Caesar cipher: Difference between revisions
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Cyril Nocton (talk | contribs) |
Cyril Nocton (talk | contribs) |
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> (caesar-decipher "Qeb nrfzh yoltk clu grjmp lsbo qeb ixwv ald" 23) |
> (caesar-decipher "Qeb nrfzh yoltk clu grjmp lsbo qeb ixwv ald" 23) |
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"The quick brown fox jumps over the lazy dog"</pre> |
"The quick brown fox jumps over the lazy dog"</pre> |
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====W/o |
====W/o decyphering function==== |
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1. Note |
1. Note |
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<pre>if rot(text shift) = cyphertext then rot(cyphertext -shift) = text</pre> |
<pre>if rot(text shift) = cyphertext then rot(cyphertext -shift) = text</pre> |
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2. Program |
2. Program |
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Text manipulation is a |
Text manipulation is a tricky. Requiescat in pace. |
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<lang lisp>(defconstant +rot+ "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz") |
<lang lisp>(defconstant +rot+ "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz") |
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