1 files changed, 18 insertions, 0 deletions
diff --git a/lib/asn1kit/types/null.rb b/lib/asn1kit/types/null.rb
new file mode 100644
index 0000000..db37744
--- /dev/null
+++ b/lib/asn1kit/types/null.rb
@@ -0,0 +1,18 @@
+# coding: ASCII-8BIT
+
+class ASN1Kit::Null < ASN1Kit::Type
+  asn1_tag :IMPLICIT, :UNIVERSAL, 5
+  asn1_alias "NULL"
+
+  def der_encoded_value
+    [:primitive, String.new]
+  end
+
+  def to_der
+    der_header(0)
+  end
+
+  def ==(other)
+    other.is_a?(ASN1Kit::Null)
+  end
+end