Bouncy Castle Cryptography Library 1.59

org.bouncycastle.tsp
Class TSPUtil

java.lang.Object
  extended byorg.bouncycastle.tsp.TSPUtil

public class TSPUtil
extends java.lang.Object


Constructor Summary
TSPUtil()
           
 
Method Summary
static java.util.Collection getSignatureTimestamps(SignerInformation signerInfo, DigestCalculatorProvider digCalcProvider)
          Fetches the signature time-stamp attributes from a SignerInformation object.
static void validateCertificate(X509CertificateHolder cert)
          Validate the passed in certificate as being of the correct type to be used for time stamping.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TSPUtil

public TSPUtil()
Method Detail

getSignatureTimestamps

public static java.util.Collection getSignatureTimestamps(SignerInformation signerInfo,
                                                          DigestCalculatorProvider digCalcProvider)
                                                   throws TSPValidationException
Fetches the signature time-stamp attributes from a SignerInformation object. Checks that the MessageImprint for each time-stamp matches the signature field. (see RFC 3161 Appendix A).

Parameters:
signerInfo - a SignerInformation to search for time-stamps
digCalcProvider - provider for digest calculators
Returns:
a collection of TimeStampToken objects
Throws:
TSPValidationException

validateCertificate

public static void validateCertificate(X509CertificateHolder cert)
                                throws TSPValidationException
Validate the passed in certificate as being of the correct type to be used for time stamping. To be valid it must have an ExtendedKeyUsage extension which has a key purpose identifier of id-kp-timeStamping.

Parameters:
cert - the certificate of interest.
Throws:
TSPValidationException - if the certificate fails on one of the check points.

Bouncy Castle Cryptography Library 1.59