Git – Permission denied (publickey)

This is a very common issue that most users face after installation of GIT.

Extensive troubleshooting of this GIT issue “Git – Permission denied (publickey)” can be done with the below command:

ssh -vT


OpenSSH_4.6p1, OpenSSL 0.9.8e 23 Feb 2007
debug1: Connecting to [] port 22.
debug1: Connection established.
debug1: identity file /c/Users/arvenkataraman/.ssh/identity type -1
debug1: identity file /c/Users/arvenkataraman/.ssh/id_rsa type -1
debug1: identity file /c/Users/arvenkataraman/.ssh/id_dsa type 2
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debia
debug1: match: OpenSSH_5.5p1 Debian-6+squeeze1+github9 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.6
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
The authenticity of host ' (' can't be established.
RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ',' (RSA) to the list of know
n hosts.
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /c/Users/arvenkataraman/.ssh/identity
debug1: Trying private key: /c/Users/arvenkataraman/.ssh/id_rsa
debug1: Offering public key: /c/Users/arvenkataraman/.ssh/id_dsa
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).



Step 1: Navigate to .ssh directory inside your home directory

         cd ~/.ssh

Step 2: Generate the public/private rsa key pair


Step 3: Copy the SSH key to the clipboard using the below command

         cat | clip

Step 4: Navigate to your GIT repository in

Step 5: Go to Account Settings


Step 6: Under Account Setting select SSH keys


Step 7:  Click on Add SSH key, paste the key copied to the clipboard (in Step 3) and store the key




Share and Enjoy:
  • Print
  • Digg
  • StumbleUpon
  • Facebook
  • Yahoo! Buzz
  • Twitter
  • Google Bookmarks


  1. [...] Then there was trouble connecting to the github client which contained the Cytoscape source code (“the authenticity of host ‘ (’ can’t be established”), which was very similar to the error on this webpage: [...]

Speak Your Mind