An on-line value bearing item (VBI) printing system that includes one or more cryptographic modules and a central database is disclosed. The cryptographic modules are capable of implementing the USPS Information Based Indicia Program Postal Security Device Performance Criteria and other required VBI...http://www.google.co.uk/patents/US7236956?utm_source=gb-gplus-sharePatent US7236956 - Role assignments in a cryptographic module for secure processing of value-bearing items
