Data encryption system has iterative part block encryption and decryption key generation using base decryption and encryption keys

摘要

A data encryption system iteratively (i) creates an encryption key (V) from a base encryption key (BVS) for part of a data stream after selection of a preferred part key (TSi) using an encryption algorithm (VAi) to create an encrypted data block (VDi) and a decryption key (E) from a base decryption key (BES) for decryption to the original data block (Do) using a decryption key generator (ESGi).