Double Transposition Cipher

The double transposition cipher (AKA double columnar transposition) was used by military forces in World War I and II. It is basically a columnar transposition followed by another columnar transposition. It is considered one of the most secure ciphers that can be performed by hand.

You must enter the message.

Keyword #1
You must enter the encryption key.
Keyword #2

Alphabet Key

Enter the key and click decode or encode to show.

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