diff --git a/services/backup/src/Tools.h b/services/backup/src/Tools.h
--- a/services/backup/src/Tools.h
+++ b/services/backup/src/Tools.h
@@ -6,6 +6,12 @@
 namespace network {
 namespace tools {
 
+enum class BlobPutField {
+  HOLDER = 0,
+  HASH = 1,
+  DATA_CHUNK = 2,
+};
+
 std::string generateRandomString(std::size_t length = 20);
 
 std::string generateHolder(
@@ -15,6 +21,10 @@
 
 std::string validateAttachmentHolders(const std::string &holders);
 
+int charPtrToInt(const char *str);
+
+size_t getBlobPutField(BlobPutField field);
+
 } // namespace tools
 } // namespace network
 } // namespace comm
diff --git a/services/backup/src/Tools.cpp b/services/backup/src/Tools.cpp
--- a/services/backup/src/Tools.cpp
+++ b/services/backup/src/Tools.cpp
@@ -52,6 +52,20 @@
   return result;
 }
 
+int charPtrToInt(const char *str) {
+  unsigned int intValue;
+  std::stringstream strValue;
+
+  strValue << str;
+  strValue >> intValue;
+
+  return intValue;
+}
+
+size_t getBlobPutField(BlobPutField field) {
+  return static_cast<size_t>(field);
+}
+
 } // namespace tools
 } // namespace network
 } // namespace comm