Microprocessor intended particularly for executing the calculation algorithms of a public code encoding system Patent #: 4807288
ApplicationNo. 303084 filed on 09/07/1994
US Classes:705/59, Licensing380/30, Public key705/55, Requiring a supplemental attachment or input (e.g., dongle) to open713/158, Revocation or expiration713/173Pre-loaded with certificate
ExaminersPrimary: Cain, David
Attorney, Agent or Firm
International ClassH04K 001/00
AbstractAn integrated circuit component for enforcing licensing restrictions. Such enforcement is performed through remote transmission of access privileges for executing a licensed program from the integrated circuit component to another similar component. The integrated circuit component comprising a non-volatile memory for storing a uniquely designated key pair, an authentication device certificate and a manufacturer public key along with cryptographic algorithms, a processor for executing the cryptographic algorithms in order to process information inputted into the integrated circuit component and for transmitting the processed information into volatile memory and a random number generator for generating the uniquely designated key pair internally within the integrated circuit component.
Field of SearchPublic key