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629 lines
20 KiB
C
629 lines
20 KiB
C
/**
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* \file oid.c
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*
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* \brief Object Identifier (OID) database
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*
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* Copyright (C) 2006-2013, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "polarssl/config.h"
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#if defined(POLARSSL_OID_C)
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#include "polarssl/oid.h"
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#include "polarssl/rsa.h"
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#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
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#include "polarssl/x509.h"
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#endif
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#include <stdio.h>
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/*
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* Macro to automatically add the size of #define'd OIDs
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*/
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#define ADD_LEN(s) s, OID_SIZE(s)
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/*
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* Macro to generate an internal function for oid_XXX_from_asn1() (used by
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* the other functions)
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*/
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#define FN_OID_TYPED_FROM_ASN1( TYPE_T, NAME, LIST ) \
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static const TYPE_T * oid_ ## NAME ## _from_asn1( const asn1_buf *oid ) \
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{ return (const TYPE_T *) oid_descriptor_from_buf(LIST, sizeof(TYPE_T), oid->p, oid->len ); }
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/*
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* Macro to generate a function for retrieving a single attribute from the
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* descriptor of an oid_descriptor_t wrapper.
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*/
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#define FN_OID_GET_DESCRIPTOR_ATTR1(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1) \
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int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1 ) \
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{ \
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const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
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if( data == NULL ) return ( POLARSSL_ERR_OID_NOT_FOUND ); \
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*ATTR1 = data->descriptor.ATTR1; \
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return( 0 ); \
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}
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/*
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* Macro to generate a function for retrieving a single attribute from an
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* oid_descriptor_t wrapper.
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*/
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#define FN_OID_GET_ATTR1(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1) \
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int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1 ) \
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{ \
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const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
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if( data == NULL ) return ( POLARSSL_ERR_OID_NOT_FOUND ); \
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*ATTR1 = data->ATTR1; \
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return( 0 ); \
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}
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/*
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* Macro to generate a function for retrieving two attributes from an
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* oid_descriptor_t wrapper.
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*/
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#define FN_OID_GET_ATTR2(FN_NAME, TYPE_T, TYPE_NAME, ATTR1_TYPE, ATTR1, \
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ATTR2_TYPE, ATTR2) \
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int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1, ATTR2_TYPE * ATTR2 ) \
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{ \
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const TYPE_T *data = oid_ ## TYPE_NAME ## _from_asn1( oid ); \
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if( data == NULL ) return ( POLARSSL_ERR_OID_NOT_FOUND ); \
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*ATTR1 = data->ATTR1; \
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*ATTR2 = data->ATTR2; \
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return( 0 ); \
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}
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/*
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* Macro to generate a function for retrieving the OID based on a single
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* attribute from a oid_descriptor_t wrapper.
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*/
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#define FN_OID_GET_OID_BY_ATTR1(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1) \
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int FN_NAME( ATTR1_TYPE ATTR1, const char **oid, size_t *olen ) \
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{ \
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const TYPE_T *cur = LIST; \
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while( cur->descriptor.asn1 != NULL ) { \
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if( cur->ATTR1 == ATTR1 ) { \
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*oid = cur->descriptor.asn1; \
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*olen = cur->descriptor.asn1_len; \
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return( 0 ); \
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} \
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cur++; \
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} \
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return( POLARSSL_ERR_OID_NOT_FOUND ); \
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}
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/*
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* Macro to generate a function for retrieving the OID based on two
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* attributes from a oid_descriptor_t wrapper.
