mirror of
https://github.com/yuzu-emu/mbedtls
synced 2024-11-24 18:28:37 +00:00
277 lines
8.5 KiB
C
277 lines
8.5 KiB
C
/*
|
|
* X.509 base functions for creating certificates / CSRs
|
|
*
|
|
* Copyright (C) 2006-2013, 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.
|
|
*/
|
|
|
|
#include "polarssl/config.h"
|
|
|
|
#if defined(POLARSSL_X509_CREATE_C)
|
|
|
|
#include "polarssl/x509.h"
|
|
#include "polarssl/asn1write.h"
|
|
#include "polarssl/oid.h"
|
|
|
|
#if defined(_MSC_VER) && !defined strncasecmp
|
|
#define strncasecmp _strnicmp
|
|
#endif
|
|
|
|
int x509_string_to_names( asn1_named_data **head, const char *name )
|
|
{
|
|
int ret = 0;
|
|
const char *s = name, *c = s;
|
|
const char *end = s + strlen( s );
|
|
const char *oid = NULL;
|
|
int in_tag = 1;
|
|
asn1_named_data *cur;
|
|
|
|
/* Clear existing chain if present */
|
|
asn1_free_named_data_list( head );
|
|
|
|
while( c <= end )
|
|
{
|
|
if( in_tag && *c == '=' )
|
|
{
|
|
if( c - s == 2 && strncasecmp( s, "CN", 2 ) == 0 )
|
|
oid = OID_AT_CN;
|
|
else if( c - s == 1 && strncasecmp( s, "C", 1 ) == 0 )
|
|
oid = OID_AT_COUNTRY;
|
|
else if( c - s == 1 && strncasecmp( s, "O", 1 ) == 0 )
|
|
oid = OID_AT_ORGANIZATION;
|
|
else if( c - s == 1 && strncasecmp( s, "L", 1 ) == 0 )
|
|
oid = OID_AT_LOCALITY;
|
|
else if( c - s == 1 && strncasecmp( s, "R", 1 ) == 0 )
|
|
oid = OID_PKCS9_EMAIL;
|
|
else if( c - s == 2 && strncasecmp( s, "OU", 2 ) == 0 )
|
|
oid = OID_AT_ORG_UNIT;
|
|
else if( c - s == 2 && strncasecmp( s, "ST", 2 ) == 0 )
|
|
oid = OID_AT_STATE;
|
|
else if( c - s == 12 && strncasecmp( s, "serialNumber", 12 ) == 0 )
|
|
oid = OID_AT_SERIAL_NUMBER;
|
|
else if( c - s == 13 && strncasecmp( s, "postalAddress", 13 ) == 0 )
|
|
oid = OID_AT_POSTAL_ADDRESS;
|
|
else if( c - s == 10 && strncasecmp( s, "postalCode", 10 ) == 0 )
|
|
oid = OID_AT_POSTAL_CODE;
|
|
else
|
|
{
|
|
ret = POLARSSL_ERR_X509_UNKNOWN_OID;
|
|
goto exit;
|
|
}
|
|
|
|
s = c + 1;
|
|
in_tag = 0;
|
|
}
|
|
|
|
if( !in_tag && ( *c == ',' || c == end ) )
|
|
{
|
|
if( ( cur = asn1_store_named_data( head, oid, strlen( oid ),
|
|
(unsigned char *) s,
|
|
c - s ) ) == NULL )
|
|
{
|
|
return( POLARSSL_ERR_X509_MALLOC_FAILED );
|
|
}
|
|
|
|
while( c < end && *(c + 1) == ' ' )
|
|
c++;
|
|
|
|
s = c + 1;
|
|
in_tag = 1;
|
|
}
|
|
c++;
|
|
}
|
|
|
|
exit:
|
|
|
|
return( ret );
|
|
}
|
|
|
|
/* The first byte of the value in the asn1_named_data structure is reserved
|
|
* to store the critical boolean for us
|
|
*/
|
|
int x509_set_extension( asn1_named_data **head, const char *oid, size_t oid_len,
|
|
int critical, const unsigned char *val, size_t val_len )
|
|
{
|
|
asn1_named_data *cur;
|
|
|
|
if( ( cur = asn1_store_named_data( head, oid, oid_len,
|
|
NULL, val_len + 1 ) ) == NULL )
|
|
{
|
|
return( POLARSSL_ERR_X509_MALLOC_FAILED );
|
|
}
|
|
|
|
cur->val.p[0] = critical;
|
|
memcpy( cur->val.p + 1, val, val_len );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* RelativeDistinguishedName ::=
|
|
* SET OF AttributeTypeAndValue
|
|
*
|
|
* AttributeTypeAndValue ::= SEQUENCE {
|
|
* type AttributeType,
|
|
* value AttributeValue }
|
|
*
|
|
* AttributeType ::= OBJECT IDENTIFIER
|
|
*
|
|
* AttributeValue ::= ANY DEFINED BY AttributeType
|
|
*/
|
|
static int x509_write_name( unsigned char **p, unsigned char *start,
