mjhjmtu

I have a problem with ssh that keeps asking me for periphrase and password.

I first generated a public/private key-pair using

ssh-keygen -t rsa -C my-login@my-server.com

it ask me for a file to save the keys and a periphrase then generated

ssh-keygen -t rsa -C my-login@my-server.com
Generating public/private rsa key pair.
Enter file in which to save the key (/home/<USERNAME>/.ssh/id_rsa): SSH_priv_key
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in SSH_priv_key.
Your public key has been saved in SSH_priv_key.pub.
The key fingerprint is:
??:??:??:??:??:??:??:??:??:??:??:??:??:??:??:?? my-login@my-server.com

The key's randomart image is:
+---[RSA 2048]----+
.....

I then logged in to another shell and downloaded the private key from the first shell and entered

ssh -i ~/.ssh/private-key.txt my-login@my-server.com

at first it asked for for the periphrase and the password,
I did so (telling myself that this is maybe normal since its the first login from/to those shells)

then I logged out and tried to login again but it keep asking me for periphrase and the password.

So I'v read man ssh-keygen, google'd read docs/tutorials and changed then entered command to

ssh-keygen -trsa -b 2048 -f ~/.ssh/my-server.com

and tried to login again but got the same results.

I don't know what to do now.