Java example source code file (ComodoHacker.java)

This example Java source code file (ComodoHacker.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

begin, bytearrayinputstream, certificate, certificate\-\-\-\-\-\\n, end, exception, kgmpide5otkgrw50cnvzdc5uzxqgtgltaxrlzde6mdgga1ueaxmxrw50cnvzdc5u\\n, net, network, rsa, security, ssl, string, tm90yxigum9vdcbdqtegmb4gcsqgsib3dqejaryraw5mb0bkawdpbm90yxiubmww\\n, util, vvmxfdasbgnvbaotc0vudhj1c3qubmv0mtswoqydvqqlezj3d3cuzw50cnvzdc5u\\n, x509certificate, x509trustmanager, zxqvq1btigluy29ycc4gynkgcmvmliaobgltaxrzigxpywiuktelmcmga1uecxmc\\n

The ComodoHacker.java Java example source code

/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 7123519
 * @summary Problem with java/classes_security
 * @run main/othervm ComodoHacker PKIX
 * @run main/othervm ComodoHacker SunX509
 */

import java.net.*;
import java.util.*;
import java.io.*;
import javax.net.ssl.*;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.security.cert.CertificateException;
import java.security.spec.*;
import java.security.interfaces.*;

public class ComodoHacker {
    // DigiNotar Root CA, untrusted root certificate
    static String trustedCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIIE2DCCBEGgAwIBAgIEN0rSQzANBgkqhkiG9w0BAQUFADCBwzELMAkGA1UEBhMC\n" +
        "VVMxFDASBgNVBAoTC0VudHJ1c3QubmV0MTswOQYDVQQLEzJ3d3cuZW50cnVzdC5u\n" +
        "ZXQvQ1BTIGluY29ycC4gYnkgcmVmLiAobGltaXRzIGxpYWIuKTElMCMGA1UECxMc\n" +
        "KGMpIDE5OTkgRW50cnVzdC5uZXQgTGltaXRlZDE6MDgGA1UEAxMxRW50cnVzdC5u\n" +
        "ZXQgU2VjdXJlIFNlcnZlciBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAeFw05OTA1\n" +
