[Contents] [Index]

About This Document >>     Installing SSH Tectia Server for IBM z/OS >>     Using SSH Tectia Server for IBM z/OS >>     Configuring the Server >>         Configuration Files >>             Editing Configuration Files             Command-Line Options             Recommended Algorithms for Mainframe Environment             Crypto Hardware Support             Configuration Options in Load-Balanced Environments             Running SSH Tectia and OpenSSH in a z/OS Environment         Subconfigurations >>         Ciphers and MACs         Compression         Configuring Root Logins         Restricting User Logins         Subsystems         Auditing >>         Securing the Server >>         Default sshd2_config Configuration File         Default ssh_certd_config Configuration File     Configuring the Client >>     Authentication >>     Troubleshooting SSH Tectia Server for IBM z/OS >>     Examples of Use >>     Man Pages >>     Log Messages >>

Crypto Hardware Support

The configuration file has a keyword, UseCryptoHardware, that governs the use of crypto hardware. The available support depends on the processor model and on the devices that are installed. In the table below, CPACF is standard on z890 and z990 machines but is not available on other machines. The CCA column includes the following devices: CCF, PCICC, PCIXCC and CEX2. The Accelerator column includes the PCICA device, PCIXCC and CEX2.

	CPACF	CCA	Accelerator
3DES-CBC	x	x
SHA1	x
RNG		x
[RSA]		[x]	[x]
[DH]			[x]
RACF certificate		x

If any crypto hardware devices are to be used, the machine or the LPAR must be enabled for cryptography.

Note: The current release has no hardware support for RSA or DH.

FIPS Mode

FIPS mode is enabled when the IBM crypto hardware is used. FIPS mode is currently not available in SSH Tectia Server for IBM z/OS when the software crypto library is used.

Thus, if the UseCryptoHardware keyword defines algorithms for hardware acceleration, the FIPS mode is automatically enabled for the defined algorithms and cryptographic operations are performed according to the rules of the FIPS 140-2 certification standard. In all other configurations, FIPS mode is disabled.