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Ability to selfsign certificates added to cert_write app

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This commit is contained in:
Paul Bakker 2013-09-09 16:24:18 +02:00
parent 4122f3eacf
commit b2d7f23592
1 changed files with 79 additions and 64 deletions
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143
programs/x509/cert_write.c
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@ -67,6 +67,7 @@ int main( int argc, char *argv[] )
#define DFL_NOT_BEFORE "20010101000000"
#define DFL_NOT_AFTER "20301231235959"
#define DFL_SERIAL "1"
#define DFL_SELFSIGN 0
#define DFL_IS_CA 0
#define DFL_MAX_PATHLEN -1
#define DFL_KEY_USAGE 0
@ -89,6 +90,7 @@ struct options
char *not_before; /* validity period not before */
char *not_after; /* validity period not after */
char *serial; /* serial number string */
int selfsign; /* selfsign the certificate */
int is_ca; /* is a CA certificate */
int max_pathlen; /* maximum CA path length */
unsigned char key_usage; /* key usage flags */
@ -127,14 +129,20 @@ int write_certificate( x509write_cert *crt, char *output_file )
" subject_pwd and subject_name are ignored!\n" \
" subject_key=%%s default: subject.key\n" \
" subject_pwd=%%s default: (empty)\n" \
" subject_name=%%s default: CN=Cert,O=PolarSSL,C=NL\n" \
"\n" \
" issuer_crt=%%s default: (empty)\n" \
" If issuer_crt is specified, issuer_name is\n" \
" ignored!\n" \
" issuer_name=%%s default: CN=CA,O=PolarSSL,C=NL\n" \
"\n" \
" selfsign=%%d default: 0 (false)\n" \
" If selfsign is enabled, issuer_name and\n" \
" issuer_key are required (issuer_crt and\n" \
" subject_* are ignored\n" \
" issuer_key=%%s default: ca.key\n" \
" issuer_pwd=%%s default: (empty)\n" \
" output_file=%%s default: cert.crt\n" \
" subject_name=%%s default: CN=Cert,O=PolarSSL,C=NL\n" \
" issuer_name=%%s default: CN=CA,O=PolarSSL,C=NL\n" \
" serial=%%s default: 1\n" \
" not_before=%%s default: 20010101000000\n"\
" not_after=%%s default: 20301231235959\n"\
@ -164,7 +172,9 @@ int main( int argc, char *argv[] )
{
int ret = 0;
x509_cert issuer_crt;
rsa_context issuer_rsa, subject_rsa;
rsa_context loaded_issuer_rsa, loaded_subject_rsa;
rsa_context *issuer_rsa = &loaded_issuer_rsa,
*subject_rsa = &loaded_subject_rsa;
char buf[1024];
char issuer_name[128];
char subject_name[128];
@ -179,8 +189,8 @@ int main( int argc, char *argv[] )
*/
x509write_crt_init( &crt );
x509write_crt_set_md_alg( &crt, POLARSSL_MD_SHA1 );
rsa_init( &issuer_rsa, RSA_PKCS_V15, 0 );
rsa_init( &subject_rsa, RSA_PKCS_V15, 0 );
rsa_init( &loaded_issuer_rsa, RSA_PKCS_V15, 0 );
rsa_init( &loaded_subject_rsa, RSA_PKCS_V15, 0 );
mpi_init( &serial );
memset( &csr, 0, sizeof(x509_csr) );
memset( &issuer_crt, 0, sizeof(x509_cert) );
@ -207,6 +217,7 @@ int main( int argc, char *argv[] )
opt.not_before = DFL_NOT_BEFORE;
opt.not_after = DFL_NOT_AFTER;
opt.serial = DFL_SERIAL;
opt.selfsign = DFL_SELFSIGN;
opt.is_ca = DFL_IS_CA;
opt.max_pathlen = DFL_MAX_PATHLEN;
opt.key_usage = DFL_KEY_USAGE;
@ -261,6 +272,12 @@ int main( int argc, char *argv[] )
{
opt.serial = q;
}
else if( strcmp( p, "selfsign" ) == 0 )
{
opt.selfsign = atoi( q );
if( opt.selfsign < 0 || opt.selfsign > 1 )
goto usage;
}
else if( strcmp( p, "is_ca" ) == 0 )
{
opt.is_ca = atoi( q );
@ -344,7 +361,7 @@ int main( int argc, char *argv[] )
// Parse issuer certificate if present
//
if( strlen( opt.issuer_crt ) )
