Patents by Inventor Medhi ZIAT

Medhi ZIAT 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).

  • Patent number: 9621356
    Abstract: Disclosed herein is a technique for revoking a root certificate from at least one client device. In particular, the technique involves causing a secure element—which is included in the at least one client device and is configured to store the root certificate as well as at least one backup root certificate—to permanently disregard the root certificate and prevent the at least one client device from utilizing the specific root certificate. According to one embodiment, this revocation occurs in response to a receiving a revocation message that directly targets the root certificate, where the message includes at least two levels of authentication that are verified by the secure element prior to carrying out the revocation. Once the root certificate is revoked, the secure element can continue to utilize the at least one backup root certificate, while permanently disregarding the revoked root certificate.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: April 11, 2017
    Assignee: Apple Inc.
    Inventors: Yousuf H. Vaid, Christopher B. Sharp, Medhi Ziat, Li Li, Jerrold Von Hauck, Ramiro Sarmiento, Jean-Marc Padova
  • Publication number: 20150256345
    Abstract: Disclosed herein is a technique for revoking a root certificate from at least one client device. In particular, the technique involves causing a secure element—which is included in the at least one client device and is configured to store the root certificate as well as at least one backup root certificate—to permanently disregard the root certificate and prevent the at least one client device from utilizing the specific root certificate. According to one embodiment, this revocation occurs in response to a receiving a revocation message that directly targets the root certificate, where the message includes at least two levels of authentication that are verified by the secure element prior to carrying out the revocation. Once the root certificate is revoked, the secure element can continue to utilize the at least one backup root certificate, while permanently disregarding the revoked root certificate.
    Type: Application
    Filed: May 15, 2014
    Publication date: September 10, 2015
    Applicant: Apple Inc.
    Inventors: Yousuf H. VAID, Christopher B. SHARP, Medhi ZIAT, Li LI, Jerrold Von HAUCK, Ramiro SARMIENTO, Jean-Marc PADOVA