Switch to using PBKDF2 for the key generation for OBBs. Any previously
generated OBBs will stop being read correctly. A small pbkdf2gen program
is available to allow generation of appropriate keys with the salts.
Bug: 3059950
Change-Id: If4305c989fd692fd1150eb270dbf751e09c37295
If vold isn't told "none" for the key, it will try to mount it as an
encrypted container.
Also remove the -c option from mkobb since it can be triggered by
including a key as well.
Change-Id: I40a8ff3f778bfda682312630e6687ecc14b51844
Using a plaintext password doesn't work unless it's a certain length, so
just hash the plaintext password with MD5 to make it the right length
for the twofish encryption.
Tracking the IInterface doesn't make much sense since it's different
each time, so track the IBinder instead. That way we can unlinkToDeath
the binder when the last thing it's holding onto goes away.
Change-Id: Id828d25b4d74f27e9d8b4bfb3909c964469cc473
