What am I doing wrong when I try to access a Linux machine with an ssh key?

Question

ubuntu

ubuntu server 32bit 14.04
OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.6, OpenSSL 1.0.1f 6 Jan 2014
Trying with win 8.1 via putty
My steps.
ssh-keygen -t rsa
create 2 file id_rsa and id_rsa.pub
touch ~ / .ssh / the authorized_keys
cat id_rsa.pub >> the authorized_keys
contents of the authorized_keys:
the ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDTsN81f / yuwu38hzId93jZ / 4KTCaIWXmt2NhviDn / CsEI6qA3viMCewsf0jklQ5ZCBrT6Rocpvk6wgGHqGjvZjWHPnponaUhBwgbSqrap / iz6Vog / P17IUXCAD7ULt78SPFvqCOc + BQfsIVL61 / CBUTRDX4z1Qy5F5jjBk2EOJgYWID34V3GVvoQ9ziAg2m8KegHtjwG0FvYvOk8Bsmpl / ij2KpnXRaVkBrIZt4NgbjGD7UvYcrqxWRQH45o+sSM49pR85PmokgZ11SbpW3RA2cBwCvAHey2ZRTT6QuKM10X19+Yi5V0S1+1JfkaQsOgEOjd/XA4JxlaOqD5+Lr5sB [email protected]_rsa
copy to Windows.
I open it in puttygen. Load, Save private key. I save the ppk file. I open putty, specify ubunt ip, port 22, deployer user. SSH->Auth->Private key file. Open.
the console writes server refuted our key. And it asks for the user's password. I dial - lets.
Permissions on authorized_keys 600

Answer 1

drop ssh config (/etc/ssh/sshd_config)

Answer 2

If you do it through pageant, then the console does not even write that the key is rejected, but immediately prompts you to enter the user's password