java.security.cert

Interface X509Extension

public interface X509Extension

Public interface for the X.509 Extension. This is used for X.509 v3 Certificates and CRL v2 (Certificate Revocation Lists) for managing attributes assoicated with Certificates, for managing the hierarchy of certificates, and for managing the distribution of CRL. This extension format is used to define private extensions. Each extensions for a certificate or CRL must be marked either critical or non-critical. If the certificate/CRL system encounters a critical extension not recognized then it must reject the certificate. A non-critical extension may be just ignored if not recognized. The ASN.1 definition for this class is: Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension Extension ::= SEQUENCE { extnId OBJECT IDENTIFIER, critical BOOLEAN DEFAULT FALSE, extnValue OCTET STRING -- contains a DER encoding of a value -- of the type registered for use with -- the extnId object identifier value }

Since: 1.2

Method Summary
Set<String>	getCriticalExtensionOIDs() Returns a set of the CRITICAL extension OIDs from the certificate/CRL that the object implementing this interface manages.
byte[]	getExtensionValue(String oid) Returns the DER encoded OCTET string for the specified extension value identified by a OID.
Set<String>	getNonCriticalExtensionOIDs() Returns a set of the NON-CRITICAL extension OIDs from the certificate/CRL that the object implementing this interface manages.
boolean	hasUnsupportedCriticalExtension() Returns true if the certificate contains a critical extension that is not supported.

Method Detail

getCriticalExtensionOIDs

public Set<String> getCriticalExtensionOIDs()

Returns a set of the CRITICAL extension OIDs from the certificate/CRL that the object implementing this interface manages.

Returns: A Set containing the OIDs. If there are no CRITICAL extensions or extensions at all this returns null.

getExtensionValue

public byte[] getExtensionValue(String oid)

Returns the DER encoded OCTET string for the specified extension value identified by a OID. The OID is a string of number separated by periods. Ex: 12.23.45.67

getNonCriticalExtensionOIDs

public Set<String> getNonCriticalExtensionOIDs()

Returns a set of the NON-CRITICAL extension OIDs from the certificate/CRL that the object implementing this interface manages.

Returns: A Set containing the OIDs. If there are no NON-CRITICAL extensions or extensions at all this returns null.

hasUnsupportedCriticalExtension

public boolean hasUnsupportedCriticalExtension()

Returns true if the certificate contains a critical extension that is not supported.

Returns: true if has unsupported extension, false otherwise