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/*
* 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 Netscape are
* Copyright (C) 1994-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*
* hasht.h - public data structures for the hashing library
*
* $Id$
*/
#ifndef _HASHT_H_
#define _HASHT_H_
/* Opaque objects */
typedef struct SECHashObjectStr SECHashObject;
typedef struct HASHContextStr HASHContext;
/*
* The hash functions the security library supports
* NOTE the order must match the definition of SECHashObjects[]!
*/
typedef enum {
HASH_AlgNULL = 0,
HASH_AlgMD2 = 1,
HASH_AlgMD5 = 2,
HASH_AlgSHA1 = 3,
HASH_AlgTOTAL
} HASH_HashType;
/*
* Number of bytes each hash algorithm produces
*/
#define MD2_LENGTH 16
#define MD5_LENGTH 16
#define SHA1_LENGTH 20
/*
* Structure to hold hash computation info and routines
*/
struct SECHashObjectStr {
unsigned int length;
void * (*create)(void);
void * (*clone)(void *);
void (*destroy)(void *, PRBool);
void (*begin)(void *);
void (*update)(void *, const unsigned char *, unsigned int);
void (*end)(void *, unsigned char *, unsigned int *, unsigned int);
};
struct HASHContextStr {
const struct SECHashObjectStr *hashobj;
void *hash_context;
};
/* This symbol is NOT exported from the NSS DLL. Code that needs a
* pointer to one of the SECHashObjects should call HASH_GetHashObject()
* instead. See "sechash.h".
*/
extern const SECHashObject SECHashObjects[];
/* Only those functions below the PKCS #11 line should use SECRawHashObjects.
* This symbol is not exported from the NSS DLL.
*/
extern const SECHashObject SECRawHashObjects[];
#endif /* _HASHT_H_ */
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