Key-aggregate cryptosystems (KAC) have attracted significant attention from the research
community because of their elegance and efficiency in enforcing predefined access control …

Proxy Re-encryption (PRE) offers an efficient solution for enforcing access control on
outsourced data through delegation of decryption rights of a delegator to a delegatee …

Proxy re-encryption enables the conversion of ciphertext of a message encrypted with one
users public key into a ciphertext that could be decrypted by another users private key. Proxy …

Proxy re-encryption (PRE) is a public-key cryptography primitive that delegates the
decryption capabilities of a user (called delegator) to another user (called delegatee) using …

Cryptography and access control are the core technologies for a secure operating system.
Cryptography can guarantee the confidentiality, integrity, availability and unforgeability of …