#include <linux/compiler.h>#include <linux/export.h>#include <linux/cryptohash.h> /* F, G and H are basic MD4 functions: selection, majority, parity */#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))#define G(x, y, z) (((x) & (y)) + (((x) ^ (y)) & (z)))#define H(x, y, z) ((x) ^ (y) ^ (z)) /* * The generic round function.  The application is so specific that * we don't bother protecting all the arguments with parens, as is generally * good macro practice, in favor of extra legibility. * Rotation is separate from addition to prevent recomputation */#define ROUND(f, a, b, c, d, x, s)	\	(a += f(b, c, d) + x, a = (a << s) | (a >> (32 - s)))#define K1 0#define K2 013240474631UL#define K3 015666365641UL /* * Basic cut-down MD4 transform.  Returns only 32 bits of result. */__u32 half_md4_transform(__u32 buf[4], __u32 const in[8]){	__u32 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; 	/* Round 1 */	ROUND(F, a, b, c, d, in[0] + K1,  3);	ROUND(F, d, a, b, c, in[1] + K1,  7);	ROUND(F, c, d, a, b, in[2] + K1, 11);	ROUND(F, b, c, d, a, in[3] + K1, 19);	ROUND(F, a, b, c, d, in[4] + K1,  3);	ROUND(F, d, a, b, c, in[5] + K1,  7);	ROUND(F, c, d, a, b, in[6] + K1, 11);	ROUND(F, b, c, d, a, in[7] + K1, 19); 	/* Round 2 */	ROUND(G, a, b, c, d, in[1] + K2,  3);	ROUND(G, d, a, b, c, in[3] + K2,  5);	ROUND(G, c, d, a, b, in[5] + K2,  9);	ROUND(G, b, c, d, a, in[7] + K2, 13);	ROUND(G, a, b, c, d, in[0] + K2,  3);	ROUND(G, d, a, b, c, in[2] + K2,  5);	ROUND(G, c, d, a, b, in[4] + K2,  9);	ROUND(G, b, c, d, a, in[6] + K2, 13); 	/* Round 3 */	ROUND(H, a, b, c, d, in[3] + K3,  3);	ROUND(H, d, a, b, c, in[7] + K3,  9);	ROUND(H, c, d, a, b, in[2] + K3, 11);	ROUND(H, b, c, d, a, in[6] + K3, 15);	ROUND(H, a, b, c, d, in[1] + K3,  3);	ROUND(H, d, a, b, c, in[5] + K3,  9);	ROUND(H, c, d, a, b, in[0] + K3, 11);	ROUND(H, b, c, d, a, in[4] + K3, 15); 	buf[0] += a;	buf[1] += b;	buf[2] += c;	buf[3] += d; 	return buf[1]; /* "most hashed" word */}EXPORT_SYMBOL(half_md4_transform);