/**
* Basic Constructor - set up a calculator based on signerInfoGen with a ESSCertID calculated from
* the signer's associated certificate using the sha1DigestCalculator.
*
* @param sha1DigestCalculator calculator for SHA-1 of certificate.
* @param signerInfoGen the generator for the signer we are using.
* @param tsaPolicy tasPolicy to send.
* @throws IllegalArgumentException if calculator is not SHA-1 or there is no associated
* certificate for the signer,
* @throws TSPException if the signer certificate cannot be processed.
*/
public TimeStampTokenGenerator(
DigestCalculator sha1DigestCalculator,
final SignerInfoGenerator signerInfoGen,
ASN1ObjectIdentifier tsaPolicy)
throws IllegalArgumentException, TSPException {
this.signerInfoGen = signerInfoGen;
this.tsaPolicyOID = tsaPolicy;
if (!sha1DigestCalculator
.getAlgorithmIdentifier()
.getAlgorithm()
.equals(OIWObjectIdentifiers.idSHA1)) {
throw new IllegalArgumentException("Digest calculator must be for SHA-1");
}
if (!signerInfoGen.hasAssociatedCertificate()) {
throw new IllegalArgumentException("SignerInfoGenerator must have an associated certificate");
}
TSPUtil.validateCertificate(signerInfoGen.getAssociatedCertificate());
try {
OutputStream dOut = sha1DigestCalculator.getOutputStream();
dOut.write(signerInfoGen.getAssociatedCertificate().getEncoded());
dOut.close();
final ESSCertID essCertid = new ESSCertID(sha1DigestCalculator.getDigest());
this.signerInfoGen =
new SignerInfoGenerator(
signerInfoGen,
new CMSAttributeTableGenerator() {
public AttributeTable getAttributes(Map parameters)
throws CMSAttributeTableGenerationException {
AttributeTable table =
signerInfoGen.getSignedAttributeTableGenerator().getAttributes(parameters);
return table.add(
PKCSObjectIdentifiers.id_aa_signingCertificate,
new SigningCertificate(essCertid));
}
},
signerInfoGen.getUnsignedAttributeTableGenerator());
} catch (IOException e) {
throw new TSPException("Exception processing certificate.", e);
}
}
/**
* Basic Constructor - set up a calculator based on signerInfoGen with a ESSCertID calculated from
* the signer's associated certificate using the sha1DigestCalculator. If alternate values are
* required for id-aa-signingCertificate they should be added to the signerInfoGen object before
* it is passed in, otherwise a standard digest based value will be added.
*
* @param signerInfoGen the generator for the signer we are using.
* @param digestCalculator calculator for to use for digest of certificate.
* @param tsaPolicy tasPolicy to send.
* @param isIssuerSerialIncluded should issuerSerial be included in the ESSCertIDs, true if yes,
* by default false.
* @throws IllegalArgumentException if calculator is not SHA-1 or there is no associated
* certificate for the signer,
* @throws TSPException if the signer certificate cannot be processed.
*/
public TimeStampTokenGenerator(
final SignerInfoGenerator signerInfoGen,
DigestCalculator digestCalculator,
ASN1ObjectIdentifier tsaPolicy,
boolean isIssuerSerialIncluded)
throws IllegalArgumentException, TSPException {
this.signerInfoGen = signerInfoGen;
this.tsaPolicyOID = tsaPolicy;
if (!signerInfoGen.hasAssociatedCertificate()) {
throw new IllegalArgumentException("SignerInfoGenerator must have an associated certificate");
}
X509CertificateHolder assocCert = signerInfoGen.getAssociatedCertificate();
TSPUtil.validateCertificate(assocCert);
try {
OutputStream dOut = digestCalculator.getOutputStream();
dOut.write(assocCert.getEncoded());
dOut.close();
if (digestCalculator
.getAlgorithmIdentifier()
.getAlgorithm()
.equals(OIWObjectIdentifiers.idSHA1)) {
final ESSCertID essCertid =
new ESSCertID(
digestCalculator.getDigest(),
isIssuerSerialIncluded
? new IssuerSerial(
new GeneralNames(new GeneralName(assocCert.getIssuer())),
assocCert.getSerialNumber())
: null);
this.signerInfoGen =
new SignerInfoGenerator(
signerInfoGen,
new CMSAttributeTableGenerator() {
public AttributeTable getAttributes(Map parameters)
throws CMSAttributeTableGenerationException {
AttributeTable table =
signerInfoGen.getSignedAttributeTableGenerator().getAttributes(parameters);
if (table.get(PKCSObjectIdentifiers.id_aa_signingCertificate) == null) {
return table.add(
PKCSObjectIdentifiers.id_aa_signingCertificate,
new SigningCertificate(essCertid));
}
return table;
}
},
signerInfoGen.getUnsignedAttributeTableGenerator());
} else {
AlgorithmIdentifier digAlgID =
new AlgorithmIdentifier(digestCalculator.getAlgorithmIdentifier().getAlgorithm());
final ESSCertIDv2 essCertid =
new ESSCertIDv2(
digAlgID,
digestCalculator.getDigest(),
isIssuerSerialIncluded
? new IssuerSerial(
new GeneralNames(new GeneralName(assocCert.getIssuer())),
new ASN1Integer(assocCert.getSerialNumber()))
: null);
this.signerInfoGen =
new SignerInfoGenerator(
signerInfoGen,
new CMSAttributeTableGenerator() {
public AttributeTable getAttributes(Map parameters)
throws CMSAttributeTableGenerationException {
AttributeTable table =
signerInfoGen.getSignedAttributeTableGenerator().getAttributes(parameters);
if (table.get(PKCSObjectIdentifiers.id_aa_signingCertificateV2) == null) {
return table.add(
PKCSObjectIdentifiers.id_aa_signingCertificateV2,
new SigningCertificateV2(essCertid));
}
return table;
}
},
signerInfoGen.getUnsignedAttributeTableGenerator());
}
} catch (IOException e) {
throw new TSPException("Exception processing certificate.", e);
}
}