Patents by Inventor Benjamin J. Wester

Benjamin J. Wester 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).

  • Secure messaging with read-undeniability and deletion-verifiability
    Patent number: 8527769
    Abstract: A cryptographically-secure component is used to provide read-undeniability and deletion-verifiability for messaging applications. When a messaging application of a sending node desires to send a message to a messaging application of a receiving node, the sending node requests an encryption key from the receiving node. The cryptographically-secure component of the receiving node generates an encryption key that is bound to a state of the receiving node. The messaging application of the sending node encrypts the message using the encryption key and sends the encrypted message to the messaging application of the receiving node. Because the encryption key used to encrypt the message is bound to the state associated with reading the message by the cryptographically-secure component, if the receiving node desires to decrypt and read the encrypted message, the receiving node may advance its state to the bound state to retrieve the decryption key.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: September 3, 2013
    Assignee: Microsoft Corporation
    Inventors: Ramakrishna R. Kotla, Benjamin J. Wester
  • SECURE MESSAGING WITH READ-UNDENIABILITY AND DELETION-VERIFIABILITY
    Publication number: 20120198235
    Abstract: A cryptographically-secure component is used to provide read-undeniability and deletion-verifiability for messaging applications. When a messaging application of a sending node desires to send a message to a messaging application of a receiving node, the sending node requests an encryption key from the receiving node. The cryptographically-secure component of the receiving node generates an encryption key that is bound to a state of the receiving node. The messaging application of the sending node encrypts the message using the encryption key and sends the encrypted message to the messaging application of the receiving node. Because the encryption key used to encrypt the message is bound to the state associated with reading the message by the cryptographically-secure component, if the receiving node desires to decrypt and read the encrypted message, the receiving node may advance its state to the bound state to retrieve the decryption key.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 2, 2012
    Applicant: Microsoft Corporation
    Inventors: Ramakrishna R. Kotla, Benjamin J. Wester