        "MjUxNjA5NDBaFw0xOTA1MjUxNjM5NDBaMIHDMQswCQYDVQQGEwJVUzEUMBIGA1UE\n" +
        "ChMLRW50cnVzdC5uZXQxOzA5BgNVBAsTMnd3dy5lbnRydXN0Lm5ldC9DUFMgaW5j\n" +
        "b3JwLiBieSByZWYuIChsaW1pdHMgbGlhYi4pMSUwIwYDVQQLExwoYykgMTk5OSBF\n" +
        "bnRydXN0Lm5ldCBMaW1pdGVkMTowOAYDVQQDEzFFbnRydXN0Lm5ldCBTZWN1cmUg\n" +
        "U2VydmVyIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGdMA0GCSqGSIb3DQEBAQUA\n" +
        "A4GLADCBhwKBgQDNKIM0VBuJ8w+vN5Ex/68xYMmo6LIQaO2f55M28Qpku0f1BBc/\n" +
        "I0dNxScZgSYMVHINiC3ZH5oSn7yzcdOAGT9HZnuMNSjSuQrfJNqc1lB5gXpa0zf3\n" +
        "wkrYKZImZNHkmGw6AIr1NJtl+O3jEP/9uElY3KDegjlrgbEWGWG5VLbmQwIBA6OC\n" +
        "AdcwggHTMBEGCWCGSAGG+EIBAQQEAwIABzCCARkGA1UdHwSCARAwggEMMIHeoIHb\n" +
        "oIHYpIHVMIHSMQswCQYDVQQGEwJVUzEUMBIGA1UEChMLRW50cnVzdC5uZXQxOzA5\n" +
        "BgNVBAsTMnd3dy5lbnRydXN0Lm5ldC9DUFMgaW5jb3JwLiBieSByZWYuIChsaW1p\n" +
        "dHMgbGlhYi4pMSUwIwYDVQQLExwoYykgMTk5OSBFbnRydXN0Lm5ldCBMaW1pdGVk\n" +
        "MTowOAYDVQQDEzFFbnRydXN0Lm5ldCBTZWN1cmUgU2VydmVyIENlcnRpZmljYXRp\n" +
        "b24gQXV0aG9yaXR5MQ0wCwYDVQQDEwRDUkwxMCmgJ6AlhiNodHRwOi8vd3d3LmVu\n" +
        "dHJ1c3QubmV0L0NSTC9uZXQxLmNybDArBgNVHRAEJDAigA8xOTk5MDUyNTE2MDk0\n" +
        "MFqBDzIwMTkwNTI1MTYwOTQwWjALBgNVHQ8EBAMCAQYwHwYDVR0jBBgwFoAU8Bdi\n" +
        "E1U9s/8KAGv7UISX8+1i0BowHQYDVR0OBBYEFPAXYhNVPbP/CgBr+1CEl/PtYtAa\n" +
        "MAwGA1UdEwQFMAMBAf8wGQYJKoZIhvZ9B0EABAwwChsEVjQuMAMCBJAwDQYJKoZI\n" +
        "hvcNAQEFBQADgYEAkNwwAvpkdMKnCqV8IY00F6j7Rw7/JXyNEwr75Ji174z4xRAN\n" +
        "95K+8cPV1ZVqBLssziY2ZcgxxufuP+NXdYR6Ee9GTxj005i7qIcyunL2POI9n9cd\n" +
        "2cNgQ4xYDiKWL2KjLB+6rQXvqzJ4h6BUcxm1XAX5Uj5tLUUL9wqT6u0G+bI=\n" +
        "-----END CERTIFICATE-----";

