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
The formatting here is inconsistent with Android house style; use
clang-format to bring it back into line.
Change-Id: Id1fe6ff54e9b668ca88c3fc021ae0a5bdd1327eb
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
Added a new call change_user_key which changes the way that disk
encryption keys are protected; a key can now be protected with a
combination of an auth token and a secret which is a hashed password.
Both of these are passed to unlock_user_key.
This change introduces a security bug, b/26948053, which must be fixed
before we ship.
Bug: 22950892
Change-Id: Iac1e45bb6f86f2af5c472c70a0fe3228b02115bf
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
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
Janis Danisevskis
Paul Crowley