Patents by Inventor Mustafa Top
Mustafa Top 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).
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Publication number: 20230396998Abstract: A method includes forming a communication channel between a user device and an access device. The communication channel is then secured using a user device key pair in the user device and an access device ephemeral key pair in the access device. The access device then generates a session key using at least a private cryptographic key in the access device ephemeral key pair, and a public key in the user device key pair. The access device then uses the session key to secure an ultra-wideband communication channel between the user device and the access device.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Applicant: Visa International Service AssociationInventors: Brian Sullivan, Aparna Girish, Mark Rigby, Christian Aabye, Mustafa Top, Yuexi Chen, Dinah Sloan, Hao Ngo
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Publication number: 20230334502Abstract: Provided are methods, systems, and computer program products for verifying a payment device using a magnetometer. The method includes detecting a magnetic signature of a payment device based on a magnetic field of the payment device affecting the magnetometer. The magnetic signature may be determined based on the structural composition of the payment device or a circuit arranged on or embedded in the payment device. The method also includes receiving payment device data for a transaction requested between an account associated with the payment device and an account of a merchant. The method further includes comparing the magnetic signature detected from the payment device with a stored magnetic signature associated with the payment device. The method further includes, in response to determining that the magnetic signatures match, approving the transaction.Type: ApplicationFiled: November 4, 2020Publication date: October 19, 2023Inventors: Mustafa Top, Yuexi Chen
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Patent number: 11785449Abstract: A method includes forming a communication channel between a user device and an access device. The communication channel is then secured using a user device key pair in the user device and an access device ephemeral key pair in the access device. The access device then generates a session key using at least a private cryptographic key in the access device ephemeral key pair, and a public key in the user device key pair. The access device then uses the session key to secure an ultrawideband communication channel between the user device and the access device.Type: GrantFiled: September 30, 2021Date of Patent: October 10, 2023Assignee: Visa International Service AssociationInventors: Brian Sullivan, Aparna Girish, Mark Rigby, Christian Aabye, Mustafa Top, Yuexi Chen, Dinah Sloan, Hao Ngo
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Publication number: 20230097712Abstract: A method includes forming a communication channel between a user device and an access device. The communication channel is then secured using a user device key pair in the user device and an access device ephemeral key pair in the access device. The access device then generates a session key using at least a private cryptographic key in the access device ephemeral key pair, and a public key in the user device key pair. The access device then uses the session key to secure an ultra-wideband communication channel between the user device and the access device.Type: ApplicationFiled: September 30, 2021Publication date: March 30, 2023Inventors: Brian Sullivan, Aparna Girish, Mark Rigby, Christian Aabye, Mustafa Top, Yuexi Chen, Dinah Sloan, Hao Ngo
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Publication number: 20220398565Abstract: NFC terminal devices and corresponding integrated circuit cards (ICCs) use NFC Type 4 tags as a protocol interface for complex or encrypted communication protocols that are not natively supported by the NFC terminal devices. A smartphone acting as an NFC terminal may block applications and/or protocols other than NFC data exchange formatted (NDEF) messages. An ICC applet supporting an advanced function uses designated memory locations for the transfer of commands normally supported at an application level. Both the terminal side and the ICC applet may check the designated memory locations for updated data in the absence of protocol-level message controls.Type: ApplicationFiled: August 23, 2022Publication date: December 15, 2022Inventors: Mustafa Top, Kiushan Pirzadeh
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Publication number: 20220311779Abstract: A method is disclosed. The method includes generating, by a communication device during an interaction with an access device, a cryptogram using transaction level data and interoperability level data; transmitting the transaction level data and interoperability level data to the access device; and transmitting the cryptogram the access device, wherein the access device or a remote server computer in communication with the access device validates the received cryptogram before allowing the transaction to proceed.Type: ApplicationFiled: June 13, 2022Publication date: September 29, 2022Inventors: Yuexi Chen, Marc Kekicheff, Mustafa Top, Hao Ngo
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Patent number: 11455617Abstract: NFC terminal devices and corresponding integrated circuit cards (ICCs) use NFC Type 4 tags as a protocol interface for complex or encrypted communication protocols that are not natively supported by the NFC terminal devices. A smartphone acting as an NFC terminal may block applications and/or protocols other than NFC data exchange formatted (NDEF) messages. An ICC applet supporting an advanced function uses designated memory locations for the transfer of commands normally supported at an application level. Both the terminal side and the ICC applet may check the designated memory locations for updated data in the absence of protocol-level message controls.Type: GrantFiled: October 4, 2019Date of Patent: September 27, 2022Assignee: VISA INTERNATIONAL SERVICE ASSOCIATIONInventors: Mustafa Top, Kiushan Pirzadeh
