A statistical cryptanalysis of the Beale ciphers

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

Cryptologia Pub Date : 2022-09-21 DOI:10.1080/01611194.2022.2116614

Leonardo Campanelli

引用次数: 0

Abstract

Abstract The encryption method used to encode the second Beale cipher leads to a ε-Benford’s distribution for the first significant digit of the numbers in the coded message. The relative level of deviation from Benford’s law, ε, is about 0.15 for the second decoded cipher. The other two undeciphered codes show a statistically significant deviation from a 0.15-Benford’s law, suggesting that either ciphers 1 and 3 are fake or the encryption method used to encode them is different from the one used for cipher 2.

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Beale密码的统计密码分析

摘要用于编码第二个Beale密码的加密方法导致编码消息中数字的第一个有效数字的ε-Benford分布。对于第二个解码密码，偏离本福德定律的相对水平ε约为0.15。另外两个未解码的代码显示出与0.15-Benford定律的统计显著偏差，这表明密码1和3要么是假的，要么用于编码它们的加密方法与用于密码2的加密方法不同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.