Merge pull request 'Ditch enacl, support DH448 and Blake2s, and fix types (#14)' (#2) from hanssv-remove-enoise into master

Reviewed-on: #2

CHANGELOG.md

@@ -0,0 +1,54 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+### Added
+- Support for 448 DH function and Blake2s hash function.
+### Changed
+- Using `crypto` over `enacl` (and removing a call to `get_stacktrace/1`) makes `enoise`
+  up to date for (at least) OTP-27.
+- Added test dependency `eqwalizer_support` to enable checking types with Eqwalizer.
+### Removed
+- The dependency on `enacl` is not needed anymore, OTP's `crypto` library now cover all
+  necessary operations.
+
+## [1.2.0] - 2021-10-28
+### Added
+### Changed
+- Use the new AEAD crypto interface introduced in OTP 22. This makes `enoise` OPT 24 compatible
+  but it also means it no longer works on OTP 21 and earlier. You can't win them all.
+- Fixed ChaChaPoly20 rekey
+### Removed
+
+## [1.1.0] - 2020-09-24
+### Added
+Include [Cacaphony](https://github.com/centromere/cacophony) test vectors.
+### Changed
+Updated `enacl` to version [1.1.1](https://github.com/jlouis/enacl/releases/tag/v1.1.1).
+Fixed some imprecise type specifications.
+### Removed
+
+## [1.0.1] - 2018-12-21
+### Added
+### Changed
+Improved argument checks and error handling in handshake (in particular related to empty
+hand shake messages).
+### Removed
+
+## [1.0] - 2018-10-09
+Initial version the following map describe what is supported:
+```
+#{ hs_pattern => [nn, kn, nk, kk, nx, kx, xn, in, xk, ik, xx, ix]
+ , hash       => [blake2b, sha256, sha512]
+ , cipher     => ['ChaChaPoly', 'AESGCM']
+ , dh         => [dh25519] }
+```
+
+[Unreleased]: https://github.com/aeternity/aesophia_cli/compare/v1.2.0...HEAD
+[1.2.0]: https://github.com/aeternity/aesophia_cli/compare/v1.1.0...v1.2.0
+[1.1.0]: https://github.com/aeternity/aesophia_cli/compare/v1.0.1...v1.1.0
+[1.0.1]: https://github.com/aeternity/aesophia_cli/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/aeternity/enoise/releases/tag/v1.0.0

README.md

@@ -39,3 +39,9 @@ Test
 ----
 
     $ rebar3 eunit
+
+Typecheck
+---------
+
+    $ rebar3 dialyzer
+    $ elp --eqwalize-all --rebar

rebar.config

@@ -1,11 +1,14 @@
 {erl_opts, [debug_info]}.
 {plugins, [rebar3_hex]}.
-{deps, [{enacl, "0.17.2"}]}.
 
-{profiles, [{test, [{deps, [{jsx, {git, "https://github.com/talentdeficit/jsx.git", {tag, "2.8.0"}}}]}]}
+{profiles, [{test, [{deps, [ {jsx, {git, "https://github.com/talentdeficit/jsx.git", {tag, "2.8.0"}}}
+                           , {eqwalizer_support, {git_subdir, "https://github.com/whatsapp/eqwalizer.git", {branch, "main"}, "eqwalizer_support"}}
+                           ]}
+                   ]}
            ]}.
 
 {xref_checks, [undefined_function_calls, undefined_functions,
                locals_not_used,
                deprecated_function_calls, deprecated_functions]}.
 
+{dialyzer, [{warnings, [unknown]}]}.

rebar.lock

@@ -1,6 +1 @@
-{"1.1.0",
-[{<<"enacl">>,{pkg,<<"enacl">>,<<"0.17.2">>},0}]}.
-[
-{pkg_hash,[
- {<<"enacl">>, <<"4AD59142943E72D72C56E33C30DEDEF28ADD8EBEE79C51033562B0CB4B93EDE0">>}]}
-].
+[].

src/enoise.app.src

@@ -1,11 +1,11 @@
 {application, enoise,
  [{description, "An Erlang implementation of the Noise protocol"},
-  {vsn, "1.0.1"},
+  {vsn, "1.2.0"},
   {registered, []},
   {applications,
    [kernel,
     stdlib,
-    enacl
+    crypto
    ]},
   {env,[]},
   {modules, []},

src/enoise.erl

@@ -64,11 +64,9 @@ binary().
                               send_msg := send_msg_fun(),
                               state    := term() }.
 %% Noise communication state - used to parameterize a handshake. Consists of a
-%% send function one receive function and an internal state.
+%% send function, one receive function, and an internal state.
 
