Service Manual

Parameters
rsa Enter the keyword rsa then the key size to generate a SSHv2 RSA host keys. The
range is from 1024 to 2048 if you did not enable FIPS mode; if you enabled FIPS
mode, you can only generate a 2048-bit key. The default is 1024.
NOTE: You must have a license to access the FIPS mode. For more
information, contact your Dell Networking representative.
rsa1 Enter the keyword rsa1 then the key size to generate a SSHv1 RSA host keys.
The range is from 1024 to 2048. The default is 1024.
NOTE: This option is not available in FIPS mode.
Defaults Key size 1024; if you enable FIPS mode, the key size is 2048.
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.12.0 Added support for FIPS mode on the S4810.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-6.1.1.0 Introduced on the E-Series.
Usage
Information
The host keys are required for key-exchange by the SSH server. If the keys are not found when you
enable the server (ip ssh server enable), the keys are automatically generated.
This command requires user interaction and generates a prompt prior to overwriting any existing host
keys.
NOTE: Only a user with superuser permissions should generate host-keys.
Example
Dell(conf)#crypto key generate rsa
Enter key size <1024-2048>. Default<1024> :
Host key already exists. Overwrite (y/n)?y
Generating 1024-bit SSHv2 RSA key.
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
Dell(conf)#
Dell(conf)#crypto key generate rsa1
Enter key size <1024-2048>. Default<1024> :
Host key already exists. Overwrite (y/n)?y
Generating 1024-bit SSHv1 RSA key.
! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! !
Dell(conf)#
Related
Commands
ip ssh server — enables the SSH server.
show crypto — displays the SSH host public keys.
1298 Security