描述
加密算法的安全性。加密与解密。熵、等价度与唯一性距离。密码分析与计算复杂性。替代、换位与乘积密码。对称密钥密码：分组与流模式。模运算。公钥密码系统。因式分解方法。椭圆曲线、基于格与同态加密。安全性证明。
原文参考文本
Security in encryption algorithms. Encryption and decryption. Entropy, equivocation, and unicity distance. Cryptanalysis and computational complexity. Substitution, transposition, and product ciphers. Symmetric ciphers: block and stream modes. Modular arithmetic. Public key cryptosystems. Factorization methods. Elliptic curve, lattice-based, and homomorphic cryptography. Proofs of security.
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