H3C S5120-EI Series User Manual

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z Configuration of the public-key local create command can survive a reboot.
z The public-key local create rsa command generates two key pairs: one server key pair and one
host key pair. Each key pair consists of a public key and a private key.
z The length of an RSA key modulus is in the range 512 to 2048 bits. After entering the public-key
local create rsa command, you will be required to specify the modulus length. For security, a
modulus of at least 768 bits is recommended.
z The public-key local create dsa command generates only one key pair, that is, the host key pair.
z The length of a DSA key modulus is in the range 512 to 2048 bits. After entering the public-key
local create dsa command, you will be required to specify the modulus length. For security, a
modulus of at least 768 bits is recommended.
Displaying or Exporting the Local RSA or DSA Host Public Key
You can display the local RSA or DSA host public key on the screen or export it to a specified file, so as
to configure the local RSA or DSA host public key on the remote end.
Follow these steps to display or export the local RSA or DSA host public key:
To do… Use the command… Remarks
Enter system view
system-view
—
Display the local RSA host public key
on the screen in a specified format, or
export it to a specified file
public-key local export rsa
{ openssh | ssh1 | ssh2 }
[ filename ]
Display the local DSA host public key
on the screen in a specified format, or
export it to a specified file
public-key local export dsa
{ openssh | ssh2 } [ filename ]
Select a command
according to the
type of the key to
be exported.
Destroying an Asymmetric Key Pair
An asymmetric key pair may expire or leak. In this case, you need to destroy it and generate a new pair.
Follow these steps to destroy an asymmetric key pair:
To do… Use the command… Remarks
Enter system view
system-view
—
Destroy an asymmetric key pair public-key local destroy { dsa | rsa } Required
Configuring the Public Key of a Peer
To authenticate the remote host, you need to configure the RSA or DSA public key of that peer on the
local host.
To configure the public key of the peer, you can:

H3C S5120-EI Series Specifications

General

Brand	H3C
Model	S5120-EI Series
Category	Switch
Language	English