Cifra de César

Content rating
Everyone
1K+
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Everyone
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About this app

The Caesar Cipher is a basic encryption method created by Julius Caesar to communicate between his generals.

The method consists of exchanging the letters of the original message for another letter of the alphabet and moving it by a certain number of positions, to the right or left. Considering only alphabetic characters, upper or lower case.

Accents, numbers or any other special characters will be disregarded. If you use accented vowels or c cedilha (ç), both will be replaced by their unaccented equivalents.

This number of displacements is the key to encrypting and deciphering the text. The key number can vary from 1 to 25, as there are only 26 letters in the alphabet.

So, if, for example, we use the key 3, each letter will be replaced by the 3rd letter to its right, considering its position in the alphabet. That is, the letter "A" will be replaced by the letter "D". To decipher, just do the reverse process.

However, the Caesar Cipher demonstrates safe decline, as it is easily broken. Therefore, the Caesar Cipher is not suitable for protecting more sensitive information, although it is useful for teaching purposes due to its simplicity.

Resource:
- Break Cipher: Lists the decrypted message with all 25 available keys to find the original message.
Updated on
Mar 10, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App info and performance and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

What’s new

- Performance optimizations;
- New modern and responsive UI;
- Bug fixes.
Content rating
Everyone
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App support

About the developer
Antonio Carlos Pereira Filho
cf.studios.dev@gmail.com
Brazil