Example usage for java.security.cert Certificate getEncoded

Introduction

In this page you can find the example usage for java.security.cert Certificate getEncoded.

Prototype

public abstract byte[] getEncoded() throws CertificateEncodingException;

Source Link

Document

Returns the encoded form of this certificate.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    FileInputStream is = new FileInputStream("your.keystore");

    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    keystore.load(is, "my-keystore-password".toCharArray());

    String alias = "myalias";
    Certificate cert = keystore.getCertificate(alias);

    File file = null;// w  w  w  .  java  2s. c  o  m
    byte[] buf = cert.getEncoded();

    FileOutputStream os = new FileOutputStream(file);
    os.write(buf);
    os.close();

    Writer wr = new OutputStreamWriter(os, Charset.forName("UTF-8"));
    wr.write(new sun.misc.BASE64Encoder().encode(buf));
    wr.flush();

}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String keystoreFile = "keyStoreFile.bin";
    String caAlias = "caAlias";
    String certToSignAlias = "cert";
    String newAlias = "newAlias";

    char[] password = new char[] { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };
    char[] caPassword = new char[] { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };
    char[] certPassword = new char[] { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' };

    FileInputStream input = new FileInputStream(keystoreFile);
    KeyStore keyStore = KeyStore.getInstance("JKS");
    keyStore.load(input, password);//  ww w  .j  a  v  a  2 s. c  o  m
    input.close();

    PrivateKey caPrivateKey = (PrivateKey) keyStore.getKey(caAlias, caPassword);
    java.security.cert.Certificate caCert = keyStore.getCertificate(caAlias);

    byte[] encoded = caCert.getEncoded();
    X509CertImpl caCertImpl = new X509CertImpl(encoded);

    X509CertInfo caCertInfo = (X509CertInfo) caCertImpl.get(X509CertImpl.NAME + "." + X509CertImpl.INFO);

    X500Name issuer = (X500Name) caCertInfo.get(X509CertInfo.SUBJECT + "." + CertificateIssuerName.DN_NAME);

    java.security.cert.Certificate cert = keyStore.getCertificate(certToSignAlias);
    PrivateKey privateKey = (PrivateKey) keyStore.getKey(certToSignAlias, certPassword);
    encoded = cert.getEncoded();
    X509CertImpl certImpl = new X509CertImpl(encoded);
    X509CertInfo certInfo = (X509CertInfo) certImpl.get(X509CertImpl.NAME + "." + X509CertImpl.INFO);

    Date firstDate = new Date();
    Date lastDate = new Date(firstDate.getTime() + 365 * 24 * 60 * 60 * 1000L);
    CertificateValidity interval = new CertificateValidity(firstDate, lastDate);

    certInfo.set(X509CertInfo.VALIDITY, interval);

    certInfo.set(X509CertInfo.SERIAL_NUMBER, new CertificateSerialNumber((int) (firstDate.getTime() / 1000)));

    certInfo.set(X509CertInfo.ISSUER + "." + CertificateSubjectName.DN_NAME, issuer);

    AlgorithmId algorithm = new AlgorithmId(AlgorithmId.md5WithRSAEncryption_oid);
    certInfo.set(CertificateAlgorithmId.NAME + "." + CertificateAlgorithmId.ALGORITHM, algorithm);
    X509CertImpl newCert = new X509CertImpl(certInfo);

    newCert.sign(caPrivateKey, "MD5WithRSA");

    keyStore.setKeyEntry(newAlias, privateKey, certPassword, new java.security.cert.Certificate[] { newCert });

    FileOutputStream output = new FileOutputStream(keystoreFile);
    keyStore.store(output, password);
    output.close();

}

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From source file:com.daon.identityx.utils.GenerateAndroidFacet.java

public static void main(String[] args) {

    String androidKeystoreLocation = System.getProperty("ANDROID_KEYSTORE_LOCATION",
            DEFAULT_ANDROID_KEYSTORE_LOCATION);
    String androidKeystorePassword = System.getProperty("ANDROID_KEYSTORE_PASSWORD",
            DEFAULT_ANDROID_KEYSTORE_PASSWORD);
    String androidKeystoreCert = System.getProperty("ANDROID_KEYSTORE_CERT_NAME",
            DEFAULT_ANDROID_KEYSTORE_CERT_NAME);
    String hashingAlgorithm = System.getProperty("HASHING_ALGORITHM", DEFAULT_HASHING_ALGORITHM);

    try {//w  w w.  j  a va2  s .  com
        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        File filePath = new File(androidKeystoreLocation);
        if (!filePath.exists()) {
            System.err.println(
                    "The filepath to the debug keystore could not be located at: " + androidKeystoreCert);
            System.exit(1);
        } else {
            System.out.println("Found the Android Studio keystore at: " + androidKeystoreLocation);
        }

        keyStore.load(new FileInputStream(filePath), androidKeystorePassword.toCharArray());
        System.out.println("Keystore loaded - password and location were OK");

        Certificate cert = keyStore.getCertificate(androidKeystoreCert);
        if (cert == null) {
            System.err.println(
                    "Could not location the certification in the store with the name: " + androidKeystoreCert);
            System.exit(1);
        } else {
            System.out.println("Certificate found in the store with name: " + androidKeystoreCert);
        }

        byte[] certBytes = cert.getEncoded();

