network security project (C++)

As a developer in a company specialized in cyber security solutions development, you were assigned a task to develop a C++ for the purpose of data encryption, decryption, secure key exchange, and digital signature. You are required to develop an application that satisfies the following security standards: 1) The application should make use of a computationally secure and fast encryption/decryption algorithm. 2) The application should support a secure key exchange protocol to share the private key used for encryption and decryption processes. 3) The application should provide a mechanism to ensure the messages integrity and non-repudiation security services through implementing certain security algorithm(s). Your application should abide to the following specifications: 1. A GUI application where a user can write a message (String) to be encrypted/decrypted, and perform other relevant security functions. 2. The interface should allow the user to generate a symmetric-key, and then encrypt, and decrypt the messages. 3. The user can prepare the symmetric-key to be securely exchanged with other parties through implementing suitable security algorithm. 4. The interface should allow the user to perform certain security function(s) that ensure the integrity of the message and the user cannot deny sending the message. example: • The user can use the GUI to write a string message. (optional) • The user generates the symmetric-key and then encrypt the message. • The cipher text should be displayed on the screen. • The user decrypts the message using the same key, and the plaintext should be displayed on the screen to make sure that the crypto algorithm works correctly. • The user can prepare the symmetric-key to be exchanged securely later. • Eventually, the user can implement certain security algorithm(s) to ensure the message integrity and non-repudiation.