Imagine a consortium of historical societies, each managing their digitized archival collections using Z39.50 compliant systems. The consortium aims to provide researchers with seamless access to these collections through a unified portal. However, the societies have varying levels of sensitivity regarding their data. The \"Ancient Mariners Society\" needs to restrict access to ship manifests containing personal information of deceased sailors to verified descendants only, while the \"Pioneer Women\'s Archive\" requires all users to authenticate, but grants universal read access to its collection of letters and diaries. The \"Industrial Revolution Museum\" wants to protect their schematics of early machinery from unauthorized copying by encrypting the data at rest. The consortium\'s IT architect, Javier, is tasked with implementing a security strategy that addresses these diverse needs within the Z39.50 framework. Which combination of security mechanisms would best satisfy the requirements of the consortium, ensuring both secure data transmission and granular control over access to sensitive information, while also protecting the Industrial Revolution Museum\'s data?