Introduction - If you have any usage issues, please Google them yourself
To enter the hexadecimal number of encryption (to input characters into a binary integer, for example, two characters enter the 1F, converted into binary number 00011111), compare the input and output. When the input to change a bit when a few (such as the 1F to 1E), compare the output changes. An amendment to the procedure, making DES, 16 cycles of the end of each cycle can be a result of the output (shown as hexadecimal a few), that is, the output Li, Ri (1