------- Comment From heinz-werner_se...@de.ibm.com 2018-08-20 05:46 EDT-------
================================
==         Request for Ubuntu 18.04      ===
================================

Prerequisites:
- pkey kernel module              -> kernel 4.11
- paes cipher kernel module   -> kernel 4.12

s390-tools
- zkey tool (first version)                               -> s390-tools-1.39.0
- zkey enhancements for secure key store  -> s390-tools-2.4.0

- zkey-cryptsetup support for HSM master key change with LUKS2
this need to be backported due to             -> s390-tools-2.6.0

- dm-crypt with protected keys (LUKS2 part in cryptsetup ) -> cryptsetup
2.0.3

/ect/crypttab Sector Size Support
Ubuntu: support f?r sector size parameter in Debian/Ubuntu crypttab parser 
shipped in distro specific cryptsetup package

-> not available yet , need to be done by Distro or crypttab parser
maintainers

Installer support
The Ubuntu installer when suggesting to use encrypted disks on IBM Z the 
installer should support the option to use the PAES cipher using the 
paes-xts-plain64 cipher mode (with key sizes 512 bits or 1024 bits).

Before offering the  the usage of the PAES cipher the installer should
check whether a CCA adapter (CEX4C, CEX5C, CEX6X, ...) is available on
the system.

For Ubuntu 18.04.x the following upgrades/backports are required
cryptsetup: upgrade version 2.0.2 to version >= 2.0.3
s390tools: backport
zkey as of version >= 2.4.0
zkey-cryptsetup as of version 2.6.0 (requires cryptsetup >= 2.0.3)
upgrade /etc/crypttab support

The Ubuntu 18.10 outlook is good wrt to protected key dm-crypt (PE for
data at-rest).

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https://bugs.launchpad.net/bugs/1781912

Title:
  Upgrade cryptsetup >= 2.0.3

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