Commit graph

27 commits

Author SHA1 Message Date
Shawn Willden
e763ed2aa3 Explain the rationale for not using StrongBox in vold.
Bug: 77338527
Test:  Comment-only change.
Change-Id: I9f87e34854eabcc4c183553cf56a033970bb867e
2018-05-17 15:24:56 -06:00
Shawn Willden
2807536fc4 Do Keymaster HMAC key agreement in vold.
Bug: 79307225
Test: Boot
Change-Id: I6682e86076aa568907d94024ef175dbdede86557
2018-05-09 15:14:34 -06:00
Shawn Willden
c1903ad3d6 Disable use of StrongBox for encryption
Until VerificationTokens are wired up, StrongBox can't work.  Also,
this will reduce complications for early StrongBox testing.

Bug: 77338527
Test: Boot the device
Change-Id: I44a1577c388703aeecb2886e7db52084c17e2afd
2018-03-30 18:01:35 -07:00
Shawn Willden
353518194e Support Keymaster4
This CL changes vold from using a KM3 device directly to using the KM4
support wrapper from the KM4 support library, which supports both KM3
and KM4 devices (KM0, 1 and 2 devices are still supported as well,
because the default KM3 device is a wrapper that uses them).

In addition, I found myself getting confused about which "Keymaster"
types were locally-defined vold keymaster types and which were from
the KM4 HAL and support library, so I changd the approach to
referencing the latter, so all of them are qualified with the "km::"
namespace reference.

Test: Build & boot
Change-Id: I08ed5425641e7496f8597d5716cb3cd0cbd33a7f
2018-01-25 20:14:42 -07:00
Shawn Willden
785365b2f7 Clang-format Keymaster.{cpp|h} and KeyStorage.{cpp|h}
Test: Build & boot
Change-Id: I92bb107409f493770028cf6fd637d34af7644262
2018-01-25 20:09:46 -07:00
TreeHugger Robot
24224d10d0 Merge "Break vold dependency on keystore utilities." 2017-12-21 00:52:38 +00:00
Paul Crowley
2b1b72d183 Merge "Key upgrading for FDE."
am: 997e605563

Change-Id: If2ca4a6bd3b7a2b36b6c092975bcfdde8e063a3e
2017-11-27 20:59:33 +00:00
Paul Crowley
73473337d8 Key upgrading for FDE.
Correctly handle a key upgrade error from keymaster by upgrading the
FDE RSA key and writing the new key blob to disk.

Bug: 69792304
Test: Roll back PLATFORM_SECURITY_PATCH a month, wipe and reboot, roll
      forwards again, check logs with and without this patch.
Change-Id: I220d2dd4e3d791f636e9bc5f063064cecbf1b88a
2017-11-27 10:34:18 -08:00
Shawn Willden
f452774030 Break vold dependency on keystore utilities.
This is temporary.  Keystore is in the process of being upgraded to use
the new Keymaster 4.0 HAL, and I want to leave vold alone, using
Keymaster 3.0 for the moment.  This CL just copies relevant bits of
keystore support utilities into vold, so it can stop depending on the
copies from keystore.

After the keystore update is complete, vold will be changed either to
use Keymaster 4.0 or -- more likely -- to use keystore rather than
talking to Keymaster directly.  At that point the files added by this CL
will be deleted.

Test: Device boots and successfully decrypts /data
Change-Id: I73f6d4cc4c5e20d89d7ac37d29d025bf279f9e12
2017-11-09 16:05:38 -07:00
Pavel Grafov
e2e2d308df Zero memory used for encryuption keys.
std::vector with custom zeroing allocator is used instead of
std::string for data that can contain encryption keys.

Bug: 64201177
Test: manually created a managed profile, changed it's credentials
Test: manually upgraded a phone with profile from O to MR1.
Change-Id: Ic31877049f69eba9f8ea64fd99acaaca5a01d3dd
2017-08-10 17:31:03 +01:00
Shawn Willden
12e72ad921 Add digest support and implementation name to getHardwareFeatures.
Test: Manual
Change-Id: I910dea4fab671436fe5eb2ab35a6ffaa86179b35
2017-03-23 11:26:35 -06:00
Janis Danisevskis
e7152c38df Fix missing error handling in keymaster comatibility check
The compatibility check assumes that the keymaster session was created
successfully which is a faulty assumption.

This patch adds propper error handling to the check.

Bug: 35576166
Change-Id: I0c70a0e53f488f8bd3164898722f490cd0573ce3
2017-03-08 11:02:30 -08:00
TreeHugger Robot
64a11b177c Merge "Change to use new WaitForProperty API" 2017-02-25 08:17:59 +00:00
Wei Wang
4375f1be4c Change to use new WaitForProperty API
Change to use WaitForProperty API to wait for vold.post_fs_data_done
Also change cryptfs to C++

Bug: 35425974
Test: mma, marlin/angler boot

Change-Id: Id821f2035788fcc91909f296c83c871c67571de3
2017-02-24 17:47:53 -08:00
Chris Phoenix
9e8a577a63 keymaster HAL uses "default" service name
The getService() and registerAsService() methods of interface objects
now have default parameters of "default" for the service name. HALs
will not have to use any service name unless they want to register
more than one service.