--type noise_split_state() :: #{ rx := enoise_cipher_state:state(),
-                                tx := enoise_cipher_state:state(),
-                                hs_hash := binary() }.
+-type noise_split_state() :: enoise_hs_state:noise_split_state().
 %% Return value from the final `split' operation. Provides a CipherState for
 %% receiving and a CipherState transmission. Also includes the final handshake
 %% hash for channel binding.
@@ -89,8 +87,7 @@ binary().
                 Role :: enoise_hs_state:noise_role()) ->
         {ok, enoise_hs_state:state()} | {error, term()}.
 handshake(Options, Role) ->
-    HState = create_hstate(Options, Role),
-    {ok, HState}.
+    create_hstate(Options, Role).
 
 %% @doc Do a step (either `{send, Payload}', `{rcvd, EncryptedData}',
 %% or `done')
@@ -111,10 +108,13 @@ step_handshake(HState, Data) ->
                 ComState :: noise_com_state()) ->
         {ok, noise_split_state(), noise_com_state()} | {error, term()}.
 handshake(Options, Role, ComState) ->
-    HState = create_hstate(Options, Role),
+    case create_hstate(Options, Role) of
+        {ok, HState} ->
             Timeout = proplists:get_value(timeout, Options, infinity),
-    do_handshake(HState, ComState, Timeout).
-
+            do_handshake(HState, ComState, Timeout);
+        Err = {error, _} ->
+            Err
+    end.
 
 %% @doc Upgrades a gen_tcp, or equivalent, connected socket to a Noise socket,
 %% that is, performs the client-side noise handshake.
@@ -140,7 +140,7 @@ connect(TcpSock, Options) ->
 %% @end
 -spec accept(TcpSock :: gen_tcp:socket(),
              Options :: noise_options()) ->
-                    {ok, noise_socket()} | {error, term()}.
+                    {ok, noise_socket(), enoise_hs_state:state()} | {error, term()}.
 accept(TcpSock, Options) ->
     tcp_handshake(TcpSock, responder, Options).
 
@@ -272,15 +272,16 @@ create_hstate(Options, Role) ->
                 enoise_protocol:from_name(X);
             _ -> NoiseProtocol0
         end,
-
+    DH = enoise_protocol:dh(NoiseProtocol),
     S  = proplists:get_value(s, Options, undefined),
     E  = proplists:get_value(e, Options, undefined),
-    RS = proplists:get_value(rs, Options, undefined),
-    RE = proplists:get_value(re, Options, undefined),
+    RS = remote_keypair(DH, proplists:get_value(rs, Options, undefined)),
+    RE = remote_keypair(DH, proplists:get_value(re, Options, undefined)),
 
     enoise_hs_state:init(NoiseProtocol, Role,
                          Prologue, {S, E, RS, RE}).
 
+
 check_gen_tcp(TcpSock) ->
     case inet:getopts(TcpSock, [mode, packet, active, header, packet_size]) of
         {ok, TcpOpts} ->
@@ -323,3 +324,5 @@ gen_tcp_rcv_msg({TcpSock, Active, Buf}, Timeout) ->
         {error, timeout}
     end.
 
+remote_keypair(_DH, undefined) -> undefined;
+remote_keypair(DH, RemotePub) when is_binary(RemotePub) -> enoise_keypair:new(DH, RemotePub).

src/enoise_cipher_state.erl

@@ -50,11 +50,12 @@ set_nonce(CState = #noise_cs{}, Nonce) ->
     CState#noise_cs{ n = Nonce }.
 
 -spec encrypt_with_ad(CState :: state(), AD :: binary(), PlainText :: binary()) ->
-                {ok, state(), binary()}.
+                {ok, state(), binary()} | {error, term()}.
 encrypt_with_ad(CState = #noise_cs{ k = empty }, _AD, PlainText) ->
     {ok, CState, PlainText};
 encrypt_with_ad(CState = #noise_cs{ k = K, n = N, cipher = Cipher }, AD, PlainText) ->
-    {ok, CState#noise_cs{ n = N+1 }, enoise_crypto:encrypt(Cipher, K, N, AD, PlainText)}.
+    CipherText = enoise_crypto:encrypt(Cipher, K, N, AD, PlainText),
+    {ok, CState#noise_cs{ n = N+1 }, CipherText}.
 
