- Patent Title: Systems and methods for signaling an attack on contactless cards
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Application No.: US16351379Application Date: 2019-03-12
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Publication No.: US10542036B1Publication Date: 2020-01-21
- Inventor: William Duane , Srinivasa Chigurupati , Kevin Osborn
- Applicant: Capital One Services, LLC
- Applicant Address: US VA McLean
- Assignee: CAPITAL ONE SERVICES, LLC
- Current Assignee: CAPITAL ONE SERVICES, LLC
- Current Assignee Address: US VA McLean
- Agency: Hunton Andrews Kurth LLP
- Main IPC: H04L29/06
- IPC: H04L29/06

Abstract:
Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key. In an embodiment, the transmitting device can signal an attack or potential attack through the counter value. The attack signaling can further include information relating to the attack or potential attack.
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