twofish.cpp File Reference

#include "pch.h"
#include "twofish.h"
#include "secblock.h"
#include "misc.h"

Include dependency graph for twofish.cpp:

Go to the source code of this file.

Macros
#define	Q(a, b, c, d, t)   q[a][GETBYTE(t,0)] ^ (q[b][GETBYTE(t,1)] << 8) ^ (q[c][GETBYTE(t,2)] << 16) ^ (q[d][GETBYTE(t,3)] << 24)
#define	G1(x)   (m_s[0*256+GETBYTE(x,0)] ^ m_s[1*256+GETBYTE(x,1)] ^ m_s[2*256+GETBYTE(x,2)] ^ m_s[3*256+GETBYTE(x,3)])
#define	G2(x)   (m_s[0*256+GETBYTE(x,3)] ^ m_s[1*256+GETBYTE(x,0)] ^ m_s[2*256+GETBYTE(x,1)] ^ m_s[3*256+GETBYTE(x,2)])
#define	ENCROUND(n, a, b, c, d)
#define	ENCCYCLE(n)
#define	DECROUND(n, a, b, c, d)
#define	DECCYCLE(n)

Typedefs
typedef BlockGetAndPut< word32, LittleEndian >	Block

Macro Definition Documentation

#define DECCYCLE

(

n

)

Value:

DECROUND (2 * (n) + 1, c, d, a, b); \
	DECROUND (2 * (n), a, b, c, d)

Definition at line 105 of file twofish.cpp.

#define DECROUND	(		n,
			a,
			b,
			c,
			d
	)

Value:

x = G1 (a); y = G2 (b); \
	x += y; y += x; \
        (d) ^= y + k[2 * (n) + 1]; \
        (d) = rotrFixed(d, 1); \
        (c) = rotlFixed(c, 1); \
        (c) ^= (x + k[2 * (n)])

Definition at line 97 of file twofish.cpp.

#define ENCCYCLE

(

n

)

Value:

ENCROUND (2 * (n), a, b, c, d); \
	ENCROUND (2 * (n) + 1, c, d, a, b)

Definition at line 93 of file twofish.cpp.

#define ENCROUND	(		n,
			a,
			b,
			c,
			d
	)

Value:

x = G1 (a); y = G2 (b); \
	x += y; y += x + k[2 * (n) + 1]; \
        (c) ^= x + k[2 * (n)]; \
        (c) = rotrFixed(c, 1); \
        (d) = rotlFixed(d, 1) ^ y

Definition at line 86 of file twofish.cpp.

#define G1

(

x

)

(m_s[0*256+GETBYTE(x,0)] ^ m_s[1*256+GETBYTE(x,1)] ^ m_s[2*256+GETBYTE(x,2)] ^ m_s[3*256+GETBYTE(x,3)])

Definition at line 83 of file twofish.cpp.

#define G2

(

x

)

(m_s[0*256+GETBYTE(x,3)] ^ m_s[1*256+GETBYTE(x,0)] ^ m_s[2*256+GETBYTE(x,1)] ^ m_s[3*256+GETBYTE(x,2)])

Definition at line 84 of file twofish.cpp.

#define Q	(		a,
			b,
			c,
			d,
			t
	)		q[a][GETBYTE(t,0)] ^ (q[b][GETBYTE(t,1)] << 8) ^ (q[c][GETBYTE(t,2)] << 16) ^ (q[d][GETBYTE(t,3)] << 24)

Typedef Documentation

typedef BlockGetAndPut<word32, LittleEndian> Block

Definition at line 109 of file twofish.cpp.