Columnar Transposition
Encrypt and decrypt text using the Columnar Transposition cipher, locally in your browser.
🔒 Your data is processed locally in your browser and is never uploaded to our servers.
How it works
The Columnar Transposition cipher writes the message into rows under a keyword and then reads the columns according to the alphabetical order of the keyword letters.
Examples
Keyword: ZEBRA
The keyword determines the order in which columns are read during encryption.
Security notes
Columnar Transposition is a classical transposition cipher and does not provide modern cryptographic security. It should not be used to protect sensitive information.
FAQ
What is the keyword used for?
The keyword determines the order of the columns during encryption and decryption.
Are spaces preserved?
Yes. Spaces, numbers and punctuation are preserved and rearranged like other characters.
Can the keyword contain spaces?
No. Use letters and numbers without spaces for the keyword.