Social Network Key Derivation for Secure Wireless Broadcast
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Solution Overview
Problem
Conventional methods for sharing information, such as those used in the internet of vehicles, often result in unintended recipients accessing sensitive content, compromising security and privacy.
Innovation Solution
An information processing method and device that securely shares information by generating a key based on shared first information, encrypting secondary information, and wirelessly broadcasting it, allowing only pre-determined friends or neighbors to decrypt the content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If information is wirelessly broadcast using vehicle-mounted antenna, then information sharing convenience is improved, but information security deteriorates as strangers can receive the content
Solution Approach 1:
The patent segments the information into two parts: unencrypted metadata (shared publicly) and encrypted content (shared only with authorized users). The encryption key is derived from social relationship data, creating distinct layers of information access based on user relationships.
Solution Approach 2:
The patent introduces encryption algorithms and key derivation mechanisms as intermediaries between the information source and recipients. Social relationship data acts as an intermediary to control key generation, ensuring only authorized users can decrypt the content while maintaining wireless broadcast convenience.
2Reliability
If encryption is applied to protect information security, then information security is improved, but system complexity increases due to key management requirements
Solution Approach 1:
The patent implements self-service key derivation where encryption keys are automatically generated from social relationship data stored in the users' own devices. This eliminates the need for manual key distribution and management, reducing system complexity while maintaining strong encryption security.
Solution Approach 2:
The patent performs preliminary key derivation by generating encryption keys from social relationship data before the actual information sharing occurs. This preliminary action ensures keys are ready and consistent for both sender and receiver, simplifying the overall key management process.
Data Source
AI summary
The present application provides an information processing method and device, and relates to the field of information encryption and decryption. The method comprises: sharing first information on a social network; generating a key according to the first information; encrypting second information by using the key, to obtain encrypted information; and wirelessly broadcasting the encrypted information. According to the method, persons in a coverage area of the wireless broadcast all can receive the encrypted information, but only a person having a permission to access the first information on the social network can decrypt the encrypted information. Therefore, it is convenient and secure for a user to broadcast information to friends around and the like.