36. The system of claim 35 , wherein: determining a status for the digital signature includes selecting a status from a plurality of predefined statuses.
36. The system of claim 35 , wherein: determining a status for the digital signature includes selecting a status from a plurality of predefined statuses. 40. The system of claim 36 , wherein one or more of the predefined statuses indicate that the signer of the digital signature is identified or unknown.