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https://github.com/Telecominfraproject/OpenCellular.git
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96103d5af6
This patch adds non-volatile counter support to the Certificate Generation tool. The TBBR Chain of Trust definition in the tool has been extended to include the counters as certificate extensions. The counter values can be specified in the command line. The following default counter values are specified in the build system: * Trusted FW Non-Volatile counter = 0 * Non-Trusted FW Non-Volatile counter = 0 These values can be overridden by the platform at build time. Change-Id: I7ea10ee78d72748d181df4ee78a7169b3ef2720c
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef EXT_H_
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#define EXT_H_
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#include "key.h"
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#include <openssl/x509v3.h>
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/* Extension types supported */
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enum ext_type_e {
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EXT_TYPE_NVCOUNTER,
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EXT_TYPE_PKEY,
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EXT_TYPE_HASH
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};
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/* NV-Counter types */
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enum nvctr_type_e {
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NVCTR_TYPE_TFW,
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NVCTR_TYPE_NTFW
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};
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/*
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* This structure contains the relevant information to create the extensions
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* to be included in the certificates. This extensions will be used to
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* establish the chain of trust.
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*/
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typedef struct ext_s {
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const char *oid; /* OID of the extension */
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const char *sn; /* Short name */
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const char *ln; /* Long description */
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const char *opt; /* Command line option to specify data */
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const char *help_msg; /* Help message */
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const char *arg; /* Argument passed from command line */
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int asn1_type; /* OpenSSL ASN1 type of the extension data.
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* Supported types are:
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* - V_ASN1_INTEGER
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* - V_ASN1_OCTET_STRING
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*/
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int type; /* See ext_type_e */
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/* Extension attributes (depends on extension type) */
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union {
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int nvctr_type; /* See nvctr_type_e */
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int key; /* Index into array of registered public keys */
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} attr;
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int alias; /* In case OpenSSL provides an standard
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* extension of the same type, add the new
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* extension as an alias of this one
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*/
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X509V3_EXT_METHOD method; /* This field may be used to define a custom
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* function to print the contents of the
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* extension */
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int optional; /* This field may be used optionally to exclude an image */
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} ext_t;
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enum {
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EXT_NON_CRIT = 0,
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EXT_CRIT = !EXT_NON_CRIT,
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};
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/* Exported API */
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int ext_init(void);
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ext_t *ext_get_by_opt(const char *opt);
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X509_EXTENSION *ext_new_hash(int nid, int crit, const EVP_MD *md,
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unsigned char *buf, size_t len);
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X509_EXTENSION *ext_new_nvcounter(int nid, int crit, int value);
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X509_EXTENSION *ext_new_key(int nid, int crit, EVP_PKEY *k);
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/* Macro to register the extensions used in the CoT */
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#define REGISTER_EXTENSIONS(_ext) \
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ext_t *extensions = &_ext[0]; \
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const unsigned int num_extensions = sizeof(_ext)/sizeof(_ext[0])
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/* Exported variables */
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extern ext_t *extensions;
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extern const unsigned int num_extensions;
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#endif /* EXT_H_ */
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