Example usage for java.security.cert CertificateFactory getInstance

List of usage examples for java.security.cert CertificateFactory getInstance

  1. HOME
  2. Java
  3. java
  4. java.security.cert.*
  5. CertificateFactory
  6. getInstance

Introduction

In this page you can find the example usage for java.security.cert CertificateFactory getInstance.

Prototype

public static final CertificateFactory getInstance(String type) throws CertificateException

Source Link

Document

Returns a certificate factory object that implements the specified certificate type.

Usage

From source file:Main.java

private static TrustManager[] prepareTrustManager(InputStream... certificates) {
    if (certificates != null && certificates.length > 0) {
        try {//from   w  w  w  . ja v a  2 s.  co m
            CertificateFactory e = CertificateFactory.getInstance("X.509");
            KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
            keyStore.load((KeyStore.LoadStoreParameter) null);
            int index = 0;
            InputStream[] trustManagerFactory = certificates;
            int trustManagers = certificates.length;

            for (int i$ = 0; i$ < trustManagers; ++i$) {
                InputStream certificate = trustManagerFactory[i$];
                String certificateAlias = Integer.toString(index++);
                keyStore.setCertificateEntry(certificateAlias, e.generateCertificate(certificate));

                try {
                    if (certificate != null) {
                        certificate.close();
                    }
                } catch (IOException var10) {
                    ;
                }
            }

            trustManagerFactory = null;
            TrustManagerFactory var15 = TrustManagerFactory
                    .getInstance(TrustManagerFactory.getDefaultAlgorithm());
            var15.init(keyStore);
            TrustManager[] var16 = var15.getTrustManagers();
            return var16;
        } catch (NoSuchAlgorithmException var11) {
            var11.printStackTrace();
        } catch (CertificateException var12) {
            var12.printStackTrace();
        } catch (KeyStoreException var13) {
            var13.printStackTrace();
        } catch (Exception var14) {
            var14.printStackTrace();
        }

        return null;
    } else {
        return null;
    }
}

From source file:Main.java

private static TrustManager[] prepareTrustManager(InputStream... certificates) {
    if (certificates == null || certificates.length <= 0)
        return null;
    try {/*  w  ww .  j av  a2s  .  c  o  m*/

        CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        keyStore.load(null);
        int index = 0;
        for (InputStream certificate : certificates) {
            String certificateAlias = Integer.toString(index++);
            keyStore.setCertificateEntry(certificateAlias, certificateFactory.generateCertificate(certificate));
            try {
                if (certificate != null)
                    certificate.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        TrustManagerFactory trustManagerFactory = null;

        trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        trustManagerFactory.init(keyStore);

        TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();

        return trustManagers;
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (CertificateException e) {
        e.printStackTrace();
    } catch (KeyStoreException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;

}

From source file:Main.java

private static TrustManager[] prepareTrustManager(InputStream... certificates) {
    if (certificates == null || certificates.length <= 0)
        return null;
    try {/*w  w  w . j  a  v a  2  s. c om*/

        CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        keyStore.load(null);
        int index = 0;
        for (InputStream certificate : certificates) {
            String certificateAlias = Integer.toString(index++);
            keyStore.setCertificateEntry(certificateAlias, certificateFactory.generateCertificate(certificate));
            try {
                if (certificate != null)
                    certificate.close();
            } catch (IOException e)

            {
            }
        }
        TrustManagerFactory trustManagerFactory = null;

        trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        trustManagerFactory.init(keyStore);

        TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();

        return trustManagers;
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (CertificateException e) {
        e.printStackTrace();
    } catch (KeyStoreException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;

}

From source file:Main.java

/**
 * Creates an SSLSocketFactory which contains {@code certChainFile} as its only root certificate.
 *//*from  ww  w. j a v a2 s.  co m*/
public static SSLSocketFactory newSslSocketFactoryForCa(InputStream certChain) throws Exception {
    KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
    ks.load(null, null);
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    X509Certificate cert = (X509Certificate) cf.generateCertificate(new BufferedInputStream(certChain));
    X500Principal principal = cert.getSubjectX500Principal();
    ks.setCertificateEntry(principal.getName("RFC2253"), cert);
    //    ks.setCertificateEntry("ca", cert);

