sl@0: /* crypto/des/des.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include <string.h>
sl@0: #include <openssl/opensslconf.h>
sl@0: #ifndef OPENSSL_SYS_MSDOS
sl@0: #ifndef OPENSSL_SYS_VMS
sl@0: #include OPENSSL_UNISTD
sl@0: #else /* OPENSSL_SYS_VMS */
sl@0: #ifdef __DECC
sl@0: #include <unistd.h>
sl@0: #else /* not __DECC */
sl@0: #include <math.h>
sl@0: #endif /* __DECC */
sl@0: #endif /* OPENSSL_SYS_VMS */
sl@0: #else /* OPENSSL_SYS_MSDOS */
sl@0: #include <io.h>
sl@0: #endif
sl@0: 
sl@0: #include <time.h>
sl@0: #include "des_ver.h"
sl@0: 
sl@0: #ifdef OPENSSL_SYS_VMS
sl@0: #include <types.h>
sl@0: #include <stat.h>
sl@0: #else
sl@0: #ifndef _IRIX
sl@0: #include <sys/types.h>
sl@0: #endif
sl@0: #include <sys/stat.h>
sl@0: #endif
sl@0: #include <openssl/des.h>
sl@0: #include <openssl/rand.h>
sl@0: #include <openssl/ui_compat.h>
sl@0: 
sl@0: void usage(void);
sl@0: void doencryption(void);
sl@0: int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp);
sl@0: void uufwriteEnd(FILE *fp);
sl@0: int uufread(unsigned char *out,int size,unsigned int num,FILE *fp);
sl@0: int uuencode(unsigned char *in,int num,unsigned char *out);
sl@0: int uudecode(unsigned char *in,int num,unsigned char *out);
sl@0: void DES_3cbc_encrypt(DES_cblock *input,DES_cblock *output,long length,
sl@0: 	DES_key_schedule sk1,DES_key_schedule sk2,
sl@0: 	DES_cblock *ivec1,DES_cblock *ivec2,int enc);
sl@0: #ifdef OPENSSL_SYS_VMS
sl@0: #define EXIT(a) exit(a&0x10000000L)
sl@0: #else
sl@0: #define EXIT(a) exit(a)
sl@0: #endif
sl@0: 
sl@0: #define BUFSIZE (8*1024)
sl@0: #define VERIFY  1
sl@0: #define KEYSIZ	8
sl@0: #define KEYSIZB 1024 /* should hit tty line limit first :-) */
sl@0: char key[KEYSIZB+1];
sl@0: int do_encrypt,longk=0;
sl@0: FILE *DES_IN,*DES_OUT,*CKSUM_OUT;
sl@0: char uuname[200];
sl@0: unsigned char uubuf[50];
sl@0: int uubufnum=0;
sl@0: #define INUUBUFN	(45*100)
sl@0: #define OUTUUBUF	(65*100)
sl@0: unsigned char b[OUTUUBUF];
sl@0: unsigned char bb[300];
sl@0: DES_cblock cksum={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
sl@0: char cksumname[200]="";
sl@0: 
sl@0: int vflag,cflag,eflag,dflag,kflag,bflag,fflag,sflag,uflag,flag3,hflag,error;
sl@0: 
sl@0: int main(int argc, char **argv)
sl@0: 	{
sl@0: 	int i;
sl@0: 	struct stat ins,outs;
sl@0: 	char *p;
sl@0: 	char *in=NULL,*out=NULL;
sl@0: 
sl@0: 	vflag=cflag=eflag=dflag=kflag=hflag=bflag=fflag=sflag=uflag=flag3=0;
sl@0: 	error=0;
sl@0: 	memset(key,0,sizeof(key));
sl@0: 
sl@0: 	for (i=1; i<argc; i++)
sl@0: 		{
sl@0: 		p=argv[i];
sl@0: 		if ((p[0] == '-') && (p[1] != '\0'))
sl@0: 			{
sl@0: 			p++;
sl@0: 			while (*p)
sl@0: 				{
sl@0: 				switch (*(p++))
sl@0: 					{
sl@0: 				case '3':
sl@0: 					flag3=1;
sl@0: 					longk=1;
sl@0: 					break;
sl@0: 				case 'c':
sl@0: 					cflag=1;
sl@0: 					strncpy(cksumname,p,200);
