Add decompiled APK source code (JADX)

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

decompiled/sources/com/google/android/gms/internal/ads/zzgpp.java

@@ -0,0 +1,24 @@
+package com.google.android.gms.internal.ads;
+
+/* loaded from: classes3.dex */
+public final class zzgpp {
+    public static byte[] zza(byte[] bArr) {
+        if (bArr.length != 16) {
+            throw new IllegalArgumentException("value must be a block.");
+        }
+        byte[] bArr2 = new byte[16];
+        int i = 0;
+        while (i < 16) {
+            int i2 = i + 1;
+            byte b = bArr[i];
+            byte b2 = (byte) ((b + b) & 254);
+            bArr2[i] = b2;
+            if (i < 15) {
+                bArr2[i] = (byte) (((bArr[i2] >> 7) & 1) | b2);
+            }
+            i = i2;
+        }
+        bArr2[15] = (byte) (((byte) ((bArr[0] >> 7) & 135)) ^ bArr2[15]);
+        return bArr2;
+    }
+}