WIP: Migrate Wiki content over to src/docs

docs/tpm_quick_ref.md

+# Introduction
+
+This page is meant to help keep track of [TPM](Glossary.md) use across the system.  It may not be up-to-date at any given point, but it's a wiki so you know what to do.
+
+# Details
+
+  * TPM ownership management:
+> > http://git.chromium.org/gitweb/?p=chromiumos/platform/cryptohome.git;a=blob;f=README.tpm
+
+  * TPM\_Clear is done (as in vboot\_reference) but in the firmware code itself on switch between dev and verified modes and in recovery.  (TODO: link code)
+
+  * TPM owner password clearing (triggered at sign-in by chrome):
+> > http://git.chromium.org/gitweb/?p=chromium/chromium.git;a=blob;f=chrome/browser/chromeos/login/login_utils.cc;h=9c4564e074c650bd91c27243c589d603740793bb;hb=HEAD#l861
+
+  * PCR extend (no active use elsewhere):
+> > http://git.chromium.org/gitweb/?p=chromiumos/platform/vboot_reference.git;a=blob;f=firmware/lib/tpm_bootmode.c
+
+  * NVRAM use for OS rollback attack protection:
+> > http://git.chromium.org/gitweb/?p=chromiumos/platform/vboot_reference.git;a=blob;f=firmware/lib/rollback_index.c
+
+  * Tamper evident storage:
+> > http://git.chromium.org/gitweb/?p=chromiumos/platform/cryptohome.git;a=blob;f=README.lockbox
+
+  * Tamper-evident storage for avoiding runtime device management mode changes:
+> > http://git.chromium.org/gitweb/?p=chromium/chromium.git;a=blob;f=chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen.cc
+
+  * User key/passphrase and cached data protection:
+> > http://git.chromium.org/gitweb/?p=chromiumos/platform/cryptohome.git;a=blob;f=README.homedirs
+
+  * A TPM in a Chrome device has an EK certificate that is signed by an intermediate certificate authority that is dedicated to the specific TPMs allocated for use in Chrome devices. OS-level self-validation of the platform TPM should be viable with this or chaining any other trust expectations.
+
+  * TPM is used for per-user certificate storage (NSS+PKCS#11) using opencryptoki but soon to be replaced by chaps. Update links here when chaps stabilizes (Each user's pkcs#11 key store is kept in their homedir to ensure it is tied to the local user account)  This functionality includes VPN and 802.1x-related keypairs.