sl@0: 					cksumname[sizeof(cksumname)-1]='\0';
sl@0: 					p+=strlen(cksumname);
sl@0: 					break;
sl@0: 				case 'C':
sl@0: 					cflag=1;
sl@0: 					longk=1;
sl@0: 					strncpy(cksumname,p,200);
sl@0: 					cksumname[sizeof(cksumname)-1]='\0';
sl@0: 					p+=strlen(cksumname);
sl@0: 					break;
sl@0: 				case 'e':
sl@0: 					eflag=1;
sl@0: 					break;
sl@0: 				case 'v':
sl@0: 					vflag=1;
sl@0: 					break;
sl@0: 				case 'E':
sl@0: 					eflag=1;
sl@0: 					longk=1;
sl@0: 					break;
sl@0: 				case 'd':
sl@0: 					dflag=1;
sl@0: 					break;
sl@0: 				case 'D':
sl@0: 					dflag=1;
sl@0: 					longk=1;
sl@0: 					break;
sl@0: 				case 'b':
sl@0: 					bflag=1;
sl@0: 					break;
sl@0: 				case 'f':
sl@0: 					fflag=1;
sl@0: 					break;
sl@0: 				case 's':
sl@0: 					sflag=1;
sl@0: 					break;
sl@0: 				case 'u':
sl@0: 					uflag=1;
sl@0: 					strncpy(uuname,p,200);
sl@0: 					uuname[sizeof(uuname)-1]='\0';
sl@0: 					p+=strlen(uuname);
sl@0: 					break;
sl@0: 				case 'h':
sl@0: 					hflag=1;
sl@0: 					break;
sl@0: 				case 'k':
sl@0: 					kflag=1;
sl@0: 					if ((i+1) == argc)
sl@0: 						{
sl@0: 						fputs("must have a key with the -k option\n",stderr);
sl@0: 						error=1;
sl@0: 						}
sl@0: 					else
sl@0: 						{
sl@0: 						int j;
sl@0: 
sl@0: 						i++;
sl@0: 						strncpy(key,argv[i],KEYSIZB);
sl@0: 						for (j=strlen(argv[i])-1; j>=0; j--)
sl@0: 							argv[i][j]='\0';
sl@0: 						}
sl@0: 					break;
sl@0: 				default:
sl@0: 					fprintf(stderr,"'%c' unknown flag\n",p[-1]);
sl@0: 					error=1;
sl@0: 					break;
sl@0: 					}
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			if (in == NULL)
sl@0: 				in=argv[i];
sl@0: 			else if (out == NULL)
sl@0: 				out=argv[i];
sl@0: 			else
sl@0: 				error=1;
sl@0: 			}
sl@0: 		}
sl@0: 	if (error) usage();
sl@0: 	/* We either
sl@0: 	 * do checksum or
sl@0: 	 * do encrypt or
sl@0: 	 * do decrypt or
sl@0: 	 * do decrypt then ckecksum or
sl@0: 	 * do checksum then encrypt
sl@0: 	 */
sl@0: 	if (((eflag+dflag) == 1) || cflag)
sl@0: 		{
sl@0: 		if (eflag) do_encrypt=DES_ENCRYPT;
sl@0: 		if (dflag) do_encrypt=DES_DECRYPT;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if (vflag) 
sl@0: 			{
sl@0: #ifndef _Windows			
sl@0: 			fprintf(stderr,"des(1) built with %s\n",libdes_version);
sl@0: #endif			
sl@0: 			EXIT(1);
sl@0: 			}
sl@0: 		else usage();
sl@0: 		}
sl@0: 
sl@0: #ifndef _Windows			
sl@0: 	if (vflag) fprintf(stderr,"des(1) built with %s\n",libdes_version);
sl@0: #endif			
sl@0: 	if (	(in != NULL) &&
sl@0: 		(out != NULL) &&
sl@0: #ifndef OPENSSL_SYS_MSDOS
sl@0: 		(stat(in,&ins) != -1) &&
sl@0: 		(stat(out,&outs) != -1) &&
sl@0: 		(ins.st_dev == outs.st_dev) &&
sl@0: 		(ins.st_ino == outs.st_ino))
sl@0: #else /* OPENSSL_SYS_MSDOS */
sl@0: 		(strcmp(in,out) == 0))
sl@0: #endif
sl@0: 			{
sl@0: 			fputs("input and output file are the same\n",stderr);
