Security

About Cyber Security

Cyber security is the practice of protecting computer systems, networks, and data from unauthorized access, use, disclosure, disruption, modification, or destruction. It's like a digital defense mechanism, guarding our valuable information and online activities from malicious actors.

Let's study some the important top computer security practicals developed using C programming language. These programs demonstrate how Cryptographic Algorithms are implemented to enhance the software security.

Cryptography Practicals

Following Encryption and Decryption Programs are based on C and Java Programming.

• Use of Username and Password (login id password) functionality.
• To print password as star ( ***** ).
• Encrypt password using Caesar cipher.
• Caesar Cipher - File Encryption
• Caesar Cipher - File Decryption
• Use of XOR operations on two numbers.
• Simple Hash function implementation on 8 bits using XOR operation.
• C program to implement sender side confidentiality.
• C program to implement receiver side confidentiality.
• Playfair Key Matrix Generation: Keyword validation according to the specification given in the Playfair algorithm.
• Simple Railfense - Encryption
• Playfair Encryption
• Playfair Decryption
• Simulation of Simplified DES - Initial Permutation function
• Key Generation in Simplified DES
• AES Encryption Decryption

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