Shamir's Secret Sharing scheme is an important cryptographic algorithm that allows private information- "secrets" - to be distributed securely amongst an untrusted network. Shamir's method for secret sharing relies on polynomial interpolation, w
本文详细学习Lifted ElGamal 门限加密算法 门限加密体制 (1)门限加密是可以抗合谋的 (2)表现在私钥分为\(n\)份,至少需要\(t\)份才能解密成功,叫做(t-n)门限.类似于"秘密分享". ElGamal算法 (1)源自[A public key cryptosystem and a signature scheme based on discrete logarithms]给出了加法和乘法同态性的定义,其中加法同态只能用于小的明文域. (2)\(G\)是阶为\(p