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ROT-5 Cipher

Tool to decrypt/encrypt with rot5. ROT-5 is an application of ROT-13 to the numbers, the shift of 5 makes the cipher reversible for numbers.

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ROT-5 Cipher -

Tag(s) : Cryptography, Substitution Cipher

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# ROT-5 Cipher

## ROT5 Encoder

Tool to decrypt/encrypt with rot5. ROT-5 is an application of ROT-13 to the numbers, the shift of 5 makes the cipher reversible for numbers.

### How to encrypt using Rot5?

Rot 5 applies on the numbers in a message. It involves replacing a digit by another by adding 5 (modulo 10).

Example: 1234567890
6789012345

Example: 248 is crypted 793 by ROT-5

### How to decrypt Rot-13 cipher?

Decryption of Rot5 is identical to the encryption because Rot5 is reversible.

Example: 1234567890
6789012345

Example: 793 re-becomes 248.

### How to recognize ROT-5 ciphertext?

ROT-5 is used on the digits. Numbers that began with 1 now begin with 6 etc.

According to Benford's law, there should be more 6 than 4 in the ciphertext.

### What are the variants of the Rot-5 cipher?

Rot-5 is already a variant of Rot13, itself a version of Caesar cipher with a shift of 13. Rot-5 is therefore a Caesar cipher with a shift of 5, but applied to the digits.

It is common to associate a ROT-13 for coding the letters and ROT-5 for the numbers at the same time.

### What a shift of 5 for Rot5?

A shift of 5 allows the code to be reciproqual, this means that 2 consecutive encryptions lead to find the original number.