摘要
文章主要研究古典密码学中具有重要意义与影响的G-Schreiber密码技术,包括它的密码系统组成原理、实施以及密码分析。重点阐述G-Schreiber机械表达,分析密码机内部的结构,描述G-Schreiber密码机的加密与解密过程。同时,提出了G-Schreiber密码机的密码破解方法,并利用该密码机的弱点,提出明文攻击技术。
Computer and communications systems are widely used today and using internet for communicating frequently.Especially,the growing occurrence of electronic commerce,internet banking and digital signature brings a convenient access to sophisticated services in our lives anywhere and at anytime.Commercial orders and other sensitive information are commonly transferred.However,those type of information need to be kept private.Consequently,it is important to provide information security services that are necessary.Cryptography has become an important part to assure the information security.Cryptography was used as a tool to avoid losing national secrets and strategies as well.In this paper,classical cryptograph,especially G-Schreiber,was studied considering its theory,practice and cryptanalysis.
