Embodiments of the present invention provide a cryptographic-based license management device comprising a license authority configured to generate a license in response to a product option request; an interface module having a plurality of product options that may be selectively enabled in response to...http://www.google.fr/patents/US6557105?utm_source=gb-gplus-shareBrevet US6557105 - Apparatus and method for cryptographic-based license management
Apparatus and method for cryptographic-based license management
