Enter the text to be encrypted or decrypted in the input box.
Select an algorithm (AES, DES, RC4, Rabbit, TripleDES, or a hash algorithm).
Select the operation type (encryption/decryption; hash algorithms only support encryption).
Enter the key (except for hash algorithms, which require a key for HMAC).
Click "Execute" to generate the result, "Copy Result" to copy it, or "Clear" to reset it.