org.bouncycastle.cert

Class X509ExtensionUtils

java.lang.Object

org.bouncycastle.cert.X509ExtensionUtils

Direct Known Subclasses:

BcX509ExtensionUtils, JcaX509ExtensionUtils

public class X509ExtensionUtils
extends java.lang.Object

General utility class for creating calculated extensions using the standard methods.

Note: This class is not thread safe!

Constructor Summary

Constructors

Constructor and Description
X509ExtensionUtils(DigestCalculator calculator) Base constructor - for conformance to RFC 5280 use a calculator based on SHA-1.

Method Summary

Modifier and Type	Method and Description
org.bouncycastle.asn1.x509.AuthorityKeyIdentifier	createAuthorityKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo) Create an AuthorityKeyIdentifier from the passed in SubjectPublicKeyInfo.
org.bouncycastle.asn1.x509.AuthorityKeyIdentifier	createAuthorityKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo, org.bouncycastle.asn1.x509.GeneralNames generalNames, java.math.BigInteger serial) Create an AuthorityKeyIdentifier from the passed in arguments.
org.bouncycastle.asn1.x509.AuthorityKeyIdentifier	createAuthorityKeyIdentifier(X509CertificateHolder certHolder) Create an AuthorityKeyIdentifier from the passed in arguments.
org.bouncycastle.asn1.x509.SubjectKeyIdentifier	createSubjectKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo) Return a RFC 5280 type 1 key identifier.
org.bouncycastle.asn1.x509.SubjectKeyIdentifier	createTruncatedSubjectKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo) Return a RFC 5280 type 2 key identifier.

Methods inherited from class java.lang.Object

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

Constructor Detail

X509ExtensionUtils

public X509ExtensionUtils(DigestCalculator calculator)

Base constructor - for conformance to RFC 5280 use a calculator based on SHA-1.

Parameters:

calculator - a calculator for calculating subject key ids.

Method Detail

createAuthorityKeyIdentifier

public org.bouncycastle.asn1.x509.AuthorityKeyIdentifier createAuthorityKeyIdentifier(X509CertificateHolder certHolder)

Create an AuthorityKeyIdentifier from the passed in arguments.

Parameters:

certHolder - the issuer certificate that the AuthorityKeyIdentifier should refer to.

Returns:

an AuthorityKeyIdentifier.

createAuthorityKeyIdentifier

public org.bouncycastle.asn1.x509.AuthorityKeyIdentifier createAuthorityKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo)

Create an AuthorityKeyIdentifier from the passed in SubjectPublicKeyInfo.

Parameters:

publicKeyInfo - the SubjectPublicKeyInfo to base the key identifier on.

Returns:

an AuthorityKeyIdentifier.

createAuthorityKeyIdentifier

public org.bouncycastle.asn1.x509.AuthorityKeyIdentifier createAuthorityKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo,
                                                                                      org.bouncycastle.asn1.x509.GeneralNames generalNames,
                                                                                      java.math.BigInteger serial)

Create an AuthorityKeyIdentifier from the passed in arguments.

Parameters:

publicKeyInfo - the SubjectPublicKeyInfo to base the key identifier on.

generalNames - the general names to associate with the issuer cert's issuer.

serial - the serial number of the issuer cert.

Returns:

an AuthorityKeyIdentifier.

createSubjectKeyIdentifier

public org.bouncycastle.asn1.x509.SubjectKeyIdentifier createSubjectKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo)

Return a RFC 5280 type 1 key identifier. As in:

 (1) The keyIdentifier is composed of the 160-bit SHA-1 hash of the
 value of the BIT STRING subjectPublicKey (excluding the tag,
 length, and number of unused bits).
 

Parameters:

publicKeyInfo - the key info object containing the subjectPublicKey field.

Returns:

the key identifier.

createTruncatedSubjectKeyIdentifier

public org.bouncycastle.asn1.x509.SubjectKeyIdentifier createTruncatedSubjectKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo publicKeyInfo)

Return a RFC 5280 type 2 key identifier. As in:

 (2) The keyIdentifier is composed of a four bit type field with
 the value 0100 followed by the least significant 60 bits of the
 SHA-1 hash of the value of the BIT STRING subjectPublicKey.
 

Parameters:

publicKeyInfo - the key info object containing the subjectPublicKey field.

Returns:

the key identifier.