org.spongycastle.tsp.cms

Class CMSTimeStampedDataParser

java.lang.Object

org.spongycastle.cms.CMSContentInfoParser

org.spongycastle.tsp.cms.CMSTimeStampedDataParser

public class CMSTimeStampedDataParser
extends CMSContentInfoParser

Field Summary

Fields inherited from class org.spongycastle.cms.CMSContentInfoParser

_contentInfo, _data

Constructor Summary

Constructors

Constructor and Description
CMSTimeStampedDataParser(byte[] baseData)
CMSTimeStampedDataParser(java.io.InputStream in)

Method Summary

Modifier and Type	Method and Description
byte[]	calculateNextHash(DigestCalculator calculator)
java.io.InputStream	getContent()
java.net.URI	getDataUri()
java.lang.String	getFileName()
java.lang.String	getMediaType()
DigestCalculator	getMessageImprintDigestCalculator(DigestCalculatorProvider calculatorProvider) Returns an appropriately initialised digest calculator based on the message imprint algorithm described in the first time stamp in the TemporalData for this message.
org.spongycastle.asn1.cms.AttributeTable	getOtherMetaData()
TimeStampToken[]	getTimeStampTokens()
void	initialiseMessageImprintDigestCalculator(DigestCalculator calculator) Initialise the passed in calculator with the MetaData for this message, if it is required as part of the initial message imprint calculation.
void	validate(DigestCalculatorProvider calculatorProvider, byte[] dataDigest) Validate the digests present in the TimeStampTokens contained in the CMSTimeStampedData.
void	validate(DigestCalculatorProvider calculatorProvider, byte[] dataDigest, TimeStampToken timeStampToken) Validate the passed in timestamp token against the tokens and data present in the message.

Methods inherited from class org.spongycastle.cms.CMSContentInfoParser

close

Methods inherited from class java.lang.Object

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

Constructor Detail

CMSTimeStampedDataParser

public CMSTimeStampedDataParser(java.io.InputStream in)
                         throws CMSException

Throws:

CMSException

CMSTimeStampedDataParser

public CMSTimeStampedDataParser(byte[] baseData)
                         throws CMSException

Throws:

CMSException

Method Detail

calculateNextHash

public byte[] calculateNextHash(DigestCalculator calculator)
                         throws CMSException

Throws:

CMSException

getContent

public java.io.InputStream getContent()

getDataUri

public java.net.URI getDataUri()
                        throws java.net.URISyntaxException

Throws:

java.net.URISyntaxException

getFileName

public java.lang.String getFileName()

getMediaType

public java.lang.String getMediaType()

getOtherMetaData

public org.spongycastle.asn1.cms.AttributeTable getOtherMetaData()

initialiseMessageImprintDigestCalculator

public void initialiseMessageImprintDigestCalculator(DigestCalculator calculator)
                                              throws CMSException

Initialise the passed in calculator with the MetaData for this message, if it is required as part of the initial message imprint calculation.

Parameters:

calculator - the digest calculator to be initialised.

Throws:

CMSException - if the MetaData is required and cannot be processed

getMessageImprintDigestCalculator

public DigestCalculator getMessageImprintDigestCalculator(DigestCalculatorProvider calculatorProvider)
                                                   throws OperatorCreationException

Returns an appropriately initialised digest calculator based on the message imprint algorithm described in the first time stamp in the TemporalData for this message. If the metadata is required to be included in the digest calculation, the returned calculator will be pre-initialised.

Parameters:

calculatorProvider - a provider of DigestCalculator objects.

Returns:

an initialised digest calculator.

Throws:

OperatorCreationException - if the provider is unable to create the calculator.

getTimeStampTokens

public TimeStampToken[] getTimeStampTokens()
                                    throws CMSException

Throws:

CMSException

validate

public void validate(DigestCalculatorProvider calculatorProvider,
                     byte[] dataDigest)
              throws ImprintDigestInvalidException,
                     CMSException

Validate the digests present in the TimeStampTokens contained in the CMSTimeStampedData.

Parameters:

calculatorProvider - provider for digest calculators

dataDigest - the calculated data digest for the message

Throws:

ImprintDigestInvalidException - if an imprint digest fails to compare

CMSException - if an exception occurs processing the message.

validate

public void validate(DigestCalculatorProvider calculatorProvider,
                     byte[] dataDigest,
                     TimeStampToken timeStampToken)
              throws ImprintDigestInvalidException,
                     CMSException

Validate the passed in timestamp token against the tokens and data present in the message.

Parameters:

calculatorProvider - provider for digest calculators

dataDigest - the calculated data digest for the message.

timeStampToken - the timestamp token of interest.

Throws:

ImprintDigestInvalidException - if the token is not present in the message, or an imprint digest fails to compare.

CMSException - if an exception occurs processing the message.