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openssl/apps/dgst.c
Andy Polyakov 6ef18c21c9 Bug in apps/dgst.c.
2007-04-30 15:20:10 +00:00

599 lines
15 KiB
C
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/* apps/dgst.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 <string.h>
#include <stdlib.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/pem.h>
#include <openssl/hmac.h>
#undef BUFSIZE
#define BUFSIZE 1024*8
#undef PROG
#define PROG dgst_main
int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
const char *file,BIO *bmd);
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
unsigned char *buf=NULL;
int i,err=0;
const EVP_MD *md=NULL,*m;
BIO *in=NULL,*inp;
BIO *bmd=NULL;
BIO *out = NULL;
const char *name;
#define PROG_NAME_SIZE 39
char pname[PROG_NAME_SIZE+1];
int separator=0;
int debug=0;
int keyform=FORMAT_PEM;
const char *outfile = NULL, *keyfile = NULL;
const char *sigfile = NULL, *randfile = NULL;
int out_bin = -1, want_pub = 0, do_verify = 0;
EVP_PKEY *sigkey = NULL;
unsigned char *sigbuf = NULL;
int siglen = 0;
char *passargin = NULL, *passin = NULL;
#ifndef OPENSSL_NO_ENGINE
char *engine=NULL;
#endif
char *hmac_key=NULL;
char *mac_name=NULL;
STACK *sigopts = NULL, *macopts = NULL;
apps_startup();
if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
{
BIO_printf(bio_err,"out of memory\n");
goto end;
}
if (bio_err == NULL)
if ((bio_err=BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
if (!load_config(bio_err, NULL))
goto end;
/* first check the program name */
program_name(argv[0],pname,sizeof pname);
md=EVP_get_digestbyname(pname);
argc--;
argv++;
while (argc > 0)
{
if ((*argv)[0] != '-') break;
if (strcmp(*argv,"-c") == 0)
separator=1;
else if (strcmp(*argv,"-rand") == 0)
{
if (--argc < 1) break;
randfile=*(++argv);
}
else if (strcmp(*argv,"-out") == 0)
{
if (--argc < 1) break;
outfile=*(++argv);
}
else if (strcmp(*argv,"-sign") == 0)
{
if (--argc < 1) break;
keyfile=*(++argv);
}
else if (!strcmp(*argv,"-passin"))
{
if (--argc < 1)
break;
passargin=*++argv;
}
else if (strcmp(*argv,"-verify") == 0)
{
if (--argc < 1) break;
keyfile=*(++argv);
want_pub = 1;
do_verify = 1;
}
else if (strcmp(*argv,"-prverify") == 0)
{
if (--argc < 1) break;
keyfile=*(++argv);
do_verify = 1;
}
else if (strcmp(*argv,"-signature") == 0)
{
if (--argc < 1) break;
sigfile=*(++argv);
}
else if (strcmp(*argv,"-keyform") == 0)
{
if (--argc < 1) break;
keyform=str2fmt(*(++argv));
}
#ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv,"-engine") == 0)
{
if (--argc < 1) break;
engine= *(++argv);
e = setup_engine(bio_err, engine, 0);
}
#endif
else if (strcmp(*argv,"-hex") == 0)
out_bin = 0;
else if (strcmp(*argv,"-binary") == 0)
out_bin = 1;
else if (strcmp(*argv,"-d") == 0)
debug=1;
else if (!strcmp(*argv,"-hmac"))
{
if (--argc < 1)
break;
hmac_key=*++argv;
}
else if (!strcmp(*argv,"-mac"))
{
if (--argc < 1)
break;
mac_name=*++argv;
}
else if (strcmp(*argv,"-sigopt") == 0)
{
if (--argc < 1)
break;
if (!sigopts)
sigopts = sk_new_null();
if (!sigopts || !sk_push(sigopts, *(++argv)))
break;
}
else if (strcmp(*argv,"-macopt") == 0)
{
if (--argc < 1)
break;
if (!macopts)
macopts = sk_new_null();
if (!macopts || !sk_push(macopts, *(++argv)))
break;
}
else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
md=m;
else
break;
argc--;
argv++;
}
if (md == NULL)
md=EVP_md5();
if(do_verify && !sigfile) {
BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
err = 1;
goto end;
}
if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
{
BIO_printf(bio_err,"unknown option '%s'\n",*argv);
BIO_printf(bio_err,"options are\n");
