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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 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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