An immutable policy qualifier represented by the ASN.1 PolicyQualifierInfo structure.
The ASN.1 definition is as follows:
PolicyQualifierInfo ::= SEQUENCE { policyQualifierId PolicyQualifierId, qualifier ANY DEFINED BY policyQualifierId }
A certificate policies extension, if present in an X.509 version 3 certificate, contains a sequence of one or more policy information terms, each of which consists of an object identifier (OID) and optional qualifiers. In an end-entity certificate, these policy information terms indicate the policy under which the certificate has been issued and the purposes for which the certificate may be used. In a CA certificate, these policy information terms limit the set of policies for certification paths which include this certificate.
A Set
of PolicyQualifierInfo
objects are returned
by the PolicyNode.getPolicyQualifiers
method. This allows applications with specific policy requirements to
process and validate each policy qualifier. Applications that need to
process policy qualifiers should explicitly set the
policyQualifiersRejected
flag to false (by calling the
PKIXParameters.setPolicyQualifiersRejected
method) before validating
a certification path.
Note that the PKIX certification path validation algorithm specifies
that any policy qualifier in a certificate policies extension that is
marked critical must be processed and validated. Otherwise the
certification path must be rejected. If the
policyQualifiersRejected
flag is set to false, it is up to
the application to validate all policy qualifiers in this manner in order
to be PKIX compliant.
Concurrent Access
All PolicyQualifierInfo
objects must be immutable and
thread-safe. That is, multiple threads may concurrently invoke the
methods defined in this class on a single PolicyQualifierInfo
object (or more than one) with no ill effects. Requiring
PolicyQualifierInfo
objects to be immutable and thread-safe
allows them to be passed around to various pieces of code without
worrying about coordinating access.
Public Constructor Summary
PolicyQualifierInfo(byte[] encoded)
Creates an instance of
PolicyQualifierInfo from the
encoded bytes. |
Public Method Summary
final byte[] |
getEncoded()
Returns the ASN.1 DER encoded form of this
PolicyQualifierInfo . |
final byte[] |
getPolicyQualifier()
Returns the ASN.1 DER encoded form of the
qualifier
field of this PolicyQualifierInfo . |
final String |
getPolicyQualifierId()
Returns the
policyQualifierId field of this
PolicyQualifierInfo . |
String |
toString()
Return a printable representation of this
PolicyQualifierInfo . |
Inherited Method Summary
Public Constructors
public PolicyQualifierInfo (byte[] encoded)
Creates an instance of PolicyQualifierInfo
from the
encoded bytes. The encoded byte array is copied on construction.
Parameters
encoded | a byte array containing the qualifier in DER encoding |
---|
Throws
IOException | thrown if the byte array does not represent a valid and parsable policy qualifier |
---|
Public Methods
public final byte[] getEncoded ()
Returns the ASN.1 DER encoded form of this
PolicyQualifierInfo
.
Returns
- the ASN.1 DER encoded bytes (never
null
). Note that a copy is returned, so the data is cloned each time this method is called.
public final byte[] getPolicyQualifier ()
Returns the ASN.1 DER encoded form of the qualifier
field of this PolicyQualifierInfo
.
Returns
- the ASN.1 DER encoded bytes of the
qualifier
field. Note that a copy is returned, so the data is cloned each time this method is called.
public final String getPolicyQualifierId ()
Returns the policyQualifierId
field of this
PolicyQualifierInfo
. The policyQualifierId
is an Object Identifier (OID) represented by a set of nonnegative
integers separated by periods.
Returns
- the OID (never
null
)
public String toString ()
Return a printable representation of this
PolicyQualifierInfo
.
Returns
- a
String
describing the contents of thisPolicyQualifierInfo