Display Body Security via Hidden Codes and Ciphertext
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Solution Overview
Problem
Existing display bodies are vulnerable to tampering and forgery, as they rely on simple printed information that can be easily altered or replicated.
Innovation Solution
A method for manufacturing a display body that involves generating a hidden code from identification information, encrypting it to create a ciphertext, and recording both the hidden code and ciphertext on a base material using thermal transfer or laser engraving, thereby enhancing security and authenticity verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If personal information is simply printed on the display body, then the manufacturing process is simple and成本低, but the display body is easily tampered with or forged
Solution Approach 1:
The patent applies parameter changes by transforming the identification information into different forms: visible codes for human reading, hidden codes encoded from the identification information, and encrypted ciphertext. These different parameter representations of the same information provide multiple verification layers while maintaining manufacturing feasibility through automated processing
Solution Approach 2:
The patent uses composite materials by combining multiple recording methods (thermal transfer for visible and hidden codes, laser engraving for ciphertext) on the same base material. Each method provides different security characteristics, and their combination creates a composite security system that is difficult to forge while remaining manufacturable
2Reliability
If a hologram transfer foil is applied to the display body, then anti-tampering performance is improved, but the display body becomes more complex and forgery is not difficult for general holograms
Solution Approach 1:
The patent extracts the essential security function from complex hologram structures and implements it through simpler thermal transfer and laser engraving processes. By taking out the core requirement (difficulty of forgery) and achieving it through different means (encoded hidden codes and encrypted ciphertext), the patent reduces structural complexity while maintaining security
Solution Approach 2:
The patent substitutes mechanical/optical hologram systems with information-theoretic security methods. Instead of relying on physical hologram properties that are difficult to replicate but still forgeable, the patent uses encoded and encrypted information that provides mathematical security, replacing a complex physical system with a simpler information-based system
3Ease of operation
If reproduction information on the hologram is designed in advance and invariant, then verification is simplified, but a forger can become aware of the reproduction information and produce an imitating hologram
Solution Approach 1:
The patent applies preliminary action by pre-encoding the identification information into hidden codes and pre-encrypting them to create ciphertext before the final product is manufactured. This preliminary transformation of the information into secure forms ensures that even if verification is simplified, the security against forgery is maintained because the forger cannot obtain the original unencoded information
Solution Approach 2:
The patent adds another dimension to the information by creating multiple representations: the original identification information, the encoded hidden code, and the encrypted ciphertext. This dimensional expansion ensures that simplified verification using any single representation does not compromise security, as each dimension provides different security properties
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution effectively prevents tampering and forgery by creating a display body that is difficult to alter, while also allowing for authentic verification through the use of a hidden code that exhibits a special visual effect and a ciphertext that can be decrypted for forensic verification.
Implementation Method 1
forming the hidden code on the base material by thermal transfer or security printing, and recording the ciphertext on the base material by at least one of thermal transfer and laser engraving
Implementation Method 2
forming at least one of a code and an image of the identification information on the base material by at least one of thermal transfer and laser engraving
Data Source
AI summary
A display body includes a base material having a first region, a second region, and a third region. In the display body, the first region is formed with a code or an image of identification information, and the second region is formed with a hidden code containing information obtained by encoding at least a part of the identification information. An encrypted ciphertext is recorded in the third region, and the ciphertext is generated from at least one of the code of the identification information and the hidden code.