RC4 is a stream cipher designed by Rivest for RSA Data Security (now RSA Security). It is a variable key-size stream cipher with byte-oriented operations. The algorithm is based on the use of a random permutation. For more information on RC4,
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To decipher a cipher text, you must provide the exact key that was used during its encryption process. Without this key, such content can not be decrypted. therefore, your encyrption and decryption keys must always be the same. This is very important...
To see the system in action, simply type any content as you wish in the
Plain Text field below and type any numbers or characters as your key in the
Enter Encryption Key field below because you will need this Encryption Key before you will be able to decrypt this same content that you are about to encrypt and finally click on the
Encrypt button to see the result or your encrypted content in the
Cipher Text field below.