removed unneeded byte[] copyOfRange

Author: dghgit

core/src/main/java/org/bouncycastle/pqc/crypto/mlkem/Poly.java

@@ -237,13 +237,14 @@ public byte[] toBytes()
         return r;
     }
 
-    public void fromBytes(byte[] inpBytes)
+    public void fromBytes(byte[] inpBytes, int inOff)
     {
         for (int i = 0; i < MLKEMEngine.KyberN / 2; ++i)
         {
-            int a0 = inpBytes[3 * i + 0] & 0xFF;
-            int a1 = inpBytes[3 * i + 1] & 0xFF;
-            int a2 = inpBytes[3 * i + 2] & 0xFF;
+            int index = inOff + (3 * i);
+            int a0 = inpBytes[index + 0] & 0xFF;
+            int a1 = inpBytes[index + 1] & 0xFF;
+            int a2 = inpBytes[index + 2] & 0xFF;
             coeffs[2 * i + 0] = (short)(((a0 >> 0) | (a1 << 8)) & 0xFFF);
             coeffs[2 * i + 1] = (short)(((a1 >> 4) | (a2 << 4)) & 0xFFF);
         }

core/src/main/java/org/bouncycastle/pqc/crypto/mlkem/PolyVec.java

@@ -1,7 +1,5 @@
 package org.bouncycastle.pqc.crypto.mlkem;
 
-import org.bouncycastle.util.Arrays;
-
 class PolyVec
 {
     Poly[] vec;
@@ -242,7 +240,7 @@ public void fromBytes(byte[] inputBytes)
     {
         for (int i = 0; i < kyberK; i++)
         {
-            this.getVectorIndex(i).fromBytes(Arrays.copyOfRange(inputBytes, i * MLKEMEngine.KyberPolyBytes, (i + 1) * MLKEMEngine.KyberPolyBytes));
+            this.getVectorIndex(i).fromBytes(inputBytes, i * MLKEMEngine.KyberPolyBytes);
         }
     }