Vigenère cipher: Difference between revisions
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→Variant
Cyril Nocton (talk | contribs) m (→Main solution) |
Cyril Nocton (talk | contribs) m (→Variant) |
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dec: BEWARETHEJABBERWOCKTHEJAWSTHATTHECLAWSTHATCATCH</pre>
====
No string to circular list conversion.
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(string-upcase (remove-if-not 'alpha-char-p s)))
(defun vigenere (
(let ((
(map 'string
(lambda (c)
(setf i (mod (1+ i) (length key)))
(char +a+ (mod (+ (position c +a+) (* d (position (elt key i) +a+))) 26)))
2. Execution
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