How to add PrivateKeyUsage extension to a certificate using bouncycastle in java?
-
28-09-2019 - |
Question
i have an X509Certificate that i want to add extensions to... i want to add the PrivateKeyUsage extension, but i dont know how to create a PrivateKeyUsage object or how to give it notBefore & notAfter values ... thanks
Solution
Date from = new Date();
Date to = new Date(System.currentTimeMillis()+ 30*1000*60*60l);
ASN1EncodableVector v = new ASN1EncodableVector();
DERGeneralizedTime fromTime = new DERGeneralizedTime(from);
v.add(new DERTaggedObject(false, 0, fromTime));
DERGeneralizedTime toTime = new DERGeneralizedTime(to);
v.add(new DERTaggedObject(false, 1, toTime));
DERObject o = new DERSequence(v);
PrivateKeyUsagePeriod pkup = PrivateKeyUsagePeriod.getInstance(o);
v3CertGen.addExtension(x509Extensions.PrivateKeyUsagePeriod, false, pkup);
OTHER TIPS
You can do something like this,
Date notBeforeDate = new Date();
Date notAfterDate = new Date(System.currentMillis() + 24L*3600*365*1000);
PrivateKeyUsagePeriod pkup = new PrivateKeyUsagePeriod(notBeforeDate,
notAfterDate);
V3Extension[] v3 = {pkup};
cert = CertificateFactory.createCertificate(subject, kp.getPublic(), issuer,
kp.getPrivate(), algorithm, 1, v3);
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow