Patents by Inventor Antony Peng Chew Ng

Antony Peng Chew Ng 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).

  • Patent number: 6909786
    Abstract: In a secure communication employing keys which require updating, all parties to the communication update their keys according to a clock at a suitable agreed-upon interval, and the keys are updated once each interval via a one-way function. The key to be used for a communication is the one that is current when the communication is established. In order to address clock-slip and slight timing differences across a communication channel, each party to a paired communication send a current interval index of their key to the other party. The remote index, i.e., the interval index which is remote to the receiving party, is compared against the local interval index, and the latter of the two interval indexes is used as the basis for generating the key. The party with the earlier index must therefore update the key iteratively until its index is concurrent with the later index. In addition, a public-key, private-key pair is generated for the purpose of supporting key updating.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: June 21, 2005
    Assignee: D'Crypt Private Limited
    Inventors: Antony Peng Chew Ng, Hwee-Boon Chew
  • Publication number: 20020090091
    Abstract: In a secure communication employing keys which require updating, all parties to the communication update their keys according to a clock at a suitable agreed-upon interval, and the keys are updated once each interval via a one-way function. The key to be used for a communication is the one that is current when the communication is established. In order to address clock-slip and slight timing differences across a communication channel, each party to a paired communication send a current interval index of their key to the other party. The remote index, i.e., the interval index which is remote to the receiving party, is compared against the local interval index, and the latter of the two interval indexes is used as the basis for generating the key. The party with the earlier index must therefore update the key iteratively until its index is concurrent with the later index. In addition, a public-key, private-key pair is generated for the purpose of supporting key updating.
    Type: Application
    Filed: January 9, 2001
    Publication date: July 11, 2002
    Applicant: D'Crypt Private Limited
    Inventors: Antony Peng Chew Ng, Hwee-Boon Chew