1 files changed, 0 insertions, 54 deletions
diff --git a/app/src/main/java/com/wireguard/android/widget/KeyInputFilter.java b/app/src/main/java/com/wireguard/android/widget/KeyInputFilter.java
deleted file mode 100644
index 79572aa3..00000000
--- a/app/src/main/java/com/wireguard/android/widget/KeyInputFilter.java
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package com.wireguard.android.widget;
-
-import androidx.annotation.Nullable;
-import android.text.InputFilter;
-import android.text.SpannableStringBuilder;
-import android.text.Spanned;
-
-import com.wireguard.crypto.Key;
-
-/**
- * InputFilter for entering WireGuard private/public keys encoded with base64.
- */
-
-public class KeyInputFilter implements InputFilter {
-    private static boolean isAllowed(final char c) {
-        return Character.isLetterOrDigit(c) || c == '+' || c == '/';
-    }
-
-    public static InputFilter newInstance() {
-        return new KeyInputFilter();
-    }
-
-    @Nullable
-    @Override
-    public CharSequence filter(final CharSequence source,
-                               final int sStart, final int sEnd,
-                               final Spanned dest,
-                               final int dStart, final int dEnd) {
-        SpannableStringBuilder replacement = null;
-        int rIndex = 0;
-        final int dLength = dest.length();
-        for (int sIndex = sStart; sIndex < sEnd; ++sIndex) {
-            final char c = source.charAt(sIndex);
-            final int dIndex = dStart + (sIndex - sStart);
-            // Restrict characters to the base64 character set.
-            // Ensure adding this character does not push the length over the limit.
-            if (((dIndex + 1 < Key.Format.BASE64.getLength() && isAllowed(c)) ||
-                    (dIndex + 1 == Key.Format.BASE64.getLength() && c == '=')) &&
-                    dLength + (sIndex - sStart) < Key.Format.BASE64.getLength()) {
-                ++rIndex;
-            } else {
-                if (replacement == null)
-                    replacement = new SpannableStringBuilder(source, sStart, sEnd);
-                replacement.delete(rIndex, rIndex + 1);
-            }
-        }
-        return replacement;
-    }
-}