Data Encryption Standard (DES) algorithm in cryptography | Matlab

Hello all in this video i have made a demo regarding Data Encryption Standard (DES) algorithm in cryptography. Most specifically i have explained DES algorithm in cryptography in Matlab.

Data Encryption Standard (DES) is a block cipher algorithm that takes plain text in blocks of 64 bits and converts them to cipher text using keys of 48 bits. It is a symmetric key algorithm which means that the same key is used for encrypting and decrypting data. The DES satisfies both the desired properties of block cipher. These two properties make cipher very strong. You can notice in the video that if i give wrong key the output displayed is also wrong. This prevents the input data from being hacked by third party or other unauthorized users.
The Data Encryption Standard (DES) is a symmetric-key block cipher published by the National Institute of Standards and Technology (NIST).

DES is an implementation of a Feistel Cipher. It uses 16 round Feistel structure. The block size is 64-bit. Though key length is 64-bit DES has an effective key length of 56 bits since 8 of the 64 bits of the key are not used by the encryption algorithm (function as check bits only). Since DES is based on the Feistel Cipher all that is required to specify DES is −

Round function
Key schedule
Any additional processing − Initial and final permutation

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timestamps
00:00 - Intro
00:18 - des algorithm matlab
00:30 - input des algorithm matlab
00:40 - des encryption matlab
00:50 - des decryption matlab
00:59 - des algorithm key matlab
1:03 - thankyou

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