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*/
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#define FN_OID_GET_OID_BY_ATTR2(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1, \
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ATTR2_TYPE, ATTR2) \
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int FN_NAME( ATTR1_TYPE ATTR1, ATTR2_TYPE ATTR2, const char **oid , \
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size_t *olen ) \
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{ \
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const TYPE_T *cur = LIST; \
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while( cur->descriptor.asn1 != NULL ) { \
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if( cur->ATTR1 == ATTR1 && cur->ATTR2 == ATTR2 ) { \
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*oid = cur->descriptor.asn1; \
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*olen = cur->descriptor.asn1_len; \
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return( 0 ); \
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} \
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cur++; \
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} \
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return( POLARSSL_ERR_OID_NOT_FOUND ); \
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}
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/*
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* Core generic function
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*/
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static const oid_descriptor_t *oid_descriptor_from_buf( const void *struct_set,
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size_t struct_size, const unsigned char *oid, size_t len )
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{
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const unsigned char *p = (const unsigned char *) struct_set;
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const oid_descriptor_t *cur;
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if( struct_set == NULL || oid == NULL )
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return( NULL );
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cur = (const oid_descriptor_t *) p;
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while( cur->asn1 != NULL )
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{
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if( cur->asn1_len == len &&
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memcmp( cur->asn1, oid, len ) == 0 )
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{
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return( cur );
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}
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p += struct_size;
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cur = (const oid_descriptor_t *) p;
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}
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return( NULL );
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}
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/*
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* For X520 attribute types
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*/
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typedef struct {
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oid_descriptor_t descriptor;
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const char *short_name;
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} oid_x520_attr_t;
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static const oid_x520_attr_t oid_x520_attr_type[] =
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{
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{
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{ ADD_LEN( OID_AT_CN ), "id-at-commonName", "Common Name" },
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"CN",
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},
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{
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{ ADD_LEN( OID_AT_COUNTRY ), "id-at-countryName", "Country" },
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"C",
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},
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{
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{ ADD_LEN( OID_AT_LOCALITY ), "id-at-locality", "Locality" },
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"L",
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},
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{
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{ ADD_LEN( OID_AT_STATE ), "id-at-state", "State" },
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"ST",
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},
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{
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{ ADD_LEN( OID_AT_ORGANIZATION ),"id-at-organizationName", "Organization" },
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"O",
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},
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{
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{ ADD_LEN( OID_AT_ORG_UNIT ), "id-at-organizationalUnitName", "Org Unit" },
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"OU",
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},
