Task 1: Coding DES, AES using cryptopp library

A. Required:

+) Mode of operations:

• Select mode from screen (using switch case)
• Support modes: ECB, CBC, OFB, CFB, CTR, XTS, CCM, GCM.

+) separate encryption function from decryption function:

Select from screen (using switch case)

+) inputs:

• Secret key, Initialization Vector IV, and nonce,..
• Select from screen (using switch case)

Case 1: Secret key and IV are randomly chosen for each run time using random generator using CryptoPP::AutoSeededRandomPool;

Case 2: Input Secret Key and IV from screen

Case 3: Input Secret Key and IV from file (using file name)

• Plaintext

  Case 1: Input from screen;

  Case 2: From files (using file name);

• Support Vietnamse (using setmode, UTF-16)

• Ciphertext

  Case 1: Input from screen;

  Case 2: From files (using file name);

  • Support Vietnamse (using setmode, UTF-16)

+) Ouputs (hex or base64 encode, binary):

• display in screen;

• write to file;

Task 2: Coding AES using only C++ without other cryptographic external libraries;

Required:

+) Plaintext:

• Input from screen;
• Support Vietnamese (using _setmode, UTF-16)

+) Mode of operations

Using CBC mode

+) Secret key and Initialization Vector (IV)

Input Secret Key and IV from screen

Note for task 1, task 2 inmplemetation in order

1. modes?
2. encryption or decryption?
3. inputs?
4. ouputs?