BIO_printf(bio_err,"-c to output the digest with separating colons\n");
BIO_printf(bio_err,"-d to output debug info\n");
BIO_printf(bio_err,"-hex output as hex dump\n");
BIO_printf(bio_err,"-binary output in binary form\n");
BIO_printf(bio_err,"-sign file sign digest using private key in file\n");
BIO_printf(bio_err,"-verify file verify a signature using public key in file\n");
BIO_printf(bio_err,"-prverify file verify a signature using private key in file\n");
BIO_printf(bio_err,"-keyform arg key file format (PEM or ENGINE)\n");
BIO_printf(bio_err,"-signature file signature to verify\n");
BIO_printf(bio_err,"-sigopt nm:v signature parameter\n");
BIO_printf(bio_err,"-binary output in binary form\n");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err,"-engine e use engine e, possibly a hardware device.\n");
#endif
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm (default)\n",
LN_md5,LN_md5);
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_md4,LN_md4);
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_md2,LN_md2);
#ifndef OPENSSL_NO_SHA
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_sha1,LN_sha1);
#ifndef OPENSSL_NO_SHA256
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_sha224,LN_sha224);
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_sha256,LN_sha256);
#endif
#ifndef OPENSSL_NO_SHA512
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_sha384,LN_sha384);
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_sha512,LN_sha512);
#endif
#endif
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_mdc2,LN_mdc2);
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
LN_ripemd160,LN_ripemd160);
#ifndef OPENSSL_NO_WHIRLPOOL
BIO_printf(bio_err,"-%-14s to use the %s message digest algorithm\n",
SN_whirlpool,SN_whirlpool);
#endif
err=1;
goto end;
}
in=BIO_new(BIO_s_file());
bmd=BIO_new(BIO_f_md());
if (debug)
{
BIO_set_callback(in,BIO_debug_callback);
/* needed for windows 3.1 */
BIO_set_callback_arg(in,(char *)bio_err);
}
if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
{
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if ((in == NULL) || (bmd == NULL))
{
ERR_print_errors(bio_err);
goto end;
}
if(out_bin == -1) {
if(keyfile) out_bin = 1;
else out_bin = 0;
}
if(randfile)
app_RAND_load_file(randfile, bio_err, 0);
if(outfile) {
if(out_bin)
out = BIO_new_file(outfile, "wb");
else out = BIO_new_file(outfile, "w");
} else {
out = BIO_new_fp(stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
#endif
}
if(!out) {
BIO_printf(bio_err, "Error opening output file %s\n",
outfile ? outfile : "(stdout)");
ERR_print_errors(bio_err);
goto end;
}
if ((!!mac_name + !!keyfile + !!hmac_key) > 1)
{
BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
goto end;
}
if(keyfile)
{
if (want_pub)
sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
e, "key file");
else
sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
e, "key file");
if (!sigkey)
{
/* load_[pub]key() has already printed an appropriate
message */
goto end;
}
}
if (mac_name)
{
EVP_PKEY_CTX *mac_ctx = NULL;
int r = 0;
if (!init_gen_str(bio_err, &mac_ctx, mac_name,e, 0))
goto mac_end;
if (macopts)
{
char *macopt;
for (i = 0; i < sk_num(macopts); i++)
{
macopt = sk_value(macopts, i);
if (pkey_ctrl_string(mac_ctx, macopt) <= 0)
{
BIO_printf(bio_err,
"MAC parameter error \"%s\"\n",
macopt);
ERR_print_errors(bio_err);
goto mac_end;
}
}
}
if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0)
{
BIO_puts(bio_err, "Error generating key\n");
ERR_print_errors(bio_err);
goto mac_end;
}
r = 1;
mac_end:
if (mac_ctx)
