This is simple realization how RSA encrypting algorithm works. Python 3+ required Read more about RSA: https://en.wikipedia.org/wiki/RSA_(cryptosystem)

nullr00t 69b6bf7368 Simple_RSA_Tool %!s(int64=3) %!d(string=hai) anos
Crypto 69b6bf7368 Simple_RSA_Tool %!s(int64=3) %!d(string=hai) anos
Cryptodome 69b6bf7368 Simple_RSA_Tool %!s(int64=3) %!d(string=hai) anos
Keys 69b6bf7368 Simple_RSA_Tool %!s(int64=3) %!d(string=hai) anos
RSA.py 69b6bf7368 Simple_RSA_Tool %!s(int64=3) %!d(string=hai) anos
testfile.txt 69b6bf7368 Simple_RSA_Tool %!s(int64=3) %!d(string=hai) anos