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Added support for writing Key Usage and NS Cert Type extensions

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This commit is contained in:
Paul Bakker 2013-09-09 12:37:54 +02:00
parent cd35803684
commit 52be08c299
3 changed files with 100 additions and 7 deletions
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23
include/polarssl/x509write.h
View file

@ -334,6 +334,29 @@ int x509write_crt_set_subject_key_identifier( x509write_cert *ctx );
*/
int x509write_crt_set_authority_key_identifier( x509write_cert *ctx );
/**
* \brief Set the Key Usage Extension flags
* (e.g. KU_DIGITAL_SIGNATURE | KU_KEY_CERT_SIGN)
*
* \param ctx CRT context to use
* \param key_usage key usage flags to set
*
* \return 0 if successful, or POLARSSL_ERR_X509WRITE_MALLOC_FAILED
*/
int x509write_crt_set_key_usage( x509write_cert *ctx, unsigned char key_usage );
/**
* \brief Set the Netscape Cert Type flags
* (e.g. NS_CERT_TYPE_SSL_CLIENT | NS_CERT_TYPE_EMAIL)
*
* \param ctx CRT context to use
* \param ns_cert_type Netscape Cert Type flags to set
*
* \return 0 if successful, or POLARSSL_ERR_X509WRITE_MALLOC_FAILED
*/
int x509write_crt_set_ns_cert_type( x509write_cert *ctx,
unsigned char ns_cert_type );
/**
* \brief Free the contents of a CRT write context
*

41
library/x509write.c
View file

@ -389,6 +389,47 @@ int x509write_crt_set_authority_key_identifier( x509write_cert *ctx )
0, buf + sizeof(buf) - len, len );
}
int x509write_crt_set_key_usage( x509write_cert *ctx, unsigned char key_usage )
{
unsigned char buf[4];
unsigned char *c;
int ret;
c = buf + 4;
if( ( ret = asn1_write_bitstring( &c, buf, &key_usage, 7 ) ) != 4 )
return( ret );
ret = x509write_crt_set_extension( ctx, OID_KEY_USAGE,
OID_SIZE( OID_KEY_USAGE ),
1, buf, 4 );
if( ret != 0 )
return( ret );
return( 0 );
}
int x509write_crt_set_ns_cert_type( x509write_cert *ctx,
unsigned char ns_cert_type )
{
unsigned char buf[4];
unsigned char *c;
int ret;
c = buf + 4;
if( ( ret = asn1_write_bitstring( &c, buf, &ns_cert_type, 8 ) ) != 4 )
return( ret );
ret = x509write_crt_set_extension( ctx, OID_NS_CERT_TYPE,
OID_SIZE( OID_NS_CERT_TYPE ),
0, buf, 4 );
if( ret != 0 )
return( ret );
return( 0 );
}
int x509write_pubkey_der( rsa_context *rsa, unsigned char *buf, size_t size )
{
int ret;

43
programs/x509/cert_write.c
View file

@ -317,13 +317,6 @@ int main( int argc, char *argv[] )
goto exit;
}
/*
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 );
*/
/*
* 1.0. Check the names for validity
*/
@ -455,6 +448,42 @@ int main( int argc, char *argv[] )
printf( " ok\n" );
if( opt.key_usage )
{
printf( " . Adding the Key Usage extension ..." );
fflush( stdout );
ret = x509write_crt_set_key_usage( &crt, opt.key_usage );
if( ret != 0 )
{
#ifdef POLARSSL_ERROR_C
error_strerror( ret, buf, 1024 );
#endif
printf( " failed\n ! x509write_crt_set_key_usage returned -0x%02x - %s\n\n", -ret, buf );
goto exit;
}
printf( " ok\n" );
}
if( opt.ns_cert_type )
{
printf( " . Adding the NS Cert Type extension ..." );
fflush( stdout );
ret = x509write_crt_set_ns_cert_type( &crt, opt.ns_cert_type );
if( ret != 0 )
{
#ifdef POLARSSL_ERROR_C
error_strerror( ret, buf, 1024 );
#endif
printf( " failed\n ! x509write_crt_set_ns_cert_type returned -0x%02x - %s\n\n", -ret, buf );
goto exit;
}
printf( " ok\n" );
}
/*
* 1.2. Writing the request
*/