ecdsa.c
/* apps/ecdsa.c */
/* ====================================================================
* Copyright (c) 1998-2002 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
* openssl-core@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).
*
*/
/* 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.]
*/
#ifndef OPENSSL_NO_ECDSA
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/ecdsa.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#undef PROG
#define PROG ecdsa_main
/* -inform arg - input format - default PEM (one of DER, NET or PEM)
* -outform arg - output format - default PEM
* -in arg - input file - default stdin
* -out arg - output file - default stdout
* -des - encrypt output if PEM format with DES in cbc mode
* -des3 - encrypt output if PEM format
* -idea - encrypt output if PEM format
* -aes128 - encrypt output if PEM format
* -aes192 - encrypt output if PEM format
* -aes256 - encrypt output if PEM format
* -text - print a text version
* -pub - print the ECDSA public key
* -compressed - print the public key in compressed form ( default )
* -hybrid - print the public key in hybrid form
* -uncompressed - print the public key in uncompressed form
* the last three options ( compressed, hybrid and uncompressed )
* are only used if the "-pub" option is also selected.
* For a precise description of the the meaning of compressed,
* hybrid and uncompressed please refer to the X9.62 standart.
* All three forms represents ways to express the ecdsa public
* key ( a point on a elliptic curve ) as octet string. Let len be
* the length ( in bytes ) of an element of the field over which
* the curve is defined, then a compressed octet string has the form
* 0x02 + result of BN_bn2bin() of the x coordinate of the public key
*/
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
int ret = 1;
ECDSA *ecdsa = NULL;
int i, badops = 0;
const EVP_CIPHER *enc = NULL;
BIO *in = NULL, *out = NULL;
int informat, outformat, text=0, noout=0;
int pubin = 0, pubout = 0;
char *infile, *outfile, *prog, *engine;
char *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL;
int pub = 0, point_form = 0;
unsigned char *buffer = NULL;
unsigned int buf_len = 0;
BIGNUM *tmp_bn = 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);
if (!load_config(bio_err, NULL))
goto end;
engine = NULL;
infile = NULL;
outfile = NULL;
informat = FORMAT_PEM;
outformat = FORMAT_PEM;
prog = argv[0];
argc--;
argv++;
while (argc >= 1)
{
if (strcmp(*argv,"-inform") == 0)
{
if (--argc < 1) goto bad;
informat=str2fmt(*(++argv));
}
else if (strcmp(*argv,"-outform") == 0)
{
if (--argc < 1) goto bad;
outformat=str2fmt(*(++argv));
}
else if (strcmp(*argv,"-in") == 0)
{
if (--argc < 1) goto bad;
infile= *(++argv);
}
else if (strcmp(*argv,"-out") == 0)
{
if (--argc < 1) goto bad;
outfile= *(++argv);
}
else if (strcmp(*argv,"-passin") == 0)
{
if (--argc < 1) goto bad;
passargin= *(++argv);
}
else if (strcmp(*argv,"-passout") == 0)
{
if (--argc < 1) goto bad;
passargout= *(++argv);
}
else if (strcmp(*argv, "-engine") == 0)
{
if (--argc < 1) goto bad;
engine= *(++argv);
}
else if (strcmp(*argv, "-noout") == 0)
noout = 1;
else if (strcmp(*argv, "-text") == 0)
text = 1;
else if (strcmp(*argv, "-pub") == 0)
{
pub = 1;
buffer = (unsigned char *)(*(argv+1));
if (strcmp((char *)buffer, "compressed") == 0)
point_form = POINT_CONVERSION_COMPRESSED;
else if (strcmp((char *)buffer, "hybrid") == 0)
point_form = POINT_CONVERSION_HYBRID;
else if (strcmp((char *)buffer, "uncompressed") == 0)
point_form = POINT_CONVERSION_UNCOMPRESSED;
if (point_form)
{
argc--;
argv++;
}
}
else if (strcmp(*argv, "-pubin") == 0)
pubin=1;
else if (strcmp(*argv, "-pubout") == 0)
pubout=1;
else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)
{
BIO_printf(bio_err,"unknown option %s\n",*argv);
badops=1;
break;
}
argc--;
argv++;
}
if (badops)
{
bad:
BIO_printf(bio_err, "%s [options] <infile >outfile\n",prog);
BIO_printf(bio_err, "where options are\n");
BIO_printf(bio_err, " -inform arg input format - DER or PEM\n");