 -spec decrypt_with_ad(CState :: state(), AD :: binary(), CipherText :: binary()) ->
                 {ok, state(), binary()} | {error, term()}.
@@ -69,6 +70,8 @@ decrypt_with_ad(CState = #noise_cs{ k = K, n = N, cipher = Cipher }, AD, CipherT
     end.
 
 -spec rekey(CState :: state()) -> state().
+rekey(CState = #noise_cs{ k = empty }) ->
+    CState;
 rekey(CState = #noise_cs{ k = K, cipher = Cipher }) ->
     CState#noise_cs{ k = enoise_crypto:rekey(Cipher, K) }.
 

src/enoise_connection.erl

@@ -53,15 +53,19 @@ start_link(TcpSock, Rx, Tx, Owner, {Active0, Buf}) ->
             Err
     end.
 
+-spec send(Noise :: pid(), Data :: binary()) -> ok | {error, term()}.
 send(Noise, Data) ->
     gen_server:call(Noise, {send, Data}).
 
+-spec set_active(Noise :: pid(), Active :: true | once) -> ok | {error, term()}.
 set_active(Noise, Active) ->
     gen_server:call(Noise, {active, self(), Active}).
 
+-spec close(Noise :: pid()) -> ok | {error, term()}.
 close(Noise) ->
     gen_server:call(Noise, close).
 
+-spec controlling_process(Noise :: pid(), NewPid :: pid()) -> ok | {error, term()}.
 controlling_process(Noise, NewPid) ->
     gen_server:call(Noise, {controlling_process, self(), NewPid}, 100).
 

src/enoise_crypto.erl

@@ -30,12 +30,17 @@
 %% and the public key from `Key2' with algorithm `Algo'.
 -spec dh(Algo :: enoise_hs_state:noise_dh(),
          Key1:: keypair(), Key2 :: keypair()) -> binary().
-dh(dh25519, Key1, Key2) ->
-    enacl:curve25519_scalarmult( enoise_keypair:seckey(Key1)
-                               , enoise_keypair:pubkey(Key2));
+dh(Type, Key1, Key2) when Type == dh25519; Type == dh448 ->
+    dh_(ecdh_type(Type), enoise_keypair:pubkey(Key2), enoise_keypair:seckey(Key1));
 dh(Type, _Key1, _Key2) ->
     error({unsupported_diffie_hellman, Type}).
 
+ecdh_type(dh25519) -> x25519;
+ecdh_type(dh448)   -> x448.
+
+dh_(DHType, OtherPub, MyPriv) ->
+    crypto:compute_key(ecdh, OtherPub, MyPriv, DHType).
+
 -spec hmac(Hash :: enoise_sym_state:noise_hash(),
            Key :: binary(), Data :: binary()) -> binary().
 hmac(Hash, Key, Data) ->
@@ -54,38 +59,42 @@ hkdf(Hash, Key, Data) ->
     Output3 = hmac(Hash, TempKey, <<Output2/binary, 3:8>>),
     [Output1, Output2, Output3].
 
--spec rekey(Cipher :: enoise_cipher_state:noise_cipher(),
-            Key :: binary()) -> binary().
+-spec rekey(Cipher :: enoise_cipher_state:noise_cipher(), Key :: binary()) -> binary().
+rekey('ChaChaPoly', K0) ->
+    KLen = 32,
+    <<K:KLen/binary, _/binary>> = encrypt('ChaChaPoly', K0, ?MAX_NONCE, <<>>, <<0:(32*8)>>),
+    K;
 rekey(Cipher, K) ->
     encrypt(Cipher, K, ?MAX_NONCE, <<>>, <<0:(32*8)>>).
 
--spec encrypt(Cipher :: enoise_cipher_state:noise_cipher(),
-              Key :: binary(), Nonce :: non_neg_integer(),
-              Ad :: binary(), PlainText :: binary()) ->
-                binary() | {error, term()}.
-encrypt('ChaChaPoly', K, N, Ad, PlainText) ->
-    enacl:aead_chacha20poly1305_encrypt(K, N, Ad, PlainText);
-encrypt('AESGCM', K, N, Ad, PlainText) ->
-    Nonce = <<0:32, N:64>>,
-    {CipherText, CipherTag} = crypto:block_encrypt(aes_gcm, K, Nonce, {Ad, PlainText}),
-    <<CipherText/binary, CipherTag/binary>>.
+-spec encrypt(Cipher :: enoise_cipher_state:noise_cipher(), Key :: binary(),
+              Nonce :: non_neg_integer(), Ad :: binary(), PlainText :: binary()) -> binary().
+encrypt(Cipher, K, N, Ad, PlainText) ->
+    {CText, CTag} = crypto:crypto_one_time_aead(cipher(Cipher), K, nonce(Cipher, N), PlainText, Ad, true),
+    <<CText/binary, CTag/binary>>.
 
