Transaction Device Chip Authenticity Verification
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Solution Overview
Problem
Transaction devices like payment cards are vulnerable to cloning and misuse, as holograms only verify the card body's genuineness without ensuring the chip's authenticity, leading to delayed fraud detection.
Innovation Solution
Incorporating a chip with a readable reference code that generates a cryptographically signed version of the code, allowing comparison with a printed reference code on the card to verify the chip's genuineness, using various encoding methods such as QR codes, digital watermarks, or holograms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If holograms are used as security features on payment cards, then the card body's genuineness can be verified, but the chip's authenticity cannot be confirmed, allowing fraudulent chip replacements
Solution Approach 1:
The security verification is divided into two independent segments: hologram verification for card body authenticity and reference code verification for chip authenticity. Each component has its own verification mechanism, allowing independent validation of different parts without compromising the other.
Solution Approach 2:
A reference code serves as an intermediary element that links the chip to the card body. The reference code is printed on the card body and stored in the chip, acting as a mediator to verify that the chip belongs to the specific card body and has not been replaced.
2Reliability
If reference codes are printed on the card body and stored in the chip, then chip authenticity can be verified, but the device complexity increases
Solution Approach 1:
The reference code serves multiple functions: it acts as a unique identifier for the card, provides verification data for both the card body and chip authenticity, and enables the cryptographic signature verification process. This multi-functionality reduces the need for separate security features.
Solution Approach 2:
The reference code is transformed through cryptographic hashing and signature generation, changing its form from a simple printed string to a cryptographically secured data structure. This parameter change enhances security without requiring additional physical components.
3Difficulty of detecting and measuring
If cryptographic signatures are implemented for reference codes, then fraud detection capability improves, but the manufacturing complexity increases
Solution Approach 1:
The reference code and its cryptographic signature are generated and embedded in the chip during the initial manufacturing process. This preliminary action ensures that the verification data is already in place before the card is issued, simplifying the verification process at the point of use without adding complexity to the manufacturing stage.
Data Source
AI summary
There is provided a transaction device comprising a chip enclosure comprising a readable reference code; a chip embedded in the chip enclosure, the chip having the reference code stored therein; wherein the chip is configured to generate a cryptographically signed version of the reference code stored in the chip upon receipt of a request message, such that the reference code can be retrieved from the cryptographically signed version of the reference code for comparison with the readable reference code. There is also provided a method of a manufacturing a transaction device, wherein the method comprises storing a reference code in a chip; positioning the chip on a chip enclosure; embedding the chip in the chip enclosure; and applying the reference code to the chip enclosure in a readable format.