    // Set up trust manager factory to use our key store.
    TrustManagerFactory trustManagerFactory = TrustManagerFactory
            .getInstance(TrustManagerFactory.getDefaultAlgorithm());
    trustManagerFactory.init(ks);
    SSLContext context = SSLContext.getInstance("TLS");
    context.init(null, trustManagerFactory.getTrustManagers(), null);
    return context.getSocketFactory();
}

From source file:Main.java

public static X509Certificate loadCertificate(byte[] encodedDerCertificate) throws CertificateException {
    X509Certificate certificate = (X509Certificate) CertificateFactory.getInstance("X.509")
            .generateCertificate(new ByteArrayInputStream(encodedDerCertificate));

    return certificate;
}

From source file:Main.java

public static X509Certificate fromString(String certificate) throws CertificateException {
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    return (X509Certificate) cf.generateCertificate(new ByteArrayInputStream(certificate.getBytes()));
}

From source file:Main.java

static X509Certificate loadPEMCertificate(String fname) throws Exception {
    try (FileInputStream fis = new FileInputStream(fname)) {
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        return (X509Certificate) cf.generateCertificate(fis);
    }/* w w  w .ja v  a 2s . c  o m*/
}

From source file:Main.java

public static SocketFactory getSocketFactoryWithCustomCA(InputStream stream) throws CertificateException,
        KeyStoreException, IOException, NoSuchAlgorithmException, KeyManagementException {

    // Load CAs from an InputStream
    // (could be from a resource or ByteArrayInputStream or ...)
    CertificateFactory cf = CertificateFactory.getInstance("X.509");

    InputStream caInput = new BufferedInputStream(stream);
    Certificate ca;/*from   ww  w. j a  v  a  2 s .c  o  m*/
    try {
        ca = cf.generateCertificate(caInput);
        System.out.println("ca=" + ((X509Certificate) ca).getSubjectDN());
    } finally {
        try {
            caInput.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    // Create a KeyStore containing our trusted CAs
    String keyStoreType = KeyStore.getDefaultType();
    KeyStore keyStore = KeyStore.getInstance(keyStoreType);
    keyStore.load(null, null);
    keyStore.setCertificateEntry("ca", ca);

    // Create a TrustManager that trusts the CAs in our KeyStore
    String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
    TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);
    tmf.init(keyStore);

    // Create an SSLContext that uses our TrustManager
    SSLContext context = SSLContext.getInstance("TLS");
    context.init(null, tmf.getTrustManagers(), null);

    return context.getSocketFactory();
}

From source file:Main.java

public static X509Certificate getCertificateFromBlob(byte[] encoded) throws IOException {
    try {/*from w  w  w .  j  av a 2  s  .  co  m*/
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        return (X509Certificate) cf.generateCertificate(new ByteArrayInputStream(encoded));
    } catch (GeneralSecurityException gse) {
        throw new IOException(gse);
    }
}

From source file:Main.java

public static boolean isDebuggable(Context ctx) {
    boolean debuggable = false;
    try {/*from w  ww  .java  2  s  .  com*/
        PackageInfo pinfo = ctx.getPackageManager().getPackageInfo(ctx.getPackageName(),
                PackageManager.GET_SIGNATURES);
        Signature signatures[] = pinfo.signatures;
        for (int i = 0; i < signatures.length; i++) {
            CertificateFactory cf = CertificateFactory.getInstance("X.509");
            ByteArrayInputStream stream = new ByteArrayInputStream(signatures[i].toByteArray());
            X509Certificate cert = (X509Certificate) cf.generateCertificate(stream);
            debuggable = cert.getSubjectX500Principal().equals(DEBUG_DN);
            if (debuggable)
                break;
        }
    } catch (NameNotFoundException e) {
    } catch (CertificateException e) {
    }
    return debuggable;
}