Class CertificateUtil

java.lang.Object

com.itextpdf.text.pdf.security.CertificateUtil

public class CertificateUtil
extends Object

This class contains a series of static methods that allow you to retrieve information from a Certificate.

Constructor Summary

Constructors

Constructor	Description
CertificateUtil()

Method Summary

Modifier and Type	Method	Description
static CRL	getCRL(String url)	Gets the CRL object using a CRL URL.
static CRL	getCRL(X509Certificate certificate)	Gets a CRL from a certificate
static String	getCRLURL(X509Certificate certificate)	Gets the URL of the Certificate Revocation List for a Certificate
private static org.bouncycastle.asn1.ASN1Primitive	getExtensionValue(X509Certificate certificate, String oid)
static String	getOCSPURL(X509Certificate certificate)	Retrieves the OCSP URL from the given certificate.
private static String	getStringFromGeneralName(org.bouncycastle.asn1.ASN1Primitive names)	Gets a String from an ASN1Primitive
static String	getTSAURL(X509Certificate certificate)	Gets the URL of the TSA if it's available on the certificate

Methods inherited from class Object

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

Constructor Details

CertificateUtil

public CertificateUtil()

Method Details

getCRL

public static CRL getCRL(X509Certificate certificate)
                  throws CertificateException,
CRLException,
IOException

Gets a CRL from a certificate

Parameters:

certificate -

Returns:

the CRL or null if there's no CRL available

Throws:

CertificateException

CRLException

IOException

getCRLURL

public static String getCRLURL(X509Certificate certificate)
                        throws CertificateParsingException

Gets the URL of the Certificate Revocation List for a Certificate

Parameters:

certificate - the Certificate

Returns:

the String where you can check if the certificate was revoked

Throws:

CertificateParsingException

IOException

getCRL

public static CRL getCRL(String url)
                  throws IOException,
CertificateException,
CRLException

Gets the CRL object using a CRL URL.

Parameters:

url - the URL where to get the CRL

Returns:

a CRL object

Throws:

IOException

CertificateException

CRLException

getOCSPURL

public static String getOCSPURL(X509Certificate certificate)

Retrieves the OCSP URL from the given certificate.

Parameters:

certificate - the certificate

Returns:

the URL or null

Throws:

IOException

getTSAURL

public static String getTSAURL(X509Certificate certificate)

Gets the URL of the TSA if it's available on the certificate

Parameters:

certificate - a certificate

Returns:

a TSA URL

Throws:

IOException

getExtensionValue

private static org.bouncycastle.asn1.ASN1Primitive getExtensionValue(X509Certificate certificate,
 String oid)
                                                              throws IOException

Parameters:

certificate - the certificate from which we need the ExtensionValue

oid - the Object Identifier value for the extension.

Returns:

the extension value as an ASN1Primitive object

Throws:

IOException

getStringFromGeneralName

private static String getStringFromGeneralName(org.bouncycastle.asn1.ASN1Primitive names)
                                        throws IOException

Gets a String from an ASN1Primitive

Parameters:

names - the ASN1Primitive

Returns:

a human-readable String

Throws:

IOException