--spec decrypt(Cipher ::enoise_cipher_state:noise_cipher(),
-              Key :: binary(), Nonce :: non_neg_integer(),
-              AD :: binary(), CipherText :: binary()) ->
-                binary() | {error, term()}.
-decrypt('ChaChaPoly', K, N, Ad, CipherText) ->
-    enacl:aead_chacha20poly1305_decrypt(K, N, Ad, CipherText);
-decrypt('AESGCM', K, N, Ad, CipherText0) ->
+-spec decrypt(Cipher ::enoise_cipher_state:noise_cipher(), Key :: binary(),
+              Nonce :: non_neg_integer(), AD :: binary(),
+              CipherText :: binary()) -> binary() | {error, term()}.
+decrypt(Cipher, K, N, Ad, CipherText0) ->
     CTLen = byte_size(CipherText0) - ?MAC_LEN,
-    <<CipherText:CTLen/binary, MAC:?MAC_LEN/binary>> = CipherText0,
-    Nonce = <<0:32, N:64>>,
-    crypto:block_decrypt(aes_gcm, K, Nonce, {Ad, CipherText, MAC}).
+    <<CText:CTLen/binary, MAC:?MAC_LEN/binary>> = CipherText0,
+    case crypto:crypto_one_time_aead(cipher(Cipher), K, nonce(Cipher, N), CText, Ad, MAC, false) of
+        error -> {error, decrypt_failed};
+        Data  -> Data
+    end.
 
+nonce('ChaChaPoly', N) -> <<0:32, N:64/little-unsigned-integer>>;
+nonce('AESGCM', N)     -> <<0:32, N:64/big-unsigned-integer>>.
+
+cipher('ChaChaPoly') -> chacha20_poly1305;
+cipher('AESGCM')     -> aes_256_gcm.
 
 -spec hash(Hash :: enoise_sym_state:noise_hash(), Data :: binary()) -> binary().
+hash(blake2s, Data) ->
+    crypto:hash(blake2s, Data);
 hash(blake2b, Data) ->
-    {ok, Hash} = enacl:generichash(64, Data), Hash;
+    crypto:hash(blake2b, Data);
 hash(sha256, Data) ->
     crypto:hash(sha256, Data);
 hash(sha512, Data) ->

src/enoise_hs_state.erl

@@ -21,6 +21,13 @@
 -type noise_dh()    :: dh25519 | dh448.
 -type noise_token() :: s | e | ee | ss | es | se.
 -type keypair()     :: enoise_keypair:keypair().
+-type noise_split_state() :: #{ rx := enoise_cipher_state:state(),
+                                tx := enoise_cipher_state:state(),
+                                hs_hash := binary(),
+                                final_state => state() }.
+
+-type optional_key() :: undefined | keypair().
+-type initial_keys() :: {optional_key(), optional_key(), optional_key(), optional_key()}.
 
 -record(noise_hs, { ss                :: enoise_sym_state:state()
                   , s                 :: keypair() | undefined
@@ -32,13 +39,10 @@
                   , msgs = []         :: [enoise_protocol:noise_msg()] }).
 
 -opaque state() :: #noise_hs{}.
--export_type([noise_dh/0, noise_role/0, noise_token/0, state/0]).
+-export_type([noise_dh/0, noise_role/0, noise_split_state/0, noise_token/0, state/0]).
 
