tree 9b8bfc3064ec9f64e81e7738b2dfb04183409ade
parent b06b4efe4b3d8618005d7e23598d5edc47e05b38
author Roshan Pius <rpius@google.com> 1571776965 -0700
committer Roshan Pius <rpius@google.com> 1573759080 -0800

WifiConfigStore: Encrypt credentials for networks (1/4)

Changes in the CL:
a) Introduced a new config store version.
The new version gets rid of the integrity computation & adds support for
encryption of credential data.
b) Changed DataIntegrityChecker to WifiConfigStoreEncryptionUtil to
help the different config store modules to encrypt/decrypt their
credential data to be stored.
c) Pass the version & the new EncryptionUtil to all the config store
modules. The version is needed for the modules to handle upgrades.
d) Use the WIFI_UID to store encryption key in keystore (to help ease
migrate keys if we move to a separate process in R)

Actual encryption of credential data/handling of upgrades will be
added in the next CL.

Bug: 140485110
Test: atest com.android.server.wifi
Change-Id: I522b11ef2ffbdbf0ff19ae4f2643023df3843e5e
Merged-In: I522b11ef2ffbdbf0ff19ae4f2643023df3843e5e