n.密码学
In the numerous fields of the information technology, cryptology is playing an important role. 在信息技术的众多领域中，密码学都在发挥着重要的作用。
Many problems in the cryptology can be represented as optimizationproblems in mathematics. 密码学中的大量问题在数学上可以表现为困难的优化问题。
