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/* ***** 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 SEED code.
*
* The Initial Developer of the Original Code is
* KISA(Korea Information Security Agency).
*
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer.
* 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 ***** */
#ifndef HEADER_SEED_H
#define HEADER_SEED_H
#include <string.h>
#include "blapi.h"
#if !defined(NO_SYS_TYPES_H)
# include <sys/types.h>
#endif
typedef PRUint32 seed_word;
#define G_FUNC(v) \
SS[0][((v) & 0xff)] ^ \
SS[1][((v)>> 8 & 0xff)] ^ \
SS[2][((v)>>16 & 0xff)] ^ \
SS[3][((v)>>24 & 0xff)]
#define char2word(c, i) \
(i) = ((((seed_word)((c)[0])) << 24) | \
(((seed_word)((c)[1])) << 16) | \
(((seed_word)((c)[2])) << 8) | \
((seed_word)((c)[3])))
#define word2char(l, c) \
*((c)+0) = (unsigned char)((l)>>24); \
*((c)+1) = (unsigned char)((l)>>16); \
*((c)+2) = (unsigned char)((l)>> 8); \
*((c)+3) = (unsigned char)((l) )
#define KEYSCHEDULE_UPDATE0(T0, T1, K0, K1, K2, K3, KC) \
(T0) = (K2); \
(K2) = (((K2)<<8) ^ ((K3)>>24)); \
(K3) = (((K3)<<8) ^ ((T0)>>24)); \
(T0) = ((K0) + (K2) - (KC)); \
(T1) = ((K1) + (KC) - (K3))
#define KEYSCHEDULE_UPDATE1(T0, T1, K0, K1, K2, K3, KC) \
(T0) = (K0); \
(K0) = (((K0)>>8) ^ ((K1)<<24)); \
(K1) = (((K1)>>8) ^ ((T0)<<24)); \
(T0) = ((K0) + (K2) - (KC)); \
(T1) = ((K1) + (KC) - (K3))
#define KEYUPDATE_TEMP(T0, T1, K) \
(K)[0] = G_FUNC((T0)); \
(K)[1] = G_FUNC((T1))
#define XOR_SEEDBLOCK(DST, SRC) \
(DST)[0] ^= (SRC)[0]; \
(DST)[1] ^= (SRC)[1]; \
(DST)[2] ^= (SRC)[2]; \
(DST)[3] ^= (SRC)[3]
#define MOV_SEEDBLOCK(DST, SRC) \
(DST)[0] = (SRC)[0]; \
(DST)[1] = (SRC)[1]; \
(DST)[2] = (SRC)[2]; \
(DST)[3] = (SRC)[3]
# define CHAR2WORD(C, I) \
char2word((C), (I)[0]); \
char2word((C)+4, (I)[1]); \
char2word((C)+8, (I)[2]); \
char2word((C)+12, (I)[3])
# define WORD2CHAR(I, C) \
word2char((I)[0], (C)); \
word2char((I)[1], (C+4)); \
word2char((I)[2], (C+8)); \
word2char((I)[3], (C+12))
# define E_SEED(T0, T1, X1, X2, X3, X4, rbase) \
(T0) = (X3) ^ (ks->data)[(rbase)]; \
(T1) = (X4) ^ (ks->data)[(rbase)+1]; \
(T1) ^= (T0); \
(T1) = G_FUNC(T1); \
(T0) += (T1); \
(T0) = G_FUNC(T0); \
(T1) += (T0); \
(T1) = G_FUNC(T1); \
(T0) += (T1); \
(X1) ^= (T0); \
(X2) ^= (T1)
#ifdef __cplusplus
extern "C" {
#endif
typedef struct seed_key_st {
PRUint32 data[32];
} SEED_KEY_SCHEDULE;
struct SEEDContextStr {
unsigned char iv[SEED_BLOCK_SIZE];
SEED_KEY_SCHEDULE ks;
int mode;
unsigned int encrypt;
};
void SEED_set_key(const unsigned char rawkey[SEED_KEY_LENGTH],
SEED_KEY_SCHEDULE *ks);
void SEED_encrypt(const unsigned char s[SEED_BLOCK_SIZE],
unsigned char d[SEED_BLOCK_SIZE],
const SEED_KEY_SCHEDULE *ks);
void SEED_decrypt(const unsigned char s[SEED_BLOCK_SIZE],
unsigned char d[SEED_BLOCK_SIZE],
const SEED_KEY_SCHEDULE *ks);
void SEED_ecb_encrypt(const unsigned char *in, unsigned char *out,
const SEED_KEY_SCHEDULE *ks, int enc);
void SEED_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const SEED_KEY_SCHEDULE *ks,
unsigned char ivec[SEED_BLOCK_SIZE], int enc);
#ifdef __cplusplus
}
#endif
#endif /* HEADER_SEED_H */
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