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{
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{ ADD_LEN( OID_PKCS9_EMAIL ), "emailAddress", "E-mail address" },
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"emailAddress",
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},
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{
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{ NULL, 0, NULL, NULL },
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NULL,
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}
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};
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FN_OID_TYPED_FROM_ASN1(oid_x520_attr_t, x520_attr, oid_x520_attr_type);
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FN_OID_GET_ATTR1(oid_get_attr_short_name, oid_x520_attr_t, x520_attr, const char *, short_name);
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#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
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/*
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* For X509 extensions
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*/
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typedef struct {
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oid_descriptor_t descriptor;
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int ext_type;
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} oid_x509_ext_t;
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static const oid_x509_ext_t oid_x509_ext[] =
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{
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{
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{ ADD_LEN( OID_BASIC_CONSTRAINTS ), "id-ce-basicConstraints", "Basic Constraints" },
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EXT_BASIC_CONSTRAINTS,
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},
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{
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{ ADD_LEN( OID_KEY_USAGE ), "id-ce-keyUsage", "Key Usage" },
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EXT_KEY_USAGE,
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},
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{
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{ ADD_LEN( OID_EXTENDED_KEY_USAGE ), "id-ce-keyUsage", "Extended Key Usage" },
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EXT_EXTENDED_KEY_USAGE,
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},
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{
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{ ADD_LEN( OID_SUBJECT_ALT_NAME ), "id-ce-subjectAltName", "Subject Alt Name" },
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EXT_SUBJECT_ALT_NAME,
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},
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{
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{ ADD_LEN( OID_NS_CERT_TYPE ), "id-netscape-certtype", "Netscape Certificate Type" },
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EXT_NS_CERT_TYPE,
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},
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{
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{ NULL, 0, NULL, NULL },
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0,
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},
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};
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FN_OID_TYPED_FROM_ASN1(oid_x509_ext_t, x509_ext, oid_x509_ext);
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FN_OID_GET_ATTR1(oid_get_x509_ext_type, oid_x509_ext_t, x509_ext, int, ext_type);
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static const oid_descriptor_t oid_ext_key_usage[] =
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{
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{ ADD_LEN( OID_SERVER_AUTH ), "id-kp-serverAuth", "TLS Web Server Authentication" },
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{ ADD_LEN( OID_CLIENT_AUTH ), "id-kp-clientAuth", "TLS Web Client Authentication" },
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{ ADD_LEN( OID_CODE_SIGNING ), "id-kp-codeSigning", "Code Signing" },
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{ ADD_LEN( OID_EMAIL_PROTECTION ), "id-kp-emailProtection", "E-mail Protection" },
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{ ADD_LEN( OID_TIME_STAMPING ), "id-kp-timeStamping", "Time Stamping" },
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{ ADD_LEN( OID_OCSP_SIGNING ), "id-kp-OCSPSigning", "OCSP Signing" },
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{ NULL, 0, NULL, NULL },
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};
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FN_OID_TYPED_FROM_ASN1(oid_descriptor_t, ext_key_usage, oid_ext_key_usage);
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FN_OID_GET_ATTR1(oid_get_extended_key_usage, oid_descriptor_t, ext_key_usage, const char *, description);
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#endif /* POLARSSL_X509_USE_C || POLARSSL_X509_CREATE_C */
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#if defined(POLARSSL_MD_C)
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/*
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* For SignatureAlgorithmIdentifier
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*/
