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First experiences with hardware cryptographic support for OpenSSH with Linux for System z

Document Author:
Additional Author(s):

Manfred Gnirss
Winfried Münch, Klaus Werner, Arthur Winterling

Document ID:


Doc. Organization:

Technical Sales Support - Europe

Document Revised:


Product(s) covered:

Crypto Coprocessor; IBM System z; Linux; Linux on zSeries; z9 BC; z9 EC; z10; z10 BC; z10 EC; zSeries 890; zSeries 990; zSeries; z/VM

Abstract: This paper summarizes our first experiences with configuration of OpenSSH using hardware cryptographic support of IBM System z. We report our first impression of performance and throughput improvements. Our positive experience indicates that where possible, you should exploit this new capability when using OpenSSH.

MG_OpenSSH_with_HWCrypto.pdf MG_OpenSSH_with_HWCrypto.pdf


Hardware; Software; Solutions




IBM Security Solution


IBM System z Family

S/W Pillar(s):

IBM System z Software


Linux; z/VM


OpenSSH, SSH, SCP, SFTP, OpenSSL, Linux, System z, CPACF, Crypto Express, hardware cryptographic support, acceleration, AES, TDES, SHA, RSA, performance, throughput

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