Patents by Inventor Elias Athanasopoulos

Elias Athanasopoulos 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: 11972031
    Abstract: Some embodiments are directed to secure communication with a server from a device. The device is configured to decrypt an encrypted message in a secure mode with a private key, and to display secret shared with the user together with the decrypted message on a display of the device to indicate to the user that the message is being displayed by software running in the secure mode.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: April 30, 2024
    Assignee: Koninklijke Philips N.V.
    Inventors: Hendrik Jaap Bos, Elias Athanasopoulos, Radhesh Krishnan Konoth, Kaveh Razavi
  • Publication number: 20220391543
    Abstract: Some embodiments are directed to secure communication with a server from a device. The device is configured to decrypt an encrypted message in a secure mode with a private key, and to display secret shared with the user together with the decrypted message on a display of the device to indicate to the user that the message is being displayed by software running in the secure mode.
    Type: Application
    Filed: November 3, 2020
    Publication date: December 8, 2022
    Inventors: Hendrik Jaap BOS, Elias ATHANASOPOULOS, Radhesh Krishnan KONOTH, Kaveh RAZAVI
  • Patent number: 10367797
    Abstract: Methods, systems, and media for automatically authenticating a user account using multiple services are provided. In accordance with some embodiments of the disclosed subject matter, methods for authenticating a user using multiple services are provided, the methods comprising: receiving, from a client device, first credentials for a target service account; authenticating the target service account based on the first credentials; issuing a redirecting request that directs the client device to at least one vouching service in response to authenticating the target service account; receiving a vouching response indicating that the client device has authenticated a vouching service account with the at least one vouching service, wherein the vouching response includes a vouching token; and providing the client device with access to the target service account in response to determining that the vouching service account is associated with the target service account.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 30, 2019
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Angelos D. Keromytis, Elias Athanasopoulos, Georgios Kontaxis, Georgios Portokalidis
  • Publication number: 20160255067
    Abstract: Methods, systems, and media for automatically authenticating a user account using multiple services are provided. In accordance with some embodiments of the disclosed subject matter, methods for authenticating a user using multiple services are provided, the methods comprising: receiving, from a client device, first credentials for a target service account; authenticating the target service account based on the first credentials; issuing a redirecting request that directs the client device to at least one vouching service in response to authenticating the target service account; receiving a vouching response indicating that the client device has authenticated a vouching service account with the at least one vouching service, wherein the vouching response includes a vouching token; and providing the client device with access to the target service account in response to determining that the vouching service account is associated with the target service account.
    Type: Application
    Filed: August 7, 2014
    Publication date: September 1, 2016
    Inventors: Angelos D. Keromytis, Elias Athanasopoulos, Georgios Kontaxis, Georgios Portokalidis
  • Patent number: 8059541
    Abstract: An end-host based network management system and methods are described. The methods are performed independently at each end-host within the network based on data on local flows which is shared between end-hosts. In an embodiment, an end-host shares data on constrained local flows with other end-hosts and receives such data from other end-hosts. Based on this data, the end-host determines which flows from other nodes are competing for a shared resource with a constrained local flow and allocates the capacity of the shared resource between all the competing flows. This allocation is then enforced for the local flow by the end-host. Other end-hosts with competing flows perform similar methods and through an iterative process the contention for the shared resource is resolved and the utilization of the shared resource is optimized.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: November 15, 2011
    Assignee: Microsoft Corporation
    Inventors: Thomas Karagiannis, Christos Gkantsidis, Peter Key, Elias Athanasopoulos
  • Publication number: 20090290491
    Abstract: An end-host based network management system and methods are described. The methods are performed independently at each end-host within the network based on data on local flows which is shared between end-hosts. In an embodiment, an end-host shares data on constrained local flows with other end-hosts and receives such data from other end-hosts. Based on this data, the end-host determines which flows from other nodes are competing for a shared resource with a constrained local flow and allocates the capacity of the shared resource between all the competing flows. This allocation is then enforced for the local flow by the end-host. Other end-hosts with competing flows perform similar methods and through an iterative process the contention for the shared resource is resolved and the utilization of the shared resource is optimized.
    Type: Application
    Filed: May 22, 2008
    Publication date: November 26, 2009
    Applicant: Microsoft Corporation
    Inventors: Thomas Karagiannis, Christos Gkantsidis, Peter Key, Elias Athanasopoulos