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openssl/apps/pkeyutl.c
Dr. Stephen Henson 84fbc56fd0 PR: 2366 
Submitted by: Damien Miller <djm@mindrot.org>
Reviewed by: steve

Stop pkeyutl crashing if some arguments are missing. Also make str2fmt
tolerate NULL parameter.
2010-11-11 14:42:34 +00:00

570 lines
13 KiB
C
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2006.
*/
/* ====================================================================
* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include "apps.h"
#include <string.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/evp.h>
#define KEY_PRIVKEY 1
#define KEY_PUBKEY 2
#define KEY_CERT 3
static void usage(void);
#undef PROG
#define PROG pkeyutl_main
static EVP_PKEY_CTX *init_ctx(int *pkeysize,
char *keyfile, int keyform, int key_type,
char *passargin, int pkey_op, ENGINE *e);
static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
const char *file);
static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
unsigned char *out, size_t *poutlen,
unsigned char *in, size_t inlen);
int MAIN(int argc, char **);
int MAIN(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
char *infile = NULL, *outfile = NULL, *sigfile = NULL;
ENGINE *e = NULL;
int pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
int keyform = FORMAT_PEM, peerform = FORMAT_PEM;
char badarg = 0, rev = 0;
char hexdump = 0, asn1parse = 0;
EVP_PKEY_CTX *ctx = NULL;
char *passargin = NULL;
int keysize = -1;
unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
size_t buf_outlen;
int buf_inlen = 0, siglen = -1;
int ret = 1, rv = -1;
argc--;
argv++;
if(!bio_err) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
if (!load_config(bio_err, NULL))
goto end;
ERR_load_crypto_strings();
OpenSSL_add_all_algorithms();
while(argc >= 1)
{
if (!strcmp(*argv,"-in"))
{
if (--argc < 1) badarg = 1;
else infile= *(++argv);
}
else if (!strcmp(*argv,"-out"))
{
if (--argc < 1) badarg = 1;
else outfile= *(++argv);
}
else if (!strcmp(*argv,"-sigfile"))
{
if (--argc < 1) badarg = 1;
else sigfile= *(++argv);
}
else if(!strcmp(*argv, "-inkey"))
{
if (--argc < 1)
badarg = 1;
else
{
ctx = init_ctx(&keysize,
*(++argv), keyform, key_type,
passargin, pkey_op, e);
if (!ctx)
{
BIO_puts(bio_err,
"Error initializing context\n");
ERR_print_errors(bio_err);
badarg = 1;
}
}
}
else if (!strcmp(*argv,"-peerkey"))
{
if (--argc < 1)
badarg = 1;
else if (!setup_peer(bio_err, ctx, peerform, *(++argv)))
badarg = 1;
}
else if (!strcmp(*argv,"-passin"))
{
if (--argc < 1) badarg = 1;
else passargin= *(++argv);
}
else if (strcmp(*argv,"-peerform") == 0)
{
if (--argc < 1) badarg = 1;
else peerform=str2fmt(*(++argv));
}
else if (strcmp(*argv,"-keyform") == 0)
{
if (--argc < 1) badarg = 1;
else keyform=str2fmt(*(++argv));
}
#ifndef OPENSSL_NO_ENGINE
else if(!strcmp(*argv, "-engine"))
{
if (--argc < 1)
badarg = 1;
else
e = setup_engine(bio_err, *(++argv), 0);
}
#endif
else if(!strcmp(*argv, "-pubin"))
key_type = KEY_PUBKEY;
else if(!strcmp(*argv, "-certin"))
key_type = KEY_CERT;
else if(!strcmp(*argv, "-asn1parse"))
asn1parse = 1;
else if(!strcmp(*argv, "-hexdump"))
hexdump = 1;
else if(!strcmp(*argv, "-sign"))
pkey_op = EVP_PKEY_OP_SIGN;
else if(!strcmp(*argv, "-verify"))
pkey_op = EVP_PKEY_OP_VERIFY;
else if(!strcmp(*argv, "-verifyrecover"))
pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
else if(!strcmp(*argv, "-rev"))
rev = 1;
