Preface This IBM® Redbook provides detailed information on the implementation of hardware cryptography in the new System z9TM, along with the new version of the Trusted Key Entry (TKE) workstation that is required when a TKE is to manage System z9 cryptographic coprocessors. It also addresses the CKDS sysplex support delivered in ICSF HCR7730, which is not dependent on the use of a System z9. It is expected that the reader is familiar with zSeries® hardware cryptography implementation and the purpose and usage of the TKE workstation. Other RedbooksTM that may help provide necessary background information are: Exploiting S/390 Hardware Cryptography with Trusted Key Entry, SG24-5455 S/390 Crypto PCI Implementation Guide, SG24-5942 zSeries Crypto Guide Update, SG24-6870 IBM Eserver zSeries 990 (z990) Cryptography Implementation, SG24-7070 The team that wrote this redbook This redbook was produced by a team of specialists from around the world working at the International Technical Support Organization, in the Montpellier Products and Solutions Support Center (PSSC). Patrick Kappeler led this redbook project. He joined IBM in 1970 as a diagnostic program