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Patent number: 11432155Abstract: A method preventing relay attacks between first and second devices is disclosed. The method includes providing, by a first device, a command message, receiving a request message and providing a response message to a second device. The time period between the receipt of the command message and the transmission of the response message by the first device is compared to another time period between the time when the command message was sent and the response message was received by the second device. If those times substantially match, then the first device can have assurance that a relay attack is not occurring.Type: GrantFiled: March 15, 2017Date of Patent: August 30, 2022Assignee: Visa International Service AssociationInventors: Mustafa Top, Yuexi Chen
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Patent number: 11394721Abstract: A method is disclosed. The method includes generating, by a communication device during an interaction with an access device, a cryptogram using transaction level data and interoperability level data; transmitting the transaction level data and interoperability level data to the access device; and transmitting the cryptogram the access device, wherein the access device or a remote server computer in communication with the access device validates the received cryptogram before allowing the transaction to proceed.Type: GrantFiled: January 17, 2018Date of Patent: July 19, 2022Assignee: Visa International Service AssociationInventors: Yuexi Chen, Marc Kekicheff, Mustafa Top, Hao Ngo
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Publication number: 20210103915Abstract: NFC terminal devices and corresponding integrated circuit cards (ICCs) use NFC Type 4 tags as a protocol interface for complex or encrypted communication protocols that are not natively supported by the NFC terminal devices. A smartphone acting as an NFC terminal may block applications and/or protocols other than NFC data exchange formatted (NDEF) messages. An ICC applet supporting an advanced function uses designated memory locations for the transfer of commands normally supported at an application level. Both the terminal side and the ICC applet may check the designated memory locations for updated data in the absence of protocol-level message controls.Type: ApplicationFiled: October 4, 2019Publication date: April 8, 2021Inventors: Mustafa Top, Kiushan Pirzadeh
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Patent number: 10885509Abstract: A bridge device acts as a link between generic wireless protocols of mobile devices and available communication components of access devices. The bridge device can be an attachment to existing access devices and enables a transaction using any available communication components on an access device and a bridge device mobile application on a mobile device. The bridge device notifies the mobile device which communication components are available for the transaction. The mobile device then sends a selection of a communication component to the bridge device. To conduct the transaction, the bridge device converts data received from the mobile device and sends it to the access device using a protocol compatible with the selected communication component. The bridge device also converts data received from the access device and sends it to the mobile device using a generic wireless protocol supported by the mobile device.Type: GrantFiled: October 15, 2015Date of Patent: January 5, 2021Assignee: VISA INTERNATIONAL SERVICE ASSOCIATIONInventors: Yuexi Chen, Mustafa Top, Philippe Martin
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Publication number: 20190373475Abstract: A method preventing relay attacks between first and second devices is disclosed. The method includes providing, by a first device, a command message, receiving a request message and providing a response message to a second device. The time period between the receipt of the command message and the transmission of the response message by the first device is compared to another time period between the time when the command message was sent and the response message was received by the second device. If those times substantially match, then the first device can have assurance that a relay attack is not occurring.Type: ApplicationFiled: March 15, 2017Publication date: December 5, 2019Inventors: Mustafa Top, Yuexi Chen
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Publication number: 20190362341Abstract: A method is disclosed. The method includes generating, by a communication device during an interaction with an access device, a cryptogram using transaction level data and interoperability level data; transmitting the transaction level data and interoperability level data to the access device; and transmitting the cryptogram the access device, wherein the access device or a remote server computer in communication with the access device validates the received cryptogram before allowing the transaction to proceed.Type: ApplicationFiled: January 17, 2018Publication date: November 28, 2019Inventors: Yuexi Chen, Marc Kekicheff, Mustafa Top, Hao Ngo
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Patent number: 10150328Abstract: Embodiments of the invention relate to payment cards and methods for making payment cards. In one embodiment, a card comprises a first layer and a second layer adjacent to the first layer. The second layer comprises a plurality of particles comprising metal, and the plurality of particles comprise at least about 15 volume % of the second layer. In another embodiment, a mixture is prepared comprising polymer and a plurality of particles comprising metal. The plurality of particles comprise at least about 15 volume % of the mixture. The mixture is pressed and an outer layer is applied. The mixture and outer layer are then cut to form the card.Type: GrantFiled: November 20, 2017Date of Patent: December 11, 2018Assignee: Visa International Service AssociationInventors: Sonia Reed, Kenneth M. Sippola, William Alexander Thaw, Mustafa Top, William B. Bedwell, Steven Crouch-Baker, Francis Louis Tanzella, Esperanza Alvarez, John Stephens Stotts
