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Line 1,583: '''Solution:'''<br> Using [https://github.com/jsoftware/convert_misc/blob/master/vig.ijs <code>vig</code>] from the [[j:Addons/convert/misc/vig\|convert/misc/vig addon]]: <lang j>ALPHA=: (65,:26) ];.0 a. NB. Character Set▼ ~~<lang j>NB.vig c Vigenère cipher~~ ~~NB. cipher=. key 0 vig charset plain~~ ~~NB. plain=. key 1 vig charset cipher~~ ~~vig=: conjunction define~~ : ~~r=. (#y) $ n i.x~~ ~~n {~ (#n) \| (r_1^m) + n i.y~~ ) ▲ALPHA=: (65,:26) ];.0 a. NB. Character Set preprocess=: (#~ e.&ALPHA)@toupper NB. force uppercase and discard non-alpha chars vigEncryptRC=: 0 vig ALPHA preprocess

Vigenère cipher: Difference between revisions

Vigenère cipher (view source)