abe
=========

kp-abe & cp-abe
-------------------

kp-abe:
- private key 内嵌 access policy (AND / OR 等attribute组合判定)
- ciphertext 内嵌 attributes

cp-abe: 
- private key 内嵌 attributes 
- ciphertext 内嵌 access policy (AND / OR 等attribute组合判定)


cp-abe
------------

`ETSI TS 104 015 Cyber Security (CYBER); Quantum-Safe Cryptography (QSC); Efficient Quantum-Safe Hybrid Key Exchanges with Hidden Access Policies <https://www.etsi.org/deliver/etsi_ts/104000_104099/104015/01.01.01_60/ts_104015v010101p.pdf>`_