SSH login without password

Too often I have to login on different server over ssh in order to do my daily duties.
If you are using PuTTY on Windows you can pass your login credentials in command line. In such way you can create a shortcut and skip the login process.
ssh does not have such command line option, but you can achieve the same effect with few simple steps.

openssl_sign in python

You need to sign something with private RSA key. You have some documentation or make your google search about subject.  And all excamples are with PHP function openssl_sign.

But we don't eat PHP anymore. So let's translate few lines PHP into something better, like Python.