Our team released a new tool: free, open source program, emcssh.
This program is a bridge between blockchain-based PKI and OpenSSH server daemon, and allows to retrieve ssh public keys from distributed EmerCoin Name-Value Storage.
Using this tool sysadmin can easily manage access permissions for users and groups for unlimited quantity of servers.
The program works on Linux/FreeBSD platforms, easily portable to other OSes.
EmerCoin NVS: http://emercoin.com/DNS_and_Name-Value_Storage