Data commit

Task/Vigen-re-cipher/11l/vigen-re-cipher.11l

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+F encrypt(key, text)
+   V out = ‘’
+   V j = 0
+   L(c) text
+      I !c.is_alpha()
+         L.continue
+      out ‘’= Char(code' (c.uppercase().code + key[j].code - 2 * ‘A’.code) % 26 + ‘A’.code)
+      j = (j + 1) % key.len
+   R out
+
+F decrypt(key, text)
+   V out = ‘’
+   V j = 0
+   L(c) text
+      I !c.is_alpha()
+         L.continue
+      out ‘’= Char(code' (c.code - key[j].code + 26) % 26 + ‘A’.code)
+      j = (j + 1) % key.len
+   R out
+
+V key = ‘VIGENERECIPHER’
+V original = ‘Beware the Jabberwock, my son! The jaws that bite, the claws that catch!’
+V encrypted = encrypt(key, original)
+V decrypted = decrypt(key, encrypted)
+
+print(original)
+print(‘Encrypted: ’encrypted)
+print(‘Decrypted: ’decrypted)