diff --git a/services/core/java/com/android/server/locksettings/recoverablekeystore/KeySyncTask.java b/services/core/java/com/android/server/locksettings/recoverablekeystore/KeySyncTask.java
index 567eaaa5d1596..1faa9f7b27e10 100644
--- a/services/core/java/com/android/server/locksettings/recoverablekeystore/KeySyncTask.java
+++ b/services/core/java/com/android/server/locksettings/recoverablekeystore/KeySyncTask.java
@@ -349,7 +349,6 @@ public class KeySyncTask implements Runnable {
                 .setSnapshotVersion(getSnapshotVersion(recoveryAgentUid, recreateCurrentVersion))
                 .setMaxAttempts(TRUSTED_HARDWARE_MAX_ATTEMPTS)
                 .setCounterId(counterId)
-                .setTrustedHardwarePublicKey(SecureBox.encodePublicKey(publicKey))
                 .setServerParams(vaultHandle)
                 .setKeyChainProtectionParams(metadataList)
                 .setWrappedApplicationKeys(createApplicationKeyEntries(encryptedApplicationKeys))
diff --git a/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotDeserializer.java b/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotDeserializer.java
index f789155cee525..b486834235dc8 100644
--- a/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotDeserializer.java
+++ b/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotDeserializer.java
@@ -132,8 +132,7 @@ public class KeyChainSnapshotDeserializer {
                     break;
 
                 case TAG_BACKEND_PUBLIC_KEY:
-                    builder.setTrustedHardwarePublicKey(
-                            readBlobTag(parser, TAG_BACKEND_PUBLIC_KEY));
+                    // Unused
                     break;
 
                 case TAG_KEY_CHAIN_PROTECTION_PARAMS_LIST:
diff --git a/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSchema.java b/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSchema.java
index ff30ecd7d3a73..0f2c2fc6c9590 100644
--- a/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSchema.java
+++ b/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSchema.java
@@ -35,7 +35,7 @@ class KeyChainSnapshotSchema {
     static final String TAG_RECOVERY_KEY_MATERIAL = "recoveryKeyMaterial";
     static final String TAG_SERVER_PARAMS = "serverParams";
     static final String TAG_TRUSTED_HARDWARE_CERT_PATH = "thmCertPath";
-    static final String TAG_BACKEND_PUBLIC_KEY = "backendPublicKey";
+    static final String TAG_BACKEND_PUBLIC_KEY = "backendPublicKey"; // Deprecated.
 
     static final String TAG_KEY_CHAIN_PROTECTION_PARAMS_LIST =
             "keyChainProtectionParamsList";
diff --git a/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializer.java b/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializer.java
index 17a16bf5906b2..235df698a674d 100644
--- a/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializer.java
+++ b/services/core/java/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializer.java
@@ -162,10 +162,6 @@ public class KeyChainSnapshotSerializer {
         writePropertyTag(xmlSerializer, TAG_SERVER_PARAMS, keyChainSnapshot.getServerParams());
         writePropertyTag(xmlSerializer, TAG_TRUSTED_HARDWARE_CERT_PATH,
                 keyChainSnapshot.getTrustedHardwareCertPath());
-        if (keyChainSnapshot.getTrustedHardwarePublicKey() != null) {
-            writePropertyTag(xmlSerializer, TAG_BACKEND_PUBLIC_KEY,
-                    keyChainSnapshot.getTrustedHardwarePublicKey());
-        }
     }
 
     private static void writePropertyTag(
diff --git a/services/tests/servicestests/src/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializerTest.java b/services/tests/servicestests/src/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializerTest.java
index 2f4da86bf38f5..07c6203718688 100644
--- a/services/tests/servicestests/src/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializerTest.java
+++ b/services/tests/servicestests/src/com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSerializerTest.java
@@ -45,7 +45,6 @@ public class KeyChainSnapshotSerializerTest {
     private static final int MAX_ATTEMPTS = 21;
     private static final byte[] SERVER_PARAMS = new byte[] { 8, 2, 4 };
     private static final byte[] KEY_BLOB = new byte[] { 124, 53, 53, 53 };
-    private static final byte[] PUBLIC_KEY_BLOB = new byte[] { 6, 6, 6, 6, 6, 6, 7 };
     private static final CertPath CERT_PATH = TestData.CERT_PATH_1;
     private static final int SECRET_TYPE = KeyChainProtectionParams.TYPE_LOCKSCREEN;
     private static final int LOCK_SCREEN_UI = KeyChainProtectionParams.UI_FORMAT_PASSWORD;
@@ -93,11 +92,6 @@ public class KeyChainSnapshotSerializerTest {
         assertThat(roundTrip().getTrustedHardwareCertPath()).isEqualTo(CERT_PATH);
     }
 
-    @Test
-    public void roundTrip_persistsBackendPublicKey() throws Exception {
-        assertThat(roundTrip().getTrustedHardwarePublicKey()).isEqualTo(PUBLIC_KEY_BLOB);
-    }
-
     @Test
     public void roundTrip_persistsParamsList() throws Exception {
         assertThat(roundTrip().getKeyChainProtectionParams()).hasSize(1);
@@ -201,7 +195,6 @@ public class KeyChainSnapshotSerializerTest {
                 .setKeyChainProtectionParams(createKeyChainProtectionParamsList())
                 .setWrappedApplicationKeys(createKeys())
                 .setTrustedHardwareCertPath(CERT_PATH)
-                .setTrustedHardwarePublicKey(PUBLIC_KEY_BLOB)
                 .build();
     }