c662b36af2
Also remove preprocessor logic for MBEDTLS_CONFIG_FILE, since build_info.h alreadyy handles it. This commit was generated using the following script: # ======================== #!/bin/sh git ls-files | grep -v '^include/mbedtls/build_info\.h$' | xargs sed -b -E -i ' /^#if !?defined\(MBEDTLS_CONFIG_FILE\)/i#include "mbedtls/build_info.h" //,/^#endif/d ' # ======================== Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
400 lines
13 KiB
C
400 lines
13 KiB
C
/*
|
|
* Certificate request generation
|
|
*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "mbedtls/build_info.h"
|
|
|
|
#if defined(MBEDTLS_PLATFORM_C)
|
|
#include "mbedtls/platform.h"
|
|
#else
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#define mbedtls_printf printf
|
|
#define mbedtls_exit exit
|
|
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
|
|
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
|
|
#endif /* MBEDTLS_PLATFORM_C */
|
|
|
|
#if !defined(MBEDTLS_X509_CSR_WRITE_C) || !defined(MBEDTLS_FS_IO) || \
|
|
!defined(MBEDTLS_PK_PARSE_C) || !defined(MBEDTLS_SHA256_C) || \
|
|
!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) || \
|
|
!defined(MBEDTLS_PEM_WRITE_C)
|
|
int main( void )
|
|
{
|
|
mbedtls_printf( "MBEDTLS_X509_CSR_WRITE_C and/or MBEDTLS_FS_IO and/or "
|
|
"MBEDTLS_PK_PARSE_C and/or MBEDTLS_SHA256_C and/or "
|
|
"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C "
|
|
"not defined.\n");
|
|
mbedtls_exit( 0 );
|
|
}
|
|
#else
|
|
|
|
#include "mbedtls/x509_csr.h"
|
|
#include "mbedtls/entropy.h"
|
|
#include "mbedtls/ctr_drbg.h"
|
|
#include "mbedtls/error.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#define DFL_FILENAME "keyfile.key"
|
|
#define DFL_PASSWORD NULL
|
|
#define DFL_DEBUG_LEVEL 0
|
|
#define DFL_OUTPUT_FILENAME "cert.req"
|
|
#define DFL_SUBJECT_NAME "CN=Cert,O=mbed TLS,C=UK"
|
|
#define DFL_KEY_USAGE 0
|
|
#define DFL_FORCE_KEY_USAGE 0
|
|
#define DFL_NS_CERT_TYPE 0
|
|
#define DFL_FORCE_NS_CERT_TYPE 0
|
|
#define DFL_MD_ALG MBEDTLS_MD_SHA256
|
|
|
|
#define USAGE \
|
|
"\n usage: cert_req param=<>...\n" \
|
|
"\n acceptable parameters:\n" \
|
|
" filename=%%s default: keyfile.key\n" \
|
|
" password=%%s default: NULL\n" \
|
|
" debug_level=%%d default: 0 (disabled)\n" \
|
|
" output_file=%%s default: cert.req\n" \
|
|
" subject_name=%%s default: CN=Cert,O=mbed TLS,C=UK\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_cert_sign\n" \
|
|
" crl_sign\n" \
|
|
" force_key_usage=0/1 default: off\n" \
|
|
" Add KeyUsage even if it is empty\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" \
|
|
" force_ns_cert_type=0/1 default: off\n" \
|
|
" Add NsCertType even if it is empty\n" \
|
|
" md=%%s default: SHA256\n" \
|
|
" possible values:\n" \
|
|
" MD5, RIPEMD160, SHA1,\n" \
|
|
" SHA224, SHA256, SHA384, SHA512\n" \
|
|
"\n"
|
|
|
|
|
|
/*
|
|
* global options
|
|
*/
|
|
struct options
|
|
{
|
|
const char *filename; /* filename of the key file */
|
|
const char *password; /* password for the key file */
|
|
int debug_level; /* level of debugging */
|
|
const char *output_file; /* where to store the constructed key file */
|
|
const char *subject_name; /* subject name for certificate request */
|
|
unsigned char key_usage; /* key usage flags */
|
|
int force_key_usage; /* Force adding the KeyUsage extension */
