Tool
Rail Fence Cipher
Write text in zig-zag rails and read row-by-row.
Open toolCategories / Topic
Transposition Ciphers
Learn how Rail Fence and Columnar Transposition ciphers hide messages by rearranging character positions without replacing the letters themselves.
Tools
Tool
Columnar Transposition Cipher
Write letters into keyword columns and read them back in alphabetical key order.
Open toolArticles
Rail Fence Cipher: The Zigzag That Hid the Message
How one of the simplest transposition ciphers scrambled plaintext by changing where the letters sit, not what the letters are.
Columnar Transposition Cipher: When the Key Rearranges the Columns
How a keyword turns a message into a grid, then hides it by changing the order in which the columns are read.