Introduction - If you have any usage issues, please Google them yourself
This program is file encryption principle characters in the ASCII code in accordance with the first post-high four low-order 4 bits are encrypted 4 times (once for each transformation a key encryption), encryption will be high 4 and low 4-bit again Synthesis of new characters entered into the encrypted files. Variation of the encrypted key is: the new password to encrypt the original password different or the last character of the ASCII code of the high four or low 4. Decryption process is the process of encryption against.