    // DigiNotar Root CA, untrusted cross-certificate
    static String untrustedCrossCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIIFSDCCBLGgAwIBAgIERpwsrzANBgkqhkiG9w0BAQUFADCBwzELMAkGA1UEBhMC\n" +
        "VVMxFDASBgNVBAoTC0VudHJ1c3QubmV0MTswOQYDVQQLEzJ3d3cuZW50cnVzdC5u\n" +
        "ZXQvQ1BTIGluY29ycC4gYnkgcmVmLiAobGltaXRzIGxpYWIuKTElMCMGA1UECxMc\n" +
        "KGMpIDE5OTkgRW50cnVzdC5uZXQgTGltaXRlZDE6MDgGA1UEAxMxRW50cnVzdC5u\n" +
        "ZXQgU2VjdXJlIFNlcnZlciBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTAeFw0wNzA3\n" +
        "MjYxNTU3MzlaFw0xMzA4MjYxNjI3MzlaMF8xCzAJBgNVBAYTAk5MMRIwEAYDVQQK\n" +
        "EwlEaWdpTm90YXIxGjAYBgNVBAMTEURpZ2lOb3RhciBSb290IENBMSAwHgYJKoZI\n" +
        "hvcNAQkBFhFpbmZvQGRpZ2lub3Rhci5ubDCCAiIwDQYJKoZIhvcNAQEBBQADggIP\n" +
        "ADCCAgoCggIBAKywWMEAvdghCAsrmv5uVjAFnxt3kBBBXMMNhxF3joHxynzpjGrt\n" +
        "OHQ1u9rf+bvACTe0lnOBfTMamDn3k2+Vfz25sXWHulFI6ItwPpUExdi2wxbZiLCx\n" +
        "hx1w2oa0DxSLes8Q0XQ2ohJ7d4ZKeeZ73wIRaKVOhq40WJskE3hWIiUeAYtLUXH7\n" +
        "gsxZlmmIWmhTxbkNAjfLS7xmSpB+KgsFB+0WX1WQddhGyRuD4gi+8SPMmR3WKg+D\n" +
        "IBVYJ4Iu+uIiwkmxuQGBap1tnUB3aHZOISpthECFTnaZfILz87cCWdQmARuO361T\n" +
        "BtGuGN3isjrL14g4jqxbKbkZ05j5GAPPSIKGZgsbaQ/J6ziIeiYaBUyS1yTUlvKs\n" +
        "Ui2jR9VS9j/+zoQGcKaqPqLytlY0GFei5IFt58rwatPHkWsCg0F8Fe9rmmRe49A8\n" +
        "5bHre12G+8vmd0nNo2Xc97mcuOQLX5PPzDAaMhzOHGOVpfnq4XSLnukrqTB7oBgf\n" +
        "DhgL5Vup09FsHgdnj5FLqYq80maqkwGIspH6MVzVpsFSCAnNCmOi0yKm6KHZOQaX\n" +
        "9W6NApCMFHs/gM0bnLrEWHIjr7ZWn8Z6QjMpBz+CyeYfBQ3NTCg2i9PIPhzGiO9e\n" +
        "7olk6R3r2ol+MqZp0d3MiJ/R0MlmIdwGZ8WUepptYkx9zOBkgLKeR46jAgMBAAGj\n" +
        "ggEmMIIBIjASBgNVHRMBAf8ECDAGAQH/AgEBMCcGA1UdJQQgMB4GCCsGAQUFBwMB\n" +
        "BggrBgEFBQcDAgYIKwYBBQUHAwQwEQYDVR0gBAowCDAGBgRVHSAAMDMGCCsGAQUF\n" +
        "BwEBBCcwJTAjBggrBgEFBQcwAYYXaHR0cDovL29jc3AuZW50cnVzdC5uZXQwMwYD\n" +
        "VR0fBCwwKjAooCagJIYiaHR0cDovL2NybC5lbnRydXN0Lm5ldC9zZXJ2ZXIxLmNy\n" +
        "bDAdBgNVHQ4EFgQUiGi/4I41xDs4a2L3KDuEgcgM100wCwYDVR0PBAQDAgEGMB8G\n" +
        "A1UdIwQYMBaAFPAXYhNVPbP/CgBr+1CEl/PtYtAaMBkGCSqGSIb2fQdBAAQMMAob\n" +
        "BFY3LjEDAgCBMA0GCSqGSIb3DQEBBQUAA4GBAEa6RcDNcEIGUlkDJUY/pWTds4zh\n" +
        "xbVkp3wSmpwPFhx5fxTyF4HD2L60jl3aqjTB7gPpsL2Pk5QZlNsi3t4UkCV70UOd\n" +
        "ueJRN3o/LOtk4+bjXY2lC0qTHbN80VMLqPjmaf9ghSA9hwhskdtMgRsgfd90q5QP\n" +
        "ZFdYf+hthc3m6IcJ\n" +
        "-----END CERTIFICATE-----";

