Contactless Card Cryptographic Authentication Without Login Credentials

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Solution Overview

Problem

Existing contactless cards face challenges in data security, authentication, and activation processes, which are vulnerable to hacking and require cumbersome verification methods, such as log-in credentials and separate physical tokens.

Innovation Solution

Implementing a contactless card with a processor and memory, capable of generating an encrypted payload, and a client application that communicates via gestures to authenticate and activate the card, using servers to decrypt and grant access to services based on decryption status.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional log-in credentials (username and password) are used for authentication, then account access can be established, but security is compromised when credentials are hacked or unauthorized access occurs

Engineering Contradiction:
Improveauthentication securityVSAvoidvulnerability to hacking
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces traditional mechanical credential-based authentication (usernames and passwords) with contactless NFC-based cryptographic authentication. The contactless card uses NFC technology to establish secure communication with the server, eliminating the need for vulnerable login credentials and enabling authentication through physical proximity and cryptographic verification.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a contactless card with NFC technology as an intermediary between the user and the authentication system. This intermediary card contains cryptographic elements that enable secure verification without requiring the user to disclose credentials, thereby preventing hacking and unauthorized access while maintaining authentication reliability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If separate physical tokens and multiple verification steps are used, then authentication security is improved, but activation process becomes time-consuming and complex

Engineering Contradiction:
Improveauthentication securityVSAvoidactivation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent merges the authentication token and activation functionality into a single contactless card. The card integrates NFC communication, cryptographic verification, and activation capabilities in one unified device, eliminating the need for separate physical tokens and multiple verification steps, thereby reducing activation time while maintaining security.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent performs preliminary cryptographic setup and key pairing between the contactless card and the server during the activation process. This preliminary action establishes secure communication channels in advance, allowing subsequent authentication operations to proceed rapidly without requiring repeated verification steps, thus reducing overall activation time.

Inventive Principle:
Principle #10Preliminary action

3Speed

If contactless cards use NFC technology for communication, then authentication speed is improved, but data security vulnerabilities remain without proper encryption

Engineering Contradiction:
Improveauthentication speedVSAvoiddata security
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent changes the cryptographic parameters by implementing dynamic key pairing and per-session encryption keys for NFC communication. Instead of using static encryption schemes, the system generates unique cryptographic parameters for each authentication session, maintaining high authentication speed while preventing data security vulnerabilities through continuous cryptographic refreshment.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces dynamic cryptographic key generation during the NFC authentication process. The contactless card and server establish dynamic key pairs that change with each transaction, allowing fast authentication while adapting security parameters to prevent data breaches. This dynamic approach maintains speed benefits of contactless communication while enhancing data security through continuous cryptographic evolution.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20260058818A1Systems and methods for cryptographic authentication of contactless cards
Publication Date: 2026.02.26 CAPITAL ONE SERVICES LLC
  • US20260058818A1 patent drawing
  • US20260058818A1 patent drawing
  • US20260058818A1 patent drawing

AI summary

Example embodiments of systems and methods for data transmission between a contactless card, a client device, and one or more servers are provided. One or more applets of the contactless card are configured to dynamically generate an encrypted payload appended to a link, wherein the contactless card is configured to transmit the link with the appended payload to the client device via one or more gestures. The one or more servers are configured to receive the payload from the client device via one or more applications, parse and decrypt the payload after launch of one or more applications, and transmit one or more notifications to the client device based on a status associated with decryption of the payload. The client device is granted access to a plurality of services associated with the one or more servers based on the one or more notifications received from the one or more servers.