|
|
const char *oid, size_t oid_len,
|
|
const unsigned char *name, size_t name_len )
|
|
{
|
|
int ret;
|
|
size_t len = 0;
|
|
|
|
// Write PrintableString for all except OID_PKCS9_EMAIL
|
|
//
|
|
if( OID_SIZE( OID_PKCS9_EMAIL ) == oid_len &&
|
|
memcmp( oid, OID_PKCS9_EMAIL, oid_len ) == 0 )
|
|
{
|
|
ASN1_CHK_ADD( len, asn1_write_ia5_string( p, start,
|
|
(const char *) name,
|
|
name_len ) );
|
|
}
|
|
else
|
|
{
|
|
ASN1_CHK_ADD( len, asn1_write_printable_string( p, start,
|
|
(const char *) name,
|
|
name_len ) );
|
|
}
|
|
|
|
// Write OID
|
|
//
|
|
ASN1_CHK_ADD( len, asn1_write_oid( p, start, oid, oid_len ) );
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SET ) );
|
|
|
|
return( (int) len );
|
|
}
|
|
|
|
int x509_write_names( unsigned char **p, unsigned char *start,
|
|
asn1_named_data *first )
|
|
{
|
|
int ret;
|
|
size_t len = 0;
|
|
asn1_named_data *cur = first;
|
|
|
|
while( cur != NULL )
|
|
{
|
|
ASN1_CHK_ADD( len, x509_write_name( p, start, (char *) cur->oid.p,
|
|
cur->oid.len,
|
|
cur->val.p, cur->val.len ) );
|
|
cur = cur->next;
|
|
}
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
|
|
|
|
return( (int) len );
|
|
}
|
|
|
|
int x509_write_sig( unsigned char **p, unsigned char *start,
|
|
const char *oid, size_t oid_len,
|
|
unsigned char *sig, size_t size )
|
|
{
|
|
int ret;
|
|
size_t len = 0;
|
|
|
|
if( *p - start < (int) size + 1 )
|
|
return( POLARSSL_ERR_ASN1_BUF_TOO_SMALL );
|
|
|
|
len = size;
|
|
(*p) -= len;
|
|
memcpy( *p, sig, len );
|
|
|
|
*--(*p) = 0;
|
|
len += 1;
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_BIT_STRING ) );
|
|
|
|
// Write OID
|
|
//
|
|
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( p, start, oid,
|
|
oid_len, 0 ) );
|
|
|
|
return( (int) len );
|
|
}
|
|
|
|
static int x509_write_extension( unsigned char **p, unsigned char *start,
|
|
asn1_named_data *ext )
|
|
{
|
|
int ret;
|
|
size_t len = 0;
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start, ext->val.p + 1,
|
|
ext->val.len - 1 ) );
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, ext->val.len - 1 ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_OCTET_STRING ) );
|
|
|
|
if( ext->val.p[0] != 0 )
|
|
{
|
|
ASN1_CHK_ADD( len, asn1_write_bool( p, start, 1 ) );
|
|
}
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start, ext->oid.p,
|
|
ext->oid.len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, ext->oid.len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_OID ) );
|
|
|
|
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
|
|
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
|
|
|
|
return( (int) len );
|
|
}
|
|
|
|
/*
|
|
* Extension ::= SEQUENCE {
|
|
* extnID OBJECT IDENTIFIER,
|
|
* critical BOOLEAN DEFAULT FALSE,
|
|
* extnValue OCTET STRING
|
|
* -- contains the DER encoding of an ASN.1 value
|
|
* -- corresponding to the extension type identified
|
|
* -- by extnID
|
|
* }
|
|
*/
|
|
int x509_write_extensions( unsigned char **p, unsigned char *start,
|
|
asn1_named_data *first )
|
|
{
|
|
int ret;
|
|
size_t len = 0;
|
|
asn1_named_data *cur_ext = first;
|
|
|
|
while( cur_ext != NULL )
|
|
{
|
|
ASN1_CHK_ADD( len, x509_write_extension( p, start, cur_ext ) );
|
|
cur_ext = cur_ext->next;
|
|
}
|
|
|
|
return( (int) len );
|
|
}
|
|
|
|
#endif /* POLARSSL_X509_CREATE_C */
|