Remove the DigiCert root CA pinning. The root CA used for the chain of trust can
change in the future therefore let's remove this check. If someone wants to
enforce the usage of a specific root CA it can be selected by the genprotimg
command line option `--root-ca $CA`. Make it transparent to the user which root
CA is actually being used by printing the subject name of the root CA to stdout
in verbose mode.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Acked-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Reviewed-and-tested-by: Nico Boehr <nrb@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Sometimes dumping a virtual machine from the outside is the only way to
get the data that is needed. This can be the case if a dumping mechanism
like kdump hasn't been configured or data needs to be fetched at a
specific point. Dumping a protected guest from the outside without help
from FW/HW doesn't yield sufficient data to be useful. Hence we now
introduce Protected Virtualization (PV) dump support.
The PV dump support works by integrating the firmware into the dump
process. New Ultravisor calls are used to initiate the dump process,
dump cpu data, dump memory state and lastly complete the dump process.
The guest's data is fully encrypted and can only be decrypted by the
entity that owns the customer communication key for the dumped guest.
Also dumping needs to be allowed via a flag in the SE header.
This patch adds support for PV guest dumps to genprotimg. To prepare a
PV image in order that the PV guest can later be dumped from the
outside, the user has to provide a customer communication key used for
the dump process and he has to set the corresponding control flag. For
specifying the customer communication key a new command line option
`--comm-key` is added and for enabling/disabling the control flag the
command line options `--enable-dump` and `--disable-dump` are added.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Acked-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Introduce a private macro for the calculation of the control flags and
sort the flags by bit value.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Allow the PCKMO-encrypt-DEA/TDEA/AES/ECC-key functions to be used in a protected
virtualization guest by default.
Acked-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
The new name reflects that it's a plaintext control flag. While at it, use a
left shift operation to calculate the value.
Acked-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Add host-key document verification support to genprotimg. This ensures
that a host-key document is genuine and provided by IBM. For this the
user must provide the IBM Z signing key, the intermediate CA
certificate (signed by the root CA used) so a chain of trust starting
from the host-key document and ending in the root CA can be
established.
By default, genprotimg tries to download all revocation lists needed
by looking up in the corresponding certificate on how CRL information
can be obtained (see https://tools.ietf.org/html/rfc5280#section-4.2.1.13
for details).
Acked-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Protected VMs (PVM) are KVM VMs, where KVM can't access the VM's state
like guest memory and guest registers anymore. Instead the PVMs are
mostly managed by a new entity called Ultravisor (UV), which provides
an API, so KVM and the PV can request management actions.
PVMs are encrypted at rest and protected from hypervisor access while
running. They switch from a normal operation into protected mode, so
we can still use the standard boot process to load an encrypted image
and then move it into protected mode.
This commit adds the tool 'genprotimg'. It takes a kernel, key files,
optionally an initrd, optionally a file with the kernel command line,
and it generates a single, loadable image file. The image consists of
a concatenation of a plain text boot loader, the encrypted components
for kernel, initrd, and cmdline, and the integrity-protected PV
header, containing metadata necessary for running the guest in PV
mode.
It's possible to use this image file as a kernel for zipl or for a
direct kernel boot using QEMU.
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Acked-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
