EncryptedAssertion encrypt encryptionkey with private rsa Key

[Johannes Frey]

Hi Folks,

I currently can't find a possibility to encrypt the encryption key of my EncryptedAssertion with my private rsa key...

Could please someone give me a hint how to do this?

When I search the Internet I only find how to encrypt it using the public key of the x509 certificate but I need to encrypt with the private key...

Thanks in advance and regards