Utilities is written in Python3 to create digital signature using RSA. Data protection, Lab 4-5

app.py is app to generate big prime numbers and calculate a^b or (a^b mod n) that use PyQt.

Uses:

• Miller–Rabin primality test
• Sieve of Eratosthenes
• Modular exponentiation
• RSA

These are screens of app.py

![here] (/screens/1.png "Main sreen") ![here] (/screens/2.png "Generated number")