345 lines
11 KiB
C
345 lines
11 KiB
C
/*
|
|
* Certificate request generation
|
|
*
|
|
* Copyright (C) 2006-2011, Brainspark B.V.
|
|
*
|
|
* This file is part of PolarSSL (http://www.polarssl.org)
|
|
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifndef _CRT_SECURE_NO_DEPRECATE
|
|
#define _CRT_SECURE_NO_DEPRECATE 1
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#include "polarssl/config.h"
|
|
|
|
#include "polarssl/x509write.h"
|
|
#include "polarssl/entropy.h"
|
|
#include "polarssl/ctr_drbg.h"
|
|
#include "polarssl/error.h"
|
|
|
|
#if !defined(POLARSSL_X509_WRITE_C) || !defined(POLARSSL_X509_PARSE_C) || \
|
|
!defined(POLARSSL_FS_IO) || \
|
|
!defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C)
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
((void) argc);
|
|
((void) argv);
|
|
|
|
printf( "POLARSSL_X509_WRITE_C and/or POLARSSL_X509_PARSE_C and/or "
|
|
"POLARSSL_FS_IO and/or "
|
|
"POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C "
|
|
"not defined.\n");
|
|
return( 0 );
|
|
}
|
|
#else
|
|
|
|
#define DFL_FILENAME "keyfile.key"
|
|
#define DFL_DEBUG_LEVEL 0
|
|
#define DFL_OUTPUT_FILENAME "cert.req"
|
|
#define DFL_SUBJECT_NAME "CN=Cert,O=PolarSSL,C=NL"
|
|
#define DFL_KEY_USAGE 0
|
|
#define DFL_NS_CERT_TYPE 0
|
|
|
|
/*
|
|
* global options
|
|
*/
|
|
struct options
|
|
{
|
|
char *filename; /* filename of the key file */
|
|
int debug_level; /* level of debugging */
|
|
char *output_file; /* where to store the constructed key file */
|
|
char *subject_name; /* subject name for certificate request */
|
|
unsigned char key_usage; /* key usage flags */
|
|
unsigned char ns_cert_type; /* NS cert type */
|
|
} opt;
|
|
|
|
int write_certificate_request( x509write_csr *req, char *output_file,
|
|
int (*f_rng)(void *, unsigned char *, size_t),
|
|
void *p_rng )
|
|
{
|
|
int ret;
|
|
FILE *f;
|
|
unsigned char output_buf[4096];
|
|
size_t len = 0;
|
|
|
|
memset( output_buf, 0, 4096 );
|
|
if( ( ret = x509write_csr_pem( req, output_buf, 4096, f_rng, p_rng ) ) < 0 )
|
|
return( ret );
|
|
|
|
len = strlen( (char *) output_buf );
|
|
|
|
if( ( f = fopen( output_file, "w" ) ) == NULL )
|
|
return( -1 );
|
|
|
|
if( fwrite( output_buf, 1, len, f ) != len )
|
|
return( -1 );
|
|
|
|
fclose(f);
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
#define USAGE \
|
|
"\n usage: cert_req param=<>...\n" \
|
|
"\n acceptable parameters:\n" \
|
|
" filename=%%s default: keyfile.key\n" \
|
|
" debug_level=%%d default: 0 (disabled)\n" \
|
|
" output_file=%%s default: cert.req\n" \
|
|
" subject_name=%%s default: CN=Cert,O=PolarSSL,C=NL\n" \
|
|
" key_usage=%%s default: (empty)\n" \
|
|
" Comma-separated-list of values:\n" \
|
|
" digital_signature\n" \
|
|
" non_repudiation\n" \
|
|
" key_encipherment\n" \
|
|
" data_encipherment\n" \
|
|
" key_agreement\n" \
|
|
" key_certificate_sign\n" \
|
|
" crl_sign\n" \
|
|
" ns_cert_type=%%s default: (empty)\n" \
|
|
" Comma-separated-list of values:\n" \
|
|
" ssl_client\n" \
|
|
" ssl_server\n" \
|
|
" email\n" \
|
|
" object_signing\n" \
|
|
" ssl_ca\n" \
|
|
" email_ca\n" \
|
|
" object_signing_ca\n" \
|
|
"\n"
|
|
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
int ret = 0;
|
|
pk_context key;
|
|
char buf[1024];
|
|
int i, j, n;
|
|
char *p, *q, *r;
|
|
x509write_csr req;
|
|
entropy_context entropy;
|
|
ctr_drbg_context ctr_drbg;
|
|
const char *pers = "csr example app";
|
|
|
|
/*
|
|
* Set to sane values
|
|
*/
|
|
x509write_csr_init( &req );
|
|
x509write_csr_set_md_alg( &req, POLARSSL_MD_SHA1 );
|
|
pk_init( &key );
|
|
memset( buf, 0, sizeof( buf ) );
|
|
|
|
if( argc == 0 )
|
|
{
|
|
usage:
|
|
printf( USAGE );
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
opt.filename = DFL_FILENAME;
|
|
opt.debug_level = DFL_DEBUG_LEVEL;
|
|
opt.output_file = DFL_OUTPUT_FILENAME;
|
|
opt.subject_name = DFL_SUBJECT_NAME;
|
|
opt.key_usage = DFL_KEY_USAGE;
|
|
opt.ns_cert_type = DFL_NS_CERT_TYPE;
|
|
|
|
for( i = 1; i < argc; i++ )
|
|
{
|
|
|
|
p = argv[i];
|
|
if( ( q = strchr( p, '=' ) ) == NULL )
|
|
goto usage;
|
|
*q++ = '\0';
|
|
|
|
n = strlen( p );
|
|
for( j = 0; j < n; j++ )
|
|
{
|
|
if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
|
|
argv[i][j] |= 0x20;
|
|
}
|
|
|
|
if( strcmp( p, "filename" ) == 0 )
