- {
- register DES_LONG l,r,t,u;
-#ifdef DES_PTR
- register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans;
-#endif
-#ifndef DES_UNROLL
- register int i;
-#endif
- register DES_LONG *s;
-
- r=data[0];
- l=data[1];
-
- /* Things have been modified so that the initial rotate is
- * done outside the loop. This required the
- * DES_SPtrans values in sp.h to be rotated 1 bit to the right.
- * One perl script later and things have a 5% speed up on a sparc2.
- * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
- * for pointing this out. */
- /* clear the top bits on machines with 8byte longs */
- r=ROTATE(r,29)&0xffffffffL;
- l=ROTATE(l,29)&0xffffffffL;
-
- s=ks->ks->deslong;
- /* I don't know if it is worth the effort of loop unrolling the
- * inner loop */
- if (enc)
- {
-#ifdef DES_UNROLL
- D_ENCRYPT(l,r, 0); /* 1 */
- D_ENCRYPT(r,l, 2); /* 2 */
- D_ENCRYPT(l,r, 4); /* 3 */
- D_ENCRYPT(r,l, 6); /* 4 */
- D_ENCRYPT(l,r, 8); /* 5 */
- D_ENCRYPT(r,l,10); /* 6 */
- D_ENCRYPT(l,r,12); /* 7 */
- D_ENCRYPT(r,l,14); /* 8 */
- D_ENCRYPT(l,r,16); /* 9 */
- D_ENCRYPT(r,l,18); /* 10 */
- D_ENCRYPT(l,r,20); /* 11 */
- D_ENCRYPT(r,l,22); /* 12 */
- D_ENCRYPT(l,r,24); /* 13 */
- D_ENCRYPT(r,l,26); /* 14 */
- D_ENCRYPT(l,r,28); /* 15 */
- D_ENCRYPT(r,l,30); /* 16 */
-#else
- for (i=0; i<32; i+=4)
- {
- D_ENCRYPT(l,r,i+0); /* 1 */
- D_ENCRYPT(r,l,i+2); /* 2 */
- }
-#endif
- }
- else
- {
-#ifdef DES_UNROLL
- D_ENCRYPT(l,r,30); /* 16 */
- D_ENCRYPT(r,l,28); /* 15 */
- D_ENCRYPT(l,r,26); /* 14 */
- D_ENCRYPT(r,l,24); /* 13 */
- D_ENCRYPT(l,r,22); /* 12 */
- D_ENCRYPT(r,l,20); /* 11 */
- D_ENCRYPT(l,r,18); /* 10 */
- D_ENCRYPT(r,l,16); /* 9 */
- D_ENCRYPT(l,r,14); /* 8 */
- D_ENCRYPT(r,l,12); /* 7 */
- D_ENCRYPT(l,r,10); /* 6 */
- D_ENCRYPT(r,l, 8); /* 5 */
- D_ENCRYPT(l,r, 6); /* 4 */
- D_ENCRYPT(r,l, 4); /* 3 */
- D_ENCRYPT(l,r, 2); /* 2 */
- D_ENCRYPT(r,l, 0); /* 1 */
-#else
- for (i=30; i>0; i-=4)
- {
- D_ENCRYPT(l,r,i-0); /* 16 */
- D_ENCRYPT(r,l,i-2); /* 15 */
- }
-#endif
- }
- /* rotate and clear the top bits on machines with 8byte longs */
- data[0]=ROTATE(l,3)&0xffffffffL;
- data[1]=ROTATE(r,3)&0xffffffffL;
- l=r=t=u=0;
- }
+{
+ register DES_LONG l, r, t, u;
+ register DES_LONG *s;
+
+ r = data[0];
+ l = data[1];
+
+ /*
+ * Things have been modified so that the initial rotate is done outside
+ * the loop. This required the DES_SPtrans values in sp.h to be rotated
+ * 1 bit to the right. One perl script later and things have a 5% speed
+ * up on a sparc2. Thanks to Richard Outerbridge
+ * <71755.204@CompuServe.COM> for pointing this out.
+ */
+ /* clear the top bits on machines with 8byte longs */
+ r = ROTATE(r, 29) & 0xffffffffL;
+ l = ROTATE(l, 29) & 0xffffffffL;
+
+ s = ks->ks->deslong;
+ /*
+ * I don't know if it is worth the effort of loop unrolling the inner
+ * loop
+ */
+ if (enc) {
+ D_ENCRYPT(l, r, 0); /* 1 */
+ D_ENCRYPT(r, l, 2); /* 2 */
+ D_ENCRYPT(l, r, 4); /* 3 */
+ D_ENCRYPT(r, l, 6); /* 4 */
+ D_ENCRYPT(l, r, 8); /* 5 */
+ D_ENCRYPT(r, l, 10); /* 6 */
+ D_ENCRYPT(l, r, 12); /* 7 */
+ D_ENCRYPT(r, l, 14); /* 8 */
+ D_ENCRYPT(l, r, 16); /* 9 */
+ D_ENCRYPT(r, l, 18); /* 10 */
+ D_ENCRYPT(l, r, 20); /* 11 */
+ D_ENCRYPT(r, l, 22); /* 12 */
+ D_ENCRYPT(l, r, 24); /* 13 */
+ D_ENCRYPT(r, l, 26); /* 14 */
+ D_ENCRYPT(l, r, 28); /* 15 */
+ D_ENCRYPT(r, l, 30); /* 16 */
+ } else {
+ D_ENCRYPT(l, r, 30); /* 16 */
+ D_ENCRYPT(r, l, 28); /* 15 */
+ D_ENCRYPT(l, r, 26); /* 14 */
+ D_ENCRYPT(r, l, 24); /* 13 */
+ D_ENCRYPT(l, r, 22); /* 12 */
+ D_ENCRYPT(r, l, 20); /* 11 */
+ D_ENCRYPT(l, r, 18); /* 10 */
+ D_ENCRYPT(r, l, 16); /* 9 */
+ D_ENCRYPT(l, r, 14); /* 8 */
+ D_ENCRYPT(r, l, 12); /* 7 */
+ D_ENCRYPT(l, r, 10); /* 6 */
+ D_ENCRYPT(r, l, 8); /* 5 */
+ D_ENCRYPT(l, r, 6); /* 4 */
+ D_ENCRYPT(r, l, 4); /* 3 */
+ D_ENCRYPT(l, r, 2); /* 2 */
+ D_ENCRYPT(r, l, 0); /* 1 */
+ }
+ /* rotate and clear the top bits on machines with 8byte longs */
+ data[0] = ROTATE(l, 3) & 0xffffffffL;
+ data[1] = ROTATE(r, 3) & 0xffffffffL;
+ l = r = t = u = 0;
+}