[thirdparty/openssl.git] / apps / enc.c

/* apps/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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_MD5
#include <openssl/md5.h>
#endif
#include <openssl/pem.h>
#include <openssl/engine.h>
#include <ctype.h>

int set_hex(char *in,unsigned char *out,int size);
#undef SIZE
#undef BSIZE
#undef PROG

#define SIZE	(512)
#define BSIZE	(8*1024)
#define	PROG	enc_main

void show_ciphers(const OBJ_NAME *name,void *bio_)
	{
	BIO *bio=bio_;
	static int n;

	if(!islower((unsigned char)*name->name))
		return;

	BIO_printf(bio,"-%-25s",name->name);
	if(++n == 3)
		{
		BIO_printf(bio,"\n");
		n=0;
		}
	else
		BIO_printf(bio," ");
	}

int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	ENGINE *e = NULL;
	static const char magic[]="Salted__";
	char mbuf[8];	/* should be 1 smaller than magic */
	char *strbuf=NULL;
	unsigned char *buff=NULL,*bufsize=NULL;
	int bsize=BSIZE,verbose=0;
	int ret=1,inl;
	int nopad = 0;
	unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
	unsigned char salt[PKCS5_SALT_LEN];
	char *str=NULL, *passarg = NULL, *pass = NULL;
	char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
	int enc=1,printkey=0,i,base64=0;
	int debug=0,olb64=0,nosalt=0;
	const EVP_CIPHER *cipher=NULL,*c;
	char *inf=NULL,*outf=NULL;
	BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
#define PROG_NAME_SIZE  16
	char pname[PROG_NAME_SIZE];
	char *engine = NULL;

	apps_startup();

	if (bio_err == NULL)
		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);

	/* first check the program name */
	program_name(argv[0],pname,PROG_NAME_SIZE);
	if (strcmp(pname,"base64") == 0)
		base64=1;

	cipher=EVP_get_cipherbyname(pname);
	if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
		{
		BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
		goto bad;
		}

	argc--;
	argv++;
	while (argc >= 1)
		{
		if	(strcmp(*argv,"-e") == 0)
			enc=1;
		else if (strcmp(*argv,"-in") == 0)
			{
			if (--argc < 1) goto bad;
			inf= *(++argv);
			}
		else if (strcmp(*argv,"-out") == 0)
			{
			if (--argc < 1) goto bad;
			outf= *(++argv);
			}
		else if (strcmp(*argv,"-pass") == 0)
			{
			if (--argc < 1) goto bad;
			passarg= *(++argv);
			}
		else if (strcmp(*argv,"-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine= *(++argv);
			}
		else if	(strcmp(*argv,"-d") == 0)
			enc=0;
		else if	(strcmp(*argv,"-p") == 0)
			printkey=1;
		else if	(strcmp(*argv,"-v") == 0)
			verbose=1;
		else if	(strcmp(*argv,"-nopad") == 0)
			nopad=1;
		else if	(strcmp(*argv,"-salt") == 0)
			nosalt=0;
		else if	(strcmp(*argv,"-nosalt") == 0)
			nosalt=1;
		else if	(strcmp(*argv,"-debug") == 0)
			debug=1;
		else if	(strcmp(*argv,"-P") == 0)
			printkey=2;
		else if	(strcmp(*argv,"-A") == 0)
			olb64=1;
		else if	(strcmp(*argv,"-a") == 0)
			base64=1;
		else if	(strcmp(*argv,"-base64") == 0)
			base64=1;
		else if (strcmp(*argv,"-bufsize") == 0)
			{
			if (--argc < 1) goto bad;
			bufsize=(unsigned char *)*(++argv);
			}
		else if (strcmp(*argv,"-k") == 0)
			{
			if (--argc < 1) goto bad;
			str= *(++argv);
			}
		else if (strcmp(*argv,"-kfile") == 0)
			{
			static char buf[128];
			FILE *infile;
			char *file;

