CertTool.java revision c7939b1750ba98ab745110a138209d8b981fdc21 
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
17package android.webkit;
18
19import com.android.org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
20import com.android.org.bouncycastle.asn1.x509.AlgorithmIdentifier;
21import com.android.org.bouncycastle.jce.netscape.NetscapeCertRequest;
22import com.android.org.bouncycastle.util.encoders.Base64;
23
24import android.content.ActivityNotFoundException;
25import android.content.Context;
26import android.content.Intent;
27import android.security.Credentials;
28import android.util.Log;
29
30import java.security.KeyPair;
31import java.security.KeyPairGenerator;
32import java.util.HashMap;
33
34class CertTool {
35    private static final String LOGTAG = "CertTool";
36
37    private static final AlgorithmIdentifier MD5_WITH_RSA =
38            new AlgorithmIdentifier(PKCSObjectIdentifiers.md5WithRSAEncryption);
39
40    static final String CERT = Credentials.CERTIFICATE;
41    static final String PKCS12 = Credentials.PKCS12;
42
43    private static HashMap<String, String> sCertificateTypeMap;
44    static {
45        sCertificateTypeMap = new HashMap<String, String>();
46        sCertificateTypeMap.put("application/x-x509-ca-cert", CertTool.CERT);
47        sCertificateTypeMap.put("application/x-x509-user-cert", CertTool.CERT);
48        sCertificateTypeMap.put("application/x-pkcs12", CertTool.PKCS12);
49    }
50
51    static String[] getKeyStrengthList() {
52        return new String[] {"High Grade", "Medium Grade"};
53    }
54
55    static String getSignedPublicKey(Context context, int index, String challenge) {
56        try {
57            KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA");
58            generator.initialize((index == 0) ? 2048 : 1024);
59            KeyPair pair = generator.genKeyPair();
60
61            NetscapeCertRequest request = new NetscapeCertRequest(challenge,
62                    MD5_WITH_RSA, pair.getPublic());
63            request.sign(pair.getPrivate());
64            byte[] signed = request.toASN1Object().getDEREncoded();
65
66            Credentials.getInstance().install(context, pair);
67            return new String(Base64.encode(signed));
68        } catch (Exception e) {
69            Log.w(LOGTAG, e);
70        }
71        return null;
72    }
73
74    static void addCertificate(Context context, String type, byte[] value) {
75        Credentials.getInstance().install(context, type, value);
76    }
77
78    static String getCertType(String mimeType) {
79        return sCertificateTypeMap.get(mimeType);
80  }
81
82    private CertTool() {}
83}
84