MATLAB Implementation of DES Encryption and Decryption Algorithm
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Resource Overview
Implementation of DES encryption and decryption using MATLAB, supporting string encryption and document encryption/decryption operations with technical documentation
Detailed Documentation
This project implements the Data Encryption Standard (DES) algorithm using MATLAB programming language, providing secure encryption and decryption capabilities for both strings and documents. The implementation features key generation through permutation and shifting operations, 16 rounds of Feistel network processing with substitution boxes (S-boxes) and permutation boxes (P-boxes), and final permutation to produce ciphertext. The code includes functions for handling different data types, with file I/O operations for document processing and string conversion routines for text encryption. This technology has widespread applications in academic papers and secure data transmission systems, demonstrating practical cryptography implementation using MATLAB's matrix operations and bit manipulation capabilities.
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