Keystore 2.0: Implement shared secret negotiation.

Perform shared secret negotiation between all eligible participants.

Bug: 160623310
Test: N/A
Change-Id: I7c0ddb92a8f0ebf9fc37434f662ba21aea15fff2
diff --git a/keystore2/Android.bp b/keystore2/Android.bp
index 9875d64..c69774d 100644
--- a/keystore2/Android.bp
+++ b/keystore2/Android.bp
@@ -29,6 +29,7 @@
     rustlibs: [
         "android.hardware.security.keymint-V1-rust",
         "android.hardware.security.secureclock-V1-rust",
+        "android.hardware.security.sharedsecret-V1-rust",
         "android.os.permissions_aidl-rust",
         "android.security.apc-rust",
         "android.security.authorization-rust",