31 lines
537 B
C
31 lines
537 B
C
|
|
||
|
|
#ifndef MACROS
|
||
|
|
#define MACROS
|
||
|
|
|
||
|
|
#include "constants.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rotate shift left x by n bits
|
||
|
|
*/
|
||
|
|
#define rol(x, n) (((x)<<(n)) | ((x)>>(SPECK_WORD_SIZE-(n))))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rotate shift right x by n bits
|
||
|
|
*/
|
||
|
|
#define ror(x, n) (((x)>>(n)) | ((x)<<(SPECK_WORD_SIZE-(n))))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* round function
|
||
|
|
*/
|
||
|
|
#define roundFunction(x, y, k) \
|
||
|
|
x = (ror((x), SPECK_A) + (y)) ^ (k); \
|
||
|
|
y = rol((y), SPECK_B) ^ (x)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* invert round function
|
||
|
|
*/
|
||
|
|
#define invertRoundFunction(x, y, k) \
|
||
|
|
y = ror( (x)^(y), SPECK_B); \
|
||
|
|
x = rol( (((x)^(k))-(y)), SPECK_A)
|
||
|
|
#endif
|