EVP_PKEY_CTX_free(mac_ctx);
if (r == 0)
goto end;
}
if (hmac_key)
{
sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e,
(unsigned char *)hmac_key, -1);
if (!sigkey)
goto end;
}
if (sigkey)
{
EVP_MD_CTX *mctx = NULL;
EVP_PKEY_CTX *pctx = NULL;
if (!BIO_get_md_ctx(bmd, &mctx))
{
BIO_printf(bio_err, "Error getting context\n");
ERR_print_errors(bio_err);
goto end;
}
if (!EVP_DigestSignInit(mctx, &pctx, md, e, sigkey))
{
BIO_printf(bio_err, "Error setting context\n");
ERR_print_errors(bio_err);
goto end;
}
if (sigopts)
{
char *sigopt;
for (i = 0; i < sk_num(sigopts); i++)
{
sigopt = sk_value(sigopts, i);
if (pkey_ctrl_string(pctx, sigopt) <= 0)
{
BIO_printf(bio_err,
"parameter error \"%s\"\n",
sigopt);
ERR_print_errors(bio_err);
goto end;
}
}
}
}
/* we use md as a filter, reading from 'in' */
else if (!BIO_set_md(bmd,md))
{
BIO_printf(bio_err, "Error setting digest %s\n", pname);
ERR_print_errors(bio_err);
goto end;
}
if(sigfile && sigkey) {
BIO *sigbio;
sigbio = BIO_new_file(sigfile, "rb");
siglen = EVP_PKEY_size(sigkey);
sigbuf = OPENSSL_malloc(siglen);
if(!sigbio) {
BIO_printf(bio_err, "Error opening signature file %s\n",
sigfile);
ERR_print_errors(bio_err);
goto end;
}
siglen = BIO_read(sigbio, sigbuf, siglen);
BIO_free(sigbio);
if(siglen <= 0) {
BIO_printf(bio_err, "Error reading signature file %s\n",
sigfile);
ERR_print_errors(bio_err);
goto end;
}
}
inp=BIO_push(bmd,in);
if (argc == 0)
{
BIO_set_fp(in,stdin,BIO_NOCLOSE);
err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
siglen,"","(stdin)",bmd);
}
else
{
name=OBJ_nid2sn(md->type);
for (i=0; i<argc; i++)
{
char *tmp,*tofree=NULL;
int r;
if (BIO_read_filename(in,argv[i]) <= 0)
{
perror(argv[i]);
err++;
continue;
}
if(!out_bin)
{
size_t len = strlen(name)+strlen(argv[i])+(hmac_key ? 5 : 0)+5;
tmp=tofree=OPENSSL_malloc(len);
BIO_snprintf(tmp,len,"%s%s(%s)= ",
hmac_key ? "HMAC-" : "",name,argv[i]);
}
else
tmp="";
r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
siglen,tmp,argv[i],bmd);
if(r)
err=r;
if(tofree)
OPENSSL_free(tofree);
(void)BIO_reset(bmd);
}
}
end:
if (buf != NULL)
{
OPENSSL_cleanse(buf,BUFSIZE);
OPENSSL_free(buf);
}
if (in != NULL) BIO_free(in);
if (passin)
OPENSSL_free(passin);
BIO_free_all(out);
EVP_PKEY_free(sigkey);
if (sigopts)
sk_free(sigopts);
if (macopts)
sk_free(macopts);
if(sigbuf) OPENSSL_free(sigbuf);
if (bmd != NULL) BIO_free(bmd);
apps_shutdown();
OPENSSL_EXIT(err);
}
int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
EVP_PKEY *key, unsigned char *sigin, int siglen, const char *title,
const char *file,BIO *bmd)
{
size_t len;
int i;
for (;;)
{
i=BIO_read(bp,(char *)buf,BUFSIZE);
if(i < 0)
{
BIO_printf(bio_err, "Read Error in %s\n",file);
ERR_print_errors(bio_err);
return 1;
}
if (i == 0) break;
}
if(sigin)
{
EVP_MD_CTX *ctx;
BIO_get_md_ctx(bp, &ctx);
i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
if(i > 0)
BIO_printf(out, "Verified OK\n");
else if(i == 0)
{
BIO_printf(out, "Verification Failure\n");
return 1;
}
else
{
BIO_printf(bio_err, "Error Verifying Data\n");
ERR_print_errors(bio_err);
return 1;
}
return 0;
}
if(key)
{
EVP_MD_CTX *ctx;
BIO_get_md_ctx(bp, &ctx);
if(!EVP_DigestSignFinal(ctx, buf, &len))
{
BIO_printf(bio_err, "Error Signing Data\n");
ERR_print_errors(bio_err);
return 1;
}
}
else
len=BIO_gets(bp,(char *)buf,BUFSIZE);
if(binout) BIO_write(out, buf, len);
else
{
BIO_write(out,title,strlen(title));
for (i=0; i<(int)len; i++)
{
if (sep && (i != 0))
BIO_printf(out, ":");
BIO_printf(out, "%02x",buf[i]);
}
BIO_printf(out, "\n");
}
return 0;
}
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