Patents by Inventor Thomas Fuhr

Thomas Fuhr 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).

  • Decipherable searchable encryption method, system for such an encryption
    Patent number: 8229112
    Abstract: A method for encrypting/decrypting a message includes the initial step of generating keys by the sub-steps of generating a public key; generating a decryption key; and generating a derivation key. For a first entity, the message is encrypted using the public key and a cipher. For a second entity, the cipher is decrypted to find the message. A trapdoor associated with said message is generated. The trapdoor corresponds to a derivative of the derivation key specific to the message. A test cipher is tested, using the trapdoor associated with the message, to determine if the test cipher is an encryption of the message using the public key.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: July 24, 2012
    Assignee: Gemalto SA
    Inventors: Thomas Fuhr, Pascal Paillier
  • DECIPHERABLE SEARCHABLE ENCRYPTION METHOD, SYSTEM FOR SUCH AN ENCRYPTION
    Publication number: 20090010436
    Abstract: A method for encrypting/decrypting a message includes the initial step of generating keys by the sub-steps of generating a public key; generating a decryption key; and generating a derivation key. For a first entity, the message is encrypted using the public key and a cipher. For a second entity, the cipher is decrypted to find the message. A trapdoor associated with said message is generated. The trapdoor corresponds to a derivative of the derivation key specific to the message. A test cipher is tested, using the trapdoor associated with the message, to determine if the test cipher is an encryption of the message using the public key.
    Type: Application
    Filed: March 8, 2007
    Publication date: January 8, 2009
    Applicant: GEMPLUS
    Inventors: Thomas Fuhr, Pascal Paillier