1 /* 2 * Copyright (C) 2009 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 android.webkit; 18 19 import com.android.org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers; 20 import com.android.org.bouncycastle.asn1.x509.AlgorithmIdentifier; 21 import com.android.org.bouncycastle.jce.netscape.NetscapeCertRequest; 22 import com.android.org.bouncycastle.util.encoders.Base64; 23 24 import android.content.Context; 25 import android.security.Credentials; 26 import android.security.KeyChain; 27 import android.util.Log; 28 29 import java.security.KeyPair; 30 import java.security.KeyPairGenerator; 31 import java.util.HashMap; 32 33 final class CertTool { 34 private static final String LOGTAG = "CertTool"; 35 36 private static final AlgorithmIdentifier MD5_WITH_RSA = 37 new AlgorithmIdentifier(PKCSObjectIdentifiers.md5WithRSAEncryption); 38 39 private static HashMap<String, String> sCertificateTypeMap; 40 static { 41 sCertificateTypeMap = new HashMap<String, String>(); 42 sCertificateTypeMap.put("application/x-x509-ca-cert", KeyChain.EXTRA_CERTIFICATE); 43 sCertificateTypeMap.put("application/x-x509-user-cert", KeyChain.EXTRA_CERTIFICATE); 44 sCertificateTypeMap.put("application/x-pkcs12", KeyChain.EXTRA_PKCS12); 45 } 46 47 static String[] getKeyStrengthList() { 48 return new String[] {"High Grade", "Medium Grade"}; 49 } 50 51 static String getSignedPublicKey(Context context, int index, String challenge) { 52 try { 53 KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA"); 54 generator.initialize((index == 0) ? 2048 : 1024); 55 KeyPair pair = generator.genKeyPair(); 56 57 NetscapeCertRequest request = new NetscapeCertRequest(challenge, 58 MD5_WITH_RSA, pair.getPublic()); 59 request.sign(pair.getPrivate()); 60 byte[] signed = request.toASN1Object().getDEREncoded(); 61 62 Credentials.getInstance().install(context, pair); 63 return new String(Base64.encode(signed)); 64 } catch (Exception e) { 65 Log.w(LOGTAG, e); 66 } 67 return null; 68 } 69 70 static void addCertificate(Context context, String type, byte[] value) { 71 Credentials.getInstance().install(context, type, value); 72 } 73 74 static String getCertType(String mimeType) { 75 return sCertificateTypeMap.get(mimeType); 76 } 77 78 private CertTool() {} 79 } 80
