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Diffstat (limited to 'mozilla/security/nss/lib/freebl/rijndael.h')
| -rw-r--r-- | mozilla/security/nss/lib/freebl/rijndael.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/mozilla/security/nss/lib/freebl/rijndael.h b/mozilla/security/nss/lib/freebl/rijndael.h new file mode 100644 index 0000000..3677576 --- /dev/null +++ b/mozilla/security/nss/lib/freebl/rijndael.h @@ -0,0 +1,95 @@ +/* ***** 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: rijndael.h,v 1.11 2005/08/06 07:24:21 nelsonb%netscape.com Exp $ */ + +#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); + +/* 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_MAX_STATE_SIZE + * + * Maximum number of bytes in the state (spec includes up to 256-bit block + * size) + */ +#define RIJNDAEL_MAX_STATE_SIZE 32 + +/* + * This magic number is (Nb_max * (Nr_max + 1)) + * where Nb_max is the maximum block size in 32-bit words, + * Nr_max is the maximum number of rounds, which is Nb_max + 6 + */ +#define RIJNDAEL_MAX_EXP_KEY_SIZE (8 * 15) + +/* 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; + AESFunc *worker; + unsigned char iv[RIJNDAEL_MAX_BLOCKSIZE]; + PRUint32 expandedKey[RIJNDAEL_MAX_EXP_KEY_SIZE]; +}; + +#endif /* _RIJNDAEL_H_ */ |