1 files changed, 0 insertions, 69 deletions
diff --git a/security/FingerprintDialog/Application/src/main/java/com/example/android/fingerprintdialog/server/StoreBackendImpl.java b/security/FingerprintDialog/Application/src/main/java/com/example/android/fingerprintdialog/server/StoreBackendImpl.java
deleted file mode 100644
index 986479e0..00000000
--- a/security/FingerprintDialog/Application/src/main/java/com/example/android/fingerprintdialog/server/StoreBackendImpl.java
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * 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.example.android.fingerprintdialog.server;
-
-
-import java.security.InvalidKeyException;
-import java.security.NoSuchAlgorithmException;
-import java.security.PublicKey;
-import java.security.Signature;
-import java.security.SignatureException;
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * A fake backend implementation of {@link StoreBackend}.
- */
-public class StoreBackendImpl implements StoreBackend {
-
-    private final Map<String, PublicKey> mPublicKeys = new HashMap<>();
-
-    @Override
-    public boolean verify(Transaction transaction, byte[] transactionSignature) {
-        try {
-            PublicKey publicKey = mPublicKeys.get(transaction.getUserId());
-            Signature verificationFunction = Signature.getInstance("SHA256withECDSA");
-            verificationFunction.initVerify(publicKey);
-            verificationFunction.update(transaction.toByteArray());
-            if (verificationFunction.verify(transactionSignature)) {
-                // Transaction is verified with the public key associated with the user
-                // Do some post purchase processing in the server
-                return true;
-            }
-        } catch (NoSuchAlgorithmException | InvalidKeyException | SignatureException e) {
-            // In a real world, better to send some error message to the user
-        }
-        return false;
-    }
-
-    @Override
-    public boolean verify(Transaction transaction, String password) {
-        // As this is just a sample, we always assume that the password is right.
-        return true;
-    }
-
-    @Override
-    public boolean enroll(String userId, String password, PublicKey publicKey) {
-        if (publicKey != null) {
-            mPublicKeys.put(userId, publicKey);
-        }
-        // We just ignore the provided password here, but in real life, it is registered to the
-        // backend.
-        return true;
-    }
-
-}