Cannot Log in to Admin UI to Complete Registration: Handshake Failures in SMPS.log

Products

• CA Single Sign On Secure Proxy Server (SiteMinder)
• CA Single Sign On SOA Security Manager (SiteMinder)
• CA Single Sign-On

Issue/Introduction

After completing the XPSRegClient portion of Admin UI registration, the client name specified in the XPSRegClient command cannot log into the Admin UI to complete the registration.  The Policy Server's smps.log is showing handshake failures upon each login attempt.

Environment

Release: MSPSSO99000-12.8-Single Sign-On-for Business Users-MSP
Component:

Cause

Customer had earlier applied a patch to the Admin UI host OS that caused the RNG daemon (random number generator) to stop running.  The caused entropy to run low, which can cause a wide range of symptoms whenever a process calls for entropy, such as a login attempt which requires encryption.

Resolution

Restoring the RNG daemon resolved the issue.