Public and private RSA key

[vakaman]

I'm trying to use the public and private key, generated by Putty, but when i use the two keys on putty, it works fine, but if i try to use the key's on your code, i get the following error: INVALID SIZE
What is the way that you did, to generate the private and public key, to use with your code?

thank you so much

[thelfensdrfer]

I am using linux or mac. The Keys which are generated with putty are different. Here are detailed instructions on how to use/convert the keys: https://stackoverflow.com/a/2224204/1100089