1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/nss/lib/freebl/rijndael.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,67 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef _RIJNDAEL_H_
1.9 +#define _RIJNDAEL_H_ 1
1.10 +
1.11 +#include "blapii.h"
1.12 +
1.13 +#define RIJNDAEL_MIN_BLOCKSIZE 16 /* bytes */
1.14 +#define RIJNDAEL_MAX_BLOCKSIZE 32 /* bytes */
1.15 +
1.16 +typedef SECStatus AESBlockFunc(AESContext *cx,
1.17 + unsigned char *output,
1.18 + const unsigned char *input);
1.19 +
1.20 +/* RIJNDAEL_NUM_ROUNDS
1.21 + *
1.22 + * Number of rounds per execution
1.23 + * Nk - number of key bytes
1.24 + * Nb - blocksize (in bytes)
1.25 + */
1.26 +#define RIJNDAEL_NUM_ROUNDS(Nk, Nb) \
1.27 + (PR_MAX(Nk, Nb) + 6)
1.28 +
1.29 +/* RIJNDAEL_MAX_STATE_SIZE
1.30 + *
1.31 + * Maximum number of bytes in the state (spec includes up to 256-bit block
1.32 + * size)
1.33 + */
1.34 +#define RIJNDAEL_MAX_STATE_SIZE 32
1.35 +
1.36 +/*
1.37 + * This magic number is (Nb_max * (Nr_max + 1))
1.38 + * where Nb_max is the maximum block size in 32-bit words,
1.39 + * Nr_max is the maximum number of rounds, which is Nb_max + 6
1.40 + */
1.41 +#define RIJNDAEL_MAX_EXP_KEY_SIZE (8 * 15)
1.42 +
1.43 +/* AESContextStr
1.44 + *
1.45 + * Values which maintain the state for Rijndael encryption/decryption.
1.46 + *
1.47 + * iv - initialization vector for CBC mode
1.48 + * Nb - the number of bytes in a block, specified by user
1.49 + * Nr - the number of rounds, specified by a table
1.50 + * expandedKey - the round keys in 4-byte words, the length is Nr * Nb
1.51 + * worker - the encryption/decryption function to use with worker_cx
1.52 + * destroy - if not NULL, the destroy function to use with worker_cx
1.53 + * worker_cx - the context for worker and destroy
1.54 + * isBlock - is the mode of operation a block cipher or a stream cipher?
1.55 + */
1.56 +struct AESContextStr
1.57 +{
1.58 + unsigned int Nb;
1.59 + unsigned int Nr;
1.60 + freeblCipherFunc worker;
1.61 + /* NOTE: The offsets of iv and expandedKey are hardcoded in intel-aes.s.
1.62 + * Don't add new members before them without updating intel-aes.s. */
1.63 + unsigned char iv[RIJNDAEL_MAX_BLOCKSIZE];
1.64 + PRUint32 expandedKey[RIJNDAEL_MAX_EXP_KEY_SIZE];
1.65 + freeblDestroyFunc destroy;
1.66 + void *worker_cx;
1.67 + PRBool isBlock;
1.68 +};
1.69 +
1.70 +#endif /* _RIJNDAEL_H_ */
