Hi there, I'm getting an NPE, Java 8:
at sun.security.provider.certpath.OCSPResponse.verify(OCSPResponse.java:452) at sun.security.provider.certpath.OCSP.check(OCSP.java:290) at sun.security.provider.certpath.RevocationChecker.checkOCSP(RevocationChecker.java:716) at sun.security.provider.certpath.RevocationChecker.check(RevocationChecker.java:357) at sun.security.provider.certpath.RevocationChecker.check(RevocationChecker.java:337) at sun.security.provider.certpath.PKIXMasterCertPathValidator.validate(PKIXMasterCertPathValidator.java:119) at sun.security.provider.certpath.PKIXCertPathValidator.validate(PKIXCertPathValidator.java:215) at sun.security.provider.certpath.PKIXCertPathValidator.validate(PKIXCertPathValidator.java:143) at sun.security.provider.certpath.PKIXCertPathValidator.engineValidate(PKIXCertPathValidator.java:79) at java.security.cert.CertPathValidator.validate(CertPathValidator.java:292) and Java 9: at sun.security.provider.certpath.OCSPResponse.verify(OCSPResponse.java:451) at sun.security.provider.certpath.OCSP.check(OCSP.java:290) at sun.security.provider.certpath.RevocationChecker.checkOCSP(RevocationChecker.java:749) at sun.security.provider.certpath.RevocationChecker.check(RevocationChecker.java:363) at sun.security.provider.certpath.RevocationChecker.check(RevocationChecker.java:337) at sun.security.provider.certpath.PKIXMasterCertPathValidator.validate(PKIXMasterCertPathValidator.java:125) at sun.security.provider.certpath.PKIXCertPathValidator.validate(PKIXCertPathValidator.java:212) at sun.security.provider.certpath.PKIXCertPathValidator.validate(PKIXCertPathValidator.java:140) at sun.security.provider.certpath.PKIXCertPathValidator.engineValidate(PKIXCertPathValidator.java:79) at java.security.cert.CertPathValidator.validate(CertPathValidator.java:292) It is happening because List<X509CertImpl> certs contains 10 null entries, so cert is null at: KeyIdentifier certKeyId = cert.getSubjectKeyId(); The last bit of debug before this failure is: certpath: BasicChecker.updateState issuer: CN=UTN-USERFirst-Object, OU=http://www.usertrust.com, O=The USERTRUST Network, L=Salt Lake City, ST=UT, C=US; subject: CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, ST=Greater Manchester, C=GB; serial#: 21852375853972585523540355797488858555 certpath: -checker6 validation succeeded certpath: -Using checker7 ... [sun.security.provider.certpath.RevocationChecker] certpath: connecting to OCSP service at: http://ocsp.usertrust.com certpath: OCSP response status: SUCCESSFUL certpath: OCSP response type: basic certpath: Responder's key ID: 2b:c3:46:ab:ba:0e:c9:65:2a:46:d1:79:47:c4:62:e2:e1:da:fc:b8 certpath: OCSP response produced at: Sat Jul 25 19:49:44 EST 2015 certpath: OCSP number of SingleResponses: 1 certpath: Status of certificate (with serial number 21852375853972585523540355797488858555) is: GOOD In OCSPResponse constructor, i think its just setting certs = new ArrayList<X509CertImpl>(); // line 386 I'm new to this certpath stuff, so I hope that's intelligible. cheers .. Jason