Issue
We are using Siteminder as IDP and 3rd party provider as SP. Everything is working fine but when we try to encrypt assertion they are getting the error :
[Total Assertions to Encrypt: 1]
[Cert Serial# used: def0208d950e1fa7]
[Error Encrypting Assertion:0 Encoding is null.]
[Failed to Encrypt Assertion in Response: ...
Environment
Policy Server 12.51CR08
Cause
You face this issue in the Policy Server 12.51CR08 because of an internal problem when encrypting the assertion.
This internal problem is fixed in Policy Server 1251CR10
Resolution
Upgrade the Policy Server to at least 1251CR10.
Additional Information