选择密文攻击

提出两个抗选择密文攻击的门限密码系统。

Two threshold cryptosystems secure against chosen ciphertext attacks are proposed .

标准模型中非交互抗选择密文攻击门限密码方案

Non-interactive Threshold Cryptosystems Secure Against Chosen Ciphertext Attacks in the Standard Model

基于Pairing抗选择密文攻击的新门限密码体制

Choice New Threshold Cryptosystem against Chosen Ciphertext Attacks Based on Pairing

此外，证明了方案中加密算法在DDH假设和适应性选择密文攻击下是安全的。

The encryption algorithm in the scheme is semantically secure against adaptive chosen cipher-text attacks based on the DDH assumption .

密钥分拆方法采用门限方案，在托管代理和管理中心验证碎片时，采用RSA方法，结合两者的优点，克服了它们的缺点，能够防止选择密文攻击、公共模数攻击。

Using threshold scheme to distribute the keys and verify the pieces using RSA . Thus with advantages of two algorithms to prevent the selected encrypted text attack and public module attack .

它与RSA算法相似，其安全性基于大数因式分解的难度，能够抵抗对于RSA的选择密文攻击，并且易于软件实现。

Its ( security ) is based on the intractability of the integer factorization problem as RSA , and it is able to resist the chosen-ciphertext attack against RSA and easy to be implemented .

本文充分利用Weil对的优良属性提出一个新的无证书加密方案，而且在RandomOracle模型下证明了所提方案是抗选择密文攻击安全的。

A new certificateless public key encryption scheme is proposed . In this paper , we propose a new CL-PKE scheme which is based on the nice algebraic properties of Weil pairing and proof the security of the scheme formally in the random oracle model .

时空混沌自同步流密码系统的选择密文攻击

Chosen - ciphertext Attack for Chaotic Self - synchronizing Stream Cryptosystem

提出了两个有效的抗选择密文攻击的基于身份门限解密方案。

We propose two efficient Identity-Based threshold decryption schemes .

量子密码和密码体制理论安全若干问题研究抗选择密文攻击公钥密码体制的研究

Study of Some Problems of Quantum Cryptography and Theoretical Security of Cryptosystem ; Study on the Public Key Cryptosystem Secure Against Chosen Ciphertext Attack

研究了基于观测器的混沌保密通信系统的安全性问题，提出了能够抵抗基于参数辨识的自适应同步攻击和选择密文攻击的混沌保密通信系统。

Security problem of observer-based chaotic secure communication is researched . The communication scheme with high security is obtained , which defines attacking from adaptive synchronization and ciphertext chosen .

文中对算法进行了详细的性能指标分析，结果表明：该算法密钥空间巨大，可以有力地抵抗选择明文、密文攻击。

The algorithm has a large space of the key , which can be proven by detailed analysis of the performance index , and can withstand chosen-text / cipher attack .

对于基于身份的公钥加密，本文给出了一个理想功能，并证明了任何适应性选择密文及身分攻击下明文不可区分的体制都可以安全实现该理想功能。

For the identity-based encryption , we proposed an ideal functionality and proved that any identity-based encryption scheme which is secure against adaptive chosen-ciphertext and identity attacks , can securely realize it .

此外，明文相关的分组长度可以有效的抵御选择明文或选择密文攻击。

In addition , the plaintext determined block length can effectively resist chosen plaintext attack and chosen ciphertext attack .

实现了对该方案的选择明文攻击、选择密文攻击和已知明文攻击。

We found that this scheme cannot resist chosen plaintext attack , cho-sen ciphertext attack and known plaintext attack .