Patents by Inventor Pasan Hapuarachchi

Pasan Hapuarachchi 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: 11936684
    Abstract: A user device may receive (e.g., when proximate to the first access device), from an intervening device, device identification data for a first access device. A message may be received from a second access device via the intervening device. The message may include a digital signature generated based at least in part on second access device identification data. The user device may validate the message utilizing the digital signature and a public key. If the message is invalid, the user device may discard the message. If the message is valid, (e.g., unaltered), the user device may determine that the user has not confirmed an intent to interact with the second access device and may terminate a[n] further interaction with the second access device accordingly.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: March 19, 2024
    Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
    Inventors: Brian Sullivan, Quan Wang, Yuexi Chen, Christian Aabye, Christian Flurscheim, Pasan Hapuarachchi
  • Publication number: 20230247047
    Abstract: Systems, methods, and devices are disclosed for preventing relay attacks. A user device may receive (e.g., when proximate to the first access device), from an intervening device, device identification data for a first access device. A message may be received from a second access device via the intervening device. The message may include a digital signature generated based at least in part on second access device identification data. The user device may validate the message utilizing the digital signature and a public key. If the message is invalid, the user device may discard the message. If the message is valid, (e.g., unaltered), the user device may determine that the user has not confirmed an intent to interact with the second access device and may terminate an further interaction with the second access device accordingly.
    Type: Application
    Filed: March 30, 2023
    Publication date: August 3, 2023
    Applicant: Visa International Service Association
    Inventors: Brian Sullivan, Quan Wang, Yuexi Chen, Christian Aabye, Christian Flurscheim, Pasan Hapuarachchi
  • Patent number: 11647042
    Abstract: Systems, methods, and devices are disclosed for preventing relay attacks. A user device may receive (e.g., when proximate to the first access device), from an intervening device, device identification data for a first access device. A message may be received from a second access device via the intervening device. The message may include a digital signature generated based at least in part on second access device identification data. The user device may validate the message utilizing the digital signature and a public key. If the message is invalid, the user device may discard the message. If the message is valid, (e.g., unaltered), the user device may determine that the user has not confirmed an intent to interact with the second access device and may terminate an further interaction with the second access device accordingly.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: May 9, 2023
    Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
    Inventors: Brian Sullivan, Quan Wang, Yuexi Chen, Christian Aabye, Christian Flurscheim, Pasan Hapuarachchi
  • Publication number: 20210126939
    Abstract: Systems, methods, and devices are disclosed for preventing relay attacks. A user device may receive (e.g., when proximate to the first access device), from an intervening device, device identification data for a first access device. A message may be received from a second access device via the intervening device. The message may include a digital signature generated based at least in part on second access device identification data. The user device may validate the message utilizing the digital signature and a public key. If the message is invalid, the user device may discard the message. If the message is valid, (e.g., unaltered), the user device may determine that the user has not confirmed an intent to interact with the second access device and may terminate an further interaction with the second access device accordingly.
    Type: Application
    Filed: November 28, 2018
    Publication date: April 29, 2021
    Inventors: Brian Sullivan, Quan Wang, Yuexi Chen, Christian Aabye, Christian Flurscheim, Pasan Hapuarachchi
  • Publication number: 20140298223
    Abstract: The present invention improves upon the existing touch based systems by introducing new mechanisms of interaction with the user that can improve the productivity of users that are creating and modifying diagrams and figures on such touch based systems. More specifically, without leaving the draw grid, the invention allows the user to seamlessly copy one or more objects, delete one or more objects, change the type and end type of a connector between two objects, change the color of an object, and create a sequence diagram. The above mentioned control gesture operations do not require the user to click or select a button that is outside the draw grid to achieve a particular control objective.
    Type: Application
    Filed: February 4, 2014
    Publication date: October 2, 2014
    Inventors: Peter Duong, Pasan Hapuarachchi, Anthony Duong
  • Patent number: 7447494
    Abstract: The invention relates to a secure wireless authorization system by which a user can employ a wireless device to authorize a request that is initiated by a remote third party and transmitted to the user by an authorization server. The system includes the authorization server that is linked to the third party by way of a communications connection and a wireless device that is adapted to securely store an encryption scheme and create a secure authorization from the user in response to the third party request and has the ability to establish a secure wireless connection over which the secure authorization is transmitted from the user's wireless device to the authorization server. Pre-authorization, real-time authorization and post-authorization methods are disclosed by which user authorized transactions can be completed by way of the authorization system of this invention.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: November 4, 2008
    Assignee: Xtreme Mobility, Inc.
    Inventors: Simon Law, Pasan Hapuarachchi, Daniel Man Tse, Jimmy Law
  • Publication number: 20050184145
    Abstract: The invention relates to a secure wireless authorization system by which a user can employ a wireless device to authorize a request that is initiated by a remote third party and transmitted to the user by an authorization server. The system includes the authorization server that is linked to the third party by way of a communications connection and a wireless device that is adapted to securely store an encryption scheme and create a secure authorization from the user in response to the third party request and has the ability to establish a secure wireless connection over which the secure authorization is transmitted from the user's wireless device to the authorization server. Pre-authorization, real-time authorization and post-authorization methods are disclosed by which user authorized transactions can be completed by way of the authorization system of this invention.
    Type: Application
    Filed: February 7, 2005
    Publication date: August 25, 2005
    Inventors: Simon Law, Pasan Hapuarachchi, Daniel Tse, Jimmy Law