else if(!strcmp(*argv, "-encrypt"))
pkey_op = EVP_PKEY_OP_ENCRYPT;
else if(!strcmp(*argv, "-decrypt"))
pkey_op = EVP_PKEY_OP_DECRYPT;
else if(!strcmp(*argv, "-derive"))
pkey_op = EVP_PKEY_OP_DERIVE;
else if (strcmp(*argv,"-pkeyopt") == 0)
{
if (--argc < 1)
badarg = 1;
else if (!ctx)
{
BIO_puts(bio_err,
"-pkeyopt command before -inkey\n");
badarg = 1;
}
else if (pkey_ctrl_string(ctx, *(++argv)) <= 0)
{
BIO_puts(bio_err, "parameter setting error\n");
ERR_print_errors(bio_err);
goto end;
}
}
else badarg = 1;
if(badarg)
{
usage();
goto end;
}
argc--;
argv++;
}
if (!ctx)
{
usage();
goto end;
}
if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY))
{
BIO_puts(bio_err, "Signature file specified for non verify\n");
goto end;
}
if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY))
{
BIO_puts(bio_err, "No signature file specified for verify\n");
goto end;
}
/* FIXME: seed PRNG only if needed */
app_RAND_load_file(NULL, bio_err, 0);
if (pkey_op != EVP_PKEY_OP_DERIVE)
{
if(infile)
{
if(!(in = BIO_new_file(infile, "rb")))
{
BIO_puts(bio_err,
"Error Opening Input File\n");
ERR_print_errors(bio_err);
goto end;
}
}
else
in = BIO_new_fp(stdin, BIO_NOCLOSE);
}
if(outfile)
{
if(!(out = BIO_new_file(outfile, "wb")))
{
BIO_printf(bio_err, "Error Creating Output File\n");
ERR_print_errors(bio_err);
goto end;
}
}
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 (sigfile)
{
BIO *sigbio = BIO_new_file(sigfile, "rb");
if (!sigbio)
{
BIO_printf(bio_err, "Can't open signature file %s\n",
sigfile);
goto end;
}
siglen = bio_to_mem(&sig, keysize * 10, sigbio);
BIO_free(sigbio);
if (siglen <= 0)
{
BIO_printf(bio_err, "Error reading signature data\n");
goto end;
}
}
if (in)
{
/* Read the input data */
buf_inlen = bio_to_mem(&buf_in, keysize * 10, in);
if(buf_inlen <= 0)
{
BIO_printf(bio_err, "Error reading input Data\n");
exit(1);
}
if(rev)
{
size_t i;
unsigned char ctmp;
size_t l = (size_t)buf_inlen;
for(i = 0; i < l/2; i++)
{
ctmp = buf_in[i];
buf_in[i] = buf_in[l - 1 - i];
buf_in[l - 1 - i] = ctmp;
}
}
}
if(pkey_op == EVP_PKEY_OP_VERIFY)
{
rv = EVP_PKEY_verify(ctx, sig, (size_t)siglen,
buf_in, (size_t)buf_inlen);
if (rv == 0)
BIO_puts(out, "Signature Verification Failure\n");
else if (rv == 1)
BIO_puts(out, "Signature Verified Successfully\n");
if (rv >= 0)
goto end;
}
else
{
rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
buf_in, (size_t)buf_inlen);
if (rv > 0)
{
buf_out = OPENSSL_malloc(buf_outlen);
if (!buf_out)
rv = -1;
else
rv = do_keyop(ctx, pkey_op,
buf_out, (size_t *)&buf_outlen,
buf_in, (size_t)buf_inlen);
}
}
if(rv <= 0)
{
BIO_printf(bio_err, "Public Key operation error\n");
ERR_print_errors(bio_err);
goto end;
}
ret = 0;
if(asn1parse)
{
if(!ASN1_parse_dump(out, buf_out, buf_outlen, 1, -1))
ERR_print_errors(bio_err);
}
else if(hexdump)
BIO_dump(out, (char *)buf_out, buf_outlen);
else
BIO_write(out, buf_out, buf_outlen);
end:
if (ctx)
EVP_PKEY_CTX_free(ctx);
BIO_free(in);
BIO_free_all(out);
if (buf_in)
OPENSSL_free(buf_in);
if (buf_out)
OPENSSL_free(buf_out);
if (sig)
OPENSSL_free(sig);
return ret;
}
static void usage()
{
BIO_printf(bio_err, "Usage: pkeyutl [options]\n");
BIO_printf(bio_err, "-in file input file\n");
BIO_printf(bio_err, "-out file output file\n");
BIO_printf(bio_err, "-sigfile file signature file (verify operation only)\n");
BIO_printf(bio_err, "-inkey file input key\n");
BIO_printf(bio_err, "-keyform arg private key format - default PEM\n");
