add eddsa test

test/crypto.ml

@@ -1,5 +1,8 @@
+let encode = B32.encode
+let decode s = B32.decode s |> Result.get_ok
+
 let round_trip s =
-  let s' = s |> B32.encode |> B32.decode |> Result.get_ok in
+  let s' = s |> encode |> decode in
   match s' = s with
   | false -> Fmt.failwith "b32 round trip failure: @\nin :`%S`@\nout:`%S`" s' s
   | true -> ()
@@ -10,23 +13,63 @@ let () =
   let s_l = List.init 0x0f (fun i -> String.init i Char.chr) in
   List.iter round_trip s_l; ()
 
-(* TODO *)
 (* test vectors from:
    https://git.gnunet.org/gnunet/gnunet/file/src/cli/util/crypto-test-vectors.json.html *)
 
 let () =
+  (* hash *)
   let input = "91JPRV3F5GG4EKJNDSJQ8" in
   let expected =
     "D0R24RZ1TPASVQ2NY56CT8AJDYZE9ZGDB0GVZ05E9D4YGZQW2RC5YFPQ0Q86EPW836DY7VYQTNFFJT3ZR2K508F4JVS5JNJKYN2MMFR"
   in
   let output =
-    input
-    |> B32.decode
-    |> Result.get_ok
-    |> Hash.H64.hash
-    |> Hash.H64.to_octets
-    |> B32.encode
+    input |> decode |> Hash.H64.hash |> Hash.H64.to_octets |> encode
   in
   assert (output = expected);
 
   ()
+
+let () =
+  (* eddsa_key_derivation *)
+  let pub = "3M9KK1WSNM1RTY5P72HKFA264V4B7MVHVJ08Y90CV06DYHV8XPP0" in
+  let priv = "8QC2VNF8443S5KPNKMB4XMV58BTHWAKZ7SVW5WG3KRB37567XS90" in
+  let pub' =
+    let open Crypto in
+    priv
+    |> decode
+    |> EddsaPrivateKey.of_octets
+    |> Result.get_ok
+    |> EddsaPrivateKey.pub_of_priv
+    |> EddsaPublicKey.to_octets
+    |> encode
+  in
+  assert (pub = pub');
+
+  ()
+
+let () =
+  (* eddsa_signing *)
+  let priv = "5077XJR9AMH4T97ACKFBVBJD0KFENHPV66B2Y1JBSKXBJKNZJ4E0" in
+  let pub = "6E2F03JJ8AEDANTTZZ4SBZDFEEZSF8A9DVGTS6VFBCVZQYQ46RRG" in
+  let data = "00000300000000000000" in
+  let sig_ =
+    "XCNJGJ96WPDH60YVMH6C74NGQSGJE3BC1TYMGX6BHY5DMZZZKTB373QTXJ507K5EBSG9YS2EYKHCX3ATRQ6P5MY9MXC4ZB1XSZ2X23G"
+  in
+  let open Crypto in
+  let msg = decode data in
+  let eddsa_priv =
+    priv |> decode |> EddsaPrivateKey.of_octets |> Result.get_ok
+  in
+  let sig_' =
+    EddsaSignature.sign ~key:eddsa_priv msg
+    |> EddsaSignature.to_octets
+    |> encode
+  in
+  assert (sig_ = sig_');
+  let eddsa_pub = pub |> decode |> EddsaPublicKey.of_octets |> Result.get_ok in
+  let eddsa_sig = sig_ |> decode |> EddsaSignature.of_octets |> Result.get_ok in
+  let () =
+    EddsaSignature.verify ~key:eddsa_pub eddsa_sig ~msg |> Result.get_ok
+  in
+
+  ()