sl@0: 			EXIT(3);
sl@0: 			}
sl@0: 
sl@0: 	if (!kflag)
sl@0: 		if (des_read_pw_string(key,KEYSIZB+1,"Enter key:",eflag?VERIFY:0))
sl@0: 			{
sl@0: 			fputs("password error\n",stderr);
sl@0: 			EXIT(2);
sl@0: 			}
sl@0: 
sl@0: 	if (in == NULL)
sl@0: 		DES_IN=stdin;
sl@0: 	else if ((DES_IN=fopen(in,"r")) == NULL)
sl@0: 		{
sl@0: 		perror("opening input file");
sl@0: 		EXIT(4);
sl@0: 		}
sl@0: 
sl@0: 	CKSUM_OUT=stdout;
sl@0: 	if (out == NULL)
sl@0: 		{
sl@0: 		DES_OUT=stdout;
sl@0: 		CKSUM_OUT=stderr;
sl@0: 		}
sl@0: 	else if ((DES_OUT=fopen(out,"w")) == NULL)
sl@0: 		{
sl@0: 		perror("opening output file");
sl@0: 		EXIT(5);
sl@0: 		}
sl@0: 
sl@0: #ifdef OPENSSL_SYS_MSDOS
sl@0: 	/* This should set the file to binary mode. */
sl@0: 	{
sl@0: #include <fcntl.h>
sl@0: 	if (!(uflag && dflag))
sl@0: 		setmode(fileno(DES_IN),O_BINARY);
sl@0: 	if (!(uflag && eflag))
sl@0: 		setmode(fileno(DES_OUT),O_BINARY);
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: 	doencryption();
sl@0: 	fclose(DES_IN);
sl@0: 	fclose(DES_OUT);
sl@0: 	EXIT(0);
sl@0: 	}
sl@0: 
sl@0: void usage(void)
sl@0: 	{
sl@0: 	char **u;
sl@0: 	static const char *Usage[]={
sl@0: "des <options> [input-file [output-file]]",
sl@0: "options:",
sl@0: "-v         : des(1) version number",
sl@0: "-e         : encrypt using SunOS compatible user key to DES key conversion.",
sl@0: "-E         : encrypt ",
sl@0: "-d         : decrypt using SunOS compatible user key to DES key conversion.",
sl@0: "-D         : decrypt ",
sl@0: "-c[ckname] : generate a cbc_cksum using SunOS compatible user key to",
sl@0: "             DES key conversion and output to ckname (stdout default,",
sl@0: "             stderr if data being output on stdout).  The checksum is",
sl@0: "             generated before encryption and after decryption if used",
sl@0: "             in conjunction with -[eEdD].",
sl@0: "-C[ckname] : generate a cbc_cksum as for -c but compatible with -[ED].",
sl@0: "-k key     : use key 'key'",
sl@0: "-h         : the key that is entered will be a hexadecimal number",
sl@0: "             that is used directly as the des key",
sl@0: "-u[uuname] : input file is uudecoded if -[dD] or output uuencoded data if -[eE]",
sl@0: "             (uuname is the filename to put in the uuencode header).",
sl@0: "-b         : encrypt using DES in ecb encryption mode, the default is cbc mode.",
sl@0: "-3         : encrypt using triple DES encryption.  This uses 2 keys",
sl@0: "             generated from the input key.  If the input key is less",
sl@0: "             than 8 characters long, this is equivalent to normal",
sl@0: "             encryption.  Default is triple cbc, -b makes it triple ecb.",
sl@0: NULL
sl@0: };
sl@0: 	for (u=(char **)Usage; *u; u++)
sl@0: 		{
sl@0: 		fputs(*u,stderr);
sl@0: 		fputc('\n',stderr);
sl@0: 		}
sl@0: 
