diff --git a/common/utils.h b/common/utils.h
index 0f8da22..874d0af 100644
--- a/common/utils.h
+++ b/common/utils.h
@@ -545,6 +545,17 @@
   return base::HexEncode(blob.data(), blob.size());
 }
 
+[[nodiscard]] std::string_view ToStringView(
+    const std::vector<unsigned char>& blob) noexcept;
+
+constexpr std::string_view ToStringView(
+    const std::vector<char>& blob) noexcept {
+  return std::string_view{blob.data(), blob.size()};
+}
+
+[[nodiscard]] std::string_view ToStringView(const void* data,
+                                            size_t size) noexcept;
+
 }  // namespace chromeos_update_engine
 
 #define TEST_AND_RETURN_FALSE_ERRNO(_x)                             \