    // DigiNotar Root CA, compromised certificate
    static String compromisedCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIIFijCCA3KgAwIBAgIQDHbanJEMTiye/hXQWJM8TDANBgkqhkiG9w0BAQUFADBf\n" +
        "MQswCQYDVQQGEwJOTDESMBAGA1UEChMJRGlnaU5vdGFyMRowGAYDVQQDExFEaWdp\n" +
        "Tm90YXIgUm9vdCBDQTEgMB4GCSqGSIb3DQEJARYRaW5mb0BkaWdpbm90YXIubmww\n" +
        "HhcNMDcwNTE2MTcxOTM2WhcNMjUwMzMxMTgxOTIxWjBfMQswCQYDVQQGEwJOTDES\n" +
        "MBAGA1UEChMJRGlnaU5vdGFyMRowGAYDVQQDExFEaWdpTm90YXIgUm9vdCBDQTEg\n" +
        "MB4GCSqGSIb3DQEJARYRaW5mb0BkaWdpbm90YXIubmwwggIiMA0GCSqGSIb3DQEB\n" +
        "AQUAA4ICDwAwggIKAoICAQCssFjBAL3YIQgLK5r+blYwBZ8bd5AQQVzDDYcRd46B\n" +
        "8cp86Yxq7Th0Nbva3/m7wAk3tJZzgX0zGpg595NvlX89ubF1h7pRSOiLcD6VBMXY\n" +
        "tsMW2YiwsYcdcNqGtA8Ui3rPENF0NqISe3eGSnnme98CEWilToauNFibJBN4ViIl\n" +
        "HgGLS1Fx+4LMWZZpiFpoU8W5DQI3y0u8ZkqQfioLBQftFl9VkHXYRskbg+IIvvEj\n" +
        "zJkd1ioPgyAVWCeCLvriIsJJsbkBgWqdbZ1Ad2h2TiEqbYRAhU52mXyC8/O3AlnU\n" +
        "JgEbjt+tUwbRrhjd4rI6y9eIOI6sWym5GdOY+RgDz0iChmYLG2kPyes4iHomGgVM\n" +
        "ktck1JbyrFIto0fVUvY//s6EBnCmqj6i8rZWNBhXouSBbefK8GrTx5FrAoNBfBXv\n" +
        "a5pkXuPQPOWx63tdhvvL5ndJzaNl3Pe5nLjkC1+Tz8wwGjIczhxjlaX56uF0i57p\n" +
        "K6kwe6AYHw4YC+VbqdPRbB4HZ4+RS6mKvNJmqpMBiLKR+jFc1abBUggJzQpjotMi\n" +
        "puih2TkGl/VujQKQjBR7P4DNG5y6xFhyI6+2Vp/GekIzKQc/gsnmHwUNzUwoNovT\n" +
        "yD4cxojvXu6JZOkd69qJfjKmadHdzIif0dDJZiHcBmfFlHqabWJMfczgZICynkeO\n" +
        "owIDAQABo0IwQDAPBgNVHRMBAf8EBTADAQH/MA4GA1UdDwEB/wQEAwIBBjAdBgNV\n" +
        "HQ4EFgQUiGi/4I41xDs4a2L3KDuEgcgM100wDQYJKoZIhvcNAQEFBQADggIBADsC\n" +
        "jcs8MOhuoK3yc7NfniUTBAXT9uOLuwt5zlPe5JbF0a9zvNXD0EBVfEB/zRtfCdXy\n" +
        "fJ9oHbtdzno5wozWmHvFg1Wo1X1AyuAe94leY12hE8JdiraKfADzI8PthV9xdvBo\n" +
        "Y6pFITlIYXg23PFDk9Qlx/KAZeFTAnVR/Ho67zerhChXDNjU1JlWbOOi/lmEtDHo\n" +
        "M/hklJRRl6s5xUvt2t2AC298KQ3EjopyDedTFLJgQT2EkTFoPSdE2+Xe9PpjRchM\n" +
        "Ppj1P0G6Tss3DbpmmPHdy59c91Q2gmssvBNhl0L4eLvMyKKfyvBovWsdst+Nbwed\n" +
        "2o5nx0ceyrm/KkKRt2NTZvFCo+H0Wk1Ya7XkpDOtXHAd3ODy63MUkZoDweoAZbwH\n" +
        "/M8SESIsrqC9OuCiKthZ6SnTGDWkrBFfGbW1G/8iSlzGeuQX7yCpp/Q/rYqnmgQl\n" +
        "nQ7KN+ZQ/YxCKQSa7LnPS3K94gg2ryMvYuXKAdNw23yCIywWMQzGNgeQerEfZ1jE\n" +
        "O1hZibCMjFCz2IbLaKPECudpSyDOwR5WS5WpI2jYMNjD67BVUc3l/Su49bsRn1NU\n" +
        "9jQZjHkJNsphFyUXC4KYcwx3dMPVDceoEkzHp1RxRy4sGn3J4ys7SN4nhKdjNrN9\n" +
        "j6BkOSQNPXuHr2ZcdBtLc7LljPCGmbjlxd+Ewbfr\n" +
        "-----END CERTIFICATE-----";

