This program is intended to protect the valuable information from unauthorized access. The protection is performed by encrypting the data, contained in the files. Instead of using a password, Signature Cryptographer uses the key-files for encryption. In that way, the length of the password may amount to the huge sizes (or even exceed the length of the input file, making the encrypted file theoretically unbreakable).  
 
The program's encryption algorithm is based on the Signature encryption algorithm, fully described in the online help system.  
 
To receive any additional information, feel free to ask your questions in Binary Insight Software support forums.