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Publication number: 20180072089Abstract: Embodiments of the invention relate to payment cards and methods for making payment cards. In one embodiment, a card comprises a first layer and a second layer adjacent to the first layer. The second layer comprises a plurality of particles comprising metal, and the plurality of particles comprise at least about 15 volume % of the second layer. In another embodiment, a mixture is prepared comprising polymer and a plurality of particles comprising metal. The plurality of particles comprise at least about 15 volume % of the mixture. The mixture is pressed and an outer layer is applied. The mixture and outer layer are then cut to form the card.Type: ApplicationFiled: November 20, 2017Publication date: March 15, 2018Inventors: Sonia Reed, Kenneth M. Sippola, William Alexander Thaw, Mustafa Top, William B. Bedwell, Steven Crouch-Baker, Francis Louis Tanzella, Esperanza Alvarez, John Stephens Stotts
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Patent number: 9858517Abstract: Embodiments of the invention relate to payment cards and methods for making payment cards. In one embodiment, a card comprises a first layer and a second layer adjacent to the first layer. The second layer comprises a plurality of particles comprising metal, and the plurality of particles comprise at least about 15 volume % of the second layer. In another embodiment, a mixture is prepared comprising polymer and a plurality of particles comprising metal. The plurality of particles comprise at least about 15 volume % of the mixture. The mixture is pressed and an outer layer is applied. The mixture and outer layer are then cut to form the card.Type: GrantFiled: May 13, 2015Date of Patent: January 2, 2018Assignee: Visa International Service AssociationInventors: Sonia Reed, Kenneth M. Sippola, William Thaw, Mustafa Top, William B. Bedwell, Steven Crouch-Baker, Francis Louis Tanzella, Esperanza Alvarez, John Stephens Stotts
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Publication number: 20170109726Abstract: A bridge device acts as a link between generic wireless protocols of mobile devices and available communication components of access devices. The bridge device can be an attachment to existing access devices and enables a transaction using any available communication components on an access device and a bridge device mobile application on a mobile device. The bridge device notifies the mobile device which communication components are available for the transaction. The mobile device then sends a selection of a communication component to the bridge device. To conduct the transaction, the bridge device converts data received from the mobile device and sends it to the access device using a protocol compatible with the selected communication component. The bridge device also converts data received from the access device and sends it to the mobile device using a generic wireless protocol supported by the mobile device.Type: ApplicationFiled: October 15, 2015Publication date: April 20, 2017Inventors: Yuexi Chen, Mustafa Top, Philippe Martin
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Publication number: 20150248601Abstract: Embodiments of the invention relate to payment cards and methods for making payment cards. In one embodiment, a card comprises a first layer and a second layer adjacent to the first layer. The second layer comprises a plurality of particles comprising metal, and the plurality of particles comprise at least about 15 volume % of the second layer. In another embodiment, a mixture is prepared comprising polymer and a plurality of particles comprising metal. The plurality of particles comprise at least about 15 volume % of the mixture. The mixture is pressed and an outer layer is applied. The mixture and outer layer are then cut to form the card.Type: ApplicationFiled: May 13, 2015Publication date: September 3, 2015Inventors: Sonia Reed, Kenneth M. Sippola, William Thaw, Mustafa Top, William B. Bedwell, Steven Crouch-Baker, Francis Louis Tanzella, Esperanza Alvarez, John Stephens Stotts
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Patent number: 9058548Abstract: Embodiments of the invention relate to payment cards and methods for making payment cards. In one embodiment, a card comprises a first layer and a second layer adjacent to the first layer. The second layer comprises a plurality of particles comprising metal, and the plurality of particles comprise at least about 15 volume % of the second layer. In another embodiment, a mixture is prepared comprising polymer and a plurality of particles comprising metal. The plurality of particles comprise at least about 15 volume % of the mixture. The mixture is pressed and an outer layer is applied. The mixture and outer layer are then cut to form the card.Type: GrantFiled: July 2, 2014Date of Patent: June 16, 2015Assignee: Visa International Service AssociationInventors: Sonia Reed, Kenneth M. Sippola, William Thaw, Mustafa Top, William B. Bedwell, Steven Crouch-Baker, Francis Louis Tanzella, Esperanza Alvarez, John Stephens Stotts
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Publication number: 20140312122Abstract: Embodiments of the invention relate to payment cards and methods for making payment cards. In one embodiment, a card comprises a first layer and a second layer adjacent to the first layer. The second layer comprises a plurality of particles comprising metal, and the plurality of particles comprise at least about 15 volume % of the second layer. In another embodiment, a mixture is prepared comprising polymer and a plurality of particles comprising metal. The plurality of particles comprise at least about 15 volume % of the mixture. The mixture is pressed and an outer layer is applied. The mixture and outer layer are then cut to form the card.Type: ApplicationFiled: July 2, 2014Publication date: October 23, 2014Inventors: Sonia Reed, Kenneth M. Sippola, William Thaw, Mustafa Top, William B. Bedwell, Steven Crouch-Baker, Francis Louis Tanzella, Esperanza Alvarez, John Stephens Stotts