sl@0: 	EXIT(1);
sl@0: 	}
sl@0: 
sl@0: void doencryption(void)
sl@0: 	{
sl@0: #ifdef _LIBC
sl@0: 	extern unsigned long time();
sl@0: #endif
sl@0: 
sl@0: 	register int i;
sl@0: 	DES_key_schedule ks,ks2;
sl@0: 	DES_cblock iv,iv2;
sl@0: 	char *p;
sl@0: 	int num=0,j,k,l,rem,ll,len,last,ex=0;
sl@0: 	DES_cblock kk,k2;
sl@0: 	FILE *O;
sl@0: 	int Exit=0;
sl@0: #ifndef OPENSSL_SYS_MSDOS
sl@0: 	static unsigned char buf[BUFSIZE+8],obuf[BUFSIZE+8];
sl@0: #else
sl@0: 	static unsigned char *buf=NULL,*obuf=NULL;
sl@0: 
sl@0: 	if (buf == NULL)
sl@0: 		{
sl@0: 		if (    (( buf=OPENSSL_malloc(BUFSIZE+8)) == NULL) ||
sl@0: 			((obuf=OPENSSL_malloc(BUFSIZE+8)) == NULL))
sl@0: 			{
sl@0: 			fputs("Not enough memory\n",stderr);
sl@0: 			Exit=10;
sl@0: 			goto problems;
sl@0: 			}
sl@0: 		}
sl@0: #endif
sl@0: 
sl@0: 	if (hflag)
sl@0: 		{
sl@0: 		j=(flag3?16:8);
sl@0: 		p=key;
sl@0: 		for (i=0; i<j; i++)
sl@0: 			{
sl@0: 			k=0;
sl@0: 			if ((*p <= '9') && (*p >= '0'))
sl@0: 				k=(*p-'0')<<4;
sl@0: 			else if ((*p <= 'f') && (*p >= 'a'))
sl@0: 				k=(*p-'a'+10)<<4;
sl@0: 			else if ((*p <= 'F') && (*p >= 'A'))
sl@0: 				k=(*p-'A'+10)<<4;
sl@0: 			else
sl@0: 				{
sl@0: 				fputs("Bad hex key\n",stderr);
sl@0: 				Exit=9;
sl@0: 				goto problems;
sl@0: 				}
sl@0: 			p++;
sl@0: 			if ((*p <= '9') && (*p >= '0'))
sl@0: 				k|=(*p-'0');
sl@0: 			else if ((*p <= 'f') && (*p >= 'a'))
sl@0: 				k|=(*p-'a'+10);
sl@0: 			else if ((*p <= 'F') && (*p >= 'A'))
sl@0: 				k|=(*p-'A'+10);
sl@0: 			else
sl@0: 				{
sl@0: 				fputs("Bad hex key\n",stderr);
sl@0: 				Exit=9;
sl@0: 				goto problems;
sl@0: 				}
sl@0: 			p++;
sl@0: 			if (i < 8)
sl@0: 				kk[i]=k;
sl@0: 			else
sl@0: 				k2[i-8]=k;
sl@0: 			}
sl@0: 		DES_set_key_unchecked(&k2,&ks2);
sl@0: 		OPENSSL_cleanse(k2,sizeof(k2));
sl@0: 		}
sl@0: 	else if (longk || flag3)
sl@0: 		{
sl@0: 		if (flag3)
sl@0: 			{
sl@0: 			DES_string_to_2keys(key,&kk,&k2);
sl@0: 			DES_set_key_unchecked(&k2,&ks2);
sl@0: 			OPENSSL_cleanse(k2,sizeof(k2));
sl@0: 			}
sl@0: 		else
sl@0: 			DES_string_to_key(key,&kk);
sl@0: 		}
sl@0: 	else
sl@0: 		for (i=0; i<KEYSIZ; i++)
sl@0: 			{
sl@0: 			l=0;
sl@0: 			k=key[i];
sl@0: 			for (j=0; j<8; j++)
sl@0: 				{
sl@0: 				if (k&1) l++;
sl@0: 				k>>=1;
sl@0: 				}
sl@0: 			if (l & 1)
sl@0: 				kk[i]=key[i]&0x7f;
sl@0: 			else
sl@0: 				kk[i]=key[i]|0x80;
sl@0: 			}
sl@0: 
sl@0: 	DES_set_key_unchecked(&kk,&ks);
sl@0: 	OPENSSL_cleanse(key,sizeof(key));
sl@0: 	OPENSSL_cleanse(kk,sizeof(kk));
sl@0: 	/* woops - A bug that does not showup under unix :-( */
sl@0: 	memset(iv,0,sizeof(iv));
sl@0: 	memset(iv2,0,sizeof(iv2));
sl@0: 
sl@0: 	l=1;
sl@0: 	rem=0;
sl@0: 	/* first read */
sl@0: 	if (eflag || (!dflag && cflag))
sl@0: 		{
sl@0: 		for (;;)
sl@0: 			{
sl@0: 			num=l=fread(&(buf[rem]),1,BUFSIZE,DES_IN);
sl@0: 			l+=rem;
sl@0: 			num+=rem;
sl@0: 			if (l < 0)
