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164 lines
5.4 KiB
C
164 lines
5.4 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _SECDERT_H_
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#define _SECDERT_H_
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/*
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* secdert.h - public data structures for the DER encoding and
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* decoding utilities library
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*
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* $Id: secdert.h,v 1.5 2007/10/12 01:44:51 julien.pierre.boogz%sun.com Exp $
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*/
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#include "utilrename.h"
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#include "seccomon.h"
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typedef struct DERTemplateStr DERTemplate;
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/*
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** An array of these structures defines an encoding for an object using DER.
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** The array usually starts with a dummy entry whose kind is DER_SEQUENCE;
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** such an array is terminated with an entry where kind == 0. (An array
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** which consists of a single component does not require a second dummy
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** entry -- the array is only searched as long as previous component(s)
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** instruct it.)
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*/
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struct DERTemplateStr {
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/*
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** Kind of item being decoded/encoded, including tags and modifiers.
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*/
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unsigned long kind;
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/*
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** Offset from base of structure to field that holds the value
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** being decoded/encoded.
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*/
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unsigned int offset;
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/*
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** When kind suggests it (DER_POINTER, DER_INDEFINITE, DER_INLINE),
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** this points to a sub-template for nested encoding/decoding.
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*/
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DERTemplate *sub;
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/*
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** Argument value, dependent on "kind" and/or template placement
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** within an array of templates:
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** - In the first element of a template array, the value is the
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** size of the structure to allocate when this template is being
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** referenced by another template via DER_POINTER or DER_INDEFINITE.
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** - In a component of a DER_SET or DER_SEQUENCE which is *not* a
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** DER_UNIVERSAL type (that is, it has a class tag for either
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** DER_APPLICATION, DER_CONTEXT_SPECIFIC, or DER_PRIVATE), the
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** value is the underlying type of item being decoded/encoded.
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*/
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unsigned long arg;
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};
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/************************************************************************/
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/* default chunksize for arenas used for DER stuff */
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#define DER_DEFAULT_CHUNKSIZE (2048)
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/*
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** BER/DER values for ASN.1 identifier octets.
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*/
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#define DER_TAG_MASK 0xff
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/*
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* BER/DER universal type tag numbers.
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* The values are defined by the X.208 standard; do not change them!
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* NOTE: if you add anything to this list, you must add code to derdec.c
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* to accept the tag, and probably also to derenc.c to encode it.
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*/
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#define DER_TAGNUM_MASK 0x1f
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#define DER_BOOLEAN 0x01
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#define DER_INTEGER 0x02
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#define DER_BIT_STRING 0x03
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#define DER_OCTET_STRING 0x04
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#define DER_NULL 0x05
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#define DER_OBJECT_ID 0x06
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#define DER_SEQUENCE 0x10
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#define DER_SET 0x11
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#define DER_PRINTABLE_STRING 0x13
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#define DER_T61_STRING 0x14
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#define DER_IA5_STRING 0x16
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#define DER_UTC_TIME 0x17
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#define DER_VISIBLE_STRING 0x1a
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#define DER_HIGH_TAG_NUMBER 0x1f
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/*
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** Modifiers to type tags. These are also specified by a/the
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** standard, and must not be changed.
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*/
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#define DER_METHOD_MASK 0x20
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#define DER_PRIMITIVE 0x00
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#define DER_CONSTRUCTED 0x20
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#define DER_CLASS_MASK 0xc0
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#define DER_UNIVERSAL 0x00
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#define DER_APPLICATION 0x40
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#define DER_CONTEXT_SPECIFIC 0x80
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#define DER_PRIVATE 0xc0
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/*
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** Our additions, used for templates.
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** These are not defined by any standard; the values are used internally only.
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** Just be careful to keep them out of the low 8 bits.
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*/
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#define DER_OPTIONAL 0x00100
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#define DER_EXPLICIT 0x00200
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#define DER_ANY 0x00400
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#define DER_INLINE 0x00800
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#define DER_POINTER 0x01000
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#define DER_INDEFINITE 0x02000
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#define DER_DERPTR 0x04000
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#define DER_SKIP 0x08000
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#define DER_FORCE 0x10000
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#define DER_OUTER 0x40000 /* for DER_DERPTR */
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/*
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** Macro to convert der decoded bit string into a decoded octet
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** string. All it needs to do is fiddle with the length code.
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*/
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#define DER_ConvertBitString(item) \
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{ \
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(item)->len = ((item)->len + 7) >> 3; \
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}
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#endif /* _SECDERT_H_ */
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