Return to pkeyutl.c CVS log

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Remove engine command and parameters from openssl(1).

We do not have any builtin or dynamic engines, meaning openssl(1) has
no way to use the engine command or parameters at all.

ok jsing@

/* $OpenBSD: pkeyutl.c,v 1.7 2015/09/11 14:30:23 bcook Exp $ */
/* 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 <string.h>

#include "apps.h"

#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>

#define KEY_PRIVKEY	1
#define KEY_PUBKEY	2
#define KEY_CERT	3

static void usage(void);

static EVP_PKEY_CTX *init_ctx(int *pkeysize,
    char *keyfile, int keyform, int key_type,
    char *passargin, int pkey_op);

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
pkeyutl_main(int argc, char **argv)
{
	BIO *in = NULL, *out = NULL;
	char *infile = NULL, *outfile = NULL, *sigfile = 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++;

	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);
				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));
		}
		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;
	}

	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);
	}

	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 == 1) {
			BIO_puts(out, "Signature Verified Successfully\n");
			ret = 0;
		} else
			BIO_puts(out, "Signature Verification Failure\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 = 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);
	free(buf_in);
	free(buf_out);
	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");
	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)
{
	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, "Private Key");
		break;

	case KEY_PUBKEY:
		pkey = load_pubkey(bio_err, keyfile, keyform, 0,
		    NULL, "Public Key");
		break;

	case KEY_CERT:
		x = load_cert(bio_err, keyfile, keyform,
		    NULL, "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, NULL);

	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:

	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, "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;
}