l(p,num); - /* num should be rounded up to the next group of eight - * we make sure that we have read a multiple of 8 bytes from the net. - */ - if ((num > MAXWRITE) || (num < 0)) /* error */ - return(-1); - rnum=(num < 8)?8:((num+7)/8*8); - - net_num=0; - while (net_num < rnum) - { -#ifndef OPENSSL_SYS_WIN32 - i=read(fd,(void *)&(net[net_num]),rnum-net_num); -#else - i=_read(fd,(void *)&(net[net_num]),rnum-net_num); -#endif -#ifdef EINTR - if ((i == -1) && (errno == EINTR)) continue; -#endif - if (i <= 0) return(0); - net_num+=i; - } - - /* Check if there will be data left over. */ - if (len < num) - { - if (DES_rw_mode & DES_PCBC_MODE) - DES_pcbc_encrypt(net,unnet,num,sched,iv,DES_DECRYPT); - else - DES_cbc_encrypt(net,unnet,num,sched,iv,DES_DECRYPT); - memcpy(buf,unnet,len); - unnet_start=len; - unnet_left=num-len; - - /* The following line is done because we return num - * as the number of bytes read. */ - num=len; - } - else - { - /* >output is a multiple of 8 byes, if len < rnum - * >we must be careful. The user must be aware that this - * >routine will write more bytes than he asked for. - * >The length of the buffer must be correct. - * FIXED - Should be ok now 18-9-90 - eay */ - if (len < rnum) - { - - if (DES_rw_mode & DES_PCBC_MODE) - DES_pcbc_encrypt(net,tmpbuf,num,sched,iv, - DES_DECRYPT); - else - DES_cbc_encrypt(net,tmpbuf,num,sched,iv, - DES_DECRYPT); - - /* eay 26/08/92 fix a bug that returned more - * bytes than you asked for (returned len bytes :-( */ - memcpy(buf,tmpbuf,num); - } - else - { - if (DES_rw_mode & DES_PCBC_MODE) - DES_pcbc_encrypt(net,buf,num,sched,iv, - DES_DECRYPT); - else - DES_cbc_encrypt(net,buf,num,sched,iv, - DES_DECRYPT); - } - } - return num; -#endif /* OPENSSL_NO_POSIX_IO */ - } - |