I got this error after adding new user to the system (CentOS). The user key is generated using PuTTY Key Generator (PuTTYgen for short). Exact error (in /var/log/secure): … Apr 3 08:57:13 hostname sshd[28041]: error: buffer_get_ret: trying to get more bytes 4 than in buffer 0 Apr 3 08:57:13 hostname sshd[28041]: fatal: buffer_get_int: buffer error Apr 3 08:58:23 hostname sshd[29722]:…