Kasumi cipher fixed round reduction

crocs-muni · Apr 13, 2018 · caca7f9 · caca7f9
1 parent 3a8f2be
commit caca7f9
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/streams/block/ciphers/kasumi/kasumi.cpp b/streams/block/ciphers/kasumi/kasumi.cpp
@@ -208,12 +208,12 @@
             R = FI(R ^ K[4], K[5]) ^ L;
             L = FI(L ^ K[6], K[7]) ^ R;
 
-            if (j +1 == rounds)
-                break;
-
             R = B2 ^= R;
             L = B3 ^= L;
 
+            if (j + 1 == rounds)
+                break;
+
             R = FI(R ^ K[10], K[11]) ^ L;
             L = FI(L ^ K[12], K[13]) ^ R;
             R = FI(R ^ K[14], K[15]) ^ L;
@@ -257,12 +257,12 @@
            L ^= (rotl<1>(R) & K[8]);
            R ^= (rotl<1>(L) | K[9]);
 
-           if (j + 1 == rounds)
-               break;
-
            R = B0 ^= R;
            L = B1 ^= L;
 
+           if (j + 1 == rounds)
+               break;
+
            L ^= (rotl<1>(R) & K[0]);
            R ^= (rotl<1>(L) | K[1]);