BIO_printf(bio_err, " -outform arg output format - DER or PEM\n");
BIO_printf(bio_err, " -in arg input file\n");
BIO_printf(bio_err, " -passin arg input file pass phrase source\n");
BIO_printf(bio_err, " -out arg output file\n");
BIO_printf(bio_err, " -passout arg output file pass phrase source\n");
BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n");
BIO_printf(bio_err, " -des encrypt PEM output with cbc des\n");
BIO_printf(bio_err, " -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
#ifndef OPENSSL_NO_IDEA
BIO_printf(bio_err, " -idea encrypt PEM output with cbc idea\n");
#endif
#ifndef OPENSSL_NO_AES
BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
BIO_printf(bio_err, " encrypt PEM output with cbc aes\n");
#endif
BIO_printf(bio_err, " -text print the key in text\n");
BIO_printf(bio_err, " -noout don't print key out\n");
BIO_printf(bio_err, " -pub [compressed | hybrid | uncompressed] \n");
BIO_printf(bio_err, " compressed print the public key in compressed form ( default )\n");
BIO_printf(bio_err, " hybrid print the public key in hybrid form\n");
BIO_printf(bio_err, " uncompressed print the public key in uncompressed form\n");
goto end;
}
ERR_load_crypto_strings();
e = setup_engine(bio_err, engine, 0);
if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
{
BIO_printf(bio_err, "Error getting passwords\n");
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 (infile == NULL)
BIO_set_fp(in,stdin,BIO_NOCLOSE);
else
{
if (BIO_read_filename(in,infile) <= 0)
{
perror(infile);
goto end;
}
}
BIO_printf(bio_err,"read ECDSA key\n");
if (informat == FORMAT_ASN1)
{
if (pubin)
ecdsa = d2i_ECDSA_PUBKEY_bio(in, NULL);
else
ecdsa = d2i_ECDSAPrivateKey_bio(in, NULL);
} else if (informat == FORMAT_PEM)
{
if (pubin)
ecdsa = PEM_read_bio_ECDSA_PUBKEY(in, NULL, NULL, NULL);
else
ecdsa = PEM_read_bio_ECDSAPrivateKey(in, NULL, NULL, passin);
} else
{
BIO_printf(bio_err, "bad input format specified for key\n");
goto end;
}
if (ecdsa == NULL)
{
BIO_printf(bio_err,"unable to load Key\n");
ERR_print_errors(bio_err);
goto end;
}
if (outfile == NULL)
{
BIO_set_fp(out, stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
#endif
}
else
{
if (BIO_write_filename(out, outfile) <= 0)
{
perror(outfile);
goto end;
}
}
if (text)
if (!ECDSA_print(out, ecdsa, 0))
{
perror(outfile);
ERR_print_errors(bio_err);
goto end;
}
if (pub)
{
fprintf(stdout, "Public Key (");
if (point_form == POINT_CONVERSION_COMPRESSED)
fprintf(stdout, "COMPRESSED");
else if (point_form == POINT_CONVERSION_UNCOMPRESSED)
fprintf(stdout, "UNCOMPRESSED");
else if (point_form == POINT_CONVERSION_HYBRID)
fprintf(stdout, "HYBRID");
fprintf(stdout, ")=");
buf_len = EC_POINT_point2oct(ecdsa->group, EC_GROUP_get0_generator(ecdsa->group),
point_form, NULL, 0, NULL);
if (!buf_len)
{
BIO_printf(bio_err,"invalid public key length\n");
ERR_print_errors(bio_err);
goto end;
}
if ((tmp_bn = BN_new()) == NULL ||
(buffer = OPENSSL_malloc(buf_len)) == NULL) goto end;
if (!EC_POINT_point2oct(ecdsa->group, EC_GROUP_get0_generator(ecdsa->group),
point_form, buffer, buf_len, NULL) ||
!BN_bin2bn(buffer, buf_len, tmp_bn))
{
BIO_printf(bio_err,"can not encode public key\n");
ERR_print_errors(bio_err);
OPENSSL_free(buffer);
goto end;
}
BN_print(out, tmp_bn);
fprintf(stdout,"\n");
}
if (noout)
goto end;
BIO_printf(bio_err, "writing ECDSA key\n");
if (outformat == FORMAT_ASN1)
{
if(pubin || pubout)
i = i2d_ECDSA_PUBKEY_bio(out, ecdsa);
else
i = i2d_ECDSAPrivateKey_bio(out, ecdsa);
} else if (outformat == FORMAT_PEM)
{
if(pubin || pubout)
i = PEM_write_bio_ECDSA_PUBKEY(out, ecdsa);
else
i = PEM_write_bio_ECDSAPrivateKey(out, ecdsa, enc,
NULL, 0, NULL, passout);
} else
{
BIO_printf(bio_err, "bad output format specified for outfile\n");
goto end;
}
if (!i)
{
BIO_printf(bio_err, "unable to write private key\n");
ERR_print_errors(bio_err);
}
else
ret=0;
end:
if (in) BIO_free(in);
if (out) BIO_free_all(out);
if (ecdsa) ECDSA_free(ecdsa);
if (tmp_bn) BN_free(tmp_bn);
if (passin) OPENSSL_free(passin);
if (passout) OPENSSL_free(passout);
apps_shutdown();
EXIT(ret);
}
#endif
