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In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. The method is named after Julius Caesar, who used it in his private correspondence. 
The Caesar cipher can be easily broken even in a ciphertext-only scenario. Two situations can be considered: 
1. an attacker knows (or guesses) that some sort of simple substitution cipher has been used, but not specifically that it is a Caesar scheme; 
2. an attacker knows that a Caesar cipher is in use, but does not know the shift value. 
Your task is to break hardcoded userid password and log in into application.

Caesar cipher

Última versão de Caesar cipher