org.globus.gsi.util
Class CertificateLoadUtil

java.lang.Object
  org.globus.gsi.util.CertificateLoadUtil

public final class CertificateLoadUtil
extends java.lang.Object

Contains various security-related utility methods.

Method Summary

protected static java.security.cert.CertificateFactory	getCertificateFactory() Returns appropriate CertificateFactory.
static java.util.Collection<java.security.cert.X509Certificate>	getTrustedCertificates(java.security.KeyStore keyStore, java.security.cert.X509CertSelector selector)
static void	init() A no-op function that can be used to force the class to load and initialize.
static java.security.cert.X509Certificate	loadCertificate(java.io.InputStream in) Loads a X509 certificate from the specified input stream.
static java.security.cert.X509Certificate	loadCertificate(java.lang.String file) Loads an X.509 certificate from the specified file.
static java.security.cert.X509Certificate[]	loadCertificates(java.lang.String file) Loads multiple X.509 certificates from the specified file.
static java.security.cert.X509CRL	loadCrl(java.io.InputStream in)
static java.security.cert.X509CRL	loadCrl(java.lang.String file)
static java.security.cert.X509Certificate	readCertificate(java.io.BufferedReader reader) Loads a X.509 certificate from the specified reader.
static void	setProvider(java.lang.String providerName) Sets a provider name to use for loading certificates and for generating key pairs.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

init

public static void init()

A no-op function that can be used to force the class to load and initialize.

setProvider

public static void setProvider(java.lang.String providerName)

Sets a provider name to use for loading certificates and for generating key pairs.

Parameters:

providerName - provider name to use.

getCertificateFactory

protected static java.security.cert.CertificateFactory getCertificateFactory()
                                                                      throws java.security.GeneralSecurityException

Returns appropriate CertificateFactory. If provider was set a provider-specific CertificateFactory will be used. Otherwise, a default CertificateFactory will be used.

Returns:

CertificateFactory

Throws:

java.security.GeneralSecurityException

loadCertificate

public static java.security.cert.X509Certificate loadCertificate(java.io.InputStream in)
                                                          throws java.security.GeneralSecurityException

Loads a X509 certificate from the specified input stream. Input stream must contain DER-encoded certificate.

Parameters:

in - the input stream to read the certificate from.

Returns:

X509Certificate the loaded certificate.

Throws:

java.security.GeneralSecurityException - if certificate failed to load.

loadCertificate

public static java.security.cert.X509Certificate loadCertificate(java.lang.String file)
                                                          throws java.io.IOException,
                                                                 java.security.GeneralSecurityException

Loads an X.509 certificate from the specified file. The certificate file must be in PEM/Base64 format and start with "BEGIN CERTIFICATE" and end with "END CERTIFICATE" line.

Parameters:

file - the file to load the certificate from.

Returns:

java.security.cert.X509Certificate the loaded certificate.

Throws:

java.io.IOException - if I/O error occurs

java.security.GeneralSecurityException - if security problems occurs.

loadCertificates

public static java.security.cert.X509Certificate[] loadCertificates(java.lang.String file)
                                                             throws java.io.IOException,
                                                                    java.security.GeneralSecurityException

Loads multiple X.509 certificates from the specified file. Each certificate must be in PEM/Base64 format and start with "BEGIN CERTIFICATE" and end with "END CERTIFICATE" line.

Parameters:

file - the certificate file to load the certificate from.

Returns:

an array of certificates loaded from the file.

Throws:

java.io.IOException - if I/O error occurs

java.security.GeneralSecurityException - if security problems occurs.

readCertificate

public static java.security.cert.X509Certificate readCertificate(java.io.BufferedReader reader)
                                                          throws java.io.IOException,
                                                                 java.security.GeneralSecurityException

Loads a X.509 certificate from the specified reader. The certificate contents must start with "BEGIN CERTIFICATE" line and end with "END CERTIFICATE" line, and be in PEM/Base64 format.

This function does not close the input stream.

Parameters:

reader - the stream from which load the certificate.

Returns:

the loaded certificate or null if there was no certificate in the stream or the stream is closed.

Throws:

java.io.IOException - if I/O error occurs

java.security.GeneralSecurityException - if security problems occurs.

loadCrl

public static java.security.cert.X509CRL loadCrl(java.lang.String file)
                                          throws java.io.IOException,
                                                 java.security.GeneralSecurityException

Throws:

java.io.IOException

java.security.GeneralSecurityException

loadCrl

public static java.security.cert.X509CRL loadCrl(java.io.InputStream in)
                                          throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

getTrustedCertificates

public static java.util.Collection<java.security.cert.X509Certificate> getTrustedCertificates(java.security.KeyStore keyStore,
                                                                                              java.security.cert.X509CertSelector selector)
                                                                                       throws java.security.KeyStoreException

Throws:

java.security.KeyStoreException