Patent Number: 6,490,353

Title: Data encrypting and decrypting apparatus and method

Abstract: A crytography method of encrypting data is disclosed. The method provides for creating or selecting a master key. Thereafter, the data to be encrypted is segmented into data blocks of equal or variable lengths. For each data block a sub-key of an arbitrary starting position is selected from a pre-defined set of arbitrary positions and of matched or unmatched length from the master key, where the master key length is selected from a pre-defined set of arbitrary lengths. Having acquired the sub-key for each data block, each data block is encrypted using its sub-key and an encryption algorithm.

Inventors: Tan; Daniel Tiong Hok (Singapore 309892, SG)


International Classification: H04L 9/08 (20060101); H04K 001/02 ()

Expiration Date: 12/03/2019