168 lines
8.8 KiB
C
Vendored
168 lines
8.8 KiB
C
Vendored
/*
|
|
* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#ifdef OPENSSL_SYS_WIN32
|
|
#include <stdlib.h>
|
|
#endif
|
|
|
|
/* NOTE - c is not incremented as per n2l */
|
|
#define n2ln(c, l1, l2, n) \
|
|
{ \
|
|
c += n; \
|
|
l1 = l2 = 0; \
|
|
switch (n) { \
|
|
case 8: \
|
|
l2 = ((unsigned long)(*(--(c)))); \
|
|
/* fall through */ \
|
|
case 7: \
|
|
l2 |= ((unsigned long)(*(--(c)))) << 8; \
|
|
/* fall through */ \
|
|
case 6: \
|
|
l2 |= ((unsigned long)(*(--(c)))) << 16; \
|
|
/* fall through */ \
|
|
case 5: \
|
|
l2 |= ((unsigned long)(*(--(c)))) << 24; \
|
|
/* fall through */ \
|
|
case 4: \
|
|
l1 = ((unsigned long)(*(--(c)))); \
|
|
/* fall through */ \
|
|
case 3: \
|
|
l1 |= ((unsigned long)(*(--(c)))) << 8; \
|
|
/* fall through */ \
|
|
case 2: \
|
|
l1 |= ((unsigned long)(*(--(c)))) << 16; \
|
|
/* fall through */ \
|
|
case 1: \
|
|
l1 |= ((unsigned long)(*(--(c)))) << 24; \
|
|
} \
|
|
}
|
|
|
|
/* NOTE - c is not incremented as per l2n */
|
|
#define l2nn(l1, l2, c, n) \
|
|
{ \
|
|
c += n; \
|
|
switch (n) { \
|
|
case 8: \
|
|
*(--(c)) = (unsigned char)(((l2)) & 0xff); \
|
|
/* fall through */ \
|
|
case 7: \
|
|
*(--(c)) = (unsigned char)(((l2) >> 8) & 0xff); \
|
|
/* fall through */ \
|
|
case 6: \
|
|
*(--(c)) = (unsigned char)(((l2) >> 16) & 0xff); \
|
|
/* fall through */ \
|
|
case 5: \
|
|
*(--(c)) = (unsigned char)(((l2) >> 24) & 0xff); \
|
|
/* fall through */ \
|
|
case 4: \
|
|
*(--(c)) = (unsigned char)(((l1)) & 0xff); \
|
|
/* fall through */ \
|
|
case 3: \
|
|
*(--(c)) = (unsigned char)(((l1) >> 8) & 0xff); \
|
|
/* fall through */ \
|
|
case 2: \
|
|
*(--(c)) = (unsigned char)(((l1) >> 16) & 0xff); \
|
|
/* fall through */ \
|
|
case 1: \
|
|
*(--(c)) = (unsigned char)(((l1) >> 24) & 0xff); \
|
|
} \
|
|
}
|
|
|
|
#undef n2l
|
|
#define n2l(c, l) (l = ((unsigned long)(*((c)++))) << 24L, \
|
|
l |= ((unsigned long)(*((c)++))) << 16L, \
|
|
l |= ((unsigned long)(*((c)++))) << 8L, \
|
|
l |= ((unsigned long)(*((c)++))))
|
|
|
|
#undef l2n
|
|
#define l2n(l, c) (*((c)++) = (unsigned char)(((l) >> 24L) & 0xff), \
|
|
*((c)++) = (unsigned char)(((l) >> 16L) & 0xff), \
|
|
*((c)++) = (unsigned char)(((l) >> 8L) & 0xff), \
|
|
*((c)++) = (unsigned char)(((l)) & 0xff))
|
|
|
|
#if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
|
|
#define ROTL(a, n) (_lrotl(a, n))
|
|
#else
|
|
