Encryting: rsa_system.py -e test
Decrypting: rsa_system.py -d test.asn1
Sign file: rsa_system.py -s test
Check sign rsa_system.py -c test
Common module attack: common_module.py
Wiener's attack: wieners.py
Small order attack: small_order.py
Client: dh_client.py <address> <port> <file>
Server: dh_server.py <port>