org.bouncycastle.cms
Class SignerInfoGenerator

java.lang.Object
  org.bouncycastle.cms.SignerInfoGenerator

public class SignerInfoGenerator

extends java.lang.Object

Constructor Summary

SignerInfoGenerator(SignerInfoGenerator original, CMSAttributeTableGenerator sAttrGen, CMSAttributeTableGenerator unsAttrGen)

Method Summary

org.bouncycastle.asn1.cms.SignerInfo	generate(org.bouncycastle.asn1.ASN1ObjectIdentifier contentType)
X509CertificateHolder	getAssociatedCertificate()
byte[]	getCalculatedDigest()
java.io.OutputStream	getCalculatingOutputStream()
org.bouncycastle.asn1.x509.AlgorithmIdentifier	getDigestAlgorithm()
int	getGeneratedVersion()
long	getPredictedEncodedLength(org.bouncycastle.asn1.ASN1ObjectIdentifier contentType) Return the exact encoded length of the SignerInfo this generator will produce for the given content type, or -1 when it cannot be predicted.
org.bouncycastle.asn1.cms.SignerIdentifier	getSID()
CMSAttributeTableGenerator	getSignedAttributeTableGenerator()
CMSAttributeTableGenerator	getUnsignedAttributeTableGenerator()
boolean	hasAssociatedCertificate()

Methods inherited from class java.lang.Object

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

Constructor Detail

SignerInfoGenerator

public SignerInfoGenerator(SignerInfoGenerator original,
                           CMSAttributeTableGenerator sAttrGen,
                           CMSAttributeTableGenerator unsAttrGen)

Method Detail

getSID

public org.bouncycastle.asn1.cms.SignerIdentifier getSID()

getGeneratedVersion

public int getGeneratedVersion()

hasAssociatedCertificate

public boolean hasAssociatedCertificate()

getAssociatedCertificate

public X509CertificateHolder getAssociatedCertificate()

getDigestAlgorithm

public org.bouncycastle.asn1.x509.AlgorithmIdentifier getDigestAlgorithm()

getCalculatingOutputStream

public java.io.OutputStream getCalculatingOutputStream()

generate

public org.bouncycastle.asn1.cms.SignerInfo generate(org.bouncycastle.asn1.ASN1ObjectIdentifier contentType)
                                              throws CMSException

Throws:

CMSException

getPredictedEncodedLength

public long getPredictedEncodedLength(org.bouncycastle.asn1.ASN1ObjectIdentifier contentType)

Return the exact encoded length of the SignerInfo this generator will produce for the given content type, or -1 when it cannot be predicted.

Prediction requires the underlying ContentSigner to implement FixedLengthContentSigner and, where attribute generators are present, that they produce attribute sets whose encoded length does not depend on the values supplied at signing time. The default CMS signed-attribute table qualifies: the messageDigest value's length is fixed by the digest algorithm and signingTime is a fixed-width UTCTime (until 2050). Definite-length consumers verify the eventual SignerInfo against this prediction, so a length-unstable attribute generator fails at generation time rather than silently corrupting output.

getCalculatedDigest

public byte[] getCalculatedDigest()

getSignedAttributeTableGenerator

public CMSAttributeTableGenerator getSignedAttributeTableGenerator()

getUnsignedAttributeTableGenerator

public CMSAttributeTableGenerator getUnsignedAttributeTableGenerator()