Patents by Inventor Phillip Hawkes

Phillip Hawkes 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).

  • Stream cipher encryption and message authentication
    Patent number: 7623656
    Abstract: Stream cipher encryption and message authentication. Stream cipher encryption is performed by generating a keystream at the transmitting end from a state value, applying the keystream to plaintext to generate an encrypted message block having at least a portion of the plaintext converted to ciphertext, and updating the state value as a function of said at least a portion of the plaintext. Stream cipher decryption is performed by generating a keystream at the receiving end from the same state value, applying the keystream to the encrypted message block to convert the ciphertext to plaintext, and updating the state value as a function of the plaintext. Message authentication techniques are also described.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: November 24, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Phillip Hawkes, Michael Paddon, Gregory Gordon Rose
  • Stream cipher encryption and message authentication
    Publication number: 20050213752
    Abstract: Stream cipher encryption and message authentication. Stream cipher encryption is performed by generating a keystream at the transmitting end from a state value, applying the keystream to plaintext to generate an encrypted message block having at least a portion of the plaintext converted to ciphertext, and updating the state value as a function of said at least a portion of the plaintext. Stream cipher decryption is performed by generating a keystream at the receiving end from the same state value, applying the keystream to the encrypted message block to convert the ciphertext to plaintext, and updating the state value as a function of the plaintext. Message authentication techniques are also described.
    Type: Application
    Filed: February 17, 2005
    Publication date: September 29, 2005
    Inventors: Phillip Hawkes, Michael Paddon, Gregory Rose