diff --git a/src/types.ml b/src/types.ml
index e85ce833..347a0485 100644
--- a/src/types.ml
+++ b/src/types.ml
@@ -130,19 +130,17 @@ module Eddsa = struct
   let pub_to_string pub =
     pub |> Mirage_crypto_ec.Ed25519.pub_to_octets |> Base_32.encode
 
-  (*type priv = string*)
   (* EdDSA signatures are transmitted as 64-bytes base32
    binary-encoded objects with just the R and S values (base32_ binary-only). *)
   (*type signature = string*)
 end
 
 module Rsa = struct
+  (* TODO
+     GNUNET_CRYPTO custom encode/decode *)
   (* RSA public key converted to Crockford Base32. *)
   type pub = Mirage_crypto_pk.Rsa.pub
 
-  (* TODO
-     how to read/write pub rsa key
-     what format is used? *)
   let pub_of_string _s = assert false
   let pub_to_string _pub = assert false
 end