throws IOException, OperatorCreationException, CertificateException
{
String signatureAlgorithm = "SHA1withRSA";
X500Name issuerName;
if (issuerCertificate != null) {
issuerName = new X509CertificateHolder(issuerCertificate.getEncoded()).getIssuer();
} else {
issuerName = new X500Name(subjectDn);
}
RSAPublicKey rsaPubKey = (RSAPublicKey)subjectPublicKey;
RSAKeyParameters rsaSpec = new RSAKeyParameters(false, rsaPubKey.getModulus(), rsaPubKey.getPublicExponent());
SubjectPublicKeyInfo subjectPublicKeyInfo =
SubjectPublicKeyInfoFactory.createSubjectPublicKeyInfo(rsaSpec);
DigestCalculator digestCalc = new JcaDigestCalculatorProviderBuilder()
.setProvider("BC").build().get(CertificateID.HASH_SHA1);
X509v3CertificateBuilder certificateGenerator = new X509v3CertificateBuilder(
issuerName
, new BigInteger(128, new SecureRandom())
, notBefore
, notAfter
, new X500Name(subjectDn)
, subjectPublicKeyInfo
);
X509ExtensionUtils exUtils = new X509ExtensionUtils(digestCalc);
SubjectKeyIdentifier subKeyId = exUtils.createSubjectKeyIdentifier(subjectPublicKeyInfo);
AuthorityKeyIdentifier autKeyId = (issuerCertificate != null)
? exUtils.createAuthorityKeyIdentifier(new X509CertificateHolder(issuerCertificate.getEncoded()))
: exUtils.createAuthorityKeyIdentifier(subjectPublicKeyInfo);
certificateGenerator.addExtension(Extension.subjectKeyIdentifier, false, subKeyId);
certificateGenerator.addExtension(Extension.authorityKeyIdentifier, false, autKeyId);
if (caFlag) {
BasicConstraints bc;
if (-1 == pathLength) {
bc = new BasicConstraints(true);
} else {
bc = new BasicConstraints(pathLength);
}
certificateGenerator.addExtension(Extension.basicConstraints, false, bc);
}
if (null != crlUri) {
int uri = GeneralName.uniformResourceIdentifier;
DERIA5String crlUriDer = new DERIA5String(crlUri);
GeneralName gn = new GeneralName(uri, crlUriDer);
DERSequence gnDer = new DERSequence(gn);
GeneralNames gns = GeneralNames.getInstance(gnDer);
DistributionPointName dpn = new DistributionPointName(0, gns);
DistributionPoint distp = new DistributionPoint(dpn, null, null);
DERSequence distpDer = new DERSequence(distp);
certificateGenerator.addExtension(Extension.cRLDistributionPoints, false, distpDer);
}
if (null != ocspUri) {
int uri = GeneralName.uniformResourceIdentifier;
GeneralName ocspName = new GeneralName(uri, ocspUri);
AuthorityInformationAccess authorityInformationAccess =
new AuthorityInformationAccess(X509ObjectIdentifiers.ocspAccessMethod, ocspName);
certificateGenerator.addExtension(Extension.authorityInfoAccess, false, authorityInformationAccess);
}
if (null != keyUsage) {
certificateGenerator.addExtension(Extension.keyUsage, true, keyUsage);
}
JcaContentSignerBuilder signerBuilder = new JcaContentSignerBuilder(signatureAlgorithm);
signerBuilder.setProvider("BC");
X509CertificateHolder certHolder =
certificateGenerator.build(signerBuilder.build(issuerPrivateKey));
/*
* Next certificate factory trick is needed to make sure that the
* certificate delivered to the caller is provided by the default