--spec init(Protocol :: string() | enoise_protocol:protocol(),
-           Role :: noise_role(), Prologue :: binary(),
-           Keys :: term()) -> state().
-init(ProtocolName, Role, Prologue, Keys) when is_list(ProtocolName) ->
-    init(enoise_protocol:from_name(ProtocolName), Role, Prologue, Keys);
+-spec init(Protocol :: enoise_protocol:protocol(), Role :: noise_role(),
+           Prologue :: binary(), Keys :: initial_keys()) -> {ok, state()} | {error, term()}.
 init(Protocol, Role, Prologue, {S, E, RS, RE}) ->
     SS0 = enoise_sym_state:init(Protocol),
     SS1 = enoise_sym_state:mix_hash(SS0, Prologue),
@@ -48,13 +52,21 @@ init(Protocol, Role, Prologue, {S, E, RS, RE}) ->
                   , dh = enoise_protocol:dh(Protocol)
                   , msgs = enoise_protocol:msgs(Role, Protocol) },
     PreMsgs = enoise_protocol:pre_msgs(Role, Protocol),
-    lists:foldl(fun({out, [s]}, HS0) -> mix_hash(HS0, enoise_keypair:pubkey(S));
-                   ({out, [e]}, HS0) -> mix_hash(HS0, enoise_keypair:pubkey(E));
-                   ({in, [s]}, HS0)  -> mix_hash(HS0, enoise_keypair:pubkey(RS));
-                   ({in, [e]}, HS0)  -> mix_hash(HS0, enoise_keypair:pubkey(RE))
-                end, HS, PreMsgs).
+    pre_mix(PreMsgs, HS).
 
--spec finalize(HS :: state()) -> {ok, map()} | {error, term()}.
+pre_mix([], HS) -> {ok, HS};
+pre_mix([{out, [s]} | Msgs], HS = #noise_hs{ s = S }) when S /= undefined ->
+    pre_mix(Msgs, mix_hash(HS, enoise_keypair:pubkey(S)));
+pre_mix([{out, [e]} | Msgs], HS = #noise_hs{ e = E }) when E /= undefined ->
+    pre_mix(Msgs, mix_hash(HS, enoise_keypair:pubkey(E)));
+pre_mix([{in, [s]} | Msgs], HS = #noise_hs{ rs = RS }) when RS /= undefined ->
+    pre_mix(Msgs, mix_hash(HS, enoise_keypair:pubkey(RS)));
+pre_mix([{in, [e]} | Msgs], HS = #noise_hs{ re = RE }) when RE /= undefined ->
+    pre_mix(Msgs, mix_hash(HS, enoise_keypair:pubkey(RE)));
+pre_mix(_Msg, _HS) ->
+    {error, invalid_noise_setup}.
+
+-spec finalize(HS :: state()) -> {ok, noise_split_state()} | {error, term()}.
 finalize(HS = #noise_hs{ msgs = [], ss = SS, role = Role }) ->
     {C1, C2} = enoise_sym_state:split(SS),
     HSHash   = enoise_sym_state:h(SS),
@@ -68,7 +80,7 @@ finalize(_) ->
 
 -spec next_message(HS :: state()) -> in | out | done.
 next_message(#noise_hs{ msgs = [{Dir, _} | _] }) -> Dir;
-next_message(_) -> done.
+next_message(#noise_hs{ }) -> done.
 
 -spec write_message(HS :: state(), PayLoad :: binary()) -> {ok, state(), binary()}.
 write_message(HS = #noise_hs{ msgs = [{out, Msg} | Msgs] }, PayLoad) ->
@@ -85,6 +97,7 @@ read_message(HS = #noise_hs{ msgs = [{in, Msg} | Msgs] }, Message) ->
         Err = {error, _} -> Err
     end.
 
+-spec remote_keys(HS :: state()) -> undefined | keypair().
 remote_keys(#noise_hs{ rs = RS }) ->
     RS.
 

src/enoise_keypair.erl

@@ -30,13 +30,15 @@
 %% @doc Generate a new keypair of type `Type'.
 -spec new(Type :: key_type()) -> keypair().
 new(Type) ->
-    {Sec, Pub} = new_key_pair(Type),
+    {Pub, Sec} = new_key_pair(Type),
     #kp{ type = Type, sec = Sec, pub = Pub }.
 
 %% @doc Create a new keypair of type `Type'. If `Public' is `undefined'
 %% it will be computed from the `Secret' (using the curve/algorithm
 %% indicated by `Type').
--spec new(Type :: key_type(), Secret :: binary(), Public :: binary() | undefined) -> keypair().
+-spec new(Type :: key_type(),
+          Secret :: binary() | undefined,
+          Public :: binary() | undefined) -> keypair().
 new(Type, Secret, undefined) ->
     new(Type, Secret, pubkey_from_secret(Type, Secret));
 new(Type, Secret, Public) ->
@@ -67,12 +69,14 @@ seckey(#kp{ sec = S }) ->
     S.
 
