How to select SSH Private key from web browser?

[#1]

I have four CentOS machines, which I have to use to build a four node cluster. I have successfully installed Ambari server on one node. I have logged into ambari dashboard through google chrome from a windows 7 machine. The cluster installation wizard is asking me for 'SSH Private Key'. I have the key in the node which is running ambari server. I tried to use filezilla to get the id_rsa file from centos to windows 7 machine, but I get 'critical file transfer error'. If I copy paste the contents of the key, I get permission error, which might be due to some extra characters etc. present in the text while I copied. So the question is, how do I get the id_rsa private key to windows 7 machine or how do I choose the private key properly on a web browser?

I can confirm you that I am able to SSH from all the machines to other machines.

[#2]

Normally Copy and paste works. Do you use putty? Also if filezilla fails you could use winscp. But normally he tells you more than critical transfer error.

[#3 · Accepted solution]

I figured it out myself. I copied the id_rsa file to another folder and executed chmod 777 id_rsa command. The id_rsa file has some permissions blocked so after giving the proper permission, I was able to copy file through Filezilla.