基于历史语料库的同音替代密码的分层聚类分析

IF 0.3 4区工程技术 Q4 COMPUTER SCIENCE, THEORY & METHODS

Cryptologia Pub Date : 2021-06-07 DOI:10.1080/01611194.2021.1918801

Anna Lehofer

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引用次数: 0

摘要

摘要本研究考察了从现代早期开始，层次聚类是否可以有效地用于同音替换密码。该方法首先在4种不同语言的基于历史语料库的人工同音密码上进行了测试。研究表明，同音替换字母的可解密性不依赖于纯文本语言，如果文本长度超过单一性点，则是有效的。最后，对4种语言中的原始同音替换密码-密码密钥对进行了检查。它确定该方法也适用于原始历史加密文件。

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Applying hierarchical clustering to homophonic substitution ciphers using historical corpora

Abstract This study examines whether hierarchical clustering can be used efficiently on homophonic substitution ciphers from the early modern age. The methodology was first tested on artificial homophonic ciphers based on historical corpora in 4 different languages. This investigation established that the decryptability of homophonic substitution letters does not depend on the plain text language, and it is effective if the text length goes beyond the unicity point. Finally the examination of original homophonic substitution cipher – cipher-key pairs followed in 4 languages. It determined that the method is applicable to original historical encrypted documents as well.

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来源期刊

Cryptologia 工程技术-计算机：理论方法

自引率

33.30%

发文量

审稿时长

24 months

期刊介绍： Cryptologia is the only scholarly journal in the world dealing with the history, the technology, and the effect of the most important form of intelligence in the world today - communications intelligence. It fosters the study of all aspects of cryptology -- technical as well as historical and cultural. The journal"s articles have broken many new paths in intelligence history. They have told for the first time how a special agency prepared information from codebreaking for President Roosevelt, have described the ciphers of Lewis Carroll, revealed details of Hermann Goering"s wiretapping agency, published memoirs - written for it -- of some World War II American codebreakers, disclosed how American codebreaking affected the structure of the United Nations.