sl@0: 				{
sl@0: 				perror("read error");
sl@0: 				Exit=6;
sl@0: 				goto problems;
sl@0: 				}
sl@0: 
sl@0: 			rem=l%8;
sl@0: 			len=l-rem;
sl@0: 			if (feof(DES_IN))
sl@0: 				{
sl@0: 				for (i=7-rem; i>0; i--)
sl@0: 					RAND_pseudo_bytes(buf + l++, 1);
sl@0: 				buf[l++]=rem;
sl@0: 				ex=1;
sl@0: 				len+=rem;
sl@0: 				}
sl@0: 			else
sl@0: 				l-=rem;
sl@0: 
sl@0: 			if (cflag)
sl@0: 				{
sl@0: 				DES_cbc_cksum(buf,&cksum,
sl@0: 					(long)len,&ks,&cksum);
sl@0: 				if (!eflag)
sl@0: 					{
sl@0: 					if (feof(DES_IN)) break;
sl@0: 					else continue;
sl@0: 					}
sl@0: 				}
sl@0: 
sl@0: 			if (bflag && !flag3)
sl@0: 				for (i=0; i<l; i+=8)
sl@0: 					DES_ecb_encrypt(
sl@0: 						(DES_cblock *)&(buf[i]),
sl@0: 						(DES_cblock *)&(obuf[i]),
sl@0: 						&ks,do_encrypt);
sl@0: 			else if (flag3 && bflag)
sl@0: 				for (i=0; i<l; i+=8)
sl@0: 					DES_ecb2_encrypt(
sl@0: 						(DES_cblock *)&(buf[i]),
sl@0: 						(DES_cblock *)&(obuf[i]),
sl@0: 						&ks,&ks2,do_encrypt);
sl@0: 			else if (flag3 && !bflag)
sl@0: 				{
sl@0: 				char tmpbuf[8];
sl@0: 
sl@0: 				if (rem) memcpy(tmpbuf,&(buf[l]),
sl@0: 					(unsigned int)rem);
sl@0: 				DES_3cbc_encrypt(
sl@0: 					(DES_cblock *)buf,(DES_cblock *)obuf,
sl@0: 					(long)l,ks,ks2,&iv,
sl@0: 					&iv2,do_encrypt);
sl@0: 				if (rem) memcpy(&(buf[l]),tmpbuf,
sl@0: 					(unsigned int)rem);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				DES_cbc_encrypt(
sl@0: 					buf,obuf,
sl@0: 					(long)l,&ks,&iv,do_encrypt);
sl@0: 				if (l >= 8) memcpy(iv,&(obuf[l-8]),8);
sl@0: 				}
sl@0: 			if (rem) memcpy(buf,&(buf[l]),(unsigned int)rem);
sl@0: 
sl@0: 			i=0;
sl@0: 			while (i < l)
sl@0: 				{
sl@0: 				if (uflag)
sl@0: 					j=uufwrite(obuf,1,(unsigned int)l-i,
sl@0: 						DES_OUT);
sl@0: 				else
sl@0: 					j=fwrite(obuf,1,(unsigned int)l-i,
sl@0: 						DES_OUT);
sl@0: 				if (j == -1)
sl@0: 					{
sl@0: 					perror("Write error");
sl@0: 					Exit=7;
sl@0: 					goto problems;
sl@0: 					}
sl@0: 				i+=j;
sl@0: 				}
sl@0: 			if (feof(DES_IN))
sl@0: 				{
sl@0: 				if (uflag) uufwriteEnd(DES_OUT);
sl@0: 				break;
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	else /* decrypt */
sl@0: 		{
sl@0: 		ex=1;
sl@0: 		for (;;)
sl@0: 			{
sl@0: 			if (ex) {
sl@0: 				if (uflag)
sl@0: 					l=uufread(buf,1,BUFSIZE,DES_IN);
sl@0: 				else
sl@0: 					l=fread(buf,1,BUFSIZE,DES_IN);
sl@0: 				ex=0;
sl@0: 				rem=l%8;
sl@0: 				l-=rem;
sl@0: 				}
sl@0: 			if (l < 0)
sl@0: 				{
sl@0: 				perror("read error");
sl@0: 				Exit=6;
sl@0: 				goto problems;
sl@0: 				}
sl@0: 
sl@0: 			if (bflag && !flag3)
sl@0: 				for (i=0; i<l; i+=8)
sl@0: 					DES_ecb_encrypt(
sl@0: 						(DES_cblock *)&(buf[i]),
sl@0: 						(DES_cblock *)&(obuf[i]),
sl@0: 						&ks,do_encrypt);
sl@0: 			else if (flag3 && bflag)
sl@0: 				for (i=0; i<l; i+=8)
