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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) : Cryptography, Substitution Cipher

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ROT Cipher

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ROT-n Encoder










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-N cipher?

Rot-N 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 ROT13href 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).

Example: Consider the message ROTATION coded on the alphabet ABCDEFGHIJKLMNOPQRSTUVWXYZ with an offset of 'N = 13'

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 encrypted message is EBGNGVBA

How to decrypt Rot-N cipher?

Deciphering is very similar (or sometimes identical) to encryption. Just shift the alphabet in the other direction.

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Source code

dCode retains ownership of the source code of the script ROT Cipher. 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, etc.) which dCode owns rights can be transferred after sales quote. So if you need to download the ROT Cipher script for offline use, for you, your company or association, see you on contact page !

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