ATM Secure File Transfer System Using Key Destruction
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Solution Overview
Problem
Public Wi-Fi networks are susceptible to spoofing and man-in-the-middle attacks, and existing encryption methods are not always effective in preventing data breaches, while internet fraud and identity verification over the internet remain significant challenges due to the difficulty in de-anonymizing individuals.
Innovation Solution
An ATM system that allows users to connect to a controlled network, verifies identity through physical presence and identification cards, and uses encryption and analysis techniques such as OCR, natural language processing, and computer vision to secure media file transfers between client devices and servers, minimizing the risk of third-party attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption is used to protect data transmission, then data confidentiality is improved, but the data can still be compromised in the future when encryption keys are compromised or computing power increases
Solution Approach 1:
The patent destroys the encryption key immediately after the encrypted data is transmitted, before any potential future attack can occur. This preliminary destruction of the key ensures that even if an attacker records the encrypted communication, they cannot decrypt it later when computing power increases or encryption weaknesses are discovered.
Solution Approach 2:
The system discards the encryption key after use by destroying it in memory, rather than retaining it for future use. This deliberate discarding of the key after its useful purpose is fulfilled eliminates the risk of future key compromise while still allowing the encrypted data to be transmitted securely at the time of transfer.
2Ease of operation
If public Wi-Fi networks are used for file transfer, then accessibility is improved, but the network is susceptible to spoofing and man-in-the-middle attacks
Solution Approach 1:
The ATM serves as a trusted intermediary device between the client and the server. The client transfers files to the ATM through a controlled network, and the ATM then transmits the encrypted files to the server. This intermediary approach allows the system to maintain security while enabling file transfer accessibility.
Solution Approach 2:
The patent creates a controlled, secure network environment at the ATM that is isolated from public Wi-Fi networks. This inert environment protects against spoofing and man-in-the-middle attacks while still allowing the client to access the file transfer system through the ATM's controlled network interface.
3Ease of operation
If identity verification is conducted over the internet, then convenience is improved, but effective verification methods are limited due to anonymity
Solution Approach 1:
The patent replaces internet-based identity verification with physical presence verification at the ATM. The client must be physically present at the ATM to transfer files, and the system can verify identity through physical identification methods such as ID card scanning or biometric authentication, eliminating the anonymity problem of internet verification.
Data Source
AI summary
An ATM can receive a media file from a client device and transmit the media file from the ATM to a server. Each of the ATM and the client device can include a master key and the client device can encrypt the media file using the master key before sending the media file to the ATM. The ATM can decrypt the media file using the master key and analyze the media file by a processor of the ATM before transmitting the media file to the server. Analyzing the media file can include one of applying an OCR algorithm to the media file, performing a template algorithm, using a natural language processing technique, using a computer vision method and looking for a watermark.