|
|
opt.filename = q;
|
|
else if( strcmp( p, "output_file" ) == 0 )
|
|
opt.output_file = q;
|
|
else if( strcmp( p, "debug_level" ) == 0 )
|
|
{
|
|
opt.debug_level = atoi( q );
|
|
if( opt.debug_level < 0 || opt.debug_level > 65535 )
|
|
goto usage;
|
|
}
|
|
else if( strcmp( p, "subject_name" ) == 0 )
|
|
{
|
|
opt.subject_name = q;
|
|
}
|
|
else if( strcmp( p, "key_usage" ) == 0 )
|
|
{
|
|
while( q != NULL )
|
|
{
|
|
if( ( r = strchr( q, ',' ) ) != NULL )
|
|
*r++ = '\0';
|
|
|
|
if( strcmp( q, "digital_signature" ) == 0 )
|
|
opt.key_usage |= KU_DIGITAL_SIGNATURE;
|
|
else if( strcmp( q, "non_repudiation" ) == 0 )
|
|
opt.key_usage |= KU_NON_REPUDIATION;
|
|
else if( strcmp( q, "key_encipherment" ) == 0 )
|
|
opt.key_usage |= KU_KEY_ENCIPHERMENT;
|
|
else if( strcmp( q, "data_encipherment" ) == 0 )
|
|
opt.key_usage |= KU_DATA_ENCIPHERMENT;
|
|
else if( strcmp( q, "key_agreement" ) == 0 )
|
|
opt.key_usage |= KU_KEY_AGREEMENT;
|
|
else if( strcmp( q, "key_cert_sign" ) == 0 )
|
|
opt.key_usage |= KU_KEY_CERT_SIGN;
|
|
else if( strcmp( q, "crl_sign" ) == 0 )
|
|
opt.key_usage |= KU_CRL_SIGN;
|
|
else
|
|
goto usage;
|
|
|
|
q = r;
|
|
}
|
|
}
|
|
else if( strcmp( p, "ns_cert_type" ) == 0 )
|
|
{
|
|
while( q != NULL )
|
|
{
|
|
if( ( r = strchr( q, ',' ) ) != NULL )
|
|
*r++ = '\0';
|
|
|
|
if( strcmp( q, "ssl_client" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_SSL_CLIENT;
|
|
else if( strcmp( q, "ssl_server" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_SSL_SERVER;
|
|
else if( strcmp( q, "email" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_EMAIL;
|
|
else if( strcmp( q, "object_signing" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_OBJECT_SIGNING;
|
|
else if( strcmp( q, "ssl_ca" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_SSL_CA;
|
|
else if( strcmp( q, "email_ca" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_EMAIL_CA;
|
|
else if( strcmp( q, "object_signing_ca" ) == 0 )
|
|
opt.ns_cert_type |= NS_CERT_TYPE_OBJECT_SIGNING_CA;
|
|
else
|
|
goto usage;
|
|
|
|
q = r;
|
|
}
|
|
}
|
|
else
|
|
goto usage;
|
|
}
|
|
|
|
if( opt.key_usage )
|
|
x509write_csr_set_key_usage( &req, opt.key_usage );
|
|
|
|
if( opt.ns_cert_type )
|
|
x509write_csr_set_ns_cert_type( &req, opt.ns_cert_type );
|
|
|
|
/*
|
|
* 0. Seed the PRNG
|
|
*/
|
|
printf( " . Seeding the random number generator..." );
|
|
fflush( stdout );
|
|
|
|
entropy_init( &entropy );
|
|
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
|
|
(const unsigned char *) pers,
|
|
strlen( pers ) ) ) != 0 )
|
|
{
|
|
printf( " failed\n ! ctr_drbg_init returned %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.0. Check the subject name for validity
|
|
*/
|
|
printf( " . Checking subjet name..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = x509write_csr_set_subject_name( &req, opt.subject_name ) ) != 0 )
|
|
{
|
|
printf( " failed\n ! x509write_csr_set_subject_name returned %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.1. Load the key
|
|
*/
|
|
printf( " . Loading the private key ..." );
|
|
fflush( stdout );
|
|
|
|
ret = x509parse_keyfile( &key, opt.filename, NULL );
|
|
|
|
if( ret != 0 )
|
|
{
|
|
printf( " failed\n ! x509parse_keyfile returned %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
x509write_csr_set_key( &req, &key );
|
|
|
|
printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.2. Writing the request
|
|
*/
|
|
printf( " . Writing the certificate request ..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = write_certificate_request( &req, opt.output_file,
|
|
ctr_drbg_random, &ctr_drbg ) ) != 0 )
|
|
{
|
|
printf( " failed\n ! write_certifcate_request %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
printf( " ok\n" );
|
|
|
|
exit:
|
|
|
|
if( ret != 0 && ret != 1)
|
|
{
|
|
#ifdef POLARSSL_ERROR_C
|
|
polarssl_strerror( ret, buf, sizeof( buf ) );
|
|
printf( " - %s\n", buf );
|
|
#else
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
|
|
x509write_csr_free( &req );
|
|
pk_free( &key );
|
|
|
|
#if defined(_WIN32)
|
|
printf( " + Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( ret );
|
|
}
|
|
#endif /* POLARSSL_X509_WRITE_C && POLARSSL_X509_PARSE_C && POLARSSL_FS_IO &&
|
|
POLARSSL_ENTROPY_C && POLARSSL_CTR_DRBG_C */
|