Patent ID: 8195961

Claim:
A data encryption system, comprising: a data input site configured to compress and encrypt data using a shared encryption key and to transmit the compressed and encrypted data to an external network; a database server connected to the external network and configured to store, manage, transmit, and receive the compressed and encrypted data; a removable storage configured to store an identification code; and a client site configured to be operably linked with the removable storage, upon being linked to the removable storage, the client site being further configured to generate a local encryption key based on the identification code, the local encryption key being different from the shared encryption key, receive the compressed and encrypted data from the database server via the external network, decrypt and decompress the compressed and encrypted data using based-en the shared encryption key, re-encrypt the data using the local encryption key, save the re-encrypted encrypted data, decrypt the re-encrypted encrypted data using the local encryption key, when the data is to be displayed at the client site, and output the data decrypted using the local encryption key to a display device of the client site.