1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* 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.
*
* $Id$
*/
#ifndef _RIJNDAEL_H_
#define _RIJNDAEL_H_ 1
#define RIJNDAEL_MIN_BLOCKSIZE 16 /* bytes */
#define RIJNDAEL_MAX_BLOCKSIZE 32 /* bytes */
typedef SECStatus AESFunc(AESContext *cx, unsigned char *output,
unsigned int *outputLen, unsigned int maxOutputLen,
const unsigned char *input, unsigned int inputLen,
unsigned int blocksize);
typedef SECStatus AESBlockFunc(AESContext *cx,
unsigned char *output,
const unsigned char *input);
/* AESContextStr
*
* Values which maintain the state for Rijndael encryption/decryption.
*
* iv - initialization vector for CBC mode
* Nb - the number of bytes in a block, specified by user
* Nr - the number of rounds, specified by a table
* expandedKey - the round keys in 4-byte words, the length is Nr * Nb
* worker - the encryption/decryption function to use with this context
*/
struct AESContextStr
{
unsigned int Nb;
unsigned int Nr;
PRUint32 *expandedKey;
AESFunc *worker;
unsigned char iv[RIJNDAEL_MAX_BLOCKSIZE];
};
/* RIJNDAEL_NUM_ROUNDS
*
* Number of rounds per execution
* Nk - number of key bytes
* Nb - blocksize (in bytes)
*/
#define RIJNDAEL_NUM_ROUNDS(Nk, Nb) \
(PR_MAX(Nk, Nb) + 6)
/* RIJNDAEL_NUM_ROUNDS
*
* Maximum number of bytes in the state (spec includes up to 256-bit block
* size)
*/
#define RIJNDAEL_MAX_STATE_SIZE 32
#endif /* _RIJNDAEL_H_ */
|
