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Status Delivered
Workspace IBM Z and LinuxONE Systems Hardware
Categories Crypto HW
Created by Guest
Created on Jun 9, 2016

RELATED IDEAS

Using CPACF with HW "built-In" instructions - Linux on z

SV likes to use HW Crypto support of CPACF (see Principles of Operation) in their applications running on Linux for z Systems (LinuxONE)
As of requiremts of their architecture and as of performance reasons, they want to use the CPACF instructions directly within their application, which is purly C-code

Today they have to write some load-modules, which provide the HW instructions of CPACF, or they have to write inline assembler code. They would like to use the machine instructions directly.

Please, provide a solution to use CPACF without the detour of assembler.
This could be done may be as calls to a library?

For the ISV who requests such enhancement and also for other ISVs, a simplified way, which is not depending on using Assembler would be of a nice advantage.

Here is the ISV contact for this requirement:
Falk Reichbott
Leiter der technischen Entwicklung f?r die Produktfamilien FLIES? & FLAM?
limes datentechnik? gmbh
Louisenstrasse 21
D-61348 Bad Homburg v.d.H.
mobil: +49(0)1520-9827936
phone: +49(0)6172-5919-21
fax: +49(0)6172-5919-39
mailto: falk.reichbott@flam.de
web: www.flam.de & www.limes.de

Note: limes datentechnik provides applications for the Deutsche Bundesbank (federal bank of Germany)

Top priority is to get a solution for a C environment on Linux for z.

Idea priority Medium
  • Guest
    Reply
    |     Aug 24, 2020

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - z Systems Hardware
    Product - z Systems Hardware
    Component - Crypto HW

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - LinuxONE
    Product - IBM LinuxONE
    Component - Crypto HW

  • Guest
    Reply
    |     Nov 15, 2019

    .Delivered with Libica

  • Guest
    Reply
    |     Jun 3, 2019

    Has your requirement been met by the provided suggestion?

  • Guest
    Reply
    |     Jun 22, 2016

    The libica C-library should fullfill the requirement. Libica is shipped with every Linux on z distribution.
    libica provides C-interfaces for all clear key cryptographic functions supported by CPACF. It is described in the following document:
    https://www.ibm.com/support/knowledgecenter/linuxonibm/liaaf/lnz_r_cicnt.html

    libica is an open source library under IBM's CPL library.

    As an alternative to directly calling libica you can also call openCryptoki with the ica token using a PKCS #11 API. Yet another alternative would be to call libcrypto (with or w/o ibmca engine configured) which also exploits CAPCF to some extend (e.g. w/o ibmca no DES/3DES, no OFB, CFB modes, with ibmca no CTR, XTS modes)

    If libica does not fullfill your requirement, please explain what is missing.

  • Guest
    Reply
    |     Jun 14, 2016

    Creating a new RFE based on Community RFE #89782 in product IBM LinuxONE.

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