Client-Side User Data Encryption for Cloud Storage Security
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Solution Overview
Problem
Existing data protection systems for cloud storage are vulnerable to unauthorized access, as encryption keys are stored on the same servers as user data, and mechanisms for protection are hidden from users, undermining trust and security.
Innovation Solution
A method and system for encrypting user data using a software client that collects user authentication data, generates a hash, and creates an encryption key for secure transmission to a remote network server, with optional repeat encryption upon changes in authentication data or time intervals, utilizing symmetric-key encryption techniques and cryptographic salts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption keys are stored on the same server as user data, then data can be accessed and decrypted by server administrators or hackers who gain server access, but this simplifies the key management infrastructure
Solution Approach 1:
The system divides the encryption key management into separate components: key generation occurs on the user's device, keys are transmitted securely to the server, and the server stores only encrypted data without retaining decryption keys. This segmentation ensures that even if the server is compromised, the encryption keys remain secure on user devices.
Solution Approach 2:
The encryption keys are extracted from the server environment and stored exclusively on user devices. The server is taken out of the key management process entirely, handling only encrypted data storage and retrieval operations. This extraction eliminates the security vulnerability of storing keys on the same server as user data.
2Reliability
If encryption mechanisms are hidden from users, then server security protocols remain confidential, but users cannot verify the security of their data
Solution Approach 1:
The system provides feedback to users through visible indicators such as lock icons, security status messages, and authentication confirmations. These feedback mechanisms allow users to verify that their data is encrypted and protected without exposing the underlying cryptographic algorithms or server security protocols.
Solution Approach 2:
The client software acts as an intermediary between the user and the server, translating complex cryptographic operations into simple user-friendly actions. The intermediary handles key generation, encryption, and decryption processes while presenting a simplified interface to users, maintaining security transparency without revealing implementation details.
3Speed
If user data is stored in unaltered form on servers, then data retrieval is fast and efficient, but the longer storage duration increases the chance of hackers succeeding in decrypting it
Solution Approach 1:
Data is encrypted on the user's device before transmission to the server, performing the security-critical encryption action in advance. This preliminary encryption ensures that data remains protected throughout its entire storage duration on the server, eliminating the security risk associated with long-term storage of unencrypted data while maintaining fast retrieval speeds.
Data Source
AI summary
Disclosed are systems, methods and computer program products for encryption of user data for storage on a remote network server. In one aspect, an example method includes collecting, by a software client, one or more sets of user authentication data from a user device; performing user authentication using one or more sets of user authentication data; when user authentication is successful, calculating a hash of at least one set of the user authentication data; generating an encryption key from the hash of the user authentication data; encrypting the user data using the generated encryption key; and transmitting the encrypted user data to the remote network server for storage.