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/**
* \file oid.c
*
* \brief Object Identifier (OID) database
*
* 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_OID_C)
#include "polarssl/oid.h"
#include "polarssl/md.h"
#include "polarssl/rsa.h"
/*
* For X520 attribute types
*/
typedef struct {
oid_descriptor_t descriptor;
const char *short_name;
} oid_x520_attr_t;
static const oid_x520_attr_t oid_x520_attr_type[] =
{
{
{ OID_AT_CN, "id-at-commonName", "Common Name" },
"CN",
},
{
{ OID_AT_COUNTRY, "id-at-countryName", "Country" },
"C",
},
{
{ OID_AT_LOCALITY, "id-at-locality", "Locality" },
"L",
},
{
{ OID_AT_STATE, "id-at-state", "State" },
"ST",
},
{
{ OID_AT_ORGANIZATION,"id-at-organizationName", "Organization" },
"O",
},
{
{ OID_AT_ORG_UNIT, "id-at-organizationalUnitName", "Org Unit" },
"OU",
},
{
{ OID_PKCS9_EMAIL, "emailAddress", "E-mail address" },
"emailAddress",
},
{
{ NULL, NULL, NULL },
NULL,
}
};
/*
* For X509 extensions
*/
typedef struct {
oid_descriptor_t descriptor;
int ext_type;
} oid_x509_ext_t;
static const oid_x509_ext_t oid_x509_ext[] =
{
{
{ OID_BASIC_CONSTRAINTS, "id-ce-basicConstraints", "Basic Constraints" },
EXT_BASIC_CONSTRAINTS,
},
{
{ OID_KEY_USAGE, "id-ce-keyUsage", "Key Usage" },
EXT_KEY_USAGE,
},
{
{ OID_EXTENDED_KEY_USAGE, "id-ce-keyUsage", "Extended Key Usage" },
EXT_EXTENDED_KEY_USAGE,
},
{
{ OID_SUBJECT_ALT_NAME, "id-ce-subjectAltName", "Subject Alt Name" },
EXT_SUBJECT_ALT_NAME,
},
{
{ OID_NS_CERT_TYPE, "id-netscape-certtype", "Netscape Certificate Type" },
EXT_NS_CERT_TYPE,
},
{
{ NULL, NULL, NULL },
0,
},
};
static const oid_descriptor_t oid_ext_key_usage[] =
{
{ OID_SERVER_AUTH, "id-kp-serverAuth", "TLS Web Server Authentication" },
{ OID_CLIENT_AUTH, "id-kp-clientAuth", "TLS Web Client Authentication" },
{ OID_CODE_SIGNING, "id-kp-codeSigning", "Code Signing" },
{ OID_EMAIL_PROTECTION, "id-kp-emailProtection", "E-mail Protection" },
{ OID_TIME_STAMPING, "id-kp-timeStamping", "Time Stamping" },
{ OID_OCSP_SIGNING, "id-kp-OCSPSigning", "OCSP Signing" },
{ NULL, NULL, NULL },
};
/*
* For SignatureAlgorithmIdentifier
*/
typedef struct {
oid_descriptor_t descriptor;
md_type_t md_alg;
pk_type_t pk_alg;
} oid_sig_alg_t;
static const oid_sig_alg_t oid_sig_alg[] =
{
{
{ OID_PKCS1_MD2, "md2WithRSAEncryption", "RSA with MD2" },
POLARSSL_MD_MD2, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_MD4, "md4WithRSAEncryption", "RSA with MD4" },
POLARSSL_MD_MD4, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_MD5, "md5WithRSAEncryption", "RSA with MD5" },
POLARSSL_MD_MD5, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_SHA1, "sha-1WithRSAEncryption", "RSA with SHA1" },
POLARSSL_MD_SHA1, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_SHA224, "sha224WithRSAEncryption", "RSA with SHA-224" },
POLARSSL_MD_SHA224, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_SHA256, "sha256WithRSAEncryption", "RSA with SHA-256" },
POLARSSL_MD_SHA256, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_SHA384, "sha384WithRSAEncryption", "RSA with SHA-384" },
POLARSSL_MD_SHA384, POLARSSL_PK_RSA,
},
{
{ OID_PKCS1_SHA512, "sha512WithRSAEncryption", "RSA with SHA-512" },
POLARSSL_MD_SHA512, POLARSSL_PK_RSA,
},
{
{ OID_RSA_SHA_OBS, "sha-1WithRSAEncryption", "RSA with SHA1" },
POLARSSL_MD_SHA1, POLARSSL_PK_RSA,
},
{
{ NULL, NULL, NULL },
0, 0,
},
};
/*
* For PublicKeyInfo
*/
typedef struct {
oid_descriptor_t descriptor;
pk_type_t pk_alg;
} oid_pk_alg_t;
static const oid_pk_alg_t oid_pk_alg[] =
{
{
{ OID_PKCS1_RSA, "rsaEncryption", "RSA" },
POLARSSL_PK_RSA,
},
{
{ NULL, NULL, NULL },
0,
},
};
/*
* 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[] =
{
{
{ OID_DIGEST_ALG_MD2, "id-md2", "MD2" },
POLARSSL_MD_MD2,
},
{
{ OID_DIGEST_ALG_MD4, "id-md4", "MD4" },
POLARSSL_MD_MD4,
},
{
{ OID_DIGEST_ALG_MD5, "id-md5", "MD5" },
POLARSSL_MD_MD5,
},
{
{ OID_DIGEST_ALG_SHA1, "id-sha1", "SHA-1" },
POLARSSL_MD_SHA1,
},
{
{ OID_DIGEST_ALG_SHA1, "id-sha1", "SHA-1" },
POLARSSL_MD_SHA1,
},
{
{ OID_DIGEST_ALG_SHA224, "id-sha224", "SHA-224" },
POLARSSL_MD_SHA224,
},
{
{ OID_DIGEST_ALG_SHA256, "id-sha256", "SHA-256" },
POLARSSL_MD_SHA256,
},
{
{ OID_DIGEST_ALG_SHA384, "id-sha384", "SHA-384" },
POLARSSL_MD_SHA384,
},
{