    // DigiNotar Public CA 2025, intermediate certificate
    static String intermediateCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIIGAzCCA+ugAwIBAgIQHn16Uz1FMEGWQA9xSB9FBDANBgkqhkiG9w0BAQUFADBf\n" +
        "MQswCQYDVQQGEwJOTDESMBAGA1UEChMJRGlnaU5vdGFyMRowGAYDVQQDExFEaWdp\n" +
        "Tm90YXIgUm9vdCBDQTEgMB4GCSqGSIb3DQEJARYRaW5mb0BkaWdpbm90YXIubmww\n" +
        "HhcNMDYwMjA2MTYwNzAyWhcNMjUwMzI4MTYwNzAyWjBmMQswCQYDVQQGEwJOTDES\n" +
        "MBAGA1UEChMJRGlnaU5vdGFyMSEwHwYDVQQDExhEaWdpTm90YXIgUHVibGljIENB\n" +
        "IDIwMjUxIDAeBgkqhkiG9w0BCQEWEWluZm9AZGlnaW5vdGFyLm5sMIIBIjANBgkq\n" +
        "hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs/2eu/I5fMG8lbvPph3e8zfJpZQtg/72\n" +
        "Yx29+ivtKehiF6A3n785XyoY6IT3vlCrhy1CbMOY3M0x1n4YQlv17B0XZ/DqHyBA\n" +
        "SQvnDNbkM9j4NoSy/sRtGsP6PetIFFjrhE9whZuvuSUC1PY4PruEEJp8zOCx4+wU\n" +
        "Zt9xvjy4Xra+bSia5rwccQ/R5FYTGKrYCthOy9C9ud5Fhd++rlVhgdA/78w+Cs2s\n" +
        "xS4i0MAxG75P3/e/bATJKepbydHdDjkyz9o3RW/wdPUXhzEw4EwUjYg6XJrDzMad\n" +
        "6aL9M/eaxDjgz6o48EaWRDrGptaE2uJRuErVz7oOO0p/wYKq/BU+/wIDAQABo4IB\n" +
        "sjCCAa4wOgYIKwYBBQUHAQEELjAsMCoGCCsGAQUFBzABhh5odHRwOi8vdmFsaWRh\n" +
        "dGlvbi5kaWdpbm90YXIubmwwHwYDVR0jBBgwFoAUiGi/4I41xDs4a2L3KDuEgcgM\n" +
        "100wEgYDVR0TAQH/BAgwBgEB/wIBADCBxgYDVR0gBIG+MIG7MIG4Bg5ghBABh2kB\n" +
        "AQEBBQIGBDCBpTAnBggrBgEFBQcCARYbaHR0cDovL3d3dy5kaWdpbm90YXIubmwv\n" +
        "Y3BzMHoGCCsGAQUFBwICMG4abENvbmRpdGlvbnMsIGFzIG1lbnRpb25lZCBvbiBv\n" +
        "dXIgd2Vic2l0ZSAod3d3LmRpZ2lub3Rhci5ubCksIGFyZSBhcHBsaWNhYmxlIHRv\n" +
        "IGFsbCBvdXIgcHJvZHVjdHMgYW5kIHNlcnZpY2VzLjBDBgNVHR8EPDA6MDigNqA0\n" +
        "hjJodHRwOi8vc2VydmljZS5kaWdpbm90YXIubmwvY3JsL3Jvb3QvbGF0ZXN0Q1JM\n" +
        "LmNybDAOBgNVHQ8BAf8EBAMCAQYwHQYDVR0OBBYEFN8zwK+S/jf8ttgWFtDZsZHV\n" +
        "+m6lMA0GCSqGSIb3DQEBBQUAA4ICAQCfV1rmBd9QStEyQ40lT0tqby0/3ez0STuJ\n" +
        "ESBQLQD56XYdb4VFSuqA6xTtiuSVHLoiv2xyISN9FvX3A5VtifkJ00JEaLQJiSsE\n" +
        "wGDkYGl1DT7SsqtAVKdMAuCM+e0j0/RV3hZ6kcrM7/wFccHwM+/TiurR9lgZDzB4\n" +
        "a7++A4XrYyKx9vc9ZwBEnD1nrAe7++gg9cuZgP7e+QL0FBHMjpw+gnCDjr2dzBZC\n" +
        "4r+b8SOqlbPRPexBuNghlc7PfcPIyFis2LJXDRMWiAd3TcfdALwRsuKMR/T+cwyr\n" +
        "asy69OEGHplLT57otQ524BDctDXNzlH9bHEh52QzqkWvIDqs42910IUy1nYNPIUG\n" +
        "yYJV/T7H8Jb6vfMZWe47iUFvtNZCi8+b542gRUwdi+ca+hGviBC9Qr4Wv1pl7CBQ\n" +
        "Hy1axTkHiQawUo/hgmoetCpftugl9yJTfvsBorUV1ZMxn9B1JLSGtWnbUsFRla7G\n" +
        "fNa0IsUkzmmha8XCzvNu0d1PDGtcQyUqmDOE1Hx4cIBeuF8ipuIXkrVCr9zAZ4ZC\n" +
        "hgz6aA1gDTW8whSRJqYEYEQ0pcMEFLyXE+Nz3O8NinO2AuxqKhjMk13203xA7lPY\n" +
        "MnBQ0v7S3qqbp/pvPMiUhOz/VaYted6QmOY5EATBnFiLCuw87JXoAyp382eJ3WX1\n" +
        "hOiR4IX9Tg==\n" +
        "-----END CERTIFICATE-----";

