ID-Based Encryption File Extension Security
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Solution Overview
Problem
Existing secret-key-based and public key infrastructure (PKI) cryptosystems face challenges in managing symmetric keys and certificates, respectively, which become impractical for large-scale data sharing, and require certificate authorities for key verification.
Innovation Solution
An identity-based (ID-based) encryption and signature method that uses a transmitter or receiver ID as a filename or extension to encrypt files or append signatures, allowing for secure file transmission and verification without the need for symmetric keys or certificate authorities, using an ID-based processing module to manage and verify identities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If symmetric keys are used for encryption, then encryption security is improved, but key management complexity increases exponentially
Solution Approach 1:
The patent extracts the key management function from the encryption system by using public key infrastructure. Instead of managing symmetric keys within the encryption process, the system separates key generation, distribution, and verification into distinct public key operations, eliminating the exponential key management complexity while preserving encryption security.
Solution Approach 2:
The patent introduces certificate authorities as intermediaries that issue and verify accredited certificates. These intermediaries manage the public key relationships, allowing users to encrypt and verify without directly managing complex key pairs, thus reducing key management complexity while maintaining security through trusted third-party verification.
2Reliability
If certificate authorities are used for key verification, then authentication reliability is improved, but system complexity increases
Solution Approach 1:
The patent makes accredited certificates universal by designing them to serve multiple functions: authentication, authorization, and key verification. A single certificate structure handles identity verification and access control rights, eliminating the need for separate verification systems and reducing overall system complexity while maintaining authentication reliability.
Solution Approach 2:
The patent performs preliminary action by having certificate authorities pre-verify and issue accredited certificates before users need them for encryption or verification. This advance verification establishes trusted relationships in advance, eliminating the need for complex real-time verification processes and reducing system operational complexity while ensuring authentication reliability.
3Reliability
If file encryption is implemented, then data security is improved, but file identification and management becomes difficult
Solution Approach 1:
The patent applies visual differentiation by associating specific file extensions with encryption types and security levels. Different encrypted files have distinct extensions that visually indicate their security properties, making it easy for users to identify and manage encrypted files without compromising data security. This visual coding system allows intuitive file management while maintaining strong encryption.
Data Source
AI summary
Provided are an identity (ID)-based encryption and signature method and a terminal that use an ID of a transmitter or a receiver as a part of the filename or the extension of a file transmitted to the receiver by the transmitter. Accordingly, it is possible to enable a user to visually recognize that the file has been provided with security. Also, it is possible to designate an associated program for the extension, and the user can easily decrypt or verify the file through the designated associated program.