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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.asn1.test;


import java.io.IOException;

import org.bouncycastle.asn1.cmp.CMPCertificate;
import org.bouncycastle.asn1.cmp.CertOrEncCert;
import org.bouncycastle.asn1.cmp.CertifiedKeyPair;
import org.bouncycastle.asn1.crmf.EncryptedKey;
import org.bouncycastle.asn1.crmf.EncryptedValue;
import org.bouncycastle.asn1.crmf.PKIPublicationInfo;
import org.bouncycastle.asn1.x509.Certificate;
import org.bouncycastle.util.encoders.Base64;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;

public class CertifiedKeyPairTest
    extends SimpleTest
{
    byte[]  cert1 = Base64.decode(
           "MIIDXjCCAsegAwIBAgIBBzANBgkqhkiG9w0BAQQFADCBtzELMAkGA1UEBhMCQVUx"
         + "ETAPBgNVBAgTCFZpY3RvcmlhMRgwFgYDVQQHEw9Tb3V0aCBNZWxib3VybmUxGjAY"
         + "BgNVBAoTEUNvbm5lY3QgNCBQdHkgTHRkMR4wHAYDVQQLExVDZXJ0aWZpY2F0ZSBB"
         + "dXRob3JpdHkxFTATBgNVBAMTDENvbm5lY3QgNCBDQTEoMCYGCSqGSIb3DQEJARYZ"
         + "d2VibWFzdGVyQGNvbm5lY3Q0LmNvbS5hdTAeFw0wMDA2MDIwNzU2MjFaFw0wMTA2"
         + "MDIwNzU2MjFaMIG4MQswCQYDVQQGEwJBVTERMA8GA1UECBMIVmljdG9yaWExGDAW"
         + "BgNVBAcTD1NvdXRoIE1lbGJvdXJuZTEaMBgGA1UEChMRQ29ubmVjdCA0IFB0eSBM"
         + "dGQxFzAVBgNVBAsTDldlYnNlcnZlciBUZWFtMR0wGwYDVQQDExR3d3cyLmNvbm5l"
         + "Y3Q0LmNvbS5hdTEoMCYGCSqGSIb3DQEJARYZd2VibWFzdGVyQGNvbm5lY3Q0LmNv"
         + "bS5hdTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEArvDxclKAhyv7Q/Wmr2re"
         + "Gw4XL9Cnh9e+6VgWy2AWNy/MVeXdlxzd7QAuc1eOWQkGQEiLPy5XQtTY+sBUJ3AO"
         + "Rvd2fEVJIcjf29ey7bYua9J/vz5MG2KYo9/WCHIwqD9mmG9g0xLcfwq/s8ZJBswE"
         + "7sb85VU+h94PTvsWOsWuKaECAwEAAaN3MHUwJAYDVR0RBB0wG4EZd2VibWFzdGVy"
         + "QGNvbm5lY3Q0LmNvbS5hdTA6BglghkgBhvhCAQ0ELRYrbW9kX3NzbCBnZW5lcmF0"
         + "ZWQgY3VzdG9tIHNlcnZlciBjZXJ0aWZpY2F0ZTARBglghkgBhvhCAQEEBAMCBkAw"
         + "DQYJKoZIhvcNAQEEBQADgYEAotccfKpwSsIxM1Hae8DR7M/Rw8dg/RqOWx45HNVL"
         + "iBS4/3N/TO195yeQKbfmzbAA2jbPVvIvGgTxPgO1MP4ZgvgRhasaa0qCJCkWvpM4"
         + "yQf33vOiYQbpv4rTwzU8AmRlBG45WdjyNIigGV+oRc61aKCTnLq7zB8N3z1TF/bF"
         + "5/8=");

    byte[] encEncryptedValue = Hex.decode(
        "30820145a11d060960864801650304010204109ed75dc2111f006e0ea707583" +
            "daa49898241001fad2520dec6122c51f9f292fc96de9adb881a2101a49155de" +
            "3e4b04a4699ee517d7a7623679812f62e0fc996854d89df2daa6850862f11e4" +
            "f1751768e8a1a8da30d06092a864886f70d01010105000381d100bb1084782a" +
            "3b326390ce1096b44eda81e89b24e117c22b197a0df3ff3d181a5e3d96f30f6" +
            "a7f8b545733a867f27f299ff3c2c0ec64bcdca18f566a5e3be893e4842a7442" +
            "184a4d147066515d8bcb9aa7d8e6655937e393b2c45186119bf0869702fc58a" +
            "ae8a983ce5b54cf5273bcd2e5273e219e2947e41446612c8cf8f4d9e1ede52d" +
            "25e00d505485083ea8359f7767c0ae66ff47894f9d621459f50f60e0376059a" +
            "6a3b6fe7caca1c13274cf549f6721cf9f3654462687c7392a1c0efea2f393d9" +
            "4a5d33b829de8bd521c7205069db");

    public void performTest()
        throws Exception
    {
        CertOrEncCert certOrEncCert = new CertOrEncCert(new CMPCertificate(Certificate.getInstance(cert1)));

        CertifiedKeyPair ckp = new CertifiedKeyPair(certOrEncCert);

        isEquals(certOrEncCert, ckp.getCertOrEncCert());
        isTrue(null == ckp.getPrivateKey());
        isTrue(null == ckp.getPublicationInfo());

        encEqualTest(ckp);

        PKIPublicationInfo pubInfo = new PKIPublicationInfo(PKIPublicationInfo.dontPublish);
        ckp = new CertifiedKeyPair(certOrEncCert, (EncryptedKey)null, pubInfo);

        isEquals(certOrEncCert, ckp.getCertOrEncCert());
        isTrue(null == ckp.getPrivateKey());
        isEquals(pubInfo, ckp.getPublicationInfo());

        encEqualTest(ckp);

        EncryptedValue encValue = EncryptedValue.getInstance(encEncryptedValue);

        ckp = new CertifiedKeyPair(certOrEncCert, encValue, null);

        isEquals(certOrEncCert, ckp.getCertOrEncCert());
        isEquals(encValue, ckp.getPrivateKey());
        isTrue(null == ckp.getPublicationInfo());

        encEqualTest(ckp);

        ckp = new CertifiedKeyPair(certOrEncCert, encValue, pubInfo);

        isEquals(certOrEncCert, ckp.getCertOrEncCert());
        isEquals(encValue, ckp.getPrivateKey());
        isEquals(pubInfo, ckp.getPublicationInfo());

        encEqualTest(ckp);
    }

    private void encEqualTest(CertifiedKeyPair ckp)
        throws IOException
    {
        byte[] b = ckp.getEncoded();

        CertifiedKeyPair ckpResult = CertifiedKeyPair.getInstance(b);

        isEquals(ckp, ckpResult);
    }

    public String getName()
    {
        return "CertifiedKeyPairTest";
    }

    public static void main(String[] args) {
        runTest(new CertifiedKeyPairTest());
    }

}