diff --git a/nselib/asn1.lua b/nselib/asn1.lua
index 41122073b..f7d4123c0 100644
--- a/nselib/asn1.lua
+++ b/nselib/asn1.lua
@@ -237,30 +237,6 @@ ASN1Decoder = {
     return pos, oid
   end,
 
-  ---
-  -- Decodes length part of encoded value according to ASN.1 basic encoding
-  -- rules.
-  -- @param encStr Encoded string.
-  -- @param pos Current position in the string.
-  -- @return The position after decoding.
-  -- @return The length of the following value.
-  decodeLength = function(encStr, pos)
-    local elen
-    pos, elen = bin.unpack('C', encStr, pos)
-    if (elen > 128) then
-      elen = elen - 128
-      local elenCalc = 0
-      local elenNext
-      for i = 1, elen do
-        elenCalc = elenCalc * 256
-        pos, elenNext = bin.unpack("C", encStr, pos)
-        elenCalc = elenCalc + elenNext
-      end
-      elen = elenCalc
-    end
-    return pos, elen
-  end,
-
   ---
   -- Decodes an Integer according to ASN.1 basic encoding rules.
   -- @name ASN1Decoder.decodeInt