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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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67
security/nss/lib/freebl/rijndael.h Normal file
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _RIJNDAEL_H_
#define _RIJNDAEL_H_ 1
#include "blapii.h"
#define RIJNDAEL_MIN_BLOCKSIZE 16 /* bytes */
#define RIJNDAEL_MAX_BLOCKSIZE 32 /* bytes */
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 worker_cx
* destroy - if not NULL, the destroy function to use with worker_cx
* worker_cx - the context for worker and destroy
* isBlock - is the mode of operation a block cipher or a stream cipher?
*/
struct AESContextStr {
unsigned int Nb;
unsigned int Nr;
freeblCipherFunc worker;
/* NOTE: The offsets of iv and expandedKey are hardcoded in intel-aes.s.
* Don't add new members before them without updating intel-aes.s. */
unsigned char iv[RIJNDAEL_MAX_BLOCKSIZE];
PRUint32 expandedKey[RIJNDAEL_MAX_EXP_KEY_SIZE];
freeblDestroyFunc destroy;
void *worker_cx;
PRBool isBlock;
int mode;
};
#endif /* _RIJNDAEL_H_ */