98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* Neither the name of ARM nor the names of its contributors may be used
|
|
* to endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef EXT_H_
|
|
#define EXT_H_
|
|
|
|
#include "key.h"
|
|
#include <openssl/x509v3.h>
|
|
|
|
/* Extension types supported */
|
|
enum {
|
|
EXT_TYPE_NVCOUNTER,
|
|
EXT_TYPE_PKEY,
|
|
EXT_TYPE_HASH
|
|
};
|
|
|
|
/*
|
|
* This structure contains the relevant information to create the extensions
|
|
* to be included in the certificates. This extensions will be used to
|
|
* establish the chain of trust.
|
|
*/
|
|
typedef struct ext_s {
|
|
const char *oid; /* OID of the extension */
|
|
const char *sn; /* Short name */
|
|
const char *ln; /* Long description */
|
|
int asn1_type; /* OpenSSL ASN1 type of the extension data.
|
|
* Supported types are:
|
|
* - V_ASN1_INTEGER
|
|
* - V_ASN1_OCTET_STRING
|
|
*/
|
|
int type;
|
|
/* Extension data (depends on extension type) */
|
|
union {
|
|
const char *fn; /* File with extension data */
|
|
int nvcounter; /* Non volatile counter */
|
|
int key; /* Public key */
|
|
} data;
|
|
|
|
int alias; /* In case OpenSSL provides an standard
|
|
* extension of the same type, add the new
|
|
* extension as an alias of this one
|
|
*/
|
|
|
|
X509V3_EXT_METHOD method; /* This field may be used to define a custom
|
|
* function to print the contents of the
|
|
* extension */
|
|
} ext_t;
|
|
|
|
enum {
|
|
EXT_NON_CRIT = 0,
|
|
EXT_CRIT = !EXT_NON_CRIT,
|
|
};
|
|
|
|
/* Exported API */
|
|
int ext_register(ext_t *tbb_ext);
|
|
X509_EXTENSION *ext_new_hash(int nid, int crit, const EVP_MD *md,
|
|
unsigned char *buf, size_t len);
|
|
X509_EXTENSION *ext_new_nvcounter(int nid, int crit, int value);
|
|
X509_EXTENSION *ext_new_key(int nid, int crit, EVP_PKEY *k);
|
|
|
|
/* Macro to register the extensions used in the CoT */
|
|
#define REGISTER_EXTENSIONS(_ext) \
|
|
ext_t *extensions = &_ext[0]; \
|
|
const unsigned int num_extensions = sizeof(_ext)/sizeof(_ext[0]);
|
|
|
|
/* Exported variables */
|
|
extern ext_t *extensions;
|
|
extern const unsigned int num_extensions;
|
|
|
|
#endif /* EXT_H_ */
|