This technical brief details the encryption foundation of Proofpoint Archive, focusing on its DoubleBlind key technology. The architecture separates key and data management, ensuring Proofpoint cannot access customer data. Using RSA 2048 and AES-256 encryption, the system secures data in transit and at rest, while allowing fully searchable encrypted archives. Keys are encrypted, escrowed for recovery, and backed by strict access controls. Additional safeguards include IP whitelisting and tamper detection across distributed data centers. The model enables compliance-ready, highly secure archiving without sacrificing usability, empowering organizations to maintain privacy and regulatory adherence.

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