RetroZilla/security/nss/lib/util/secdig.h

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/*
* crypto.h - public data structures and prototypes for the crypto library
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* $Id: secdig.h,v 1.8 2008/06/14 14:20:38 wtc%google.com Exp $ */
#ifndef _SECDIG_H_
#define _SECDIG_H_
#include "utilrename.h"
#include "secdigt.h"
#include "seccomon.h"
#include "secasn1t.h"
#include "secdert.h"
SEC_BEGIN_PROTOS
extern const SEC_ASN1Template sgn_DigestInfoTemplate[];
SEC_ASN1_CHOOSER_DECLARE(sgn_DigestInfoTemplate)
/****************************************/
/*
** Digest-info functions
*/
/*
** Create a new digest-info object
** "algorithm" one of SEC_OID_MD2, SEC_OID_MD5, or SEC_OID_SHA1
** "sig" the raw signature data (from MD2 or MD5)
** "sigLen" the length of the signature data
**
** NOTE: this is a low level routine used to prepare some data for PKCS#1
** digital signature formatting.
**
** XXX It might be nice to combine the create and encode functions.
** I think that is all anybody ever wants to do anyway.
*/
extern SGNDigestInfo *SGN_CreateDigestInfo(SECOidTag algorithm,
unsigned char *sig,
unsigned int sigLen);
/*
** Destroy a digest-info object
*/
extern void SGN_DestroyDigestInfo(SGNDigestInfo *info);
/*
** Encode a digest-info object
** "poolp" is where to allocate the result from; it can be NULL in
** which case generic heap allocation (XP_ALLOC) will be used
** "dest" is where to store the result; it can be NULL, in which case
** it will be allocated (from poolp or heap, as explained above)
** "diginfo" is the object to be encoded
** The return value is NULL if any error occurred, otherwise it is the
** resulting SECItem (either allocated or the same as the "dest" parameter).
**
** XXX It might be nice to combine the create and encode functions.
** I think that is all anybody ever wants to do anyway.
*/
extern SECItem *SGN_EncodeDigestInfo(PLArenaPool *poolp, SECItem *dest,
SGNDigestInfo *diginfo);
/*
** Decode a DER encoded digest info objct.
** didata is thr source of the encoded digest.
** The return value is NULL if an error occurs. Otherwise, a
** digest info object which is allocated within it's own
** pool is returned. The digest info should be deleted
** by later calling SGN_DestroyDigestInfo.
*/
extern SGNDigestInfo *SGN_DecodeDigestInfo(SECItem *didata);
/*
** Copy digest info.
** poolp is the arena to which the digest will be copied.
** a is the destination digest, it must be non-NULL.
** b is the source digest
** This function is for copying digests. It allows digests
** to be copied into a specified pool. If the digest is in
** the same pool as other data, you do not want to delete
** the digest by calling SGN_DestroyDigestInfo.
** A return value of SECFailure indicates an error. A return
** of SECSuccess indicates no error occured.
*/
extern SECStatus SGN_CopyDigestInfo(PLArenaPool *poolp,
SGNDigestInfo *a,
SGNDigestInfo *b);
/*
** Compare two digest-info objects, returning the difference between
** them.
*/
extern SECComparison SGN_CompareDigestInfo(SGNDigestInfo *a, SGNDigestInfo *b);
SEC_END_PROTOS
#endif /* _SECDIG_H_ */