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Decoded

Scytale
Max chars per lap

Encoded

Scytale
Max chars per lap

About Scytale Cipher

Scytale cipher is one of the transposition ciphers. Scytale means baton in Greek.

A strip of parchment is wrapped around the scytale and encrypted by writing characters across the parchment.

The encryption key is the number of characters that can be written in one round of the scytale.

For example, when "THIS_IS_A_SECRET_MESSAGE" is encrypted with 4 characters per one round of the scytale, it is as follows.

1. Place the characters across the strip of parchment.

-----------------------------------
     | T | H | I | S | _ | I |___|
     | S | _ | A | _ | S | E |
  ___| C | R | E | T | _ | M |
 |   | E | S | S | A | G | E |
-----------------------------------

2. It is encrypted by unwinding the parchment from the scytale.

TSCEH_RSIAESS_TA_S_GIEME