RFID Tagged Document Encryption System
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Solution Overview
Problem
Confidential documents printed on paper are vulnerable to unauthorized copying and tampering due to the ease of digitalization and alteration, posing a risk for personal and official information security.
Innovation Solution
A method and system that incorporates a unique tag with a printer to encrypt confidential information on printed documents, using radio frequency technologies like RFID or NFC, ensuring only authorized access and preventing unauthorized copying by generating a cryptographic key associated with the tag identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If confidential information is printed in plain text on documents, then the document content is easily accessible and readable, but the document becomes vulnerable to unauthorized copying and tampering
Solution Approach 1:
The patent applies different properties to different parts of the document. The confidential information is encrypted and printed in a specific region, while other parts of the document remain readable. This allows the document to have both secure and accessible portions simultaneously.
Solution Approach 2:
The patent changes the parameter of information representation from plain text to encrypted text for confidential content. The encryption transformation modifies the visual and structural parameters of the text while maintaining its functional integrity through the key-based decryption system.
2Reliability
If a unique tag with cryptographic key is attached to each document, then unauthorized copying is prevented, but the device complexity increases
Solution Approach 1:
The patent uses a unique tag that can be read and copied by authorized devices. The tag contains a unique identification that links to cryptographic keys stored in a database, allowing authorized copying and decryption while preventing unauthorized access.
Solution Approach 2:
The patent introduces a database as an intermediary between the unique tags and the cryptographic keys. This database mediates the relationship by storing mappings between tag identifiers and their corresponding keys, simplifying the overall system architecture.
3Reliability
If confidential information is encrypted on the document, then security against tampering is improved, but the ease of reading and processing the document is reduced
Solution Approach 1:
The patent performs preliminary encryption of the confidential information before printing it on the document. This preliminary action ensures that the information is secured from the outset while the decryption capability is prepared in advance through the associated cryptographic key system.
Solution Approach 2:
The patent implements a feedback mechanism where the encrypted document can be decrypted using the associated key. This feedback loop allows the system to transition from encrypted (secure) state to decrypted (readable) state when authorized, maintaining both security and accessibility.
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
Effectively secures printed documents by encrypting confidential information, preventing unauthorized access and tampering, while allowing authorized decryption and use, thus enhancing the protection of sensitive information.
Implementation Method 1
The attached tag may be machine writeable and is written onto with the printer. According to another feature, the reading is based on radio frequency technology (e.g., wireless interrogation) and the attached tag is a radio frequency identification (RFID) wireless transponder or tag or a near field communications (NFC) transponder or tag.
Data Source
AI summary
For protecting confidential information in a printed document, the invention provides a system and method for, on one hand, encrypting the confidential content of the document and then printing the part or parts of the document with confidential information in an encrypted form and the rest of the document in a non-encrypted form, and, on the other hand, decrypting the encrypted document content for display and use or for printing. In addition, for preventing unauthorized copying and tampering of a printed document, the invention provides a system and method for managing a unique tag, which is attached to the document and which authenticates the document.