if( !opt.selfsign && strlen( opt.issuer_crt ) )
{
/*
* 1.0.a. Load the certificates
@ -375,7 +392,7 @@ int main( int argc, char *argv[] )
// Parse certificate request if present
//
if( strlen( opt.request_file ) )
if( !opt.selfsign && strlen( opt.request_file ) )
{
/*
* 1.0.b. Load the CSR
@ -400,17 +417,68 @@ int main( int argc, char *argv[] )
}
opt.subject_name = subject_name;
subject_rsa = pk_rsa( csr.pk );
if( ( ret = rsa_copy( &subject_rsa, pk_rsa( csr.pk ) ) ) != 0 )
printf( " ok\n" );
}
/*
* 1.1. Load the keys
*/
if( !opt.selfsign && !strlen( opt.request_file ) )
{
printf( " . Loading the subject key ..." );
fflush( stdout );
ret = x509parse_keyfile_rsa( &loaded_subject_rsa, opt.subject_key,
opt.subject_pwd );
if( ret != 0 )
{
error_strerror( ret, buf, 1024 );
printf( " failed\n ! rsa_copy returned -0x%02x - %s\n\n", -ret, buf );
printf( " failed\n ! x509parse_keyfile_rsa returned -0x%02x - %s\n\n", -ret, buf );
goto exit;
}
printf( " ok\n" );
}
printf( " . Loading the issuer key ..." );
fflush( stdout );
ret = x509parse_keyfile_rsa( &loaded_issuer_rsa, opt.issuer_key,
opt.issuer_pwd );
if( ret != 0 )
{
error_strerror( ret, buf, 1024 );
printf( " failed\n ! x509parse_keyfile_rsa returned -x%02x - %s\n\n", -ret, buf );
goto exit;
}
// Check if key and issuer certificate match
//
if( strlen( opt.issuer_crt ) )
{
if( !pk_can_do( &issuer_crt.pk, POLARSSL_PK_RSA ) ||
mpi_cmp_mpi( &pk_rsa( issuer_crt.pk )->N, &issuer_rsa->N ) != 0 ||
mpi_cmp_mpi( &pk_rsa( issuer_crt.pk )->E, &issuer_rsa->E ) != 0 )
{
printf( " failed\n ! issuer_key does not match issuer certificate\n\n" );
ret = -1;
goto exit;
}
}
printf( " ok\n" );
if( opt.selfsign )
{
opt.issuer_name = opt.subject_name;
subject_rsa = issuer_rsa;
}
x509write_crt_set_subject_key( &crt, subject_rsa );
x509write_crt_set_issuer_key( &crt, issuer_rsa );
/*
* 1.0. Check the names for validity
*/
@ -428,59 +496,6 @@ int main( int argc, char *argv[] )
goto exit;
}
/*
* 1.1. Load the keys
*/
if( !strlen( opt.request_file ) )
{
printf( " . Loading the subject key ..." );
fflush( stdout );
ret = x509parse_keyfile_rsa( &subject_rsa, opt.subject_key,
opt.subject_pwd );
if( ret != 0 )
{
error_strerror( ret, buf, 1024 );
printf( " failed\n ! x509parse_keyfile_rsa returned -0x%02x - %s\n\n", -ret, buf );
goto exit;
}
printf( " ok\n" );
}
x509write_crt_set_subject_key( &crt, &subject_rsa );
printf( " . Loading the issuer key ..." );
fflush( stdout );
ret = x509parse_keyfile_rsa( &issuer_rsa, opt.issuer_key, opt.issuer_pwd );
if( ret != 0 )
{
error_strerror( ret, buf, 1024 );
printf( " failed\n ! x509parse_keyfile_rsa returned -x%02x - %s\n\n", -ret, buf );
goto exit;
}
// Check if key and issuer certificate match
//
if( strlen( opt.issuer_crt ) )
{
if( !pk_can_do( &issuer_crt.pk, POLARSSL_PK_RSA ) ||
mpi_cmp_mpi( &pk_rsa( issuer_crt.pk )->N, &issuer_rsa.N ) != 0 ||
mpi_cmp_mpi( &pk_rsa( issuer_crt.pk )->E, &issuer_rsa.E ) != 0 )
{
printf( " failed\n ! issuer_key does not match issuer certificate\n\n" );
ret = -1;
goto exit;
}
}
x509write_crt_set_issuer_key( &crt, &issuer_rsa );
printf( " ok\n" );
printf( " . Setting certificate values ..." );
fflush( stdout );
@ -591,8 +606,8 @@ int main( int argc, char *argv[] )
exit:
x509write_crt_free( &crt );
rsa_free( &subject_rsa );
rsa_free( &issuer_rsa );
rsa_free( &loaded_subject_rsa );
rsa_free( &loaded_issuer_rsa );
mpi_free( &serial );
#if defined(_WIN32)