I have followed your discussion and I think there are some
misunderstandings.
First let me give you a short outline of "crypto" on IBM System z.
There is CPACF (CP Assist for Cryptographic Function), which is a
function unit within the CPs. CPACF supports a couple of symmetric
crypto operations like DES, AES, ..., as well as PRNG and SHA
algorithms. If you have the feature code for CPACF enabled, which is a
non-charge feature, you can use hardware acceleration for these
operations. Exploitation of the CPACF instructions is provided by a user
space library called libica.
Then there are also cryptographic coprocessors available for System z.
The cryptographic coprocessors support acceleration of the RSA
algorithm. Access to the coprocessors is provided by the cryptographic
device driver zcrypt (a.k.a. z90crypt). Exploitation for applications is
provided by libica.
Libica and the cryptographic device driver are open source. Further
documentation can be found in Chapter 6 of Device Drivers, Features and
Commands
http://download.boulder.ibm.com/ibmdl/pub/software/dw/linux390/docu/l26ddd00.pdf
Kevin, you are asking for performance figures. Maybe this link on IBM
developerworks can help:
http://www.ibm.com/developerworks/linux/linux390/perf/tuning_res_security_crypto.html
Regards,
Felix
John Summerfield wrote:
Kevin Evans wrote:
Has anbody had the Z9 cryptographic processors turned on for IFL use?
If so, do you have any performance figures?
Many thanks,
<shrug>
These emails are fine.
--
Cheers
John
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