Information recording medium, recording apparatus, information transmission system, and decryption apparatus
February 6, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesReceiver with interface for interaction with controller-decoder Software protection system using a single-key cryptosystem, a hardware-based authorization system and a secure coprocessor Remote access terminal security Cryptographic communication method and system Cryptographic protocol for secure communications 5307411 Method of and apparatus for encryption and decryption of communication data Method and apparatus for settlement of accounts by IC cards Data-protecting system Patent #: 5751805 InventorsApplicationNo. 019586 filed on 02/06/1998US Classes:380/44, Having particular key generator380/42, Data stream/substitution enciphering705/1, AUTOMATED ELECTRICAL FINANCIAL OR BUSINESS PRACTICE OR MANAGEMENT ARRANGEMENT705/18, Having security or user identification provision (password entry, etc.)705/44, Requiring authorization or authentication705/405Data protectionExaminersPrimary: Trammell, James P.Assistant: Nguyen, Hoang Attorney, Agent or FirmForeign Patent References
International ClassesG06F 017/60H04L 009/00 Foreign Application Priority Data1997-02-07 JPAbstractIn the invention, an information recording medium records encrypted information, encrypted key information obtained by encrypting key information for decrypting the encrypted information to obtain original information, and non-encrypted condition information used upon decrypting the encrypted information and recorded in the encrypted key information, and the encrypted information from the information recording medium is decrypted inside an IC card using the encrypted key information and condition information. Upon decrypting the encrypted information from the information recording medium, information that requires security protection or copyright protection can be prevented from being illicitly copied.Other References
Field of SearchPublic keyPARTICULAR ALGORITHMIC FUNCTION ENCODING Having particular key generator Multiple key level Having production of printed copy (e.g., printer, typewriter) Including particular structure or housing (e.g., display, keyboard) AUTOMATED ELECTRICAL FINANCIAL OR BUSINESS PRACTICE OR MANAGEMENT ARRANGEMENT Electronic shopping (e.g., remote ordering) Accounting Bill preparation Finance (e.g., banking, investment or credit) Including funds transfer or credit transaction Bill distribution or payment Remote banking (e.g., home banking) Requiring authorization or authentication Data protection Having security or user identification provision (password entry, etc.) | |