{ OID_DIGEST_ALG_SHA512, "id-sha512", "SHA-512" },
POLARSSL_MD_SHA512,
},
{
{ NULL, NULL, NULL },
0,
},
};
#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();
}
/* Prevent overflow in value. */
if( oid->len > sizeof(value) )
return( POLARSSL_ERR_DEBUG_BUF_TOO_SMALL );
value = 0;
for( i = 1; i < oid->len; i++ )
{
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 ) );
}
static const oid_descriptor_t *oid_descriptor_from_buf(
const void *struct_set,
size_t struct_size,
const unsigned char *oid,
size_t len )
{
const unsigned char *p = (unsigned char *) struct_set;
const oid_descriptor_t *cur;
if( struct_set == NULL || oid == NULL )
return( NULL );
cur = (const oid_descriptor_t *) p;
while( cur->asn1 != NULL )
{
if( strlen( cur->asn1 ) == len &&
memcmp( cur->asn1, oid, len ) == 0 )
{
return( cur );
}
p += struct_size;
cur = (const oid_descriptor_t *) p;
}
return( NULL );
}
static const oid_descriptor_t *oid_descriptor_from_asn1(
const void *struct_set,
size_t struct_size,
const asn1_buf *oid )
{
return oid_descriptor_from_buf( struct_set, struct_size,
oid->p, oid->len );
}
int oid_get_extended_key_usage( const asn1_buf *oid, const char **desc )
{
const oid_descriptor_t *data = oid_descriptor_from_asn1(
oid_ext_key_usage,
sizeof(oid_descriptor_t),
oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*desc = data->description;
return( 0 );
}
static const oid_x509_ext_t *oid_x509_ext_from_asn1( const asn1_buf *oid )
{
return (const oid_x509_ext_t *) oid_descriptor_from_asn1(
oid_x509_ext,
sizeof(oid_x509_ext_t),
oid );
}
static const oid_x520_attr_t *oid_x520_attr_from_asn1( const asn1_buf *oid )
{
return (const oid_x520_attr_t *) oid_descriptor_from_asn1(
oid_x520_attr_type,
sizeof(oid_x520_attr_t),
oid );
}
static const oid_pk_alg_t *oid_pk_alg_from_asn1( const asn1_buf *oid )
{
return (const oid_pk_alg_t *) oid_descriptor_from_asn1(
oid_pk_alg,
sizeof(oid_pk_alg_t),
oid );
}
static const oid_sig_alg_t *oid_sig_alg_from_asn1( const asn1_buf *oid )
{
return (const oid_sig_alg_t *) oid_descriptor_from_asn1(
oid_sig_alg,
sizeof(oid_sig_alg_t),
oid );
}
static const oid_md_alg_t *oid_md_alg_from_asn1( const asn1_buf *oid )
{
return (const oid_md_alg_t *) oid_descriptor_from_asn1(
oid_md_alg,
sizeof(oid_md_alg_t),
oid );
}
int oid_get_x509_ext_type( const asn1_buf *oid, int *ext_type )
{
const oid_x509_ext_t *data = oid_x509_ext_from_asn1( oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*ext_type = data->ext_type;
return( 0 );
}
int oid_get_attr_short_name( const asn1_buf *oid, const char **short_name )
{
const oid_x520_attr_t *data = oid_x520_attr_from_asn1( oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*short_name = data->short_name;
return( 0 );
}
int oid_get_pk_alg( const asn1_buf *oid, pk_type_t *pk_alg )
{
const oid_pk_alg_t *data = oid_pk_alg_from_asn1( oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*pk_alg = data->pk_alg;
return( 0 );
}
int oid_get_sig_alg_desc( const asn1_buf *oid, const char **desc )
{
const oid_sig_alg_t *data = oid_sig_alg_from_asn1( oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*desc = data->descriptor.description;
return( 0 );
}
int oid_get_sig_alg( const asn1_buf *oid,
md_type_t *md_alg, pk_type_t *pk_alg )
{
const oid_sig_alg_t *data = oid_sig_alg_from_asn1( oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*md_alg = data->md_alg;
*pk_alg = data->pk_alg;
return( 0 );
}
int oid_get_oid_by_sig_alg( pk_type_t pk_alg, md_type_t md_alg,
const char **oid_str )
{
const oid_sig_alg_t *cur = oid_sig_alg;
while( cur->descriptor.asn1 != NULL )
{
if( cur->pk_alg == pk_alg &&
cur->md_alg == md_alg )
{
*oid_str = cur->descriptor.asn1;
return( 0 );
}
cur++;
}
return( POLARSSL_ERR_OID_NOT_FOUND );
}
int oid_get_md_alg( const asn1_buf *oid,
md_type_t *md_alg )
{
const oid_md_alg_t *data = oid_md_alg_from_asn1( oid );
if( data == NULL )
return( POLARSSL_ERR_OID_NOT_FOUND );
*md_alg = data->md_alg;
return( 0 );
}
int oid_get_oid_by_md( md_type_t md_alg,
const char **oid_str )
{
const oid_md_alg_t *cur = oid_md_alg;
while( cur->descriptor.asn1 != NULL )
{
if( cur->md_alg == md_alg )
{
*oid_str = cur->descriptor.asn1;
return( 0 );
}
cur++;
}
return( POLARSSL_ERR_OID_NOT_FOUND );
}
#endif /* POLARSSL_OID_C */