sl@0: 					DES_ecb2_encrypt(
sl@0: 						(DES_cblock *)&(buf[i]),
sl@0: 						(DES_cblock *)&(obuf[i]),
sl@0: 						&ks,&ks2,do_encrypt);
sl@0: 			else if (flag3 && !bflag)
sl@0: 				{
sl@0: 				DES_3cbc_encrypt(
sl@0: 					(DES_cblock *)buf,(DES_cblock *)obuf,
sl@0: 					(long)l,ks,ks2,&iv,
sl@0: 					&iv2,do_encrypt);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				DES_cbc_encrypt(
sl@0: 					buf,obuf,
sl@0: 				 	(long)l,&ks,&iv,do_encrypt);
sl@0: 				if (l >= 8) memcpy(iv,&(buf[l-8]),8);
sl@0: 				}
sl@0: 
sl@0: 			if (uflag)
sl@0: 				ll=uufread(&(buf[rem]),1,BUFSIZE,DES_IN);
sl@0: 			else
sl@0: 				ll=fread(&(buf[rem]),1,BUFSIZE,DES_IN);
sl@0: 			ll+=rem;
sl@0: 			rem=ll%8;
sl@0: 			ll-=rem;
sl@0: 			if (feof(DES_IN) && (ll == 0))
sl@0: 				{
sl@0: 				last=obuf[l-1];
sl@0: 
sl@0: 				if ((last > 7) || (last < 0))
sl@0: 					{
sl@0: 					fputs("The file was not decrypted correctly.\n",
sl@0: 						stderr);
sl@0: 					Exit=8;
sl@0: 					last=0;
sl@0: 					}
sl@0: 				l=l-8+last;
sl@0: 				}
sl@0: 			i=0;
sl@0: 			if (cflag) DES_cbc_cksum(obuf,
sl@0: 				(DES_cblock *)cksum,(long)l/8*8,&ks,
sl@0: 				(DES_cblock *)cksum);
sl@0: 			while (i != l)
sl@0: 				{
sl@0: 				j=fwrite(obuf,1,(unsigned int)l-i,DES_OUT);
sl@0: 				if (j == -1)
sl@0: 					{
sl@0: 					perror("Write error");
sl@0: 					Exit=7;
sl@0: 					goto problems;
sl@0: 					}
sl@0: 				i+=j;
sl@0: 				}
sl@0: 			l=ll;
sl@0: 			if ((l == 0) && feof(DES_IN)) break;
sl@0: 			}
sl@0: 		}
sl@0: 	if (cflag)
sl@0: 		{
sl@0: 		l=0;
sl@0: 		if (cksumname[0] != '\0')
sl@0: 			{
sl@0: 			if ((O=fopen(cksumname,"w")) != NULL)
sl@0: 				{
sl@0: 				CKSUM_OUT=O;
sl@0: 				l=1;
sl@0: 				}
sl@0: 			}
sl@0: 		for (i=0; i<8; i++)
sl@0: 			fprintf(CKSUM_OUT,"%02X",cksum[i]);
sl@0: 		fprintf(CKSUM_OUT,"\n");
sl@0: 		if (l) fclose(CKSUM_OUT);
sl@0: 		}
sl@0: problems:
sl@0: 	OPENSSL_cleanse(buf,sizeof(buf));
sl@0: 	OPENSSL_cleanse(obuf,sizeof(obuf));
sl@0: 	OPENSSL_cleanse(&ks,sizeof(ks));
sl@0: 	OPENSSL_cleanse(&ks2,sizeof(ks2));
sl@0: 	OPENSSL_cleanse(iv,sizeof(iv));
sl@0: 	OPENSSL_cleanse(iv2,sizeof(iv2));
sl@0: 	OPENSSL_cleanse(kk,sizeof(kk));
sl@0: 	OPENSSL_cleanse(k2,sizeof(k2));
sl@0: 	OPENSSL_cleanse(uubuf,sizeof(uubuf));
sl@0: 	OPENSSL_cleanse(b,sizeof(b));
sl@0: 	OPENSSL_cleanse(bb,sizeof(bb));
sl@0: 	OPENSSL_cleanse(cksum,sizeof(cksum));
sl@0: 	if (Exit) EXIT(Exit);
sl@0: 	}
sl@0: 
sl@0: /*    We ignore this parameter but it should be > ~50 I believe    */
sl@0: int uufwrite(unsigned char *data, int size, unsigned int num, FILE *fp)
sl@0: 	{
sl@0: 	int i,j,left,rem,ret=num;
sl@0: 	static int start=1;
sl@0: 
sl@0: 	if (start)
sl@0: 		{
sl@0: 		fprintf(fp,"begin 600 %s\n",
sl@0: 			(uuname[0] == '\0')?"text.d":uuname);
sl@0: 		start=0;
sl@0: 		}
sl@0: 
sl@0: 	if (uubufnum)
sl@0: 		{
sl@0: 		if (uubufnum+num < 45)
sl@0: 			{
