信息加密被认为是现代通信最重要的技术之一。量子计算机的出现将使已有的加密算法(如RSA算法)的安全性受到严重的挑战。讨论依赖于量子力学原理的量子加密算法,并证明它们的安全性。同时给出加密算法在概率克隆存在情况下安全性的讨论。 Information encryption is considered one of the most important technologies in modern communications. The advent of quantum computers will make the security of existing encryption algorithms such as RSA algorithms seriously challenged. Discuss quantum cryptography algorithms that rely on the principles of quantum mechanics and prove their security. At the same time, the security of the encryption algorithm in the presence of probabilistic cloning is discussed.