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

2 files changed, 10 insertions, 4 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigSharedStoreDataTest.java b/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigSharedStoreDataTest.java
index c76e2c878..7a815001c 100644
--- a/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigSharedStoreDataTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigSharedStoreDataTest.java
@@ -25,6 +25,7 @@ import androidx.test.filters.SmallTest;
 
 import com.android.internal.util.FastXmlSerializer;
 import com.android.server.wifi.WifiConfigStore;
+import com.android.server.wifi.util.WifiConfigStoreEncryptionUtil;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -62,7 +63,7 @@ public class PasspointConfigSharedStoreDataTest {
         final XmlSerializer out = new FastXmlSerializer();
         final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
         out.setOutput(outputStream, StandardCharsets.UTF_8.name());
-        mConfigStoreData.serializeData(out);
+        mConfigStoreData.serializeData(out, mock(WifiConfigStoreEncryptionUtil.class));
         out.flush();
         return outputStream.toByteArray();
     }
@@ -77,7 +78,9 @@ public class PasspointConfigSharedStoreDataTest {
         final XmlPullParser in = Xml.newPullParser();
         final ByteArrayInputStream inputStream = new ByteArrayInputStream(data);
         in.setInput(inputStream, StandardCharsets.UTF_8.name());
-        mConfigStoreData.deserializeData(in, in.getDepth());
+        mConfigStoreData.deserializeData(in, in.getDepth(),
+                WifiConfigStore.ENCRYPT_CREDENTIALS_CONFIG_STORE_DATA_VERSION,
+                mock(WifiConfigStoreEncryptionUtil.class));
     }
 
     /**
diff --git a/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigUserStoreDataTest.java b/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigUserStoreDataTest.java
index 82cdb5a90..5278e1933 100644
--- a/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigUserStoreDataTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/hotspot2/PasspointConfigUserStoreDataTest.java
@@ -32,6 +32,7 @@ import com.android.internal.util.FastXmlSerializer;
 import com.android.server.wifi.SIMAccessor;
 import com.android.server.wifi.WifiConfigStore;
 import com.android.server.wifi.WifiKeyStore;
+import com.android.server.wifi.util.WifiConfigStoreEncryptionUtil;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -213,7 +214,7 @@ public class PasspointConfigUserStoreDataTest {
         final XmlSerializer out = new FastXmlSerializer();
         final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
         out.setOutput(outputStream, StandardCharsets.UTF_8.name());
-        mConfigStoreData.serializeData(out);
+        mConfigStoreData.serializeData(out, mock(WifiConfigStoreEncryptionUtil.class));
         out.flush();
         return outputStream.toByteArray();
     }
@@ -228,7 +229,9 @@ public class PasspointConfigUserStoreDataTest {
         final XmlPullParser in = Xml.newPullParser();
         final ByteArrayInputStream inputStream = new ByteArrayInputStream(data);
         in.setInput(inputStream, StandardCharsets.UTF_8.name());
-        mConfigStoreData.deserializeData(in, in.getDepth());
+        mConfigStoreData.deserializeData(in, in.getDepth(),
+                WifiConfigStore.ENCRYPT_CREDENTIALS_CONFIG_STORE_DATA_VERSION,
+                mock(WifiConfigStoreEncryptionUtil.class));
     }
 
     /**