1 files changed, 0 insertions, 121 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/utils/iab/Security.java b/app/src/main/kotlin/com/pitchedapps/frost/utils/iab/Security.java
deleted file mode 100644
index ba10e695..00000000
--- a/app/src/main/kotlin/com/pitchedapps/frost/utils/iab/Security.java
+++ /dev/null
@@ -1,121 +0,0 @@
-/* Copyright (c) 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.pitchedapps.frost.utils.iab;
-
-import android.text.TextUtils;
-import android.util.Base64;
-import android.util.Log;
-
-import java.security.InvalidKeyException;
-import java.security.KeyFactory;
-import java.security.NoSuchAlgorithmException;
-import java.security.PublicKey;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.security.spec.InvalidKeySpecException;
-import java.security.spec.X509EncodedKeySpec;
-
-/**
- * Security-related methods. For a secure implementation, all of this code
- * should be implemented on a server that communicates with the
- * application on the device. For the sake of simplicity and clarity of this
- * example, this code is included here and is executed on the device. If you
- * must verify the purchases on the phone, you should obfuscate this code to
- * make it harder for an attacker to replace the code with stubs that treat all
- * purchases as verified.
- */
-public class Security {
-    private static final String TAG = "IABUtil/Security";
-
-    private static final String KEY_FACTORY_ALGORITHM = "RSA";
-    private static final String SIGNATURE_ALGORITHM = "SHA1withRSA";
-
-    /**
-     * Verifies that the data was signed with the given signature, and returns
-     * the verified purchase. The data is in JSON format and signed
-     * with a private key. The data also contains the {@link PurchaseState}
-     * and product ID of the purchase.
-     * @param base64PublicKey the base64-encoded public key to use for verifying.
-     * @param signedData the signed JSON string (signed, not encrypted)
-     * @param signature the signature for the data, signed with the private key
-     */
-    public static boolean verifyPurchase(String base64PublicKey, String signedData, String signature) {
-        if (TextUtils.isEmpty(signedData) || TextUtils.isEmpty(base64PublicKey) ||
-                TextUtils.isEmpty(signature)) {
-            Log.e(TAG, "Purchase verification failed: missing data.");
-            return false;
-        }
-
-        PublicKey key = Security.generatePublicKey(base64PublicKey);
-        return Security.verify(key, signedData, signature);
-    }
-
-    /**
-     * Generates a PublicKey instance from a string containing the
-     * Base64-encoded public key.
-     *
-     * @param encodedPublicKey Base64-encoded public key
-     * @throws IllegalArgumentException if encodedPublicKey is invalid
-     */
-    public static PublicKey generatePublicKey(String encodedPublicKey) {
-        try {
-            byte[] decodedKey = Base64.decode(encodedPublicKey, Base64.DEFAULT);
-            KeyFactory keyFactory = KeyFactory.getInstance(KEY_FACTORY_ALGORITHM);
-            return keyFactory.generatePublic(new X509EncodedKeySpec(decodedKey));
-        } catch (NoSuchAlgorithmException e) {
-            throw new RuntimeException(e);
-        } catch (InvalidKeySpecException e) {
-            Log.e(TAG, "Invalid key specification.");
-            throw new IllegalArgumentException(e);
-        }
-    }
-
-    /**
-     * Verifies that the signature from the server matches the computed
-     * signature on the data.  Returns true if the data is correctly signed.
-     *
-     * @param publicKey public key associated with the developer account
-     * @param signedData signed data from server
-     * @param signature server signature
-     * @return true if the data and signature match
-     */
-    public static boolean verify(PublicKey publicKey, String signedData, String signature) {
-        byte[] signatureBytes;
-        try {
-            signatureBytes = Base64.decode(signature, Base64.DEFAULT);
-        } catch (IllegalArgumentException e) {
-            Log.e(TAG, "Base64 decoding failed.");
-            return false;
-        }
-        try {
-            Signature sig = Signature.getInstance(SIGNATURE_ALGORITHM);
-            sig.initVerify(publicKey);
-            sig.update(signedData.getBytes());
-            if (!sig.verify(signatureBytes)) {
-                Log.e(TAG, "Signature verification failed.");
-                return false;
-            }
-            return true;
-        } catch (NoSuchAlgorithmException e) {
-            Log.e(TAG, "NoSuchAlgorithmException.");
-        } catch (InvalidKeyException e) {
-            Log.e(TAG, "Invalid key specification.");
-        } catch (SignatureException e) {
-            Log.e(TAG, "Signature exception.");
-        }
-        return false;
-    }
-}