        MessageDigest digest = MessageDigest.getInstance(hashingAlgorithm);
        System.out.println("Hashing algorithm: " + hashingAlgorithm + " found.");
        byte[] hashedCert = digest.digest(certBytes);
        String base64HashedCert = Base64.getEncoder().encodeToString(hashedCert);
        System.out.println("Base64 encoded SHA-1 hash of the certificate: " + base64HashedCert);
        String base64HashedCertRemoveTrailing = StringUtils.deleteAny(base64HashedCert, "=");
        System.out.println(
                "Add the following facet to the Facets file in order for the debug app to be trusted by the FIDO client");
        System.out.println("\"android:apk-key-hash:" + base64HashedCertRemoveTrailing + "\"");

    } catch (Throwable ex) {
        ex.printStackTrace();
    }

}

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From source file:com.aqnote.shared.cryptology.cert.tool.X509CertTool.java

public static String coverCert2String(Certificate cert) throws CertificateEncodingException {
    String certContent = Base64.encodeBase64String(cert.getEncoded());
    String crtFile = BEGIN_CERT + lineSeparator + certContent + END_CERT;
    return crtFile;
}

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From source file:com.thoughtworks.go.security.RegistrationJSONizer.java

public static String toJson(Registration registration) {
    Map<String, Object> ret = new HashMap<>();

    if (registration.isValid()) {
        ret.put("agentPrivateKey", serialize("RSA PRIVATE KEY", registration.getPrivateKey().getEncoded()));
        StringBuilder builder = new StringBuilder();
        for (Certificate c : registration.getChain()) {
            try {
                builder.append(serialize("CERTIFICATE", c.getEncoded()));
            } catch (CertificateEncodingException e) {
                throw bomb(e);
            }/*from w w  w  .j  a v  a 2 s . c o m*/
        }
        ret.put("agentCertificate", builder.toString());
    }

    return GSON.toJson(ret);
}

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From source file:com.vmware.identity.rest.core.util.CertificateHelper.java

/**
 * Encodes an {@code Certificate} into a PEM-formatted encoding.
 *
 * @param certificate the certificate to encode.
 * @return the PEM-formatted encoding of the certificate.
 * @throws CertificateEncodingException if an encoding error occurs.
 *///w ww .j  a  v  a 2  s. c om
public static String convertToPEM(Certificate certificate) throws CertificateEncodingException {
    if (certificate == null) {
        return null;
    }

    return convertToPEM(certificate.getEncoded());
}

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From source file:Main.java

/**
 * Returns the {@link Certificate} fingerprint as returned by <code>keytool</code>.
 *
 * @param certificate/*from  w  w  w. j  a va2s  . com*/
 * @param hashAlgorithm
 */
public static String getFingerprint(Certificate cert, String hashAlgorithm) {
    if (cert == null) {
        return null;
    }
    try {
        MessageDigest digest = MessageDigest.getInstance(hashAlgorithm);
        return toHexadecimalString(digest.digest(cert.getEncoded()));
    } catch (NoSuchAlgorithmException e) {
        // ignore
    } catch (CertificateEncodingException e) {
        // ignore
    }
    return null;
}

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From source file:org.apache.ofbiz.base.util.KeyStoreUtil.java

public static String certToString(Certificate cert) throws CertificateEncodingException {
    byte[] certBuf = cert.getEncoded();
    StringBuilder buf = new StringBuilder();
    buf.append("-----BEGIN CERTIFICATE-----\n");
    buf.append(new String(Base64.encodeBase64Chunked(certBuf)));
    buf.append("\n-----END CERTIFICATE-----\n");
    return buf.toString();
}

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From source file:org.codice.ddf.security.certificate.generator.CertificateCommandTest.java

private static void validateSans(KeyStoreFile ksf, String alias, boolean withAdditionalSans) throws Exception {
    final KeyStore.Entry ke = ksf.getEntry(alias);
    assertThat(ke, instanceOf(KeyStore.PrivateKeyEntry.class));

    final KeyStore.PrivateKeyEntry pke = (KeyStore.PrivateKeyEntry) ke;
    final Certificate c = pke.getCertificate();
    final X509CertificateHolder holder = new X509CertificateHolder(c.getEncoded());
    final Extension csn = holder.getExtension(Extension.subjectAlternativeName);

    assertThat(csn.getParsedValue().toASN1Primitive().getEncoded(ASN1Encoding.DER),
            equalTo(expectedSanGeneralName(alias, withAdditionalSans)));
}

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From source file:vellumcert.Pems.java

public static String buildCertPem(Certificate cert) throws CertificateEncodingException {
    StringBuilder builder = new StringBuilder();
    builder.append(DASHES);//from w w w .  j av  a 2s  . com
    builder.append(BEGIN_CERT);
    builder.append(DASHES);
    builder.append('\n');
    String text = Base64.encodeBase64String(cert.getEncoded());
    for (int index = 0;; index += LENGTH) {
        if (index + LENGTH < text.length()) {
            builder.append(text.substring(index, index + LENGTH));
            builder.append('\n');
        } else {
            builder.append(text.substring(index));
            builder.append('\n');
            break;
        }
    }
    builder.append(DASHES);
    builder.append(END_CERT);
    builder.append(DASHES);
    builder.append('\n');
    return builder.toString();
}

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