Talk:IBM z14

This is the talk page for discussing improvements to the IBM z14 article.
This is not a forum for general discussion of the article's subject.

Put new text under old text. Click here to start a new topic.
New to Wikipedia? Welcome! Learn to edit; get help.

Article policies

Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL

Computing

	This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ComputingWikipedia:WikiProject ComputingTemplate:WikiProject ComputingComputing articles
???	This article has not yet received a rating on the project's importance scale.
	This article is supported by Computer hardware task force.

CPACF

CPACF isn't really new with z14 but has been around since the z890. With each model, new ciphers and larger key length are supported. "CPACF is a set of cryptographic instructions available on all CPs of z990, z890, z9 EC, z9 BC, z10 EC and z10 BC." [1] Asymmetric encryption is done through CryptoExpress cards rather than the CPACF function on the PU.

While we're at it, maybe the full name CP Assist for Cryptographic Functions (CPACF) should be mentioned as well.

Compression and expansion are not done by CPACF. The only built-in compression support is through Compression Service Call (CPMSC) instruction that implements LZW compression through a dictionary prepared in advance. The zEnterprise Data Compression card (zEDC) is used for zlib compatible compression.

Rvdheij (talk)