Key
Specify a character string as the encryption/decryption
key. The key is case-sensitive. The more characters
you enter as an encryption key, the more secure it is.
The key itself is not used for encryption and decryption,
instead it is digested to the actual key.
The key is not saved on your hard disk. If the corresponding
security option is enabled, the key is stored in an encrypted
state in the RAM as long as WinHex is running.