diff --git a/tools/releasetools/sign_target_files_apks.py b/tools/releasetools/sign_target_files_apks.py
index 7034a22..7b5f000 100755
--- a/tools/releasetools/sign_target_files_apks.py
+++ b/tools/releasetools/sign_target_files_apks.py
@@ -1097,13 +1097,16 @@
     # full names only.
     container_cert = matches.group("CONTAINER_CERT")
     container_private_key = matches.group("CONTAINER_PRIVATE_KEY")
-    if not CompareKeys(
+    if container_cert == 'PRESIGNED' and container_private_key == 'PRESIGNED':
+      container_key = 'PRESIGNED'
+    elif CompareKeys(
         container_cert, OPTIONS.public_key_suffix,
         container_private_key, OPTIONS.private_key_suffix):
+      container_key = container_cert[:-len(OPTIONS.public_key_suffix)]
+    else:
       raise ValueError("Failed to parse container keys: \n{}".format(line))
 
-    keys[name] = (payload_private_key,
-                  container_cert[:-len(OPTIONS.public_key_suffix)])
+    keys[name] = (payload_private_key, container_key)
 
   return keys
 
diff --git a/tools/releasetools/test_sign_target_files_apks.py b/tools/releasetools/test_sign_target_files_apks.py
index d745200..a7bf977 100644
--- a/tools/releasetools/test_sign_target_files_apks.py
+++ b/tools/releasetools/test_sign_target_files_apks.py
@@ -461,3 +461,26 @@
             'system/apex/apexd/apexd_testdata/com.android.apex.test_package_2.pem',
             'build/make/target/product/security/testkey'),
         }, keys_info)
+
+  def test_ReadApexKeysInfo_presignedKeys(self):
+    apex_keys = self.APEX_KEYS_TXT + (
+        'name="apex.apexd_test_different_app2.apex" '
+        'private_key="PRESIGNED" '
+        'public_key="PRESIGNED" '
+        'container_certificate="PRESIGNED" '
+        'container_private_key="PRESIGNED"')
+    target_files = common.MakeTempFile(suffix='.zip')
+    with zipfile.ZipFile(target_files, 'w') as target_files_zip:
+      target_files_zip.writestr('META/apexkeys.txt', apex_keys)
+
+    with zipfile.ZipFile(target_files) as target_files_zip:
+      keys_info = ReadApexKeysInfo(target_files_zip)
+
+    self.assertEqual({
+        'apex.apexd_test.apex': (
+            'system/apex/apexd/apexd_testdata/com.android.apex.test_package.pem',
+            'build/make/target/product/security/testkey'),
+        'apex.apexd_test_different_app.apex': (
+            'system/apex/apexd/apexd_testdata/com.android.apex.test_package_2.pem',
+            'build/make/target/product/security/testkey'),
+        }, keys_info)