			if (--argc < 1) goto bad;
			file= *(++argv);
			infile=fopen(file,"r");
			if (infile == NULL)
				{
				BIO_printf(bio_err,"unable to read key from '%s'\n",
					file);
				goto bad;
				}
			buf[0]='\0';
			fgets(buf,128,infile);
			fclose(infile);
			i=strlen(buf);
			if ((i > 0) &&
				((buf[i-1] == '\n') || (buf[i-1] == '\r')))
				buf[--i]='\0';
			if ((i > 0) &&
				((buf[i-1] == '\n') || (buf[i-1] == '\r')))
				buf[--i]='\0';
			if (i < 1)
				{
				BIO_printf(bio_err,"zero length password\n");
				goto bad;
				}
			str=buf;
			}
		else if (strcmp(*argv,"-K") == 0)
			{
			if (--argc < 1) goto bad;
			hkey= *(++argv);
			}
		else if (strcmp(*argv,"-S") == 0)
			{
			if (--argc < 1) goto bad;
			hsalt= *(++argv);
			}
		else if (strcmp(*argv,"-iv") == 0)
			{
			if (--argc < 1) goto bad;
			hiv= *(++argv);
			}
		else if	((argv[0][0] == '-') &&
			((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
			{
			cipher=c;
			}
		else if (strcmp(*argv,"-none") == 0)
			cipher=NULL;
		else
			{
			BIO_printf(bio_err,"unknown option '%s'\n",*argv);
bad:
			BIO_printf(bio_err,"options are\n");
			BIO_printf(bio_err,"%-14s input file\n","-in <file>");
			BIO_printf(bio_err,"%-14s output file\n","-out <file>");
			BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
			BIO_printf(bio_err,"%-14s encrypt\n","-e");
			BIO_printf(bio_err,"%-14s decrypt\n","-d");
			BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
			BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
			BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
			BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
			BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
			BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
			BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");

			BIO_printf(bio_err,"Cipher Types\n");
			OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
					       show_ciphers,
					       bio_err);
			BIO_printf(bio_err,"\n");

			goto end;
			}
		argc--;
		argv++;
		}

	if (engine != NULL)
		{
		if((e = ENGINE_by_id(engine)) == NULL)
			{
			BIO_printf(bio_err,"invalid engine \"%s\"\n",
				engine);
			goto end;
			}
		if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
			{
			BIO_printf(bio_err,"can't use that engine\n");
			goto end;
			}
		BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
		/* Free our "structural" reference. */
		ENGINE_free(e);
		}

	if (bufsize != NULL)
		{
		unsigned long n;

		for (n=0; *bufsize; bufsize++)
			{
			i= *bufsize;
			if ((i <= '9') && (i >= '0'))
				n=n*10+i-'0';
			else if (i == 'k')
				{
				n*=1024;
				bufsize++;
				break;
				}
			}
		if (*bufsize != '\0')
			{
			BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
			goto end;
			}

		/* It must be large enough for a base64 encoded line */
		if (n < 80) n=80;

		bsize=(int)n;
		if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
		}

	strbuf=OPENSSL_malloc(SIZE);
	buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
	if ((buff == NULL) || (strbuf == NULL))
		{
		BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
		goto end;
		}

	in=BIO_new(BIO_s_file());
	out=BIO_new(BIO_s_file());
	if ((in == NULL) || (out == NULL))
		{
		ERR_print_errors(bio_err);
		goto end;
		}
	if (debug)
		{
		BIO_set_callback(in,BIO_debug_callback);
		BIO_set_callback(out,BIO_debug_callback);
		BIO_set_callback_arg(in,bio_err);
		BIO_set_callback_arg(out,bio_err);
		}

	if (inf == NULL)
		BIO_set_fp(in,stdin,BIO_NOCLOSE);
	else
		{
		if (BIO_read_filename(in,inf) <= 0)
			{
			perror(inf);
			goto end;
			}
		}

	if(!str && passarg) {
		if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
			BIO_printf(bio_err, "Error getting password\n");
			goto end;
		}
		str = pass;
	}

	if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
		{
		for (;;)
			{
			char buf[200];

			sprintf(buf,"enter %s %s password:",
				OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
				(enc)?"encryption":"decryption");
			strbuf[0]='\0';
			i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
			if (i == 0)
				{
				if (strbuf[0] == '\0')
					{
					ret=1;
					goto end;
					}
				str=strbuf;
				break;
				}
			if (i < 0)
				{
				BIO_printf(bio_err,"bad password read\n");
				goto end;
				}
			}
		}


	if (outf == NULL)
		{
		BIO_set_fp(out,stdout,BIO_NOCLOSE);
#ifdef VMS
		{
		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
		out = BIO_push(tmpbio, out);
		}
#endif
		}
	else
		{
		if (BIO_write_filename(out,outf) <= 0)
			{
			perror(outf);
			goto end;
			}
		}