BIO_printf(bio_err, "-pubin input is a public key\n");
BIO_printf(bio_err, "-certin input is a certificate carrying a public key\n");
BIO_printf(bio_err, "-pkeyopt X:Y public key options\n");
BIO_printf(bio_err, "-sign sign with private key\n");
BIO_printf(bio_err, "-verify verify with public key\n");
BIO_printf(bio_err, "-verifyrecover verify with public key, recover original data\n");
BIO_printf(bio_err, "-encrypt encrypt with public key\n");
BIO_printf(bio_err, "-decrypt decrypt with private key\n");
BIO_printf(bio_err, "-derive derive shared secret\n");
BIO_printf(bio_err, "-hexdump hex dump output\n");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
#endif
BIO_printf(bio_err, "-passin arg pass phrase source\n");
}
static EVP_PKEY_CTX *init_ctx(int *pkeysize,
char *keyfile, int keyform, int key_type,
char *passargin, int pkey_op, ENGINE *e)
{
EVP_PKEY *pkey = NULL;
EVP_PKEY_CTX *ctx = NULL;
char *passin = NULL;
int rv = -1;
X509 *x;
if(((pkey_op == EVP_PKEY_OP_SIGN) || (pkey_op == EVP_PKEY_OP_DECRYPT)
|| (pkey_op == EVP_PKEY_OP_DERIVE))
&& (key_type != KEY_PRIVKEY))
{
BIO_printf(bio_err, "A private key is needed for this operation\n");
goto end;
}
if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
{
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
switch(key_type)
{
case KEY_PRIVKEY:
pkey = load_key(bio_err, keyfile, keyform, 0,
passin, e, "Private Key");
break;
case KEY_PUBKEY:
pkey = load_pubkey(bio_err, keyfile, keyform, 0,
NULL, e, "Public Key");
break;
case KEY_CERT:
x = load_cert(bio_err, keyfile, keyform,
NULL, e, "Certificate");
if(x)
{
pkey = X509_get_pubkey(x);
X509_free(x);
}
break;
}
*pkeysize = EVP_PKEY_size(pkey);
if (!pkey)
goto end;
ctx = EVP_PKEY_CTX_new(pkey, e);
EVP_PKEY_free(pkey);
if (!ctx)
goto end;
switch(pkey_op)
{
case EVP_PKEY_OP_SIGN:
rv = EVP_PKEY_sign_init(ctx);
break;
case EVP_PKEY_OP_VERIFY:
rv = EVP_PKEY_verify_init(ctx);
break;
case EVP_PKEY_OP_VERIFYRECOVER:
rv = EVP_PKEY_verify_recover_init(ctx);
break;
case EVP_PKEY_OP_ENCRYPT:
rv = EVP_PKEY_encrypt_init(ctx);
break;
case EVP_PKEY_OP_DECRYPT:
rv = EVP_PKEY_decrypt_init(ctx);
break;
case EVP_PKEY_OP_DERIVE:
rv = EVP_PKEY_derive_init(ctx);
break;
}
if (rv <= 0)
{
EVP_PKEY_CTX_free(ctx);
ctx = NULL;
}
end:
if (passin)
OPENSSL_free(passin);
return ctx;
}
static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
const char *file)
{
EVP_PKEY *peer = NULL;
int ret;
if (!ctx)
{
BIO_puts(err, "-peerkey command before -inkey\n");
return 0;
}
peer = load_pubkey(bio_err, file, peerform, 0, NULL, NULL, "Peer Key");
if (!peer)
{
BIO_printf(bio_err, "Error reading peer key %s\n", file);
ERR_print_errors(err);
return 0;
}
ret = EVP_PKEY_derive_set_peer(ctx, peer);
EVP_PKEY_free(peer);
if (ret <= 0)
ERR_print_errors(err);
return ret;
}
static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
unsigned char *out, size_t *poutlen,
unsigned char *in, size_t inlen)
{
int rv = 0;
switch(pkey_op)
{
case EVP_PKEY_OP_VERIFYRECOVER:
rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_SIGN:
rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_ENCRYPT:
rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_DECRYPT:
rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
break;
case EVP_PKEY_OP_DERIVE:
rv = EVP_PKEY_derive(ctx, out, poutlen);
break;
}
return rv;
}
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