updated build system

support/include/utils/encryption.hpp

@@ -178,6 +178,18 @@ encrypt_data(const std::array<unsigned char,
                          reinterpret_cast<const unsigned char *>(buf.data()),
                          buf.size(), res);
 }
+
+#if defined(PROJECT_ENABLE_CURL)
+using reader_func_t =
+    std::function<bool(data_buffer &cypher_text, std::uint64_t start_offset,
+                       std::uint64_t end_offset)>;
+
+[[nodiscard]] auto
+read_encrypted_range(const http_range &range,
+                     const utils::encryption::hash_256_t &key,
+                     reader_func_t reader_func, std::uint64_t total_size,
+                     data_buffer &data) -> bool;
+#endif // defined(PROJECT_ENABLE_CURL)
 #endif // defined(PROJECT_ENABLE_BOOST)
 
 template <typename hash_t>