	rbio=in;
	wbio=out;

	if (base64)
		{
		if ((b64=BIO_new(BIO_f_base64())) == NULL)
			goto end;
		if (debug)
			{
			BIO_set_callback(b64,BIO_debug_callback);
			BIO_set_callback_arg(b64,bio_err);
			}
		if (olb64)
			BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
		if (enc)
			wbio=BIO_push(b64,wbio);
		else
			rbio=BIO_push(b64,rbio);
		}

	if (cipher != NULL)
		{
		/* Note that str is NULL if a key was passed on the command
		 * line, so we get no salt in that case. Is this a bug?
		 */
		if (str != NULL)
			{
			/* Salt handling: if encrypting generate a salt and
			 * write to output BIO. If decrypting read salt from
			 * input BIO.
			 */
			unsigned char *sptr;
			if(nosalt) sptr = NULL;
			else {
				if(enc) {
					if(hsalt) {
						if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
							BIO_printf(bio_err,
								"invalid hex salt value\n");
							goto end;
						}
					} else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
						goto end;
					/* If -P option then don't bother writing */
					if((printkey != 2)
					   && (BIO_write(wbio,magic,
							 sizeof magic-1) != sizeof magic-1
					       || BIO_write(wbio,
							    (char *)salt,
							    PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
						BIO_printf(bio_err,"error writing output file\n");
						goto end;
					}
				} else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
					  || BIO_read(rbio,
						      (unsigned char *)salt,
				    PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
					BIO_printf(bio_err,"error reading input file\n");
					goto end;
				} else if(memcmp(mbuf,magic,sizeof magic-1)) {
				    BIO_printf(bio_err,"bad magic number\n");
				    goto end;
				}

				sptr = salt;
			}

			EVP_BytesToKey(cipher,EVP_md5(),sptr,
				(unsigned char *)str,
				strlen(str),1,key,iv);
			/* zero the complete buffer or the string
			 * passed from the command line
			 * bug picked up by
			 * Larry J. Hughes Jr. <hughes@indiana.edu> */
			if (str == strbuf)
				memset(str,0,SIZE);
			else
				memset(str,0,strlen(str));
			}
		if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
			{
			BIO_printf(bio_err,"invalid hex iv value\n");
			goto end;
			}
		if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
			{
			BIO_printf(bio_err,"invalid hex key value\n");
			goto end;
			}

		if ((benc=BIO_new(BIO_f_cipher())) == NULL)
			goto end;
		BIO_set_cipher(benc,cipher,key,iv,enc);
		if (nopad)
			{
			EVP_CIPHER_CTX *ctx;
			BIO_get_cipher_ctx(benc, &ctx);
			EVP_CIPHER_CTX_set_padding(ctx, 0);
			}
		if (debug)
			{
			BIO_set_callback(benc,BIO_debug_callback);
			BIO_set_callback_arg(benc,bio_err);
			}

		if (printkey)
			{
			if (!nosalt)
				{
				printf("salt=");
				for (i=0; i<PKCS5_SALT_LEN; i++)
					printf("%02X",salt[i]);
				printf("\n");
				}
			if (cipher->key_len > 0)
				{
				printf("key=");
				for (i=0; i<cipher->key_len; i++)
					printf("%02X",key[i]);
				printf("\n");
				}
			if (cipher->iv_len > 0)
				{
				printf("iv =");
				for (i=0; i<cipher->iv_len; i++)
					printf("%02X",iv[i]);
				printf("\n");
				}
			if (printkey == 2)
				{
				ret=0;
				goto end;
				}
			}
		}

