In order to prevent rainbow table attacks on decrypting the master key,
create a 16 byte "salt" by reading /dev/urandom. This is done right after
reading urandom to get the master key for the filesystem. The salt is
stored 32 bytes after the end of the key (a padding added to help prevent
accidental overwriting of the salt) and the salt is fixed at 16 bytes long.
This change will make existing encrypted filesystems unusable.
Change-Id: I420549d064c61d38aea78eef4d86c88acb265ca3
Update the enable inplace API to allow the UI to show a progress bar.
Add new command changepw (whichis currently not working)
Internal restructuring of code to support these two features.
Some minor cleanup of the code as well.
Change-Id: I11461fc9ce66965bea6cd0b6bb2ff48bcf607b97
In order to make the animations and the UI look right, we need to change
the cryptfs checkpw command to return a status if the password was
correct or not, and not have it automatically restart if it's correct.
There is a new command restart that will restart the framework with the
encrypted filesystem.
Change-Id: Ia8ae00d7ed8667699aa58d05ad8ba953cca9316e
There are still a few hacks and performance issues related
to shutting down the framework in this code, but it is
functional and tested. Without the UI changes, it requires
cryptic adb shell commands to enable, which I shall not
utter here.
Change-Id: I0b8f90afd707e17fbdb0373d156236946633cf8b
