mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
aa2d9a76b4
[skip ci] Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7795)
103 lines
4.4 KiB
C
103 lines
4.4 KiB
C
/*
|
|
* Copyright 1995-2016 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
|
|
*/
|
|
|
|
#define idea_mul(r,a,b,ul) \
|
|
ul=(unsigned long)a*b; \
|
|
if (ul != 0) \
|
|
{ \
|
|
r=(ul&0xffff)-(ul>>16); \
|
|
r-=((r)>>16); \
|
|
} \
|
|
else \
|
|
r=(-(int)a-b+1); /* assuming a or b is 0 and in range */
|
|
|
|
/* 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 thru */ \
|
|
case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
|
|
/* fall thru */ \
|
|
case 6: l2|=((unsigned long)(*(--(c))))<<16; \
|
|
/* fall thru */ \
|
|
case 5: l2|=((unsigned long)(*(--(c))))<<24; \
|
|
/* fall thru */ \
|
|
case 4: l1 =((unsigned long)(*(--(c)))) ; \
|
|
/* fall thru */ \
|
|
case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
|
|
/* fall thru */ \
|
|
case 2: l1|=((unsigned long)(*(--(c))))<<16; \
|
|
/* fall thru */ \
|
|
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 thru */ \
|
|
case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
|
|
/* fall thru */ \
|
|
case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
|
|
/* fall thru */ \
|
|
case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
|
|
/* fall thru */ \
|
|
case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
|
|
/* fall thru */ \
|
|
case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
|
|
/* fall thru */ \
|
|
case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
|
|
/* fall thru */ \
|
|
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))
|
|
|
|
#undef s2n
|
|
#define s2n(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>> 8L)&0xff))
|
|
|
|
#undef n2s
|
|
#define n2s(c,l) (l =((IDEA_INT)(*((c)++)))<< 8L, \
|
|
l|=((IDEA_INT)(*((c)++))) )
|
|
|
|
|
|
#define E_IDEA(num) \
|
|
x1&=0xffff; \
|
|
idea_mul(x1,x1,*p,ul); p++; \
|
|
x2+= *(p++); \
|
|
x3+= *(p++); \
|
|
x4&=0xffff; \
|
|
idea_mul(x4,x4,*p,ul); p++; \
|
|
t0=(x1^x3)&0xffff; \
|
|
idea_mul(t0,t0,*p,ul); p++; \
|
|
t1=(t0+(x2^x4))&0xffff; \
|
|
idea_mul(t1,t1,*p,ul); p++; \
|
|
t0+=t1; \
|
|
x1^=t1; \
|
|
x4^=t0; \
|
|
ul=x2^t0; /* do the swap to x3 */ \
|
|
x2=x3^t1; \
|
|
x3=ul;
|