Patents by Inventor Alexander TSCHACHE

Alexander TSCHACHE 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).

  • METHOD FOR REVOKING A GROUP OF CERTIFICATES
    Publication number: 20150256348
    Abstract: A method is described for revoking a group of certificates, each of which includes a key, for an authenticated communication between one first subscriber and at least one second subscriber, one first key and one revocation value, with the aid of which the keys of the group of certificates may be calculated from the first key, being transmitted for the purpose of revocation to the at least one second subscriber.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Inventor: Alexander TSCHACHE