sl@0: 			memcpy(&(uubuf[uubufnum]),data,(unsigned int)num);
sl@0: 			uubufnum+=num;
sl@0: 			return(num);
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			i=45-uubufnum;
sl@0: 			memcpy(&(uubuf[uubufnum]),data,(unsigned int)i);
sl@0: 			j=uuencode((unsigned char *)uubuf,45,b);
sl@0: 			fwrite(b,1,(unsigned int)j,fp);
sl@0: 			uubufnum=0;
sl@0: 			data+=i;
sl@0: 			num-=i;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	for (i=0; i<(((int)num)-INUUBUFN); i+=INUUBUFN)
sl@0: 		{
sl@0: 		j=uuencode(&(data[i]),INUUBUFN,b);
sl@0: 		fwrite(b,1,(unsigned int)j,fp);
sl@0: 		}
sl@0: 	rem=(num-i)%45;
sl@0: 	left=(num-i-rem);
sl@0: 	if (left)
sl@0: 		{
sl@0: 		j=uuencode(&(data[i]),left,b);
sl@0: 		fwrite(b,1,(unsigned int)j,fp);
sl@0: 		i+=left;
sl@0: 		}
sl@0: 	if (i != num)
sl@0: 		{
sl@0: 		memcpy(uubuf,&(data[i]),(unsigned int)rem);
sl@0: 		uubufnum=rem;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: void uufwriteEnd(FILE *fp)
sl@0: 	{
sl@0: 	int j;
sl@0: 	static const char *end=" \nend\n";
sl@0: 
sl@0: 	if (uubufnum != 0)
sl@0: 		{
sl@0: 		uubuf[uubufnum]='\0';
sl@0: 		uubuf[uubufnum+1]='\0';
sl@0: 		uubuf[uubufnum+2]='\0';
sl@0: 		j=uuencode(uubuf,uubufnum,b);
sl@0: 		fwrite(b,1,(unsigned int)j,fp);
sl@0: 		}
sl@0: 	fwrite(end,1,strlen(end),fp);
sl@0: 	}
sl@0: 
sl@0: /* int size:  should always be > ~ 60; I actually ignore this parameter :-)    */
sl@0: int uufread(unsigned char *out, int size, unsigned int num, FILE *fp)
sl@0: 	{
sl@0: 	int i,j,tot;
sl@0: 	static int done=0;
sl@0: 	static int valid=0;
sl@0: 	static int start=1;
sl@0: 
sl@0: 	if (start)
sl@0: 		{
sl@0: 		for (;;)
sl@0: 			{
sl@0: 			b[0]='\0';
sl@0: 			fgets((char *)b,300,fp);
sl@0: 			if (b[0] == '\0')
sl@0: 				{
sl@0: 				fprintf(stderr,"no 'begin' found in uuencoded input\n");
sl@0: 				return(-1);
sl@0: 				}
sl@0: 			if (strncmp((char *)b,"begin ",6) == 0) break;
sl@0: 			}
sl@0: 		start=0;
sl@0: 		}
sl@0: 	if (done) return(0);
sl@0: 	tot=0;
sl@0: 	if (valid)
sl@0: 		{
sl@0: 		memcpy(out,bb,(unsigned int)valid);
sl@0: 		tot=valid;
sl@0: 		valid=0;
sl@0: 		}
sl@0: 	for (;;)
sl@0: 		{
sl@0: 		b[0]='\0';
sl@0: 		fgets((char *)b,300,fp);
sl@0: 		if (b[0] == '\0') break;
sl@0: 		i=strlen((char *)b);
sl@0: 		if ((b[0] == 'e') && (b[1] == 'n') && (b[2] == 'd'))
sl@0: 			{
sl@0: 			done=1;
sl@0: 			while (!feof(fp))
sl@0: 				{
sl@0: 				fgets((char *)b,300,fp);
sl@0: 				}
sl@0: 			break;
sl@0: 			}
sl@0: 		i=uudecode(b,i,bb);
sl@0: 		if (i < 0) break;
sl@0: 		if ((i+tot+8) > num)
sl@0: 			{
sl@0: 			/* num to copy to make it a multiple of 8 */
sl@0: 			j=(num/8*8)-tot-8;
sl@0: 			memcpy(&(out[tot]),bb,(unsigned int)j);
sl@0: 			tot+=j;
sl@0: 			memcpy(bb,&(bb[j]),(unsigned int)i-j);
sl@0: 			valid=i-j;
sl@0: 			break;
sl@0: 			}
sl@0: 		memcpy(&(out[tot]),bb,(unsigned int)i);
sl@0: 		tot+=i;
