猪圈密码(英语:pigpen cipher),亦称共济会密码(masonic cipher)或共济会员密码(Freemason's cipher),是一种以格子为基础的简单替换式密码。即使使用符号,也不会影响密码分析,亦可用在其它替代式的方法。右边的例子,是把字母填进格子的模样。
范例
若使用范例的关键字,则明文“X marks the spot”的加密结果将呈现如下:
参考文献
- David Kahn, The Codebreakers. The Story of Secret Writing. Macmillan, 1967.
- David E. Newton, "Freemason's Cipher" in Encyclopedia of Cryptology, 1998, ISBN 0-87436-772-7.
- Martin Gardner, Codes, ciphers and secret writing, 1972, ISBN 0-486-24763-9.
- Sarah Wray, The Trap, book, code breaking; 2008
注脚
外部链接
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