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87 lines
3.0 KiB
C
87 lines
3.0 KiB
C
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* 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
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*
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* $Id: rijndael.h,v 1.8 2002/09/17 04:24:11 wtc%netscape.com Exp $
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*/
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#ifndef _RIJNDAEL_H_
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#define _RIJNDAEL_H_ 1
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#define RIJNDAEL_MIN_BLOCKSIZE 16 /* bytes */
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#define RIJNDAEL_MAX_BLOCKSIZE 32 /* bytes */
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typedef SECStatus AESFunc(AESContext *cx, unsigned char *output,
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unsigned int *outputLen, unsigned int maxOutputLen,
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const unsigned char *input, unsigned int inputLen,
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unsigned int blocksize);
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typedef SECStatus AESBlockFunc(AESContext *cx,
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unsigned char *output,
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const unsigned char *input);
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/* AESContextStr
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*
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* Values which maintain the state for Rijndael encryption/decryption.
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*
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* iv - initialization vector for CBC mode
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* Nb - the number of bytes in a block, specified by user
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* Nr - the number of rounds, specified by a table
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* expandedKey - the round keys in 4-byte words, the length is Nr * Nb
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* worker - the encryption/decryption function to use with this context
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*/
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struct AESContextStr
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{
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unsigned int Nb;
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unsigned int Nr;
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PRUint32 *expandedKey;
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AESFunc *worker;
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unsigned char iv[RIJNDAEL_MAX_BLOCKSIZE];
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};
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/* RIJNDAEL_NUM_ROUNDS
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*
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* Number of rounds per execution
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* Nk - number of key bytes
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* Nb - blocksize (in bytes)
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*/
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#define RIJNDAEL_NUM_ROUNDS(Nk, Nb) \
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(PR_MAX(Nk, Nb) + 6)
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/* RIJNDAEL_NUM_ROUNDS
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*
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* Maximum number of bytes in the state (spec includes up to 256-bit block
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* size)
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*/
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#define RIJNDAEL_MAX_STATE_SIZE 32
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#endif /* _RIJNDAEL_H_ */
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