Don't clear kesytore after 5 auth failures.
Keystore's security originally derived from encrypting keys with a key
derived from the user's password. To avoid making keystore into a
password brute force oracle, keystore cleared itself after five
incorrect presentations. All of this has been superseded by moving
keystore's security into Keymaster, and by moving password security
into Gatekeeper/Weaver, and further by implmenting the synthetic
password model.
This CL removes the now-useless and occasionally-dangerous keystore
self-destruct.
Test: Manual
Change-Id: Id85c1c39769701bbc0dcfcb76511faf9eeb65496
2 files changed