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typedef struct {
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oid_descriptor_t descriptor;
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md_type_t md_alg;
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pk_type_t pk_alg;
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} oid_sig_alg_t;
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static const oid_sig_alg_t oid_sig_alg[] =
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{
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{
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{ ADD_LEN( OID_PKCS1_MD2 ), "md2WithRSAEncryption", "RSA with MD2" },
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POLARSSL_MD_MD2, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_MD4 ), "md4WithRSAEncryption", "RSA with MD4" },
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POLARSSL_MD_MD4, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_MD5 ), "md5WithRSAEncryption", "RSA with MD5" },
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POLARSSL_MD_MD5, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_SHA1 ), "sha-1WithRSAEncryption", "RSA with SHA1" },
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POLARSSL_MD_SHA1, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_SHA224 ), "sha224WithRSAEncryption", "RSA with SHA-224" },
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POLARSSL_MD_SHA224, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_SHA256 ), "sha256WithRSAEncryption", "RSA with SHA-256" },
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POLARSSL_MD_SHA256, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_SHA384 ), "sha384WithRSAEncryption", "RSA with SHA-384" },
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POLARSSL_MD_SHA384, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_PKCS1_SHA512 ), "sha512WithRSAEncryption", "RSA with SHA-512" },
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POLARSSL_MD_SHA512, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_RSA_SHA_OBS ), "sha-1WithRSAEncryption", "RSA with SHA1" },
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POLARSSL_MD_SHA1, POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_ECDSA_SHA1 ), "ecdsa-with-SHA1", "ECDSA with SHA1" },
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POLARSSL_MD_SHA1, POLARSSL_PK_ECDSA,
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},
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{
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{ ADD_LEN( OID_ECDSA_SHA224 ), "ecdsa-with-SHA224", "ECDSA with SHA224" },
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POLARSSL_MD_SHA224, POLARSSL_PK_ECDSA,
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},
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{
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{ ADD_LEN( OID_ECDSA_SHA256 ), "ecdsa-with-SHA256", "ECDSA with SHA256" },
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POLARSSL_MD_SHA256, POLARSSL_PK_ECDSA,
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},
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{
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{ ADD_LEN( OID_ECDSA_SHA384 ), "ecdsa-with-SHA384", "ECDSA with SHA384" },
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POLARSSL_MD_SHA384, POLARSSL_PK_ECDSA,
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},
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{
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{ ADD_LEN( OID_ECDSA_SHA512 ), "ecdsa-with-SHA512", "ECDSA with SHA512" },
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POLARSSL_MD_SHA512, POLARSSL_PK_ECDSA,
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},
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{
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{ NULL, 0, NULL, NULL },
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0, 0,
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},
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};
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FN_OID_TYPED_FROM_ASN1(oid_sig_alg_t, sig_alg, oid_sig_alg);
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FN_OID_GET_DESCRIPTOR_ATTR1(oid_get_sig_alg_desc, oid_sig_alg_t, sig_alg, const char *, description);
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FN_OID_GET_ATTR2(oid_get_sig_alg, oid_sig_alg_t, sig_alg, md_type_t, md_alg, pk_type_t, pk_alg);
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FN_OID_GET_OID_BY_ATTR2(oid_get_oid_by_sig_alg, oid_sig_alg_t, oid_sig_alg, pk_type_t, pk_alg, md_type_t, md_alg);
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#endif /* POLARSSL_MD_C */
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/*
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* For PublicKeyInfo (PKCS1, RFC 5480)
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*/
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typedef struct {
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oid_descriptor_t descriptor;
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pk_type_t pk_alg;
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} oid_pk_alg_t;
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static const oid_pk_alg_t oid_pk_alg[] =
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{
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{
