Patents by Inventor Daniel Tiong Ho{umlaut over (k)} Tan

Daniel Tiong Ho{umlaut over (k)} Tan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Data encrypting and decrypting apparatus and method
    Patent number: 6490353
    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.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: December 3, 2002
    Inventor: Daniel Tiong Ho{umlaut over (k)} Tan