Linux Kernel Integrity

linux-integrity@vger.kernel.org is the mailing list for TPM and IMA targeted patches and discussion.

• Subscription information is here: http://vger.kernel.org/vger-lists.html#linux-integrity

For non-trivial patch sets, such as patch sets that touch multiple subsystems, it is recommended to CC the linux-security-module@vger.kernel.org mailing list for more broad screening.

TPM and IMA have have their own maintainers and GIT trees:

• IMA: Mimi Zohar, git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git
• TPM: Jarkko Sakkinen, git://git.infradead.org/users/jjs/linux-tpmdd.git

TPM 2.0

The TPM 2.0 infrastructure in and around linux is currently moving fast. Here is a link list which tries to capture the current situation.

Books & Links

• A Practical Guide toTPM 2.0, free PDF, https://link.springer.com/book/10.1007/978-1-4302-6584-9
• TPM2.0 in Context, http://www.springer.com/de/book/9783319087436
• TCG Links https://trustedcomputinggroup.org/resources-using-trusted-platform-module-2-0-library-specification/
• Matthew Garrett's blog https://mjg59.dreamwidth.org/ (not only about tpm)
• James Bottomley's blog https://blog.hansenpartnership.com (not only about tpm)

Intel TSS Stack

The Intel TSS Stack, compliant with the TCG SAPI specifications consists of

• The Stack: https://github.com/01org/tpm2-tss
• The Tools: https://github.com/01org/tpm2-tools
• The Broker: https://github.com/01org/tpm2-abrmd (Access Broker & Resource Management Daemon)

Interesting Links can be found here:

• https://lenovopress.com/lp0599-technical-introduction-tpm-20-with-linux
• http://www.jwsecure.com/2017/02/07/implementing-platform-protection-for-linux/
• https://github.com/01org/tpm2-tools/wiki/How-to-use-tpm2-tools (needs to be updated)
• RSA signatures with TPM2.0 and OpenSSL https://dguerriblog.wordpress.com/
• https://archive.fosdem.org/2017/schedule/event/tpm2/attachments/slides/1517/export/events/attachments/tpm2/slides/1517/FOSDEM___TPM2_0_practical_usage.pdf
• https://elinux.org/images/6/6e/ELC2017_TPM2-and-TSS_Tricca.pdf

Interesting Projects using Intel TSS Stack

Automated Full Disk De/Encryption with Clevis/Tang+TPM+Luks

• http://redhat.slides.com/npmccallum/sad
• https://github.com/latchset/clevis/pull/17
• https://github.com/martinezjavier/clevis/blob/tpm2-pin/doc/clevis-bind-luks-tpm2.md

StrongSwan VPN Server + IMA + TPMSupport (Remote Attestation)

• https://wiki.strongswan.org/projects/strongswan/wiki/TPMPlugin

Others:

• Remote Attestation https://01.org/opencit
• https://github.com/irtimmer/tpm2-pk11
• https://github.com/rqou/tpm2-luks
• https://robertou.com/tpm2-sealed-luks-encryption-keys.html
• https://github.com/WindRiver-OpenSourceLabs/cryptfs-tpm2

IBM TSS Stack

The IBM Stack follows a more pragmatic approach - the code can be found at

• https://sourceforge.net/projects/ibmtpm20tss/

including tools and everything.

James Bottomley has been actively developing against it

• https://blog.hansenpartnership.com/using-your-tpm-as-a-secure-key-store/
• https://blog.hansenpartnership.com/tpm-enabling-gnome-keyring/
• https://blog.hansenpartnership.com/tpm2-and-linux/

It comes with its own

• TPM2.0 Simulator https://sourceforge.net/projects/ibmswtpm2/
• Attestation client/server http://ibmswtpm.sourceforge.net/ibmacs.html

IMA

See https://sourceforge.net/p/linux-ima/wiki/Home/ for details.

IMA namespacing: IMA Namespacing design considerations