Time-Based Direct Revocable Ciphertext-Policy Attribute-Based Encryption with Short Revocation List
Published in 16th International Conference on Applied Cryptography and Network Security (ACNS 2018), Leuven, Belgium, 2018
Recommended citation: Joseph K. Liu, Tsz Hon Yuen, Peng Zhang, and Kaitai Liang. “Time-Based Direct Revocable Ciphertext-Policy Attribute-Based Encryption with Short Revocation List.” In Applied Cryptography and Network Security (ACNS 2018), Lecture Notes in Computer Science, vol. 10892, pp. 516–534, 2018. https://doi.org/10.1007/978-3-319-93387-0_27
This paper proposes a direct-revocation ciphertext-policy attribute-based encryption scheme with time-limited user keys. Expired keys can be removed from the revocation list, helping keep it short while reducing public-parameter and secret-key sizes.