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Configuring a client's host public key
In publickey authentication, the server compares the SSH username and the client's host public key
received from the client with the locally saved SSH username and the client's host public key. If they
are the same, the server checks the digital signature that the client sends. The client generates the
digital signature by using the private key that is paired with the client's host public key.
For publickey authentication, password-publickey authentication, or any authentication, you must
perform the following tasks:
1.
Configure the client's DSA, ECDSA, or RSA host public key on the server.
As a best practice, configure no more than 20 SSH client's host public keys on an SSH server.
2.
Specify the associated host private key on the client to generate the digital signature.
If the device acts as an SSH client, specify the public key algorithm on the client. The algorithm
determines the associated host private key for generating the digital signature.
You can enter the content of a client's host public key or import the client's host public key from the
public key file. Import the client's host public key as a best practice.
Entering a client's host public key
Before you enter the client's host public key, you must use the
display public-key local public
command on the client to obtain the client's host public key.
To enter a client's host public key:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter public key view.
public-key peer keyname
N/A
3.
Configure a client's host
public key.
Enter the content of the client's
host public key
The host public key must be in the
DER encoding format without
being converted.
When you enter the content of a
client's host public key, you can
use spaces and carriage returns
between characters. When you
save the host public key, spaces
and carriage returns are removed
automatically.
For more information, see
"
."
4.
Return to system view.
peer-public-key
end
N/A
Importing a client's host public key from the public key file
Before you import the host public key, upload the client's public key file (in binary) to the server, for
example, through FTP or TFTP. During the import process, the server automatically converts the
host public key in the public key file to a string in PKCS format.
To import a client's host public key from the public key file:
Step Command
1.
Enter system view.
system-view
2.
Import a client's public key
from the public key file.
public-key peer keyname
import sshkey
filename
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