Patents by Inventor Martin Tessmer

Martin Tessmer 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).

  • Authenticating a telecommunication terminal in a telecommunication network
    Patent number: 9184913
    Abstract: A method for authenticating a telecommunications terminal having an identity module includes: storing a first private key, a first public key and a first signature, the first signature being based on signing the first public key using a second private key; generating identity information and a second signature, the second signature being based on signing the identity information using the first private key; transmitting the first public key, the identity information, and the first and second signatures to a server device; verifying, by the server device, the authenticity of the first public key using a second public key; and verifying, by the server device, the authenticity of the identity information using the verified first public key. The identity information includes International Mobile Subscriber Identity (IMSI) information.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 10, 2015
    Assignee: DEUTSCHE TELEKOM AG
    Inventors: Martin Froels, Martin Tessmer
  • AUTHENTICATING A TELECOMMUNICATION TERMINAL IN A TELECOMMUNICATION NETWORK
    Publication number: 20140219448
    Abstract: A method for authenticating a telecommunications terminal having an identity module includes: storing a first private key, a first public key and a first signature, the first signature being based on signing the first public key using a second private key; generating identity information and a second signature, the second signature being based on signing the identity information using the first private key; transmitting the first public key, the identity information, and the first and second signatures to a server device; verifying, by the server device, the authenticity of the first public key using a second public key; and verifying, by the server device, the authenticity of the identity information using the verified first public key. The identity information includes International Mobile Subscriber Identity (IMSI) information.
    Type: Application
    Filed: August 22, 2012
    Publication date: August 7, 2014
    Applicant: DEUTSCHE TELEKOM AG
    Inventors: Martin Froels, Martin Tessmer