diff --git a/src/repo/includes/Object.h b/src/repo/includes/Object.h
index 13b56e4..e18709c 100644
--- a/src/repo/includes/Object.h
+++ b/src/repo/includes/Object.h
@@ -31,6 +31,9 @@ public:
     /// All derived objects should implement this method
     virtual std::string getKey() const = 0;
 
+    /// Returns the keys of that this object refers to
+    virtual const std::vector<idType> &getRefs() const;
+
     const idType id;      ///< Unique numerical of the object
     const ObjectType type;///< Type of the object
 
diff --git a/src/repo/includes/objects/Archive.h b/src/repo/includes/objects/Archive.h
index 632691a..74bcd15 100644
--- a/src/repo/includes/objects/Archive.h
+++ b/src/repo/includes/objects/Archive.h
@@ -22,6 +22,9 @@ public:
     /// Returns the name of the archive
     std::string getKey() const override;
 
+    /// Returns the files in this archive
+    const std::vector<Object::idType> &getRefs() const override;
+
     const std::string name;         ///< Archive name
     const unsigned long long mtime; ///< Time of creation
     const std::vector<idType> files;///< List of ids of File objects in the Archive
diff --git a/src/repo/includes/objects/File.h b/src/repo/includes/objects/File.h
index 473fb39..74b8fa0 100644
--- a/src/repo/includes/objects/File.h
+++ b/src/repo/includes/objects/File.h
@@ -68,6 +68,12 @@ public:
     /// List of the chunks in file
     /// Normal file has normal chunks as its contents, for Directory it's empty, Symlink has a chunk with its target path
     const std::map<size_t, idType> chunks;
+
+    const std::vector<idType> &getRefs() const override;
+
+private:
+    void makeChunksList() const;
+    mutable std::optional<std::vector<idType>> chunksList{std::nullopt};
 };
 
 
diff --git a/src/repo/srcs/Object.cpp b/src/repo/srcs/Object.cpp
index 305cfc4..1b69264 100644
--- a/src/repo/srcs/Object.cpp
+++ b/src/repo/srcs/Object.cpp
@@ -17,3 +17,7 @@ void Object::serialize(std::vector<char> &out) const {
 }
 
 Object::~Object() = default;
+
+static std::vector<Object::idType> emptyRef{};
+
+const std::vector<Object::idType> &Object::getRefs() const { return emptyRef; }
diff --git a/src/repo/srcs/objects/Archive.cpp b/src/repo/srcs/objects/Archive.cpp
index 632783e..a4eb2fc 100644
--- a/src/repo/srcs/objects/Archive.cpp
+++ b/src/repo/srcs/objects/Archive.cpp
@@ -28,3 +28,5 @@ void Archive::serialize(std::vector<char> &out) const {
 }
 
 std::string Archive::getKey() const { return name; }
+
+const std::vector<Object::idType> &Archive::getRefs() const { return files; }
diff --git a/src/repo/srcs/objects/File.cpp b/src/repo/srcs/objects/File.cpp
index 9ddf7af..1080b06 100644
--- a/src/repo/srcs/objects/File.cpp
+++ b/src/repo/srcs/objects/File.cpp
@@ -83,3 +83,16 @@ unsigned long long File::getFileSize(const std::filesystem::path &p) {
     else
         return getFileContents(p).size();
 }
+
+void File::makeChunksList() const {
+    if (chunksList) return;
+    chunksList.emplace();
+
+    chunksList->reserve(chunks.size());
+    for (auto const &c: chunks) chunksList->emplace_back(c.second);
+}
+
+const std::vector<Object::idType> &File::getRefs() const {
+    if (!chunksList) makeChunksList();
+    return *chunksList;
+}