 %% -- Local functions --------------------------------------------------------
-new_key_pair(dh25519) ->
-    KeyPair = enacl:crypto_sign_ed25519_keypair(),
-    {enacl:crypto_sign_ed25519_secret_to_curve25519(maps:get(secret, KeyPair)),
-     enacl:crypto_sign_ed25519_public_to_curve25519(maps:get(public, KeyPair))};
+new_key_pair(Type) when Type == dh25519; Type == dh448 ->
+    crypto:generate_key(ecdh, ecdh_type(Type));
 new_key_pair(Type) ->
     error({unsupported_key_type, Type}).
 
-pubkey_from_secret(dh25519, Secret) ->
-    enacl:curve25519_scalarmult_base(Secret).
+pubkey_from_secret(Type, Secret) when Type == dh25519; Type == dh448 ->
+    {Public, Secret} = crypto:generate_key(ecdh, ecdh_type(Type), Secret),
+    Public.
+
+ecdh_type(dh25519) -> x25519;
+ecdh_type(dh448)   -> x448.

src/enoise_protocol.erl

@@ -19,7 +19,7 @@
         , to_name/1]).
 
 -ifdef(TEST).
--export([to_name/4]).
+-export([to_name/4, from_name_pattern/1, to_name_pattern/1]).
 -endif.
 
 -type noise_pattern() :: nn | kn | nk | kk | nx | kx | xn | in | xk | ik | xx | ix.
@@ -90,6 +90,7 @@ pre_msgs(Role, #noise_protocol{ hs_pattern = Pattern }) ->
     {PreMsgs, _Msgs} = protocol(Pattern),
     role_adapt(Role, PreMsgs).
 
+-spec role_adapt(Role :: enoise_hs_state:noise_role(), [noise_msg()]) -> [noise_msg()].
 role_adapt(initiator, Msgs) ->
     Msgs;
 role_adapt(responder, Msgs) ->
@@ -136,9 +137,9 @@ supported_dh(Dh) ->
 -spec supported() -> map().
 supported() ->
     #{ hs_pattern => [nn, kn, nk, kk, nx, kx, xn, in, xk, ik, xx, ix]
-    ,  hash       => [blake2b, sha256, sha512]
+    ,  hash       => [blake2s, blake2b, sha256, sha512]
     ,  cipher     => ['ChaChaPoly', 'AESGCM']
-    ,  dh         => [dh25519]
+    ,  dh         => [dh25519, dh448]
     }.
 
 to_name(Pattern, Dh, Cipher, Hash) ->
@@ -147,16 +148,16 @@ to_name(Pattern, Dh, Cipher, Hash) ->
 
 to_name_pattern(Atom) ->
     [Simple | Rest] = string:lexemes(atom_to_list(Atom), "_"),
-    string:uppercase(Simple) ++ lists:join("+", Rest).
+    lists:flatten(string:uppercase(Simple) ++ lists:join("+", Rest)).
 
 from_name_pattern(String) ->
     [Init | Mod2] = string:lexemes(String, "+"),
     {Simple, Mod1} = lists:splitwith(fun(C) -> C >= $A andalso C =< $Z end, Init),
-    list_to_atom(string:lowercase(Simple) ++
+    list_to_atom(lists:flatten(string:lowercase(Simple) ++
         case Mod1 of
             "" -> "";
-            _  -> "_" ++ lists:join([Mod1 | Mod2], "_")
-        end).
+            _  -> "_" ++ lists:join("_", [Mod1 | Mod2])
+        end)).
 
 to_name_dh(dh25519) -> "25519";
 to_name_dh(dh448)   -> "448".

test/enoise_chiper_state_tests.erl

@@ -26,5 +26,14 @@ chachapoly_test() ->
         enoise_cipher_state:decrypt_with_ad(CS1, AD, <<CipherText/binary, MAC/binary>>),
 
     ?assertMatch(PlainText, PlainText0),
+
+    % rekey test
+    CS4 = enoise_cipher_state:rekey(CS1),
+    {ok, _CS5, <<CipherText1:CTLen/binary, MAC1:MACLen/binary>>} =
+        enoise_cipher_state:encrypt_with_ad(CS4, AD, PlainText),
+    {ok, _CS6, <<PlainText1:PTLen/binary>>} =
+        enoise_cipher_state:decrypt_with_ad(CS4, AD, <<CipherText1/binary, MAC1/binary>>),
+    ?assertMatch(PlainText, PlainText1),
+
     ok.
 

