Patents by Inventor Chin-Ning Yang

Chin-Ning Yang 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).

  • DES cipher processor for full duplex interleaving encryption/decryption service
    Patent number: 6324286
    Abstract: A full duplex DES cipher processor (DCP) supports to execute sixteen rounds of data encryption standard (DES) operation in four encryption modes and four decryption modes, namely: Electronic Code Book (ECB) mode, Cipher Block Chaining (CBC) mode, Cipher Feedback (CFB) mode, and Output Feedback (OFB) mode for both encryption and decryption. A DCP is composed of an I/O unit, an IV/key storage unit, a control unit, and an algorithm unit. The algorithm unit is used to encrypt/decrypt the incoming text message. The algorithm unit having a crypto engine allows encryption and decryption performed alternately, by sharing the same crypto engine. Since for crypto applications in communication services like T1, E1, V.35, the algorithm unit operation time is much shorter than the data I/O time; in other word, the algorithm unit is in the idle state mostly.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: November 27, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Yi-Sern Lai, I-Yao Chuang, Bor-Wen Chiou, Chin-Ning Yang