	/* Only encrypt/decrypt as we write the file */
	if (benc != NULL)
		wbio=BIO_push(benc,wbio);

	for (;;)
		{
		inl=BIO_read(rbio,(char *)buff,bsize);
		if (inl <= 0) break;
		if (BIO_write(wbio,(char *)buff,inl) != inl)
			{
			BIO_printf(bio_err,"error writing output file\n");
			goto end;
			}
		}
	if (!BIO_flush(wbio))
		{
		BIO_printf(bio_err,"bad decrypt\n");
		goto end;
		}

	ret=0;
	if (verbose)
		{
		BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
		BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
		}
end:
	ERR_print_errors(bio_err);
	if (strbuf != NULL) OPENSSL_free(strbuf);
	if (buff != NULL) OPENSSL_free(buff);
	if (in != NULL) BIO_free(in);
	if (out != NULL) BIO_free_all(out);
	if (benc != NULL) BIO_free(benc);
	if (b64 != NULL) BIO_free(b64);
	if(pass) OPENSSL_free(pass);
	EXIT(ret);
	}

int set_hex(char *in, unsigned char *out, int size)
	{
	int i,n;
	unsigned char j;

	n=strlen(in);
	if (n > (size*2))
		{
		BIO_printf(bio_err,"hex string is too long\n");
		return(0);
		}
	memset(out,0,size);
	for (i=0; i<n; i++)
		{
		j=(unsigned char)*in;
		*(in++)='\0';
		if (j == 0) break;
		if ((j >= '0') && (j <= '9'))
			j-='0';
		else if ((j >= 'A') && (j <= 'F'))
			j=j-'A'+10;
		else if ((j >= 'a') && (j <= 'f'))
			j=j-'a'+10;
		else
			{
			BIO_printf(bio_err,"non-hex digit\n");
			return(0);
			}
		if (i&1)
			out[i/2]|=j;
		else
			out[i/2]=(j<<4);
		}
	return(1);
	}
Commit	Line	Data
d02b48c6	1	/* apps/enc.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include <stdlib.h>
	61	#include <string.h>
	62	#include "apps.h"
ec577822 BM	63	#include <openssl/bio.h>
	64	#include <openssl/err.h>
	65	#include <openssl/evp.h>
	66	#include <openssl/objects.h>
	67	#include <openssl/x509.h>
fd699ac5	68	#include <openssl/rand.h>
cf1b7d96	69	#ifndef OPENSSL_NO_MD5
ec577822	70	#include <openssl/md5.h>
d02b48c6	71	#endif
ec577822	72	#include <openssl/pem.h>
5270e702	73	#include <openssl/engine.h>
646d5695	74	#include <ctype.h>
d02b48c6	75
d02b48c6	76	int set_hex(char in,unsigned char out,int size);
d02b48c6 RE	77	#undef SIZE
	78	#undef BSIZE
	79	#undef PROG
	80
	81	#define SIZE (512)
	82	#define BSIZE (8*1024)
	83	#define PROG enc_main
	84
646d5695 BL	85	void show_ciphers(const OBJ_NAME name,void bio_)
	86	{
	87	BIO *bio=bio_;
	88	static int n;
	89
a87e50a9	90	if(!islower((unsigned char)*name->name))
646d5695 BL	91	return;
	92
	93	BIO_printf(bio,"-%-25s",name->name);
	94	if(++n == 3)
	95	{
	96	BIO_printf(bio,"\n");
	97	n=0;
	98	}
	99	else
	100	BIO_printf(bio," ");
	101	}
	102
667ac4ec RE	103	int MAIN(int, char **);
667ac4ec RE	104
6b691a5c	105	int MAIN(int argc, char **argv)
d02b48c6	106	{
5270e702	107	ENGINE *e = NULL;
fea9afbf BL	108	static const char magic[]="Salted__";
fea9afbf BL	109	char mbuf[8]; /* should be 1 smaller than magic */
d02b48c6 RE	110	char *strbuf=NULL;
	111	unsigned char buff=NULL,bufsize=NULL;
	112	int bsize=BSIZE,verbose=0;
	113	int ret=1,inl;
f2e5ca84	114	int nopad = 0;
757e392d	115	unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
fd699ac5	116	unsigned char salt[PKCS5_SALT_LEN];
cd3c54e5	117	char str=NULL, passarg = NULL, *pass = NULL;
fd699ac5	118	char hkey=NULL,hiv=NULL,*hsalt = NULL;
d02b48c6	119	int enc=1,printkey=0,i,base64=0;
fea9afbf	120	int debug=0,olb64=0,nosalt=0;
