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openssl/apps/pkeyutl.c
Richard Levitte bdd58d9846 Change the way apps open their input and output files 
The different apps had the liberty to decide whether they would open their
input and output files in binary mode or not, which could be confusing if
two different apps were handling the same type of file in different ways.

The solution is to centralise the decision of low level file organisation,
and that the apps would use a selection of formats to state the intent of
the file.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-09-06 01:35:54 +02:00

475 lines
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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 EVP_PKEY_CTX *init_ctx(int *pkeysize,
char *keyfile, int keyform, int key_type,
char *passinarg, int pkey_op, ENGINE *e);
static int setup_peer(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);
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_ENGINE, OPT_IN, OPT_OUT,
OPT_PUBIN, OPT_CERTIN, OPT_ASN1PARSE, OPT_HEXDUMP, OPT_SIGN,
OPT_VERIFY, OPT_VERIFYRECOVER, OPT_REV, OPT_ENCRYPT, OPT_DECRYPT,
OPT_DERIVE, OPT_SIGFILE, OPT_INKEY, OPT_PEERKEY, OPT_PASSIN,
OPT_PEERFORM, OPT_KEYFORM, OPT_PKEYOPT
} OPTION_CHOICE;
OPTIONS pkeyutl_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"in", OPT_IN, '<', "Input file"},
{"out", OPT_OUT, '>', "Output file"},
{"pubin", OPT_PUBIN, '-', "Input is a public key"},
{"certin", OPT_CERTIN, '-', "Input is a cert with a public key"},
{"asn1parse", OPT_ASN1PARSE, '-'},
{"hexdump", OPT_HEXDUMP, '-', "Hex dump output"},
{"sign", OPT_SIGN, '-', "Sign with private key"},
{"verify", OPT_VERIFY, '-', "Verify with public key"},
{"verifyrecover", OPT_VERIFYRECOVER, '-',
"Verify with public key, recover original data"},
{"rev", OPT_REV, '-'},
{"encrypt", OPT_ENCRYPT, '-', "Encrypt with public key"},
{"decrypt", OPT_DECRYPT, '-', "Decrypt with private key"},
{"derive", OPT_DERIVE, '-', "Derive shared secret"},
{"sigfile", OPT_SIGFILE, '<', "Signature file (verify operation only)"},
{"inkey", OPT_INKEY, 's', "Input key"},
{"peerkey", OPT_PEERKEY, 's'},
{"passin", OPT_PASSIN, 's', "Pass phrase source"},
{"peerform", OPT_PEERFORM, 'F'},
{"keyform", OPT_KEYFORM, 'F', "Private key format - default PEM"},
{"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
#ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
#endif
{NULL}
};
int pkeyutl_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
ENGINE *e = NULL;
EVP_PKEY_CTX *ctx = NULL;
char *infile = NULL, *outfile = NULL, *sigfile = NULL, *passinarg = NULL;
char hexdump = 0, asn1parse = 0, rev = 0, *prog;
unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
OPTION_CHOICE o;
int buf_inlen = 0, siglen = -1, keyform = FORMAT_PEM, peerform =
FORMAT_PEM;
int keysize = -1, pkey_op = EVP_PKEY_OP_SIGN, key_type = KEY_PRIVKEY;
int ret = 1, rv = -1;
size_t buf_outlen;
prog = opt_init(argc, argv, pkeyutl_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(pkeyutl_options);
ret = 0;
goto end;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_SIGFILE:
sigfile = opt_arg();
break;
case OPT_INKEY:
ctx = init_ctx(&keysize, opt_arg(), keyform, key_type,
passinarg, pkey_op, e);
if (ctx == NULL) {
BIO_puts(bio_err, "%s: Error initializing context\n");
ERR_print_errors(bio_err);
goto opthelp;
}
break;
case OPT_PEERKEY:
if (!setup_peer(ctx, peerform, opt_arg()))
goto opthelp;
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_PEERFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &peerform))
goto opthelp;
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyform))
goto opthelp;
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_PUBIN:
key_type = KEY_PUBKEY;
break;
case OPT_CERTIN:
key_type = KEY_CERT;
break;
case OPT_ASN1PARSE:
asn1parse = 1;
break;
case OPT_HEXDUMP:
hexdump = 1;
break;
case OPT_SIGN:
pkey_op = EVP_PKEY_OP_SIGN;
break;
case OPT_VERIFY:
pkey_op = EVP_PKEY_OP_VERIFY;
break;
case OPT_VERIFYRECOVER:
pkey_op = EVP_PKEY_OP_VERIFYRECOVER;
break;
case OPT_REV:
rev = 1;
break;
case OPT_ENCRYPT:
pkey_op = EVP_PKEY_OP_ENCRYPT;
break;
case OPT_DECRYPT:
pkey_op = EVP_PKEY_OP_DECRYPT;
break;
case OPT_DERIVE:
pkey_op = EVP_PKEY_OP_DERIVE;
break;
case OPT_PKEYOPT:
if (ctx == NULL) {
BIO_printf(bio_err,
"%s: Must have -inkey before -pkeyopt\n", prog);
goto opthelp;
}
if (pkey_ctrl_string(ctx, opt_arg()) <= 0) {
BIO_printf(bio_err, "%s: Can't set parameter:\n", prog);
ERR_print_errors(bio_err);
goto end;
}
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (ctx == NULL)
goto opthelp;
if (!app_load_modules(NULL))
goto end;
if (sigfile && (pkey_op != EVP_PKEY_OP_VERIFY)) {
BIO_printf(bio_err,
"%s: Signature file specified for non verify\n", prog);
goto end;
}
if (!sigfile && (pkey_op == EVP_PKEY_OP_VERIFY)) {
BIO_printf(bio_err,
"%s: No signature file specified for verify\n", prog);
goto end;
}
/* FIXME: seed PRNG only if needed */
app_RAND_load_file(NULL, 0);
if (pkey_op != EVP_PKEY_OP_DERIVE) {
in = bio_open_default(infile, 'r', FORMAT_BINARY);
if (in == NULL)
goto end;
}
out = bio_open_default(outfile, 'w', FORMAT_BINARY);
if (out == NULL)
goto end;
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");
goto end;
}
rv = do_keyop(ctx, pkey_op, NULL, (size_t *)&buf_outlen,
buf_in, (size_t)buf_inlen);
if (rv > 0) {
buf_out = app_malloc(buf_outlen, "buffer output");
rv = do_keyop(ctx, pkey_op,
buf_out, (size_t *)&buf_outlen,
buf_in, (size_t)buf_inlen);
}
if (rv <= 0) {
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:
EVP_PKEY_CTX_free(ctx);
BIO_free(in);
BIO_free_all(out);
OPENSSL_free(buf_in);
OPENSSL_free(buf_out);
OPENSSL_free(sig);
return ret;
}
static EVP_PKEY_CTX *init_ctx(int *pkeysize,
char *keyfile, int keyform, int key_type,
char *passinarg, 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(passinarg, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
switch (key_type) {
case KEY_PRIVKEY:
pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
break;
case KEY_PUBKEY:
pkey = load_pubkey(keyfile, keyform, 0, NULL, e, "Public Key");
break;
case KEY_CERT:
x = load_cert(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:
OPENSSL_free(passin);
return ctx;
}
static int setup_peer(EVP_PKEY_CTX *ctx, int peerform, const char *file)
{
EVP_PKEY *peer = NULL;
int ret;
if (!ctx) {
BIO_puts(bio_err, "-peerkey command before -inkey\n");
return 0;
}
peer = load_pubkey(file, peerform, 0, NULL, NULL, "Peer Key");
if (!peer) {
BIO_printf(bio_err, "Error reading peer key %s\n", file);
ERR_print_errors(bio_err);
return 0;
}
ret = EVP_PKEY_derive_set_peer(ctx, peer);
EVP_PKEY_free(peer);
if (ret <= 0)
ERR_print_errors(bio_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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