How to Use the RC4 Decryption Tool

This tool allows you to decrypt data that was encrypted using the RC4 algorithm. RC4 is a stream cipher, and this tool expects the encrypted data to be in Base64 format.

1. Input Data: You can paste the encrypted text directly, provide a JSON object containing a ciphertext field, or upload a file. The tool will automatically process the input.
2. Provide Secret Key: Enter the secret key that was used to encrypt the data. The key must be an exact match for the decryption to be successful.
3. Decrypt: Click the "Decrypt" button to start the process.
4. Get Output: The decrypted data will appear in the output section. You can then copy it to your clipboard or download it as a text file.

About RC4 Decryption

RC4 is a symmetric stream cipher, meaning the same key is used for both encryption and decryption. It is simple and fast, but it has known vulnerabilities and is not considered secure for many modern applications, especially for use in protocols like TLS. It is important to be aware of these security issues when using RC4.

Key aspects of RC4 decryption:

• Secret Key: The security of RC4 depends entirely on the secrecy of the key.
• Ciphertext: The encrypted data, which this tool assumes is Base64 encoded.
• Decryption Process: The tool applies the RC4 algorithm with your secret key to the ciphertext to produce the original plaintext. If the key is incorrect or the data is not valid Base64, the decryption will fail.

Example:

If you encrypted the text "Hello World" with the secret key "secret", you would get a Base64 string. Pasting that string into the input and providing "secret" as the key will decrypt it back to "Hello World".