    // The fraudulent certificate issued by above compromised CA
    static String targetCertStr =
        "-----BEGIN CERTIFICATE-----\n" +
        "MIIFKDCCBBCgAwIBAgIQBeLmpM0J6lTWZbB1/iKiVjANBgkqhkiG9w0BAQUFADBm\n" +
        "MQswCQYDVQQGEwJOTDESMBAGA1UEChMJRGlnaU5vdGFyMSEwHwYDVQQDExhEaWdp\n" +
        "Tm90YXIgUHVibGljIENBIDIwMjUxIDAeBgkqhkiG9w0BCQEWEWluZm9AZGlnaW5v\n" +
        "dGFyLm5sMB4XDTExMDcxMDE5MDYzMFoXDTEzMDcwOTE5MDYzMFowajELMAkGA1UE\n" +
        "BhMCVVMxEzARBgNVBAoTCkdvb2dsZSBJbmMxFjAUBgNVBAcTDU1vdW50YWluIFZp\n" +
        "ZXcxFzAVBgNVBAUTDlBLMDAwMjI5MjAwMDAyMRUwEwYDVQQDEwwqLmdvb2dsZS5j\n" +
        "b20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDNbeKubCV0aCxhOiOS\n" +
        "CSQ/w9HXTYuD5BLKuiqXNw3setdTymeJz2L8aWOHo3nicFNDVwWTgwWomGNr2J6Q\n" +
        "7g1iINNSW0rR4E1l2szRkcnAY6c6i/Eke93nF4i2hDsnIBveolF5yjpuRm73uQQD\n" +
        "ulHjA3BFRF/PTi0fw2/Yt+8ieoMuNcMWN6Eou5Gqt5YZkWv176ofeCbsBmMrP87x\n" +
        "OhhtTDckCapk4VQZG2XrfzZcV6tdzCp5TI8uHdu17cdzXm1imZ8tyvzFeiCEOQN8\n" +
        "vPNzB/fIr3CJQ5q4uM5aKT3DD5PeVzf4rfJKQNgCTWiIBc9XcWEUuszwAsnmg7e2\n" +
        "EJRdAgMBAAGjggHMMIIByDA6BggrBgEFBQcBAQQuMCwwKgYIKwYBBQUHMAGGHmh0\n" +
        "dHA6Ly92YWxpZGF0aW9uLmRpZ2lub3Rhci5ubDAfBgNVHSMEGDAWgBTfM8Cvkv43\n" +
        "/LbYFhbQ2bGR1fpupTAJBgNVHRMEAjAAMIHGBgNVHSAEgb4wgbswgbgGDmCEEAGH\n" +
        "aQEBAQIEAQICMIGlMCcGCCsGAQUFBwIBFhtodHRwOi8vd3d3LmRpZ2lub3Rhci5u\n" +
        "bC9jcHMwegYIKwYBBQUHAgIwbhpsQ29uZGl0aW9ucywgYXMgbWVudGlvbmVkIG9u\n" +
        "IG91ciB3ZWJzaXRlICh3d3cuZGlnaW5vdGFyLm5sKSwgYXJlIGFwcGxpY2FibGUg\n" +
        "dG8gYWxsIG91ciBwcm9kdWN0cyBhbmQgc2VydmljZXMuMEkGA1UdHwRCMEAwPqA8\n" +
        "oDqGOGh0dHA6Ly9zZXJ2aWNlLmRpZ2lub3Rhci5ubC9jcmwvcHVibGljMjAyNS9s\n" +
        "YXRlc3RDUkwuY3JsMA4GA1UdDwEB/wQEAwIEsDAbBgNVHREEFDASgRBhZG1pbkBn\n" +
        "b29nbGUuY29tMB0GA1UdDgQWBBQHSn0WJzIo0eMBMQUNsMqN6eF/7TANBgkqhkiG\n" +
        "9w0BAQUFAAOCAQEAAs5dL7N9wzRJkI4Aq4lC5t8j5ZadqnqUcgYLADzSv4ExytNH\n" +
        "UY2nH6iVTihC0UPSsILWraoeApdT7Rphz/8DLQEBRGdeKWAptNM3EbiXtQaZT2uB\n" +
        "pidL8UoafX0kch3f71Y1scpBEjvu5ZZLnjg0A8AL0tnsereOVdDpU98bKqdbbrnM\n" +
        "FRmBlSf7xdaNca6JJHeEpga4E9Ty683CmccrSGXdU2tTCuHEJww+iOAUtPIZcsum\n" +
        "U7/eYeY1pMyGLyIjbNgRY7nDzRwvM/BsbL9eh4/mSQj/4nncqJd22sVQpCggQiVK\n" +
        "baB2sVGcVNBkK55bT8gPqnx8JypubyUvayzZGg==\n" +
        "-----END CERTIFICATE-----";

