古典密碼學原理演示器的程序設計

古典密碼學原理演示器的程序設計

摘要

隨著計算機和通信技術的飛速發展，密碼學已經滲透到了政治、經濟、文化乃至個人隱私等領域，使用加密技術來保護信息的安全變得越來越重要。這篇論文的重點是介紹幾個古典密碼體制、古典密碼加密解密演示器及其用C++的實現。
論文主要分為兩大部分,理論部分和應用部分。理論基礎部分包括正文的“1 概述”和“2　幾種密碼體制的原理及加解密算法的描述”：“1 概述”簡單介紹了幾種古典密碼的基礎知識；“2　幾種密碼體制的原理及加解密算法的描述”較詳細地介紹了幾種古典密碼加密算法的敘述和解密，而其中算法的內容為第4章的算法運用內容做準備。應用部分為“3 軟件的實現”：“3 軟件的實現”包括幾種密碼的C實現及加密解密器界面的C++實現和幾種密碼功能的執行、測試和使用。最后是“4 軟件設計小結”以及“致謝”和列出了1些參考的文獻。
這篇論文通過對加密系統的比較以及對加密算法的運用為密碼學中加密算法在日常生活中的運用范圍及其運用方法提供了1些有用的參考。

關鍵詞
密碼學，密碼體制，加密算法，解密算法，密鑰。

Abstract

Along with the computer and the communication rapid development, the cryptology already seeped domain and so on politics, economy, culture and even individual privacy, the use encryption technology protects the information the security to change more and more importantly. This paper key point is introduced several classical passwords systems, the classical password encryption decipher demonstration and its uses C++ the realization.
The paper mainly divides into two major parts, the theory part and the application part. The rationale partially "1 outline" and "2 several kind of passwords systems principle and adds the decipher algorithm including the main text the description": "1 outline" simply introduced several kind of classical passwords elementary knowledges; "2 several kind of passwords systems principle and added the decipher algorithm the description" in detail to introduce several kind of classical passwords encryption algorithm narration and the decipher, but algorithm content prepared for the fourth chapter of algorithm using the content. Applies the part is "3 software realizations": "3 software realizations" including several kind of passwords C realizations and encryption decipher contact surface C++ realization and several kind of passwords functions execution, test and use. Finally was "4 software designs subtotal" as well as "expresses thanks" and has listed some references literature.
This paper through the encryption algorithm has provided some useful references to the cryptographic system comparison as well as to the encryption algorithm utilization for the cryptology in the daily life utilization scope and its using the method.

Keyword
cryptology, password system, encryption algorithm, decipher algorithm, key.

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