e778802f	121	const EVP_CIPHER cipher=NULL,c;
d02b48c6 RE	122	char inf=NULL,outf=NULL;
	123	BIO in=NULL,out=NULL,b64=NULL,benc=NULL,rbio=NULL,wbio=NULL;
	124	#define PROG_NAME_SIZE 16
b1c4fe36	125	char pname[PROG_NAME_SIZE];
5270e702	126	char *engine = NULL;
d02b48c6 RE	127
	128	apps_startup();
	129
	130	if (bio_err == NULL)
	131	if ((bio_err=BIO_new(BIO_s_file())) != NULL)
58964a49	132	BIO_set_fp(bio_err,stderr,BIO_NOCLOSE\|BIO_FP_TEXT);
d02b48c6 RE	133
d02b48c6 RE	134	/* first check the program name */
b1c4fe36	135	program_name(argv[0],pname,PROG_NAME_SIZE);
d02b48c6 RE	136	if (strcmp(pname,"base64") == 0)
	137	base64=1;
	138
	139	cipher=EVP_get_cipherbyname(pname);
	140	if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
	141	{
	142	BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
	143	goto bad;
	144	}
	145
	146	argc--;
	147	argv++;
	148	while (argc >= 1)
	149	{
	150	if (strcmp(*argv,"-e") == 0)
	151	enc=1;
	152	else if (strcmp(*argv,"-in") == 0)
	153	{
	154	if (--argc < 1) goto bad;
	155	inf= *(++argv);
	156	}
	157	else if (strcmp(*argv,"-out") == 0)
	158	{
	159	if (--argc < 1) goto bad;
	160	outf= *(++argv);
	161	}
cd3c54e5 DSH	162	else if (strcmp(*argv,"-pass") == 0)
	163	{
	164	if (--argc < 1) goto bad;
	165	passarg= *(++argv);
	166	}
5270e702 RL	167	else if (strcmp(*argv,"-engine") == 0)
	168	{
	169	if (--argc < 1) goto bad;
	170	engine= *(++argv);
	171	}
d02b48c6 RE	172	else if (strcmp(*argv,"-d") == 0)
	173	enc=0;
	174	else if (strcmp(*argv,"-p") == 0)
	175	printkey=1;
	176	else if (strcmp(*argv,"-v") == 0)
	177	verbose=1;
f2e5ca84 DSH	178	else if (strcmp(*argv,"-nopad") == 0)
f2e5ca84 DSH	179	nopad=1;
fd699ac5 DSH	180	else if (strcmp(*argv,"-salt") == 0)
	181	nosalt=0;
	182	else if (strcmp(*argv,"-nosalt") == 0)
	183	nosalt=1;
	184	else if (strcmp(*argv,"-debug") == 0)
d02b48c6 RE	185	debug=1;
	186	else if (strcmp(*argv,"-P") == 0)
	187	printkey=2;
58964a49 RE	188	else if (strcmp(*argv,"-A") == 0)
58964a49 RE	189	olb64=1;
d02b48c6 RE	190	else if (strcmp(*argv,"-a") == 0)
	191	base64=1;
	192	else if (strcmp(*argv,"-base64") == 0)
	193	base64=1;
	194	else if (strcmp(*argv,"-bufsize") == 0)
	195	{
	196	if (--argc < 1) goto bad;
	197	bufsize=(unsigned char )(++argv);
	198	}
	199	else if (strcmp(*argv,"-k") == 0)
	200	{
	201	if (--argc < 1) goto bad;
	202	str= *(++argv);
	203	}
	204	else if (strcmp(*argv,"-kfile") == 0)
	205	{
	206	static char buf[128];
	207	FILE *infile;
	208	char *file;
	209
	210	if (--argc < 1) goto bad;
	211	file= *(++argv);
	212	infile=fopen(file,"r");
	213	if (infile == NULL)
	214	{
	215	BIO_printf(bio_err,"unable to read key from '%s'\n",
	216	file);
	217	goto bad;
	218	}
	219	buf[0]='\0';
	220	fgets(buf,128,infile);
	221	fclose(infile);
	222	i=strlen(buf);
	223	if ((i > 0) &&
	224	((buf[i-1] == '\n') \|\| (buf[i-1] == '\r')))
	225	buf[--i]='\0';
	226	if ((i > 0) &&
	227	((buf[i-1] == '\n') \|\| (buf[i-1] == '\r')))
	228	buf[--i]='\0';
	229	if (i < 1)
	230	{
	231	BIO_printf(bio_err,"zero length password\n");
	232	goto bad;
	233	}
	234	str=buf;
	235	}
	236	else if (strcmp(*argv,"-K") == 0)
	237	{
	238	if (--argc < 1) goto bad;
	239	hkey= *(++argv);
	240	}
fd699ac5 DSH	241	else if (strcmp(*argv,"-S") == 0)
	242	{
	243	if (--argc < 1) goto bad;
	244	hsalt= *(++argv);
	245	}
d02b48c6 RE	246	else if (strcmp(*argv,"-iv") == 0)