sl@0: 		}
sl@0: 	return(tot);
sl@0: 	}
sl@0: 
sl@0: #define ccc2l(c,l)      (l =((DES_LONG)(*((c)++)))<<16, \
sl@0: 			 l|=((DES_LONG)(*((c)++)))<< 8, \
sl@0: 		 	 l|=((DES_LONG)(*((c)++))))
sl@0: 
sl@0: #define l2ccc(l,c)      (*((c)++)=(unsigned char)(((l)>>16)&0xff), \
sl@0:                     *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
sl@0:                     *((c)++)=(unsigned char)(((l)    )&0xff))
sl@0: 
sl@0: 
sl@0: int uuencode(unsigned char *in, int num, unsigned char *out)
sl@0: 	{
sl@0: 	int j,i,n,tot=0;
sl@0: 	DES_LONG l;
sl@0: 	register unsigned char *p;
sl@0: 	p=out;
sl@0: 
sl@0: 	for (j=0; j<num; j+=45)
sl@0: 		{
sl@0: 		if (j+45 > num)
sl@0: 			i=(num-j);
sl@0: 		else	i=45;
sl@0: 		*(p++)=i+' ';
sl@0: 		for (n=0; n<i; n+=3)
sl@0: 			{
sl@0: 			ccc2l(in,l);
sl@0: 			*(p++)=((l>>18)&0x3f)+' ';
sl@0: 			*(p++)=((l>>12)&0x3f)+' ';
sl@0: 			*(p++)=((l>> 6)&0x3f)+' ';
sl@0: 			*(p++)=((l    )&0x3f)+' ';
sl@0: 			tot+=4;
sl@0: 			}
sl@0: 		*(p++)='\n';
sl@0: 		tot+=2;
sl@0: 		}
sl@0: 	*p='\0';
sl@0: 	l=0;
sl@0: 	return(tot);
sl@0: 	}
sl@0: 
sl@0: int uudecode(unsigned char *in, int num, unsigned char *out)
sl@0: 	{
sl@0: 	int j,i,k;
sl@0: 	unsigned int n=0,space=0;
sl@0: 	DES_LONG l;
sl@0: 	DES_LONG w,x,y,z;
sl@0: 	unsigned int blank=(unsigned int)'\n'-' ';
sl@0: 
sl@0: 	for (j=0; j<num; )
sl@0: 		{
sl@0: 		n= *(in++)-' ';
sl@0: 		if (n == blank)
sl@0: 			{
sl@0: 			n=0;
sl@0: 			in--;
sl@0: 			}
sl@0: 		if (n > 60)
sl@0: 			{
sl@0: 			fprintf(stderr,"uuencoded line length too long\n");
sl@0: 			return(-1);
sl@0: 			}
sl@0: 		j++;
sl@0: 
sl@0: 		for (i=0; i<n; j+=4,i+=3)
sl@0: 			{
sl@0: 			/* the following is for cases where spaces are
sl@0: 			 * removed from lines.
sl@0: 			 */
sl@0: 			if (space)
sl@0: 				{
sl@0: 				w=x=y=z=0;
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				w= *(in++)-' ';
sl@0: 				x= *(in++)-' ';
sl@0: 				y= *(in++)-' ';
sl@0: 				z= *(in++)-' ';
sl@0: 				}
sl@0: 			if ((w > 63) || (x > 63) || (y > 63) || (z > 63))
sl@0: 				{
sl@0: 				k=0;
sl@0: 				if (w == blank) k=1;
sl@0: 				if (x == blank) k=2;
sl@0: 				if (y == blank) k=3;
sl@0: 				if (z == blank) k=4;
sl@0: 				space=1;
sl@0: 				switch (k) {
sl@0: 				case 1:	w=0; in--;
sl@0: 				case 2: x=0; in--;
sl@0: 				case 3: y=0; in--;
sl@0: 				case 4: z=0; in--;
sl@0: 					break;
sl@0: 				case 0:
sl@0: 					space=0;
sl@0: 					fprintf(stderr,"bad uuencoded data values\n");
sl@0: 					w=x=y=z=0;
sl@0: 					return(-1);
sl@0: 					break;
sl@0: 					}
sl@0: 				}
sl@0: 			l=(w<<18)|(x<<12)|(y<< 6)|(z    );
sl@0: 			l2ccc(l,out);
sl@0: 			}
sl@0: 		if (*(in++) != '\n')
sl@0: 			{
sl@0: 			fprintf(stderr,"missing nl in uuencoded line\n");
sl@0: 			w=x=y=z=0;
sl@0: 			return(-1);
sl@0: 			}
sl@0: 		j++;
sl@0: 		}
sl@0: 	*out='\0';
sl@0: 	w=x=y=z=0;
sl@0: 	return(n);
sl@0: 	}