    private static String tmAlgorithm;               // trust manager

    public static void main(String args[]) throws Exception {
        // Get the customized arguments.
        parseArguments(args);

        X509TrustManager tm = getTrustManager();
        X509Certificate[] chain = getFraudulentChain();

        Exception reservedException = null;
        try {
            tm.checkClientTrusted(chain, "RSA");
        } catch (CertificateException ce) {
            reservedException = ce;
        }

        if (reservedException == null) {
            throw new Exception("Unable to block fraudulent certificate");
        }

        reservedException = null;
        try {
            tm.checkServerTrusted(chain, "RSA");
        } catch (CertificateException ce) {
            reservedException = ce;
        }

        if (reservedException == null) {
            throw new Exception("Unable to block fraudulent certificate");
        }

        System.out.println(
            "The expected untrusted cert exception: " + reservedException);
    }

    private static void parseArguments(String[] args) {
        tmAlgorithm = args[0];
    }

    private static X509TrustManager getTrustManager() throws Exception {
        // generate certificate from cert string
        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        // create a key store
        KeyStore ks = KeyStore.getInstance("JKS");
        ks.load(null, null);

        // import the trusted cert
        try (ByteArrayInputStream is =
                new ByteArrayInputStream(trustedCertStr.getBytes())) {
            Certificate trustedCert = cf.generateCertificate(is);
            ks.setCertificateEntry("RSA Export Signer", trustedCert);
        }

        // create the trust manager
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmAlgorithm);
        tmf.init(ks);

        return (X509TrustManager)tmf.getTrustManagers()[0];
    }

    private static X509Certificate[] getFraudulentChain() throws Exception {
        // generate certificate from cert string
        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        X509Certificate[] chain = new X509Certificate[4];
        try (ByteArrayInputStream is =
                new ByteArrayInputStream(targetCertStr.getBytes())) {
            chain[0] = (X509Certificate)cf.generateCertificate(is);
        }

        try (ByteArrayInputStream is =
                new ByteArrayInputStream(intermediateCertStr.getBytes())) {
            chain[1] = (X509Certificate)cf.generateCertificate(is);
        }

        try (ByteArrayInputStream is =
                new ByteArrayInputStream(compromisedCertStr.getBytes())) {
            chain[2] = (X509Certificate)cf.generateCertificate(is);
        }

        try (ByteArrayInputStream is =
                new ByteArrayInputStream(untrustedCrossCertStr.getBytes())) {
            chain[3] = (X509Certificate)cf.generateCertificate(is);
        }

        return chain;
    }
}