	247	{
	248	if (--argc < 1) goto bad;
	249	hiv= *(++argv);
	250	}
	251	else if ((argv[0][0] == '-') &&
	252	((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
	253	{
	254	cipher=c;
	255	}
	256	else if (strcmp(*argv,"-none") == 0)
	257	cipher=NULL;
	258	else
	259	{
	260	BIO_printf(bio_err,"unknown option '%s'\n",*argv);
	261	bad:
	262	BIO_printf(bio_err,"options are\n");
	263	BIO_printf(bio_err,"%-14s input file\n","-in <file>");
cd3c54e5 DSH	264	BIO_printf(bio_err,"%-14s output file\n","-out <file>");
cd3c54e5 DSH	265	BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
d02b48c6 RE	266	BIO_printf(bio_err,"%-14s encrypt\n","-e");
	267	BIO_printf(bio_err,"%-14s decrypt\n","-d");
	268	BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
	269	BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
	270	BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
	271	BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
	272	BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
	273	BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
5270e702	274	BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
d02b48c6 RE	275
d02b48c6 RE	276	BIO_printf(bio_err,"Cipher Types\n");
646d5695 BL	277	OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
	278	show_ciphers,
	279	bio_err);
	280	BIO_printf(bio_err,"\n");
d02b48c6	281
d02b48c6 RE	282	goto end;
	283	}
	284	argc--;
	285	argv++;
	286	}
	287
5270e702 RL	288	if (engine != NULL)
	289	{
	290	if((e = ENGINE_by_id(engine)) == NULL)
	291	{
	292	BIO_printf(bio_err,"invalid engine \"%s\"\n",
	293	engine);
	294	goto end;
	295	}
	296	if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
	297	{
	298	BIO_printf(bio_err,"can't use that engine\n");
	299	goto end;
	300	}
	301	BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
	302	/* Free our "structural" reference. */
	303	ENGINE_free(e);
	304	}
	305
d02b48c6 RE	306	if (bufsize != NULL)
	307	{
	308	unsigned long n;
	309
	310	for (n=0; *bufsize; bufsize++)
	311	{
	312	i= *bufsize;
	313	if ((i <= '9') && (i >= '0'))
	314	n=n*10+i-'0';
	315	else if (i == 'k')
	316	{
	317	n*=1024;
	318	bufsize++;
	319	break;
	320	}
	321	}
	322	if (*bufsize != '\0')
	323	{
	324	BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
	325	goto end;
	326	}
	327
	328	/* It must be large enough for a base64 encoded line */
	329	if (n < 80) n=80;
	330
	331	bsize=(int)n;
	332	if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
	333	}
	334
26a3a48d RL	335	strbuf=OPENSSL_malloc(SIZE);
26a3a48d RL	336	buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
d02b48c6 RE	337	if ((buff == NULL) \|\| (strbuf == NULL))
d02b48c6 RE	338	{
26a3a48d	339	BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
d02b48c6 RE	340	goto end;
	341	}
	342
	343	in=BIO_new(BIO_s_file());
	344	out=BIO_new(BIO_s_file());
	345	if ((in == NULL) \|\| (out == NULL))
	346	{
	347	ERR_print_errors(bio_err);
	348	goto end;
	349	}
	350	if (debug)
	351	{
	352	BIO_set_callback(in,BIO_debug_callback);
	353	BIO_set_callback(out,BIO_debug_callback);
	354	BIO_set_callback_arg(in,bio_err);
	355	BIO_set_callback_arg(out,bio_err);
	356	}
	357
	358	if (inf == NULL)
	359	BIO_set_fp(in,stdin,BIO_NOCLOSE);
	360	else
	361	{
	362	if (BIO_read_filename(in,inf) <= 0)
	363	{
	364	perror(inf);
	365	goto end;
	366	}
	367	}
	368
