Man ssh-keygen linux

Linux / Unix ssh-keygen: Create A Host Key File. H ow do I create a host key file to use with my applications as I can not use system defined /etc/ssh/ssh_host_rsa_key for non-root account under Linux / Unix / Apple OS X / *BSD operating systems. You need to use a command called ssh-keygen. This command generates, manages and converts authentication keys for ssh. It can create RSA keys for use by SSH protocol version 1 and RSA or DSA keys for use by SSH protocol version 2. he type of key to be generated is specified with the -t option. If invoked without any arguments, ssh-keygen will generate an RSA key for use in SSH protocol 2 connections. The -f option specifies the filename of the key file. Why create a new host key files. You may need a new key file. Your system is compromised. Your keys are stolen. You forgotten the passphrase. Your application need a new host key. You can not read the default system key files stored in /etc/ssh/ directory but your non-root application needs key. You got an error message which read as Could not load host key: /etc/ssh/ssh_host_key. ssh-keygen Syntax. ssh-keygen -t 'rsa|dsa|rsa1' -f /path/to/file. Create a host key file in your as follows. First, create a directory to store your host key file, enter: $ mkdir -p To create a host RSAv2 key file, run: $ ssh-keygen -t rsa -f Sample outputs. Type the following commands to verify the keys: $ ls -l Sample outputs. You can now use keys with your app: $ mycool-app -key -d. Posted by: Vivek Gite. The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter. Facebook. Google. Share this on. Your support makes a big difference. I have a small favor to ask. More people are reading the nixCraft. Many of you block advertising which is your right, and advertising revenues are not sufficient to cover my operating costs. So you can see why I need to ask for your help. The nixCraft, takes a lot of my time and hard work to produce. If you use nixCraft, who likes it, helps me with donations. T-shirt: Sysadmin because even developers need heros.