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ROT-13 Cipher

Tool to decrypt/encrypt with rot13. ROT-13 cipher is a particular case of the Caesar cipher, where the shift is equal to 13, this allow the cipher to be reciprocal.

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ROT-13 Cipher -

Tag(s) : Cryptography,Substitution Cipher

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ROT-13 Cipher

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ROT13 Decoder




Also on dCode: Caesar Cipher

ROT13 Encoder




Also on dCode: Caesar Cipher

Tool to decrypt/encrypt with rot13. ROT-13 cipher is a particular case of the Caesar cipher, where the shift is equal to 13, this allow the cipher to be reciprocal.

Answers to Questions

How to encrypt using Rot-13?

Encryption with Rot-13 replaces a letterhref by another one placed 13 position after in the alphabet

ABCDEFGHIJKLM
NOPQRSTUVWXYZ

DCODE is crypted QPBQR with ROT-13

How to decrypt Rot-13 cipher?

Rot-13 decryption is identical to encryption, due to the reciprocal substituting alphabet used:

ABCDEFGHIJKLM
NOPQRSTUVWXYZ

QPBQR becomes DCODE.

How to recognize ROT-13 ciphered text?

Frequency analysishref shows a shift of 13 letters. The ciphered message has an index of coincidencehref similar to the language of the plain text.

What are the variants of the Rot-13 cipher?

Rot-13 is in fact a Caesar cipherhref with a shift of 13. As this code only works with letters, it was proposed to use it with the Rot5href for numbers or the Rot47href for ASCIIhref values.

What is the particularity of ROT13 Cipher?

A 13 shift allow the code to be reciproqual, this means that 2 consecutive encryption lead to find the original text.

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Source code

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Questions / Comments


Team dCode read all messages and answer them if you leave an email (not published). It is thanks to you that dCode has the best ROT-13 Cipher tool. Thank you.


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