The requesting organization seeks a vendor to provide a professional service solution for network-based encryption key recovery storage. The solution must be capable of supporting large-scale S/MIME decryption to enable investigations, cybersecurity operations, litigation discovery, and other authorized use cases.

Requirements include integration with enterprise directory services to facilitate user lookup and authorization, and secure ingestion, cataloging, and controlled recovery of user encryption private keys. The process must ensure authorized personnel are provided with a strict, auditable, and controlled workflow for restoring encrypted content, maintaining rigorous access controls, chain-of-custody tracking, and adherence to security and privacy policies.

Additionally, the solution should generate immutable, exportable logs containing details such as user identity, certificate attributes, timestamps, and all recovery operations. This logging is essential for ongoing compliance and auditing purposes.