Subscriber Authentication via Optical Decryption Foil
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Solution Overview
Problem
Existing authentication methods in communications networks, particularly those using mobile devices, are vulnerable to attacks due to the reliance on insecure transmission channels and additional devices, which can be compromised by malicious software, compromising the security of transactions like online banking.
Innovation Solution
A method where an encrypted authentication code is transmitted to a terminal, which can be decrypted using a subscriber-specific foil, eliminating the need for additional devices and ensuring security through a physical, non-electronic decryption process, independent of the transmission medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an authentication code is transmitted via SMS to a mobile phone, then the subscriber can be authenticated, but the code can be intercepted or manipulated by malicious software on the mobile device
Solution Approach 1:
The patent introduces an optical intermediary (optical filter with decryption pattern) between the encrypted authentication code and the subscriber's view. The filter acts as a mediator that transforms the encrypted code into a readable form only when physically present, preventing digital interception or manipulation by malicious software.
Solution Approach 2:
The patent replaces the electronic/digital authentication code transmission with an optical-mechanical system. Instead of transmitting a readable code electronically, the system transmits an encrypted visual pattern that requires a physical optical filter to decrypt, substituting electronic vulnerability with optical-mechanical security.
2Reliability
If additional electronic devices are used for authentication, then security can be improved, but manufacturing and operating costs increase
Solution Approach 1:
The patent uses a thin optical filter film containing a decryption pattern instead of bulky electronic authentication devices. This thin film can be manufactured at low cost and integrated into existing subscription materials, avoiding the high manufacturing and operational costs associated with additional electronic devices.
3Reliability
If an encrypted authentication code is displayed on a terminal, then the code can be transmitted securely, but it cannot be read without the decryption filter
Solution Approach 1:
The patent applies local quality by making the authentication code readable only in the specific local context where the subscriber possesses the corresponding optical filter. The encrypted code displayed on the terminal is unreadable everywhere else, and becomes readable only when viewed through the subscriber's unique filter, creating localized accessibility.
Data Source
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Figure 1b
Figure 2a
AI summary
The method involves transmitting an encrypted authentication code i.e. arbitrarily long character string, to a mobile terminal equipment (4) for authenticating input to a subscriber (A) via a mobile radio channel. The authentication code encrypted on a display unit of the terminal equipment is decrypted by holding a film (60) made of molded fiberglass. The decrypted authentication code is provided in a communication network for authentication of the subscriber, where the transmitted and encrypted code comprises a random pattern of dots. The readable code is viewable by holding the film. Independent claims are also included for the following: (1) a film (2) a communication network.