diff --git a/classes/cve_info.rb b/classes/cve_info.rb
index ae3bb52..b49c441 100644
--- a/classes/cve_info.rb
+++ b/classes/cve_info.rb
@@ -1,2 +1,4 @@
 class CveInfo
-end
+    def initialize
+    end
+end
\ No newline at end of file
diff --git a/classes/nvd_downloader.rb b/classes/nvd_downloader.rb
new file mode 100644
index 0000000..b0c2151
--- /dev/null
+++ b/classes/nvd_downloader.rb
@@ -0,0 +1,30 @@
+require 'rest-client'
+
+class NvdDownloader
+    attr_accessor :base_url, :years
+
+    MIN_YEAR = '2002'
+    MAX_YEAR = '2019'
+    AVAILABLE_YEARS = (MIN_YEAR..MAX_YEAR).to_a
+
+    def initialize
+        @base_url = "https://nvd.nist.gov/feeds/json/cve/1.0/"
+        @years = self.years
+    end
+
+    def years
+        year = NvdDownloader::AVAILABLE_YEARS.map do |year|
+            [year.to_i, year]
+        end.to_h
+    end
+
+    def year(year)
+        years[year]
+    end
+
+
+    def get(url)
+
+    end
+
+end
\ No newline at end of file