Patent ID: 6550009
Filing Date: 2003-04-15
Classification: G11B,H04L

Abstract:
An encryption system, comprising a data encryption device for encrypting data, and an encrypted data decryption device for decrypting the encrypted data, and data that can be transmitted between or received by either or both of said device(s),said encrypted data decryption device comprising: means for driving a portable storage medium having medium specific information that is specific to each medium, means for sending a data request to said data encryption device, and means for decrypting data received from said data encryption device using a decryption key contained in said medium specific information; wherein said data encryption device comprises: a data base for storing medium specific information that is specific to each portable storage medium, means for obtaining a crypt key, paired with a decryption key in the medium specific information, corresponding to said data request by searching said data base, and means for encrypting and transmitting said requested data using said crypt key; wherein said pair of decryption key and the crypt key are a public key and a secret key respectively in a public key encryption method.