Deflating Mass-Surveillance Attempts in the Post-Snowden Era: Publicly-Traceable Conditional Decryptions

This paper presents the notion of conditional backdoor, a cryptographic paradigm that enables transparent, verifiable access to encrypted data based on predefined conditions. It replaces traditional backdoors with secure, auditable mechanisms leveraging witness encryption and blockchain-based enforcement. By treating lawful access as a computable predicate, the model aligns privacy preservation with regulatory compliance and accountability.