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{ ADD_LEN( OID_PKCS1_RSA ), "rsaEncryption", "RSA" },
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POLARSSL_PK_RSA,
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},
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{
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{ ADD_LEN( OID_EC_ALG_UNRESTRICTED ), "id-ecPublicKey", "Generic EC key" },
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POLARSSL_PK_ECKEY,
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},
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{
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{ ADD_LEN( OID_EC_ALG_ECDH ), "id-ecDH", "EC key for ECDH" },
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POLARSSL_PK_ECKEY_DH,
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},
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{
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{ NULL, 0, NULL, NULL },
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0,
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},
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};
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FN_OID_TYPED_FROM_ASN1(oid_pk_alg_t, pk_alg, oid_pk_alg);
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FN_OID_GET_ATTR1(oid_get_pk_alg, oid_pk_alg_t, pk_alg, pk_type_t, pk_alg);
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FN_OID_GET_OID_BY_ATTR1(oid_get_oid_by_pk_alg, oid_pk_alg_t, oid_pk_alg, pk_type_t, pk_alg);
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#if defined(POLARSSL_ECP_C)
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/*
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* For namedCurve (RFC 5480)
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*/
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typedef struct {
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oid_descriptor_t descriptor;
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ecp_group_id grp_id;
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} oid_ecp_grp_t;
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static const oid_ecp_grp_t oid_ecp_grp[] =
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{
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{
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{ ADD_LEN( OID_EC_GRP_SECP192R1 ), "secp192r1", "secp192r1" },
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POLARSSL_ECP_DP_SECP192R1,
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},
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{
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{ ADD_LEN( OID_EC_GRP_SECP224R1 ), "secp224r1", "secp224r1" },
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POLARSSL_ECP_DP_SECP224R1,
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},
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{
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{ ADD_LEN( OID_EC_GRP_SECP256R1 ), "secp256r1", "secp256r1" },
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POLARSSL_ECP_DP_SECP256R1,
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},
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{
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{ ADD_LEN( OID_EC_GRP_SECP384R1 ), "secp384r1", "secp384r1" },
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POLARSSL_ECP_DP_SECP384R1,
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},
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{
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{ ADD_LEN( OID_EC_GRP_SECP521R1 ), "secp521r1", "secp521r1" },
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POLARSSL_ECP_DP_SECP521R1,
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},
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{
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{ NULL, 0, NULL, NULL },
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0,
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},
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};
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FN_OID_TYPED_FROM_ASN1(oid_ecp_grp_t, grp_id, oid_ecp_grp);
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FN_OID_GET_ATTR1(oid_get_ec_grp, oid_ecp_grp_t, grp_id, ecp_group_id, grp_id);
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FN_OID_GET_OID_BY_ATTR1(oid_get_oid_by_ec_grp, oid_ecp_grp_t, oid_ecp_grp, ecp_group_id, grp_id);
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#endif /* POLARSSL_ECP_C */
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#if defined(POLARSSL_CIPHER_C)
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/*
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* For PKCS#5 PBES2 encryption algorithm
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*/
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typedef struct {
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oid_descriptor_t descriptor;
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cipher_type_t cipher_alg;
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} oid_cipher_alg_t;
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static const oid_cipher_alg_t oid_cipher_alg[] =
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{
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{
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{ ADD_LEN( OID_DES_CBC ), "desCBC", "DES-CBC" },
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POLARSSL_CIPHER_DES_CBC,
