diff --git a/omaha_utils.cc b/omaha_utils.cc
new file mode 100644
index 0000000..6bd7525
--- /dev/null
+++ b/omaha_utils.cc
@@ -0,0 +1,57 @@
+//
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "update_engine/omaha_utils.h"
+
+#include <base/logging.h>
+
+namespace chromeos_update_engine {
+
+namespace {
+
+// The possible string values for the end-of-life status.
+const char kEolStatusSupported[] = "supported";
+const char kEolStatusSecurityOnly[] = "security-only";
+const char kEolStatusEol[] = "eol";
+
+}  // namespace
+
+const char* EolStatusToString(EolStatus eol_status) {
+  switch (eol_status) {
+    case EolStatus::kSupported:
+      return kEolStatusSupported;
+    case EolStatus::kSecurityOnly:
+      return kEolStatusSecurityOnly;
+    case EolStatus::kEol:
+      return kEolStatusEol;
+  }
+  // Only reached if an invalid number is casted to |EolStatus|.
+  LOG(WARNING) << "Invalid EolStatus value: " << static_cast<int>(eol_status);
+  return kEolStatusSupported;
+}
+
+EolStatus StringToEolStatus(const std::string& eol_status) {
+  if (eol_status == kEolStatusSupported || eol_status.empty())
+    return EolStatus::kSupported;
+  if (eol_status == kEolStatusSecurityOnly)
+    return EolStatus::kSecurityOnly;
+  if (eol_status == kEolStatusEol)
+    return EolStatus::kEol;
+  LOG(WARNING) << "Invalid end-of-life attribute: " << eol_status;
+  return EolStatus::kSupported;
+}
+
+}  // namespace chromeos_update_engine