DES

Data Encryption Standard c/c++

Input Instructions

1.For direct use of EXEs

1.Insert "1" for Encryption "0" for Decryption in DECIMAL Notation without quotes

2.Insert key in CAPITAL HEXA Notation (Input <= 16 HEXA Digits)

3.Insert Data in CAPITAL HEXA NOTATION (Input <= 16 HEXA Digits)

4.Insert a POSITIVE Number of times to run the algorithm in DECIMAL Notation where (0<=N), the larger N is the longer it takes!

2.For Recompiling the source code

1.Download both Debug.h & DES.cpp

2.Edit definitions in Debug.h to suppres undesired output

3.Compile & Run

Output

1.for Des_Rounds.exe you will get a final encrypted|Decrypted value with all intermediate stages

2.for DES_FinalOutputOnly.exe only one output line is printed on the fly

Sample