Substitution cipher: Difference between revisions
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crypted file into original/decrypted file. This type of Encryption/Decryption sc |
crypted file into original/decrypted file. This type of Encryption/Decryption sc |
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heme is often called a Substitution Cipher.</pre> |
heme is often called a Substitution Cipher.</pre> |
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=={{header|MiniScript}}== |
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<lang MiniScript>alphabet = "abcdefghijklmnopqrstuvwxyz".split("") |
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cipher = alphabet[0:] |
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cipher.shuffle |
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encode = {} |
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decode = {} |
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for i in alphabet.indexes |
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encode[alphabet[i]] = cipher[i] |
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decode[cipher[i]] = alphabet[i] |
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encode[alphabet[i].upper] = cipher[i].upper |
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decode[cipher[i].upper] = alphabet[i].upper |
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end for |
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apply = function(map, s) |
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chars = s.split("") |
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for i in chars.indexes |
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if map.hasIndex(chars[i]) then chars[i] = map[chars[i]] |
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end for |
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return chars.join("") |
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end function |
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msg = "Now is the time for all good men (and women) to come together." |
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secretCode = apply(encode, msg) |
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print secretCode |
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print apply(decode, secretCode)</lang> |
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{{out}} |
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<pre>Rzs ho wft whxt bzv ykk nzzg xtr (yrg szxtr) wz jzxt wzntwftv. |
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Now is the time for all good men (and women) to come together.</pre> |
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=={{header|Perl}}== |
=={{header|Perl}}== |
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