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},
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{
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{ ADD_LEN( OID_DES_EDE3_CBC ), "des-ede3-cbc", "DES-EDE3-CBC" },
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POLARSSL_CIPHER_DES_EDE3_CBC,
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},
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{
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{ NULL, 0, NULL, NULL },
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0,
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},
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};
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FN_OID_TYPED_FROM_ASN1(oid_cipher_alg_t, cipher_alg, oid_cipher_alg);
|
|
FN_OID_GET_ATTR1(oid_get_cipher_alg, oid_cipher_alg_t, cipher_alg, cipher_type_t, cipher_alg);
|
|
#endif /* POLARSSL_CIPHER_C */
|
|
|
|
#if defined(POLARSSL_MD_C)
|
|
/*
|
|
* For digestAlgorithm
|
|
*/
|
|
typedef struct {
|
|
oid_descriptor_t descriptor;
|
|
md_type_t md_alg;
|
|
} oid_md_alg_t;
|
|
|
|
static const oid_md_alg_t oid_md_alg[] =
|
|
{
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_MD2 ), "id-md2", "MD2" },
|
|
POLARSSL_MD_MD2,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_MD4 ), "id-md4", "MD4" },
|
|
POLARSSL_MD_MD4,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_MD5 ), "id-md5", "MD5" },
|
|
POLARSSL_MD_MD5,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_SHA1 ), "id-sha1", "SHA-1" },
|
|
POLARSSL_MD_SHA1,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_SHA1 ), "id-sha1", "SHA-1" },
|
|
POLARSSL_MD_SHA1,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_SHA224 ), "id-sha224", "SHA-224" },
|
|
POLARSSL_MD_SHA224,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_SHA256 ), "id-sha256", "SHA-256" },
|
|
POLARSSL_MD_SHA256,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_SHA384 ), "id-sha384", "SHA-384" },
|
|
POLARSSL_MD_SHA384,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_DIGEST_ALG_SHA512 ), "id-sha512", "SHA-512" },
|
|
POLARSSL_MD_SHA512,
|
|
},
|
|
{
|
|
{ NULL, 0, NULL, NULL },
|
|
0,
|
|
},
|
|
};
|
|
|
|
FN_OID_TYPED_FROM_ASN1(oid_md_alg_t, md_alg, oid_md_alg);
|
|
FN_OID_GET_ATTR1(oid_get_md_alg, oid_md_alg_t, md_alg, md_type_t, md_alg);
|
|
FN_OID_GET_OID_BY_ATTR1(oid_get_oid_by_md, oid_md_alg_t, oid_md_alg, md_type_t, md_alg);
|
|
#endif /* POLARSSL_MD_C */
|
|
|
|
#if defined(POLARSSL_PKCS12_C)
|
|
/*
|
|
* For PKCS#12 PBEs
|
|
*/
|
|
typedef struct {
|
|
oid_descriptor_t descriptor;
|
|
md_type_t md_alg;
|
|
cipher_type_t cipher_alg;
|
|
} oid_pkcs12_pbe_alg_t;
|
|
|
|
static const oid_pkcs12_pbe_alg_t oid_pkcs12_pbe_alg[] =
|
|
{
|
|
{
|
|
{ ADD_LEN( OID_PKCS12_PBE_SHA1_DES3_EDE_CBC ), "pbeWithSHAAnd3-KeyTripleDES-CBC", "PBE with SHA1 and 3-Key 3DES" },
|
|
POLARSSL_MD_SHA1, POLARSSL_CIPHER_DES_EDE3_CBC,
|
|
},
|
|
{
|
|
{ ADD_LEN( OID_PKCS12_PBE_SHA1_DES2_EDE_CBC ), "pbeWithSHAAnd2-KeyTripleDES-CBC", "PBE with SHA1 and 2-Key 3DES" },
|
|
POLARSSL_MD_SHA1, POLARSSL_CIPHER_DES_EDE_CBC,
|
|
},
|
|
{
|
|
{ NULL, 0, NULL, NULL },
|
|
0, 0,
|
|
},
|
|
};
|
|
|
|
FN_OID_TYPED_FROM_ASN1(oid_pkcs12_pbe_alg_t, pkcs12_pbe_alg, oid_pkcs12_pbe_alg);
|
|
FN_OID_GET_ATTR2(oid_get_pkcs12_pbe_alg, oid_pkcs12_pbe_alg_t, pkcs12_pbe_alg, md_type_t, md_alg, cipher_type_t, cipher_alg);
|
|
#endif /* POLARSSL_PKCS12_C */
|
|
|
|
#if defined _MSC_VER && !defined snprintf
|
|
#include <stdarg.h>
|
|
|
|
#if !defined vsnprintf
|
|
#define vsnprintf _vsnprintf
|
|
#endif // vsnprintf
|
|
|
|
/*
|
|
* Windows _snprintf and _vsnprintf are not compatible to linux versions.
|
|
* Result value is not size of buffer needed, but -1 if no fit is possible.
|
|
*
|
|
* This fuction tries to 'fix' this by at least suggesting enlarging the
|
|
* size by 20.
|
|
*/
|
|
static int compat_snprintf(char *str, size_t size, const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
int res = -1;
|
|
|
|
va_start( ap, format );
|
|
|
|
res = vsnprintf( str, size, format, ap );
|
|
|
|
va_end( ap );
|
|
|
|
// No quick fix possible
|
|
if ( res < 0 )
|
|
return( (int) size + 20 );
|
|
|
|
return res;
|
|
}
|
|
|
|
#define snprintf compat_snprintf
|
|
#endif
|
|
|
|
#define POLARSSL_ERR_DEBUG_BUF_TOO_SMALL -2
|
|
|
|
#define SAFE_SNPRINTF() \
|
|
{ \
|
|
if( ret == -1 ) \
|
|
return( -1 ); \
|
|
\
|
|
if ( (unsigned int) ret > n ) { \
|
|
p[n - 1] = '\0'; \
|
|
return POLARSSL_ERR_DEBUG_BUF_TOO_SMALL;\
|
|
} \
|
|
\
|
|
n -= (unsigned int) ret; \
|
|
p += (unsigned int) ret; \
|
|
}
|
|
|
|
/* Return the x.y.z.... style numeric string for the given OID */
|
|
int oid_get_numeric_string( char *buf, size_t size,
|
|
const asn1_buf *oid )
|
|
{
|
|
int ret;
|
|
size_t i, n;
|
|
unsigned int value;
|
|
char *p;
|
|
|
|
p = buf;
|
|
n = size;
|
|
|
|
/* First byte contains first two dots */
|
|
if( oid->len > 0 )
|
|
{
|
|
ret = snprintf( p, n, "%d.%d", oid->p[0] / 40, oid->p[0] % 40 );
|
|
SAFE_SNPRINTF();
|
|
}
|
|
|
|
value = 0;
|
|
for( i = 1; i < oid->len; i++ )
|
|
{
|
|
/* Prevent overflow in value. */
|
|
if ( ( ( value << 7 ) >> 7 ) != value )
|
|
return( POLARSSL_ERR_DEBUG_BUF_TOO_SMALL );
|
|
|
|
value <<= 7;
|
|
value += oid->p[i] & 0x7F;
|
|
|
|
if( !( oid->p[i] & 0x80 ) )
|
|
{
|
|
/* Last byte */
|
|
ret = snprintf( p, n, ".%d", value );
|
|
SAFE_SNPRINTF();
|
|
value = 0;
|
|
}
|
|
}
|
|
|
|
return( (int) ( size - n ) );
|
|
}
|
|
|
|
#endif /* POLARSSL_OID_C */
|