论文信息 - A Novel Hybrid Encryption Scheme against Adaptive Chosen Ciphertext Attack

A Novel Hybrid Encryption Scheme against Adaptive Chosen Ciphertext Attack

Many efficient CCA2-secure hybrid encryption schemes have been proposed, but their securities are based on too strong assumptions. It would be preferable to base a security proof on a weaker assumption, so we describe a practical hybrid encryption scheme based on the weaker LDDH assumption, and in the standard model prove to be CCA2-secure if the LDDH assumption is true.

Yixian Yang | S. Qing | Zhifeng Qi | Guanghui Cheng

[1] Moni Naor,et al. Public-key cryptosystems provably secure against chosen ciphertext attacks , 1990, STOC '90.

[2] Moni Naor,et al. Non-malleable cryptography , 1991, STOC '91.

[3] Daniel R. Simon,et al. Non-Interactive Zero-Knowledge Proof of Knowledge and Chosen Ciphertext Attack , 1991, CRYPTO.

[4] Ronald Cramer,et al. A Practical Public Key Cryptosystem Provably Secure Against Adaptive Chosen Ciphertext Attack , 1998, CRYPTO.

[5] Victor Shoup,et al. Using Hash Functions as a Hedge against Chosen Ciphertext Attack , 2000, EUROCRYPT.

[6] Mihir Bellare,et al. Code-Based Game-Playing Proofs and the Security of Triple Encryption , 2004, IACR Cryptol. ePrint Arch..

[7] Yvo Desmedt,et al. A New Paradigm of Hybrid Encryption Scheme , 2004, CRYPTO.

[8] Hovav Shacham,et al. Short Group Signatures , 2004, CRYPTO.

[9] Mihir Bellare,et al. The Game-Playing Technique , 2004 .

[10] Le Trieu Phong,et al. On a Variation of Kurosawa-Desmedt Encryption Scheme , 2006, IACR Cryptol. ePrint Arch..