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For the tpm2_key_protector module, the TCG2 command submission function is the only difference between a QEMU instance and grub-emu. To test TPM2 key unsealing with a QEMU instance, it requires an extra OS image to invoke grub-protect to seal the LUKS key, rather than a simple grub-shell rescue CD image. On the other hand, grub-emu can share the emulated TPM2 device with the host, so that we can seal the LUKS key on host and test key unsealing with grub-emu. This test script firstly creates a simple LUKS image to be loaded as a loopback device in grub-emu. Then an emulated TPM2 device is created by "swtpm chardev" and PCR 0 and 1 are extended. There are several test cases in the script to test various settings. Each test case uses grub-protect or tpm2-tools to seal the LUKS password with PCR 0 and PCR 1. Then grub-emu is launched to load the LUKS image, try to mount the image with tpm2_key_protector_init and cryptomount, and verify the result. Based on the idea from Michael Chang. Cc: Michael Chang <mchang@suse.com> Cc: Stefan Berger <stefanb@linux.ibm.com> Cc: Glenn Washburn <development@efficientek.com> Signed-off-by: Gary Lin <glin@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Tested-by: Stefan Berger <stefanb@linux.ibm.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. See the file MAINTAINERS for information about the GRUB maintainers, etc. If you found a security vulnerability in the GRUB please check the SECURITY file to get more information how to properly report this kind of bugs to the maintainers. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'