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Advanced Data Deletion and Perfect Forward Secrecy

Overview

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The Advanced Data Deletion and Perfect Forward Secrecy feature ensures that data removed from UnoLock CybVault is permanently deleted and cannot be recovered, while also guaranteeing that past communications and data remain secure even if future keys are compromised. By implementing secure data deletion protocols and perfect forward secrecy (PFS), UnoLock protects user privacy by ensuring that deleted data, such as cryptocurrency keys, documents, or personal records, is irretrievable and that historical data sessions are isolated from future security breaches. This feature reinforces UnoLock’s commitment to zero-knowledge privacy and robust data protection.

How It Works

  • Secure Data Deletion: When a user deletes data (e.g., a safe, file, or record) from their vault, UnoLock employs cryptographic wiping techniques to overwrite and permanently remove the data from AWS S3 storage, ensuring it cannot be recovered.
  • Perfect Forward Secrecy (PFS): UnoLock uses ephemeral session keys for each data transaction or communication session, generated using Diffie-Hellman key exchange or similar protocols. These keys are discarded after use, ensuring that a compromised future key cannot decrypt past sessions.
  • Key Rotation: The client-side keyring regularly rotates encryption keys, and deleted data is re-encrypted with new keys before removal, further isolating it from future access.
  • Audit and Verification: UnoLock logs deletion requests securely using AWS CloudTrail, allowing users to verify that data has been permanently removed without retaining recoverable copies.

Security Implications

  • Irreversible Data Removal: Secure deletion ensures that deleted data cannot be recovered by attackers, administrators, or forensic tools, protecting user privacy.
  • Protection Against Future Breaches: PFS guarantees that even if a future encryption key is compromised, past data sessions remain secure, as each session uses unique, ephemeral keys.
  • Compliance with Privacy Standards: The combination of secure deletion and PFS supports adherence to strict data protection regulations, ensuring that deleted data is unrecoverable and past communications are protected.

Use Cases

  • Sensitive Data Disposal: Users handling sensitive information, such as cryptocurrency keys or legal documents, can permanently delete data with confidence that it cannot be recovered.
  • Privacy-Conscious Individuals: Individuals in high-risk roles (e.g., journalists, activists) can use this feature to ensure that deleted data and past communications remain private, even in the event of a future breach.
  • Regulatory Compliance: Businesses subject to data retention and deletion requirements (e.g., GDPR, HIPAA) can use UnoLock to securely delete data and maintain compliance.

Why It Matters

Data deletion and forward secrecy are critical for maintaining user trust and privacy in a digital world where data breaches and surveillance are prevalent. By ensuring that deleted data is permanently gone and past sessions are isolated from future compromises, UnoLock provides a robust solution for protecting digital assets and communications, aligning with its zero-knowledge and privacy-first principles.

FAQs

How does UnoLock ensure deleted data is unrecoverable?

UnoLock uses cryptographic wiping techniques to overwrite and permanently remove data from AWS S3, ensuring it cannot be recovered by any means.

What is perfect forward secrecy, and why is it important?

Perfect forward secrecy uses ephemeral session keys to ensure that past data sessions remain secure, even if future keys are compromised, protecting historical data from breaches.

Can deleted data be audited to confirm removal?

Yes, UnoLock logs deletion requests using AWS CloudTrail, allowing users to verify that data has been permanently removed without retaining recoverable copies.

Compliance & Privacy Regulations

  • GDPR & HIPAA Compliance: Advanced data deletion and PFS support compliance with GDPR, HIPAA, and other regulations by ensuring that deleted data is irretrievable and past communications are protected from future breaches.

Integration with Other Features

  • Client-Side Encryption Using AES-256 GCM: Secure data deletion works with client-side encryption to ensure that only encrypted data is stored, and deletion removes all traces of the plaintext.
  • Advanced Key Management with Client-Side Keyring: The keyring facilitates key rotation and secure key management, supporting PFS by generating and discarding ephemeral session keys.