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ROT Cipher

Tool to decrypt/encrypt by ROT. The code ROT for Rotation (which most common variant is Caesar Cipher) is the easiest shift-based encryption cipher.

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ROT Cipher -

Tag(s) : Substitution Cipher

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ROT Cipher

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ROT Cipher Decoder



Automatic Decryption (Brute-force)

Custom Decryption








➠ Caesar Cipher — Shift Cipher — ROT-13 Cipher — ROT-47 Cipher

ROT-n Encoder










➠ Caesar Cipher — Shift Cipher — ROT-13 Cipher — ROT-47 Cipher

Tool to decrypt/encrypt by ROT. The code ROT for Rotation (which most common variant is Caesar Cipher) is the easiest shift-based encryption cipher.

Answers to Questions

How to encrypt using Rot cipher?

Rot-N or Rot cipher is a simple character substitution based on a shift (or rotation) of an alphabet. E.g. one letter is replaced by another (always the same) that is located further in the alphabet.

This is the basis of the famous Caesar code and its many variants modifying the shift. The most popular variant is the ROT13 which has the advantage of being reversible with a 26 letter alphabet (the encryption or decryption operations are identical because 13 is half of 26).

Plain AlphabetABCDEFGHIJKLMNOPQRSTUVWXYZ
Cipher Alphabet
Shift/Rotation of 1		BCDEFGHIJKLMNOPQRSTUVWXYZA
Cipher Alphabet
Shift/Rotation of 2		CDEFGHIJKLMNOPQRSTUVWXYZAB
......
Cipher Alphabet
Shift/Rotation of 13		NOPQRSTUVWXYZABCDEFGHIJKLM
......

Example: The message ROTATION coded on the alphabet ABCDEFGHIJKLMNOPQRSTUVWXYZ with an offset of N=13, gives the encrypted message EBGNGVBA.

How to decrypt Rot cipher?

Deciphering Rot is very similar (or sometimes identical) to encryption, with a shift of the alphabet in the other direction.

What are rot variants?

A variant of Rot consists of modifying the alphabet used, which may be different from the 26 characters (A to Z).

Not to mention special cases, such as Rot13, or Rot47 (for expansion to ASCII characters).

Source code

dCode retains ownership of the source code of the script ROT Cipher online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be given for free. To download the online ROT Cipher script for offline use on PC, iPhone or Android, ask for price quote on contact page !

Questions / Comments

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