Class CertificateLoadUtil

java.lang.Object

org.globus.gsi.util.CertificateLoadUtil

public final class CertificateLoadUtil
extends Object

Contains various security-related utility methods.

Field Summary

Fields

Modifier and Type	Field	Description
private static org.apache.commons.logging.Log	logger
private static String	provider

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CertificateLoadUtil()

Method Summary

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

Methods inherited from class Object

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

Field Details

logger

private static org.apache.commons.logging.Log logger

provider

private static String provider

Constructor Details

CertificateLoadUtil

private CertificateLoadUtil()

Method Details

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(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 CertificateFactory getCertificateFactory()
                                                   throws 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:

GeneralSecurityException

loadCertificate

public static X509Certificate loadCertificate(InputStream in)
                                       throws 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:

GeneralSecurityException - if certificate failed to load.

loadCertificate

public static X509Certificate loadCertificate(String file)
                                       throws IOException,
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:

IOException - if I/O error occurs

GeneralSecurityException - if security problems occurs.

loadCertificates

public static X509Certificate[] loadCertificates(String file)
                                          throws IOException,
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:

IOException - if I/O error occurs

GeneralSecurityException - if security problems occurs.

readCertificate

public static X509Certificate readCertificate(BufferedReader reader)
                                       throws IOException,
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:

IOException - if I/O error occurs

GeneralSecurityException - if security problems occurs.

loadCrl

public static X509CRL loadCrl(String file)
                       throws IOException,
GeneralSecurityException

Throws:

IOException

GeneralSecurityException

loadCrl

public static X509CRL loadCrl(InputStream in)
                       throws GeneralSecurityException

Throws:

GeneralSecurityException

getTrustedCertificates

public static Collection<X509Certificate> getTrustedCertificates(KeyStore keyStore,
 X509CertSelector selector)
                                                          throws KeyStoreException

Throws:

KeyStoreException