1 /* 2 * Copyright 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.wifi.hotspot2; 18 19 import android.os.Environment; 20 import android.util.Log; 21 22 import java.io.IOException; 23 import java.security.KeyStore; 24 import java.security.KeyStoreException; 25 import java.security.NoSuchAlgorithmException; 26 import java.security.cert.CertificateException; 27 import java.security.cert.X509Certificate; 28 import java.util.Set; 29 30 /** 31 * WFA Keystore 32 */ 33 public class WfaKeyStore { 34 private static final String TAG = "PasspointWfaKeyStore"; 35 // The WFA Root certs are checked in to /system/ca-certificates/cacerts_wfa 36 // The location on device is configured in the corresponding Android.mk 37 private static final String DEFAULT_WFA_CERT_DIR = 38 Environment.getRootDirectory() + "/etc/security/cacerts_wfa"; 39 40 private boolean mVerboseLoggingEnabled = false; 41 private KeyStore mKeyStore = null; 42 43 /** 44 * Loads the keystore with root certificates 45 */ load()46 public void load() { 47 if (mKeyStore != null) { 48 return; 49 } 50 int index = 0; 51 try { 52 mKeyStore = KeyStore.getInstance(KeyStore.getDefaultType()); 53 mKeyStore.load(null, null); 54 Set<X509Certificate> certs = WfaCertBuilder.loadCertsFromDisk(DEFAULT_WFA_CERT_DIR); 55 for (X509Certificate cert : certs) { 56 mKeyStore.setCertificateEntry(String.format("%d", index), cert); 57 index++; 58 } 59 if (index <= 0) { 60 Log.wtf(TAG, "No certs loaded"); 61 } 62 } catch (KeyStoreException | CertificateException | NoSuchAlgorithmException 63 | IOException e) { 64 e.printStackTrace(); 65 } 66 } 67 68 /** 69 * Returns the underlying keystore object 70 * @return KeyStore Underlying keystore object created 71 */ get()72 public KeyStore get() { 73 return mKeyStore; 74 } 75 } 76