#define ROTL(a, n) ((((a) << (n)) & 0xffffffffL) | ((a) >> ((32 - (n)) & 31)))
|
|
#endif
|
|
|
|
#define C_M 0x3fc
|
|
#define C_0 22L
|
|
#define C_1 14L
|
|
#define C_2 6L
|
|
#define C_3 2L /* left shift */
|
|
|
|
/* The rotate has an extra 16 added to it to help the x86 asm */
|
|
#if defined(CAST_PTR)
|
|
#define E_CAST(n, key, L, R, OP1, OP2, OP3) \
|
|
{ \
|
|
int i; \
|
|
t = (key[n * 2] OP1 R) & 0xffffffffL; \
|
|
i = key[n * 2 + 1]; \
|
|
t = ROTL(t, i); \
|
|
L ^= (((((*(CAST_LONG *)((unsigned char *) \
|
|
CAST_S_table0 \
|
|
+ ((t >> C_2) & C_M)) OP2 \
|
|
* (CAST_LONG *)((unsigned char *) \
|
|
CAST_S_table1 \
|
|
+ ((t << C_3) & C_M))) \
|
|
& 0xffffffffL) OP3 \
|
|
* (CAST_LONG *)((unsigned char *) \
|
|
CAST_S_table2 \
|
|
+ ((t >> C_0) & C_M))) \
|
|
& 0xffffffffL) OP1 \
|
|
* (CAST_LONG *)((unsigned char *) \
|
|
CAST_S_table3 \
|
|
+ ((t >> C_1) & C_M))) \
|
|
& 0xffffffffL; \
|
|
}
|
|
#elif defined(CAST_PTR2)
|
|
#define E_CAST(n, key, L, R, OP1, OP2, OP3) \
|
|
{ \
|
|
int i; \
|
|
CAST_LONG u, v, w; \
|
|
w = (key[n * 2] OP1 R) & 0xffffffffL; \
|
|
i = key[n * 2 + 1]; \
|
|
w = ROTL(w, i); \
|
|
u = w >> C_2; \
|
|
v = w << C_3; \
|
|
u &= C_M; \
|
|
v &= C_M; \
|
|
t = *(CAST_LONG *)((unsigned char *)CAST_S_table0 + u); \
|
|
u = w >> C_0; \
|
|
t = (t OP2 * (CAST_LONG *)((unsigned char *)CAST_S_table1 + v)) & 0xffffffffL; \
|
|
v = w >> C_1; \
|
|
u &= C_M; \
|
|
v &= C_M; \
|
|
t = (t OP3 * (CAST_LONG *)((unsigned char *)CAST_S_table2 + u) & 0xffffffffL); \
|
|
t = (t OP1 * (CAST_LONG *)((unsigned char *)CAST_S_table3 + v) & 0xffffffffL); \
|
|
L ^= (t & 0xffffffff); \
|
|
}
|
|
#else
|
|
#define E_CAST(n, key, L, R, OP1, OP2, OP3) \
|
|
{ \
|
|
CAST_LONG a, b, c, d; \
|
|
t = (key[n * 2] OP1 R) & 0xffffffff; \
|
|
t = ROTL(t, (key[n * 2 + 1])); \
|
|
a = CAST_S_table0[(t >> 8) & 0xff]; \
|
|
b = CAST_S_table1[(t) & 0xff]; \
|
|
c = CAST_S_table2[(t >> 24) & 0xff]; \
|
|
d = CAST_S_table3[(t >> 16) & 0xff]; \
|
|
L ^= (((((a OP2 b) & 0xffffffffL) OP3 c) & 0xffffffffL) OP1 d) & 0xffffffffL; \
|
|
}
|
|
#endif
|
|
|
|
extern const CAST_LONG CAST_S_table0[256];
|
|
extern const CAST_LONG CAST_S_table1[256];
|
|
extern const CAST_LONG CAST_S_table2[256];
|
|
extern const CAST_LONG CAST_S_table3[256];
|
|
extern const CAST_LONG CAST_S_table4[256];
|
|
extern const CAST_LONG CAST_S_table5[256];
|
|
extern const CAST_LONG CAST_S_table6[256];
|
|
extern const CAST_LONG CAST_S_table7[256];
|