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2713718 - Public key fingerprint : java.lang.NullPointerException

Symptom

After a system copy or new installation of NetWeaver Java, where Sybase Database is being used and the ASE JDBC driver version is 16.0 SP03 PL05, the following error can be seen in NWA > Configuration > Certificates & Keys > TicketKeystore view for SAPLogonTicketKeypair and SAPLogonTicketKeypair-cert

Public key fingerprint : java.lang.NullPointerException: while trying to invoke the method iaik.asn1.ASN1Object.getComponentAt(int) of a null object returned from com.sap.engine.services.keystore.impl.util.EntryUtility.getPublicKeyASN(java.security.PublicKey)
at com.sap.engine.services.keystore.impl.util.EntryUtility.getPublicKeyMD5Fingerprint(EntryUtility.java:571)
at com.sap.engine.services.keystore.impl.util.EntryUtility.getStringRepresentation(EntryUtility.java:462)
at com.sap.engine.services.keystore.impl.util.EntryUtility.getStringRepresentation(EntryUtility.java:239)

..................................................

keypair2.png

It can be seen that keysize and public key fingerprint are both null:

keypair1.png

Deleting the keypair and recreating them ends with the same error. Also deleting the keystore view and restarting the server has the same affect. The newly created keypair certs have the same errors.

Additionally there is an issue with the SSO wizard, http://<host>:<port>/sso2, there is error:

Wrong certificate format. Certificate cannot be decoded

sso_wizard.png

The default trace may contain errors like these:

Certificate under alias [SAPLogonTicketKeypair] cannot be retrieved from keystore view [TicketKeystore]. Authentication stack: [sap.com/tc~lm~itsam~ui~mainframe~wd*webdynpro_resources_sap.com_tc~lm~itsam~ui~mainframe~wd].#

Authentication stack: [sap.com/tc~lm~itsam~ui~mainframe~wd*webdynpro_resources_sap.com_tc~lm~itsam~ui~mainframe~wd].
[EXCEPTION]
java.lang.Exception: Cannot read certificate from keystore.


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Environment

SAP NetWeaver 7.3
SAP enhancement package 1 for SAP NetWeaver 7.3
SAP NetWeaver 7.4
SAP NetWeaver 7.5

Product

SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP enhancement package 1 for SAP NetWeaver 7.3

Keywords

KBA , BC-JAS-SEC , Security, User Management , BC-DB-SYB , SAP Business Suite on Sybase ASE Database Platform , Problem

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