RSA Chat App For Encryption and Decryption

I am looking for a developer to create an RSA Chat App for Encryption and Decryption. Here are the project requirements:

Programming Language:
- The app should be developed using Python.

Features and Functions:
- The app should only include the basic encryption and decryption functions, without any additional features or functions.
- No extra security features or user management features are required.

Ideal Skills and Experience:
- Proficiency in Python programming language.
- Experience in developing chat applications for both iOS and Android platforms.
- Knowledge of RSA encryption and decryption algorithms.

Please provide examples of your previous work related to chat app development and encryption/decryption functions.

Kindly go through the attached DOC for the job description.