Command Line Interface
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Example
ip ssh crypto host-key generate
This command generates the host key pair (i.e., public and private).
Syntax
ip ssh crypto host-key generate [dsa | rsa]
• dsa – DSA (Version 2) key type.
• rsa – RSA (Version 1) key type.
Default Setting
Generates both the DSA and RSA key pairs.
Command Mode
Privileged Exec
Command Usage
• This command stores the host key pair in memory (i.e., RAM). Use the ip ssh
save host-key command to save the host key pair to flash memory.
• Some SSH client programs automatically add the public key to the known
hosts file as part of the configuration process. Otherwise, you must manually
create a known hosts file and place the host public key in it.
• The SSH server uses this host key to negotiate a session key and encryption
method with the client trying to connect to it.
Example
Related Commands
ip ssh crypto zeroize (4-48)
ip ssh save host-key (4-49)
ip ssh crypto zeroize
This command clears the host key from memory (i.e. RAM).
Syntax
ip ssh crypto zeroize [dsa | rsa]
• dsa – DSA key type.
• rsa – RSA key type.
Default Setting
Clears both the DSA and RSA key.
Console#delete public-key admin dsa
Console#
Console#ip ssh crypto host-key generate dsa
Console#
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