tree e1c454c1f3388d7985cc4bd4eae389fa410a717d
parent 3d8f95a4382b980da3fc8d7c6bbe68ae53ec1cc0
author Shawn Willden <swillden@google.com> 1558634519 -0600
committer Shawn Willden <swillden@google.com> 1558712390 -0600

Fix encryption/decryption of large blocks.

There's a long-standing bug (since ~Marshmallow) that causes
AndroidKeyStore to truncate large (>64 KiB) blocks of data.  This can
be avoided by callers by processing data in smaller chunks, and
smaller chunks are more memory-efficient while not being much (if any)
more time-efficient.  But, Keystore should handle large blocks
correctly.  This CL adds a test to all block cipher tests that
attempts to encrypt and then decrypt a 100 KiB block.

Bug: 123391046
Test:  CtsKeystoreTestCases
Change-Id: I0c0286fd5360d4fe62cbd8130aa0c17f97318801