HP procurve 5300xl Series Access Security Manual page 154

Configuring Secure Shell (SSH)
Messages Related to SSH Operation
Message
Generating new RSA host key.
cache is depleted, this could take up to
two minutes.
Host RSA key file corrupt or not found.
Use 'crypto key generate ssh rsa' to
create new host key.
6-28
Meaning
After you execute the crypto key generate ssh [rsa]
If the
command, the switch displays this message while it
is generating the key.
The switch's key is missing or corrupt. Use the crypto
key generate ssh [rsa] command to generate a new
key for the switch.