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A Clear Key / Secure Key / Protected Key Primer



Document Author:

Kathleen Fadden


Document ID:

WP100647


Doc. Organization:

IBM Systems


Document Revised:

07/22/2010


Product(s) covered:

ICSF







Abstract: Beginning with the latest updates to the z10 microcode and the new support in ICSF, FMID HCR7770, IBM cryptographic hardware supports three types of keys. This paper describes the basic differences between clear key, secure key and protected key, and is an introduction to how the hardware provides additional protection for secure keys. Understanding the difference between the three will help in designing the right cryptographic solutions and in determining the hardware requirements for the cryptographic work.

Clear Key Secure Key Protected Key Primer_100720.pdf



Classification:

Hardware; Software

Category:

Security




Platform(s):

IBM System z Family

S/W Pillar(s):

IBM System z Software

O/S:

z/OS

Keywords:

Crypto, clear key, secure key, secure, clear, key

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