+ if (numbits <= 0 || numbits > 64)
+ return;
+ iv = &(*ivec)[0];
+ c2l(iv, v0);
+ c2l(iv, v1);
+ if (enc) {
+ while (l >= (unsigned long)n) {
+ l -= n;
+ ti[0] = v0;
+ ti[1] = v1;
+ DES_encrypt1((DES_LONG *)ti, schedule, DES_ENCRYPT);
+ c2ln(in, d0, d1, n);
+ in += n;
+ d0 ^= ti[0];
+ d1 ^= ti[1];
+ l2cn(d0, d1, out, n);
+ out += n;
+ /*
+ * 30-08-94 - eay - changed because l>>32 and l<<32 are bad under
+ * gcc :-(
+ */
+ if (numbits == 32) {
+ v0 = v1;
+ v1 = d0;
+ } else if (numbits == 64) {
+ v0 = d0;
+ v1 = d1;
+ } else {
+#ifndef L_ENDIAN
+ iv = &ovec[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ l2c(d0, iv);
+ l2c(d1, iv);
+#else
+ sh[0] = v0, sh[1] = v1, sh[2] = d0, sh[3] = d1;
+#endif
+ if (rem == 0)
+ memmove(ovec, ovec + num, 8);
+ else
+ for (i = 0; i < 8; ++i)
+ ovec[i] = ovec[i + num] << rem |
+ ovec[i + num + 1] >> (8 - rem);
+#ifdef L_ENDIAN
+ v0 = sh[0], v1 = sh[1];
+#else
+ iv = &ovec[0];
+ c2l(iv, v0);
+ c2l(iv, v1);
+#endif
+ }
+ }
+ } else {
+ while (l >= (unsigned long)n) {
+ l -= n;
+ ti[0] = v0;
+ ti[1] = v1;
+ DES_encrypt1((DES_LONG *)ti, schedule, DES_ENCRYPT);
+ c2ln(in, d0, d1, n);
+ in += n;
+ /*
+ * 30-08-94 - eay - changed because l>>32 and l<<32 are bad under
+ * gcc :-(
+ */
+ if (numbits == 32) {
+ v0 = v1;
+ v1 = d0;
+ } else if (numbits == 64) {
+ v0 = d0;
+ v1 = d1;
+ } else {
+#ifndef L_ENDIAN
+ iv = &ovec[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ l2c(d0, iv);
+ l2c(d1, iv);
+#else
+ sh[0] = v0, sh[1] = v1, sh[2] = d0, sh[3] = d1;
+#endif
+ if (rem == 0)
+ memmove(ovec, ovec + num, 8);
+ else
+ for (i = 0; i < 8; ++i)
+ ovec[i] = ovec[i + num] << rem |
+ ovec[i + num + 1] >> (8 - rem);
+#ifdef L_ENDIAN
+ v0 = sh[0], v1 = sh[1];
+#else
+ iv = &ovec[0];
+ c2l(iv, v0);
+ c2l(iv, v1);
+#endif
+ }
+ d0 ^= ti[0];
+ d1 ^= ti[1];
+ l2cn(d0, d1, out, n);
+ out += n;
+ }
+ }
+ iv = &(*ivec)[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ v0 = v1 = d0 = d1 = ti[0] = ti[1] = 0;
+}