- 期刊
Adaptively Secure Broadcast Encryption with Short Ciphertexts
並列摘要
We propose an adaptively secure broadcast encryption scheme with short ciphertexts, where the size of broadcast encryption message is fixed regardless of the size of the broadcast group. In our proposed scheme, members can join and leave the group without requiring any change to public parameters of the system or private keys of existing members. Our construction has a twofold improvement over previously known best broadcast encryption schemes. First, we propose a scheme that immediately yields adaptive security without any increase in the size of ciphertexts or use of a random oracle. Secondly, the proof of security in the proposed scheme is defined in a stronger security model closely simulating an adversary in real world. In our security model, the adversary can selectively query private keys of the group members after the setup and can receive decryption of broadcast encryption messages at any given time.
被引用紀錄
延伸閱讀
- Zhang, L., & Yin, H. (2018). Recipient Anonymous Ciphertext-Policy Attribute-based Broadcast Encryption. International Journal of Network Security, 20(1), 168-176. https://doi.org/10.6633/IJNS.201801.20(1).18
- Li, Q. Y., & Zhang, F. L. (2015). A Fully Secure Attribute Based Broadcast Encryption Scheme. International Journal of Network Security, 17(3), 263-271. https://doi.org/10.6633/IJNS.201505.17(3).05
- Tsai, J. L., & Wu, T. C. (2010). Efficient Convertible multi-authenticated Encryption Scheme for Group Communications. In 中華民國資訊安全學會 (Ed.), 全國資訊安全會議 (pp. 217-221). 中華民國資訊安全學會. https://doi.org/10.29615/CISC.201005.0217
- Yang, F. Y., Chen, C. H., & Hwu, Y. N. (2004). A Provable Secure Scheme for Convertible Authenticated Encryption. 建國科大學報, 24(1), 13-19. https://doi.org/10.6995/JCTU.200410.0013
- Tang, Q., & Ji, D. Y. (2010). Verifiable Attribute Based Encryption. International Journal of Network Security, 10(2), 114-120. https://doi.org/10.6633/IJNS.201003.10(2).05