Practical Applications of ABE

Healthcare is one of the most natural applications for ABE. Patient electronic health records can be encrypted with CP-ABE policies like: (role=Doctor AND treating=true) OR role=EmergencyResponder OR (role=Researcher AND IRBapproved=true AND dataAnonymized=true). This enables fine-grained sharing without relying on access control lists that must be maintained and audited, and works across organizational boundaries without requiring trust agreements.

Research systems like HealthVault ABE (Microsoft Research) and MedVault demonstrated CP-ABE for electronic health records. The patient acts as the encryptor and controls the policy. Healthcare providers receive attribute keys certifying their role and specialty. The cloud storage provider stores ciphertexts without being able to read them. Patients can update policies (by re-encrypting with a new policy) without redistributing encryption keys to all authorized parties.