|
|
unsigned char ns_cert_type; /* NS cert type */
|
|
int force_ns_cert_type; /* Force adding NsCertType extension */
|
|
mbedtls_md_type_t md_alg; /* Hash algorithm used for signature. */
|
|
} opt;
|
|
|
|
int write_certificate_request( mbedtls_x509write_csr *req, const 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 = mbedtls_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 )
|
|
{
|
|
fclose( f );
|
|
return( -1 );
|
|
}
|
|
|
|
fclose( f );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
int ret = 1;
|
|
int exit_code = MBEDTLS_EXIT_FAILURE;
|
|
mbedtls_pk_context key;
|
|
char buf[1024];
|
|
int i;
|
|
char *p, *q, *r;
|
|
mbedtls_x509write_csr req;
|
|
mbedtls_entropy_context entropy;
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
|
const char *pers = "csr example app";
|
|
|
|
/*
|
|
* Set to sane values
|
|
*/
|
|
mbedtls_x509write_csr_init( &req );
|
|
mbedtls_pk_init( &key );
|
|
mbedtls_ctr_drbg_init( &ctr_drbg );
|
|
memset( buf, 0, sizeof( buf ) );
|
|
|
|
if( argc == 0 )
|
|
{
|
|
usage:
|
|
mbedtls_printf( USAGE );
|
|
goto exit;
|
|
}
|
|
|
|
opt.filename = DFL_FILENAME;
|
|
opt.password = DFL_PASSWORD;
|
|
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.force_key_usage = DFL_FORCE_KEY_USAGE;
|
|
opt.ns_cert_type = DFL_NS_CERT_TYPE;
|
|
opt.force_ns_cert_type = DFL_FORCE_NS_CERT_TYPE;
|
|
opt.md_alg = DFL_MD_ALG;
|
|
|
|
for( i = 1; i < argc; i++ )
|
|
{
|
|
|
|
p = argv[i];
|
|
if( ( q = strchr( p, '=' ) ) == NULL )
|
|
goto usage;
|
|
*q++ = '\0';
|
|
|
|
if( strcmp( p, "filename" ) == 0 )
|
|
opt.filename = q;
|
|
else if( strcmp( p, "password" ) == 0 )
|
|
opt.password = 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, "md" ) == 0 )
|
|
{
|
|
const mbedtls_md_info_t *md_info =
|
|
mbedtls_md_info_from_string( q );
|
|
if( md_info == NULL )
|
|
{
|
|
mbedtls_printf( "Invalid argument for option %s\n", p );
|
|
goto usage;
|
|
}
|
|
opt.md_alg = mbedtls_md_get_type( md_info );
|
|
}
|
|
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 |= MBEDTLS_X509_KU_DIGITAL_SIGNATURE;
|
|
else if( strcmp( q, "non_repudiation" ) == 0 )
|
|
opt.key_usage |= MBEDTLS_X509_KU_NON_REPUDIATION;
|
|
else if( strcmp( q, "key_encipherment" ) == 0 )
|
|
opt.key_usage |= MBEDTLS_X509_KU_KEY_ENCIPHERMENT;
|
|
else if( strcmp( q, "data_encipherment" ) == 0 )
|
|
opt.key_usage |= MBEDTLS_X509_KU_DATA_ENCIPHERMENT;
|
|
else if( strcmp( q, "key_agreement" ) == 0 )
|
|
opt.key_usage |= MBEDTLS_X509_KU_KEY_AGREEMENT;
|
|
else if( strcmp( q, "key_cert_sign" ) == 0 )
|
|
opt.key_usage |= MBEDTLS_X509_KU_KEY_CERT_SIGN;
|
|
else if( strcmp( q, "crl_sign" ) == 0 )
|
|
opt.key_usage |= MBEDTLS_X509_KU_CRL_SIGN;
|
|
else
|
|
goto usage;
|
|
|
|
q = r;
|
|
}
|
|
}
|
|
else if( strcmp( p, "force_key_usage" ) == 0 )
|
|
{
|
|
switch( atoi( q ) )
|
|
{
|
|
case 0: opt.force_key_usage = 0; break;
|
|
case 1: opt.force_key_usage = 1; break;
|
|
default: goto usage;
|
|
}
|
|
}
|
|
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 |= MBEDTLS_X509_NS_CERT_TYPE_SSL_CLIENT;
|
|
else if( strcmp( q, "ssl_server" ) == 0 )
|
|
opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_SSL_SERVER;
|
|
else if( strcmp( q, "email" ) == 0 )
|
|
opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_EMAIL;
|
|
