Encryption Algorithms: Support strong encryption algorithms such as AES-256 for encrypting files.
File Encryption: Automatically encrypt files before they are uploaded to the cloud and decrypt them upon retrieval.
Key Management
Key Generation: Generate encryption keys securely, either automatically or based on user input.
Key Storage: Store encryption keys securely, separate from encrypted files, using methods such as hardware security modules (HSMs) or secure cloud key management services.
Key Rotation: Support periodic key rotation to enhance security.
User Authentication and Access Control
Authentication: Require strong user authentication (e.g., multi-factor authentication) to access the encryption system.
Access Control: Implement role-based or attribute-based access control to manage who can encrypt, decrypt, and access files.
File Management
Upload/Download: Encrypt files before uploading to the cloud and decrypt files after downloading from the cloud.
File Versioning: Support encryption and decryption of different versions of files.
Integration with Cloud Storage
Cloud Storage Integration: Integrate with various cloud storage providers (e.g., AWS S3, Google Cloud Storage, Microsoft Azure Blob Storage) to handle encrypted file storage.
API Support: Provide APIs for integrating with cloud storage services and other applications.
User Interface
Web Interface: Provide a user-friendly web interface for managing file encryption and decryption tasks.
Command-Line Interface (CLI): Offer a CLI for advanced users and automation.
Data Recovery
Backup and Restore: Implement mechanisms for securely backing up encryption keys and recovering encrypted files in case of data loss.
Emergency Access: Provide a secure method for recovering access to encrypted files in case of lost credentials or compromised accounts.
Compliance and Reporting
Audit Logging: Maintain detailed logs of encryption and decryption activities for auditing and compliance purposes.
Compliance: Ensure the system complies with relevant regulations and standards (e.g., GDPR, HIPAA) for data protection.
Non-Functional Requirements
Performance
Encryption/Decryption Speed: Ensure efficient encryption and decryption processes with minimal impact on file upload and download speeds.
Scalability: Scale the system to handle increasing volumes of data and concurrent users.
Usability
Ease of Use: Design a user-friendly interface for non-technical users to manage encryption and decryption tasks easily.
Documentation: Provide comprehensive documentation and support to assist users in understanding and using the system.
Reliability
System Availability: Ensure high availability of the encryption service with minimal downtime.
Fault Tolerance: Implement redundancy and failover mechanisms to maintain service continuity in case of component failures.
Security
Data Encryption: Ensure that encryption algorithms and key management practices are up-to-date and resistant to known vulnerabilities.
Secure Key Storage: Protect encryption keys from unauthorized access using industry-standard security practices.
Compliance with Standards: Adhere to security standards and best practices for encryption and data protection.
Maintainability
Code Quality: Maintain a clean, well-documented codebase to facilitate updates, debugging, and enhancements.
Update Management: Provide a process for deploying updates and patches with minimal disruption.
Compatibility
Cloud Providers: Ensure compatibility with multiple cloud storage providers and platforms.
Operating Systems: Support various operating systems and environments for accessing and managing encrypted files.
Compliance
Regulatory Compliance: Comply with data protection and privacy regulations relevant to the regions in which the system operates.
Industry Standards: Follow industry standards for encryption and key management (e.g., NIST, ISO/IEC).
Backup and Recovery
Data Backup: Regularly back up encryption keys and configuration settings.
Disaster Recovery: Develop and maintain a disaster recovery plan to restore system functionality and data access in case of major failures.
