To Decrypt data you either retrieve an Encrypted file or paste Encrypted text you have received. The proper Cypher-Key must then be retrieved. Push the "DECRYPT this Data-Now" button and the Decrypted text can then be saved to a file, or copied to the Clipboard easily. Cipher-Keys may be renamed to whatever you wish but when a specific Key is used to Encrypt a message it must also be used to Decrypt it, no matter what name changes that Key has been through. Since one Key may be used to Encrypt messages forever and since that same Key must be used to Decrypt all messages which it Encrypted, each person who receives an Encrypted message needs a copy of that Key to Decrypt it. If that one Key is used by a multitude of people then each individual who has that Key can thereby Decrypt all those peoples messages too since the same Key is the one which was used to Encrypt all those messages.