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Diffstat (limited to 'security/nss/lib/freebl/rijndael.h')
-rw-r--r-- | security/nss/lib/freebl/rijndael.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/rijndael.h b/security/nss/lib/freebl/rijndael.h new file mode 100644 index 000000000..2a928ae4f --- /dev/null +++ b/security/nss/lib/freebl/rijndael.h @@ -0,0 +1,86 @@ +/* + * 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, + 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_ */ |