else if( strcmp( q, "object_signing" ) == 0 )
|
|
opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING;
|
|
else if( strcmp( q, "ssl_ca" ) == 0 )
|
|
opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_SSL_CA;
|
|
else if( strcmp( q, "email_ca" ) == 0 )
|
|
opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_EMAIL_CA;
|
|
else if( strcmp( q, "object_signing_ca" ) == 0 )
|
|
opt.ns_cert_type |= MBEDTLS_X509_NS_CERT_TYPE_OBJECT_SIGNING_CA;
|
|
else
|
|
goto usage;
|
|
|
|
q = r;
|
|
}
|
|
}
|
|
else if( strcmp( p, "force_ns_cert_type" ) == 0 )
|
|
{
|
|
switch( atoi( q ) )
|
|
{
|
|
case 0: opt.force_ns_cert_type = 0; break;
|
|
case 1: opt.force_ns_cert_type = 1; break;
|
|
default: goto usage;
|
|
}
|
|
}
|
|
else
|
|
goto usage;
|
|
}
|
|
|
|
mbedtls_x509write_csr_set_md_alg( &req, opt.md_alg );
|
|
|
|
if( opt.key_usage || opt.force_key_usage == 1 )
|
|
mbedtls_x509write_csr_set_key_usage( &req, opt.key_usage );
|
|
|
|
if( opt.ns_cert_type || opt.force_ns_cert_type == 1 )
|
|
mbedtls_x509write_csr_set_ns_cert_type( &req, opt.ns_cert_type );
|
|
|
|
/*
|
|
* 0. Seed the PRNG
|
|
*/
|
|
mbedtls_printf( " . Seeding the random number generator..." );
|
|
fflush( stdout );
|
|
|
|
mbedtls_entropy_init( &entropy );
|
|
if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
|
|
(const unsigned char *) pers,
|
|
strlen( pers ) ) ) != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.0. Check the subject name for validity
|
|
*/
|
|
mbedtls_printf( " . Checking subject name..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = mbedtls_x509write_csr_set_subject_name( &req, opt.subject_name ) ) != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_x509write_csr_set_subject_name returned %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.1. Load the key
|
|
*/
|
|
mbedtls_printf( " . Loading the private key ..." );
|
|
fflush( stdout );
|
|
|
|
ret = mbedtls_pk_parse_keyfile( &key, opt.filename, opt.password,
|
|
mbedtls_ctr_drbg_random, &ctr_drbg );
|
|
|
|
if( ret != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile returned %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_x509write_csr_set_key( &req, &key );
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.2. Writing the request
|
|
*/
|
|
mbedtls_printf( " . Writing the certificate request ..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = write_certificate_request( &req, opt.output_file,
|
|
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! write_certifcate_request %d", ret );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
exit_code = MBEDTLS_EXIT_SUCCESS;
|
|
|
|
exit:
|
|
|
|
if( exit_code != MBEDTLS_EXIT_SUCCESS )
|
|
{
|
|
#ifdef MBEDTLS_ERROR_C
|
|
mbedtls_strerror( ret, buf, sizeof( buf ) );
|
|
mbedtls_printf( " - %s\n", buf );
|
|
#else
|
|
mbedtls_printf("\n");
|
|
#endif
|
|
}
|
|
|
|
mbedtls_x509write_csr_free( &req );
|
|
mbedtls_pk_free( &key );
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
|
mbedtls_entropy_free( &entropy );
|
|
|
|
#if defined(_WIN32)
|
|
mbedtls_printf( " + Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
mbedtls_exit( exit_code );
|
|
}
|
|
#endif /* MBEDTLS_X509_CSR_WRITE_C && MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO &&
|
|
MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_PEM_WRITE_C */
|