tree 172767e7665f72f351a7e2562fe1364b26a0f33c
parent 177b9db8663d3af753ed6e18fb31b79caaa3462e
author Eric Biggers <ebiggers@google.com> 1619134618 -0700
committer Eric Biggers <ebiggers@google.com> 1619199881 -0700

Fix cryptfs RSA signing with keystore2

Fix KeymasterOperation::updateCompletely() to not treat an empty output
as an error, since for RSA signing (used by cryptfs / FDE) it is
expected that the output from update() be empty.  The output is instead
produced at the end by finish().

This is one of a set of changes that is needed to get FDE working again
so that devices that launched with FDE can be upgraded to Android 12.

Bug: 186165644
Change-Id: Icf120f8b9526d051d0ebe16bc8ad1edf712241e1