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/gecko_api/include/hasht.h

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C++ Header | 102 lines | 39 code | 9 blank | 54 comment | 0 complexity | d511ae36b207a137cb6e64a85639ec55 MD5 | raw file
  1/* ***** BEGIN LICENSE BLOCK *****
  2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  3 *
  4 * The contents of this file are subject to the Mozilla Public License Version
  5 * 1.1 (the "License"); you may not use this file except in compliance with
  6 * the License. You may obtain a copy of the License at
  7 * http://www.mozilla.org/MPL/
  8 *
  9 * Software distributed under the License is distributed on an "AS IS" basis,
 10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 11 * for the specific language governing rights and limitations under the
 12 * License.
 13 *
 14 * The Original Code is the Netscape security libraries.
 15 *
 16 * The Initial Developer of the Original Code is
 17 * Netscape Communications Corporation.
 18 * Portions created by the Initial Developer are Copyright (C) 1994-2000
 19 * the Initial Developer. All Rights Reserved.
 20 *
 21 * Contributor(s):
 22 *
 23 * Alternatively, the contents of this file may be used under the terms of
 24 * either the GNU General Public License Version 2 or later (the "GPL"), or
 25 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 26 * in which case the provisions of the GPL or the LGPL are applicable instead
 27 * of those above. If you wish to allow use of your version of this file only
 28 * under the terms of either the GPL or the LGPL, and not to allow others to
 29 * use your version of this file under the terms of the MPL, indicate your
 30 * decision by deleting the provisions above and replace them with the notice
 31 * and other provisions required by the GPL or the LGPL. If you do not delete
 32 * the provisions above, a recipient may use your version of this file under
 33 * the terms of any one of the MPL, the GPL or the LGPL.
 34 *
 35 * ***** END LICENSE BLOCK ***** */
 36/* $Id: hasht.h,v 1.7 2005/11/07 18:44:20 wtchang%redhat.com Exp $ */
 37
 38#ifndef _HASHT_H_
 39#define _HASHT_H_
 40
 41/* Opaque objects */
 42typedef struct SECHashObjectStr SECHashObject;
 43typedef struct HASHContextStr HASHContext;
 44
 45/*
 46 * The hash functions the security library supports
 47 * NOTE the order must match the definition of SECHashObjects[]!
 48 */
 49typedef enum {
 50    HASH_AlgNULL   = 0,
 51    HASH_AlgMD2    = 1,
 52    HASH_AlgMD5    = 2,
 53    HASH_AlgSHA1   = 3,
 54    HASH_AlgSHA256 = 4,
 55    HASH_AlgSHA384 = 5,
 56    HASH_AlgSHA512 = 6,
 57    HASH_AlgTOTAL
 58} HASH_HashType;
 59
 60/*
 61 * Number of bytes each hash algorithm produces
 62 */
 63#define MD2_LENGTH	16
 64#define MD5_LENGTH	16
 65#define SHA1_LENGTH	20
 66#define SHA256_LENGTH 	32
 67#define SHA384_LENGTH 	48
 68#define SHA512_LENGTH 	64
 69#define HASH_LENGTH_MAX SHA512_LENGTH
 70
 71/*
 72 * Structure to hold hash computation info and routines
 73 */
 74struct SECHashObjectStr {
 75    unsigned int length;  /* hash output length (in bytes) */
 76    void * (*create)(void);
 77    void * (*clone)(void *);
 78    void (*destroy)(void *, PRBool);
 79    void (*begin)(void *);
 80    void (*update)(void *, const unsigned char *, unsigned int);
 81    void (*end)(void *, unsigned char *, unsigned int *, unsigned int);
 82    unsigned int blocklength;  /* hash input block size (in bytes) */
 83    HASH_HashType type;
 84};
 85
 86struct HASHContextStr {
 87    const struct SECHashObjectStr *hashobj;
 88    void *hash_context;
 89};
 90
 91/* This symbol is NOT exported from the NSS DLL.  Code that needs a 
 92 * pointer to one of the SECHashObjects should call HASH_GetHashObject()
 93 * instead. See "sechash.h".
 94 */
 95extern const SECHashObject SECHashObjects[];
 96
 97/* Only those functions below the PKCS #11 line should use SECRawHashObjects.
 98 * This symbol is not exported from the NSS DLL.
 99 */
100extern const SECHashObject SECRawHashObjects[];
101
102#endif /* _HASHT_H_ */