cd3c54e5 DSH	369	if(!str && passarg) {
	370	if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
	371	BIO_printf(bio_err, "Error getting password\n");
	372	goto end;
	373	}
	374	str = pass;
	375	}
	376
d02b48c6 RE	377	if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
	378	{
	379	for (;;)
	380	{
	381	char buf[200];
	382
	383	sprintf(buf,"enter %s %s password:",
	384	OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
	385	(enc)?"encryption":"decryption");
	386	strbuf[0]='\0';
	387	i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
	388	if (i == 0)
	389	{
	390	if (strbuf[0] == '\0')
	391	{
	392	ret=1;
	393	goto end;
	394	}
	395	str=strbuf;
	396	break;
	397	}
	398	if (i < 0)
	399	{
	400	BIO_printf(bio_err,"bad password read\n");
	401	goto end;
	402	}
	403	}
	404	}
	405
fd699ac5 DSH	406
fd699ac5 DSH	407	if (outf == NULL)
645749ef	408	{
fd699ac5	409	BIO_set_fp(out,stdout,BIO_NOCLOSE);
645749ef RL	410	#ifdef VMS
	411	{
	412	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
	413	out = BIO_push(tmpbio, out);
	414	}
	415	#endif
	416	}
fd699ac5 DSH	417	else
	418	{
	419	if (BIO_write_filename(out,outf) <= 0)
	420	{
	421	perror(outf);
	422	goto end;
	423	}
	424	}
	425
	426	rbio=in;
	427	wbio=out;
	428
	429	if (base64)
	430	{
	431	if ((b64=BIO_new(BIO_f_base64())) == NULL)
	432	goto end;
	433	if (debug)
	434	{
	435	BIO_set_callback(b64,BIO_debug_callback);
	436	BIO_set_callback_arg(b64,bio_err);
	437	}
	438	if (olb64)
	439	BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
	440	if (enc)
	441	wbio=BIO_push(b64,wbio);
	442	else
	443	rbio=BIO_push(b64,rbio);
	444	}
	445
d02b48c6 RE	446	if (cipher != NULL)
d02b48c6 RE	447	{
259810e0 BL	448	/* Note that str is NULL if a key was passed on the command
	449	* line, so we get no salt in that case. Is this a bug?
	450	*/
d02b48c6 RE	451	if (str != NULL)
d02b48c6 RE	452	{
fd699ac5 DSH	453	/* Salt handling: if encrypting generate a salt and
	454	* write to output BIO. If decrypting read salt from
	455	* input BIO.
	456	*/
	457	unsigned char *sptr;
	458	if(nosalt) sptr = NULL;
	459	else {
	460	if(enc) {
	461	if(hsalt) {
	462	if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
	463	BIO_printf(bio_err,
	464	"invalid hex salt value\n");
	465	goto end;
	466	}
05ccd698	467	} else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
e7f97e2d	468	goto end;
fd699ac5	469	/* If -P option then don't bother writing */
fea9afbf BL	470	if((printkey != 2)
	471	&& (BIO_write(wbio,magic,
	472	sizeof magic-1) != sizeof magic-1
	473	\|\| BIO_write(wbio,
	474	(char *)salt,
	475	PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
fd699ac5 DSH	476	BIO_printf(bio_err,"error writing output file\n");
	477	goto end;
	478	}
fea9afbf BL	479	} else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
	480	\|\| BIO_read(rbio,
	481	(unsigned char *)salt,
fd699ac5 DSH	482	PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
	483	BIO_printf(bio_err,"error reading input file\n");
	484	goto end;
fea9afbf BL	485	} else if(memcmp(mbuf,magic,sizeof magic-1)) {
	486	BIO_printf(bio_err,"bad magic number\n");
	487	goto end;
fd699ac5	488	}
fea9afbf	489
fd699ac5 DSH	490	sptr = salt;
	491	}
	492
	493	EVP_BytesToKey(cipher,EVP_md5(),sptr,
d02b48c6 RE	494	(unsigned char *)str,
	495	strlen(str),1,key,iv);