Test: marlin boots

Bug: 33844934
Change-Id: I7c68c8b9ab0101b2f10ca20b9971a5bd34377168
2017-02-24 14:31:39 -08:00
Janis Danisevskis
015ec30b36 Port cryptfs to HILD keymaster HAL
Cryptfs uses keymaster for key derivation. Vold has a C++ abstraction
for Keymaster. However, cryptfs, being a pure C implementation, uses
its own abstraction of the keymaster HAL.

This patch expresses cryptfs' keymaster abstraction in terms of
vold's C++ Keymaster abstraction, consolidating the code base to a
single point where the actual keymaster HAL is beeing used.

Test: successfully upgrade bullhead/angler while using FDE and
      having a PIN set
      run vold_cryptfs_scrypt_hidlization_equivalence_test

Bug: 35028230
Bug: 32020919
Change-Id: Ic3b765720be0cf7899dda5005fa89347ffb59b9f
2017-02-14 11:18:51 +00:00
Alex Klyubin
cfc5202147 Revert "Port cryptfs to HILD keymaster HAL"
bullhead-userdebug with disk encryption enabled and with PIN prompt at
boot can no longer unlock/mount encrypted userdata partition at boot
after updating from bullhead-userdebug prior to the two commits being
reverted here.

    This reverts commit 6b7fa1bf17.
    This reverts commit bbe31ba776.

Test: Flash bullhead-userdebug build created prior to the above two
      commits, enable disk (set PIN to 1234) with PIN required at
      boot, reboot, confirm that PIN prompt accepts the PIN, confirm
      that device fully boots up and appears operational. Flash build
      with this commit without wiping userdata, confirm that PIN
      prompt at boot accepts the PIN and device fully boots up and
      appears operational.
Bug: 35028230

Change-Id: I1e9303e9d007c0c9a3021c874340156748dff5f5
2017-02-06 10:19:46 -08:00
Janis Danisevskis
6b7fa1bf17 Port cryptfs to HILD keymaster HAL
Cryptfs uses keymaster for key derivation. Vold has a C++ abstraction
for Keymaster. However, cryptfs, being a pure C implementation, uses
its own abstraction of the keymaster HAL.

This patch expresses cryptfs' keymaster abstraction in terms of
vold's C++ Keymaster abstraction, consolidating the code base to a
single point where the actual keymaster HAL is beeing used.

Test: marlin device boots with FBE enabled
Change-Id: Ia51fed5508e06fd6c436cca193791e57e0ab99ea
2017-02-03 07:00:47 +00:00
Janis Danisevskis
8e537b8002 Port to binder based keymaster hal
Bug: 32020919
Change-Id: If45ece76fdaf4d2c80eddc537e429633e4d42f9d
2017-01-17 11:23:40 +00:00
Paul Crowley
dff8c727c1 Support Keymaster 2 configuration and key upgrading
Bug: 27212248
Change-Id: I96bd9a442f4f535ba6ea44c9e81bcc1fee0ec471
2016-08-15 13:58:37 -07:00
Chih-Hung Hsieh
c81de6f84f Fix google-explicit-constructor warnings.
Bug: 28341362
Change-Id: I30adc5ba8e977aa6626d12f0981fa580d1425a4e
2016-04-29 14:42:01 -07:00
Paul Crowley
0323afd69d Support Keymaster2 with lots of clever template logic :)
Bug: 27718275
Change-Id: I0b2aa74f45fd07a121ce0c342b27426a3fe593ce
2016-03-17 10:56:24 -07:00
Paul Crowley
df528a7011 Run clang-format over ext4crypt related code
The formatting here is inconsistent with Android house style; use
clang-format to bring it back into line.

Change-Id: Id1fe6ff54e9b668ca88c3fc021ae0a5bdd1327eb
2016-03-09 09:34:13 -08:00
Paul Crowley
a051eb7a22 Use pointers not references for out arguments
Google/Android C++ style requires that arguments passed in for writing
should be pointers, not references, so that it's visible in the caller
that they'll be written to.

Bug: 27566014
Change-Id: I5cd55906cc4b2f61c8b97b223786be0b3ce28862
2016-03-09 09:32:02 -08:00
Paul Crowley
d9b9295b8c Fix memory leak in generate_key wrapper. Other fixes.
- catch errors in looking for the keyring
- static_assert to prevent a buffer overrun
- remove obsolete, misleading comment
- dial down priority of some log messages
- explain why we ignore some errors
- idiomatic C++11

Bug: 27552432
Change-Id: Ic3ee05b41eae45e7c6b571a459b326a483663526
2016-03-08 14:31:49 -08:00
Paul Crowley
13ffd8ef7a Improvements to the key storage module
The key storage module didn't comply with Android coding standards
and had room for improvemnet in a few other ways, so have cleaned up.

Change-Id: I260ccff316423169cf887e538113b5ea400892f2
2016-01-27 15:54:35 +00:00
Paul Crowley
1ef255816c Use a keymaster-based key storage module
Instead of writing raw keys, encrypt the keys with keymaster. This
paves the way to protecting them with auth tokens and passwords later.
In addition, fold in the hash of a 16k file into their encryption, to
ensure secure deletion works properly.

Now even C++ier!

Bug: 22502684
Bug: 22950892
Change-Id: If70f139e342373533c42d5a298444b8438428322
2016-01-26 18:24:03 +00:00