Digital Signature System after Goldwasser, Micali and Rivest with null for empty message?

Question

Can i save The null pointer instead of an empty message as the leaf in the signature path of the GMR system?

Any hints appreciated!

Gerrit

Answer 1

Now I excluded the empty message from signing with GMR Digital Signature System. I do not think, that a NULL Pointer gives a valid signature path/tree.

Answer 2

You here tagged java,So if you want to assign null to any class variable that is possible...