Include module info in dump output

Test: dumpsys android.security.maintenance
Change-Id: If30ef072294d0aa21ddcf0d79399c31fd87e44d2
diff --git a/keystore2/src/maintenance.rs b/keystore2/src/maintenance.rs
index 1a5045e..efac501 100644
--- a/keystore2/src/maintenance.rs
+++ b/keystore2/src/maintenance.rs
@@ -19,7 +19,7 @@
 use crate::error::map_km_error;
 use crate::error::Error;
 use crate::globals::get_keymint_device;
-use crate::globals::{DB, LEGACY_IMPORTER, SUPER_KEY, ENCODED_MODULE_INFO};
+use crate::globals::{DB, ENCODED_MODULE_INFO, LEGACY_IMPORTER, SUPER_KEY};
 use crate::ks_err;
 use crate::permission::{KeyPerm, KeystorePerm};
 use crate::super_key::SuperKeyManager;
@@ -326,6 +326,19 @@
         }
         writeln!(f)?;
 
+        // Display module attestation information
+        {
+            let info = ENCODED_MODULE_INFO.read().unwrap();
+            if let Some(info) = info.as_ref() {
+                writeln!(f, "Attested module information (DER-encoded):")?;
+                writeln!(f, "  {}", hex::encode(info))?;
+                writeln!(f)?;
+            } else {
+                writeln!(f, "Attested module information not set")?;
+                writeln!(f)?;
+            }
+        }
+
         // Display database size information.
         match crate::metrics_store::pull_storage_stats() {
             Ok(atoms) => {