Implementation of DES Algorithm C Program

Simple C Program For DES Algorithm in Cryptography

Learn How To Implement DES Algorithm in C Programming Language. The DES Encryption Algorithm is an implementation of Fiestel Cipher. There are two different methods enlist here for DES Algorithm implementation in C programming.

What is DES Encryption Algorithm?

The DES Algorithm is also sometimes referred to as Data Encryption Algorithm (DEA). The DES Encryption Algorithm is a symmetric key algorithm for the encryption of data. The block size is of 64 bits. The DES is an archetypal block cipher which takes a fixed length string of plaintext bits.

The Simplified DES (SDES) is a modified version of the Data Encryption Standard DES Algorithm. Another modified version of the DES Algorithm is famously known as Triple DES. The key generator method creates 16 48-bit keys.

C Program For DES Algorithm

Method 1: C Program To Implement Data Encryption Standard Algorithm

Custom Header File

Method 2: C Program To Implement DES Encryption Algorithm

If you have any doubts or compilation errors in this C Program To Implement DES Encryption Algorithm, let us know about it in the comment section below. Find more about DES Algorithm on Wikipedia.

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Tushar Soni

I am Tushar Soni, Co - Founder of CodingAlpha. I am a computer science student from India and passionate about Web Development and Programming. Connect with me on Facebook | LinkedIn | Google Plus

6 thoughts on “Implementation of DES Algorithm C Program

  • November 10, 2016 at 9:25 pm

    The DES Algorithm is really difficult to understand.

  • November 11, 2016 at 8:06 am

    What are the different types of algorithms which can be an alternative to DES Encryption algorithm?

    • November 11, 2016 at 8:16 am

      There are many alternatives to the DES algorithm such as:
      – BlowFish Algorithm
      64 bits
      – TwoFish Algorithm
      256 bits
      – RSA Algorithm
      – AES (Advanced Encryption Standard) –
      192, 256 and 128 bits
      – Triple DES
      68 bits, 112 bits

  • November 11, 2016 at 3:52 pm

    What about the MD5 Encryption algorithm? Is it not worth it?

  • November 16, 2016 at 7:17 pm

    This is such a simple DES algorithm. Thanks for this one. Amazing it is.

  • May 8, 2017 at 9:57 am

    There is another very good algorithm which has been developed to improve the DES algorithm and it is IDEA which stands for International Date Encryption System.


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