	496	/* zero the complete buffer or the string
	497	* passed from the command line
	498	* bug picked up by
	499	* Larry J. Hughes Jr. <hughes@indiana.edu> */
	500	if (str == strbuf)
	501	memset(str,0,SIZE);
	502	else
	503	memset(str,0,strlen(str));
	504	}
757e392d	505	if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
d02b48c6 RE	506	{
	507	BIO_printf(bio_err,"invalid hex iv value\n");
	508	goto end;
	509	}
757e392d	510	if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
d02b48c6 RE	511	{
	512	BIO_printf(bio_err,"invalid hex key value\n");
	513	goto end;
	514	}
	515
	516	if ((benc=BIO_new(BIO_f_cipher())) == NULL)
	517	goto end;
	518	BIO_set_cipher(benc,cipher,key,iv,enc);
f2e5ca84 DSH	519	if (nopad)
	520	{
	521	EVP_CIPHER_CTX *ctx;
	522	BIO_get_cipher_ctx(benc, &ctx);
	523	EVP_CIPHER_CTX_set_padding(ctx, 0);
	524	}
d02b48c6 RE	525	if (debug)
	526	{
	527	BIO_set_callback(benc,BIO_debug_callback);
	528	BIO_set_callback_arg(benc,bio_err);
	529	}
	530
	531	if (printkey)
	532	{
fd699ac5 DSH	533	if (!nosalt)
	534	{
	535	printf("salt=");
	536	for (i=0; i<PKCS5_SALT_LEN; i++)
	537	printf("%02X",salt[i]);
	538	printf("\n");
	539	}
d02b48c6 RE	540	if (cipher->key_len > 0)
	541	{
	542	printf("key=");
	543	for (i=0; i<cipher->key_len; i++)
	544	printf("%02X",key[i]);
	545	printf("\n");
	546	}
	547	if (cipher->iv_len > 0)
	548	{
	549	printf("iv =");
	550	for (i=0; i<cipher->iv_len; i++)
	551	printf("%02X",iv[i]);
	552	printf("\n");
	553	}
	554	if (printkey == 2)
	555	{
	556	ret=0;
	557	goto end;
	558	}
	559	}
	560	}
	561
d02b48c6 RE	562	/* Only encrypt/decrypt as we write the file */
	563	if (benc != NULL)
	564	wbio=BIO_push(benc,wbio);
	565
	566	for (;;)
	567	{
	568	inl=BIO_read(rbio,(char *)buff,bsize);
	569	if (inl <= 0) break;
	570	if (BIO_write(wbio,(char *)buff,inl) != inl)
	571	{
	572	BIO_printf(bio_err,"error writing output file\n");
	573	goto end;
	574	}
	575	}
	576	if (!BIO_flush(wbio))
	577	{
	578	BIO_printf(bio_err,"bad decrypt\n");
	579	goto end;
	580	}
	581
	582	ret=0;
	583	if (verbose)
	584	{
	585	BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in));
	586	BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
	587	}
	588	end:
033db22d	589	ERR_print_errors(bio_err);
26a3a48d RL	590	if (strbuf != NULL) OPENSSL_free(strbuf);
26a3a48d RL	591	if (buff != NULL) OPENSSL_free(buff);
d02b48c6	592	if (in != NULL) BIO_free(in);
645749ef	593	if (out != NULL) BIO_free_all(out);
d02b48c6 RE	594	if (benc != NULL) BIO_free(benc);
d02b48c6 RE	595	if (b64 != NULL) BIO_free(b64);
26a3a48d	596	if(pass) OPENSSL_free(pass);
d02b48c6 RE	597	EXIT(ret);
	598	}
	599
6b691a5c	600	int set_hex(char in, unsigned char out, int size)
d02b48c6 RE	601	{
	602	int i,n;
	603	unsigned char j;
	604
	605	n=strlen(in);
	606	if (n > (size*2))
	607	{
	608	BIO_printf(bio_err,"hex string is too long\n");
	609	return(0);
	610	}
	611	memset(out,0,size);
	612	for (i=0; i<n; i++)
	613	{
	614	j=(unsigned char)*in;
	615	*(in++)='\0';
	616	if (j == 0) break;
	617	if ((j >= '0') && (j <= '9'))
	618	j-='0';
	619	else if ((j >= 'A') && (j <= 'F'))
	620	j=j-'A'+10;
	621	else if ((j >= 'a') && (j <= 'f'))
	622	j=j-'a'+10;
	623	else
	624	{
	625	BIO_printf(bio_err,"non-hex digit\n");
	626	return(0);
	627	}
	628	if (i&1)
	629	out[i/2]\|=j;
	630	else
	631	out[i/2]=(j<<4);
	632	}
	633	return(1);
	634	}