test/enoise_crypto_tests.erl

@@ -44,6 +44,13 @@ chachapoly_test() ->
         enoise_crypto:decrypt('ChaChaPoly', Key, Nonce, AD, <<CipherText/binary, MAC/binary>>),
 
     ?assertMatch(PlainText, PlainText0),
+
+    Key1 = enoise_crypto:rekey('ChaChaPoly', Key),
+    <<CipherText1:CTLen/binary, MAC1:MACLen/binary>> =
+        enoise_crypto:encrypt('ChaChaPoly', Key1, Nonce, AD, PlainText),
+    <<PlainText1:PTLen/binary>> =
+        enoise_crypto:decrypt('ChaChaPoly', Key1, Nonce, AD, <<CipherText1/binary, MAC1/binary>>),
+    ?assertMatch(PlainText, PlainText1),
     ok.
 
 blake2b_test() ->

test/enoise_hs_state_tests.erl

@@ -12,12 +12,12 @@ noise_hs_test_() ->
         fun() -> test_utils:noise_test_vectors() end,
         fun(_X) -> ok end,
         fun(Tests) ->
-            [ {maps:get(name, T), fun() -> noise_hs_test(T) end}
+            [ {maps:get(protocol_name, T), fun() -> noise_hs_test(T) end}
               || T <- test_utils:noise_test_filter(Tests) ]
         end
     }.
 
-noise_hs_test(V = #{ name := Name }) ->
+noise_hs_test(V = #{ protocol_name := Name }) ->
     Protocol = enoise_protocol:from_name(Name),
 
     FixK = fun(undefined) -> undefined;
@@ -43,7 +43,8 @@ noise_test(_Name, Protocol, Init, Resp, Messages, HSHash) ->
     SecK = fun(undefined) -> undefined; (Sec) -> enoise_keypair:new(DH, Sec, undefined) end,
     PubK = fun(undefined) -> undefined; (Pub) -> enoise_keypair:new(DH, Pub) end,
     HSInit = fun(P, R, #{ e := E, s := S, rs := RS, prologue := PL }) ->
-                enoise_hs_state:init(P, R, PL, {SecK(S), SecK(E), PubK(RS), undefined})
+                 {ok, HS} = enoise_hs_state:init(P, R, PL, {SecK(S), SecK(E), PubK(RS), undefined}),
+                 HS
              end,
 
     InitHS = HSInit(Protocol, initiator, Init),

test/enoise_protocol_tests.erl

@@ -7,5 +7,18 @@
 -include_lib("eunit/include/eunit.hrl").
 
 name_test() ->
-    ?assertMatch(<<"Noise_XK_25519_ChaChaPoly_SHA512">>,
-                 enoise_protocol:to_name(enoise_protocol:from_name("Noise_XK_25519_ChaChaPoly_SHA512"))).
+    roundtrip("Noise_XK_25519_ChaChaPoly_SHA512"),
+    roundtrip("Noise_NN_25519_AESGCM_BLAKE2b").
+
+name2_test() ->
+    Name = "Noise_NXpsk2_25519_AESGCM_SHA512",
+    ?assertError({name_not_recognized, Name}, enoise_protocol:from_name(Name)).
+
+name_pattern_test() ->
+    Pat = "XKfallback+psk0",
+    RoundPat = enoise_protocol:to_name_pattern(enoise_protocol:from_name_pattern(Pat)),
+    ?assertEqual(Pat, RoundPat).
+
+roundtrip(Name) ->
+    ExpectedName = iolist_to_binary(Name),
+    ?assertMatch(ExpectedName, enoise_protocol:to_name(enoise_protocol:from_name(Name))).

test/enoise_tests.erl

@@ -12,12 +12,12 @@ noise_interactive_test_() ->
         fun() -> test_utils:noise_test_vectors() end,
         fun(_X) -> ok end,
         fun(Tests) ->
-            [ {maps:get(name, T), fun() -> noise_interactive(T) end}
+            [ {maps:get(protocol_name, T), fun() -> noise_interactive(T) end}
               || T <- test_utils:noise_test_filter(Tests) ]
         end
     }.
 
-noise_interactive(V = #{ name := Name }) ->
+noise_interactive(V = #{ protocol_name := Name }) ->
     Protocol = enoise_protocol:from_name(Name),
 
     FixK = fun(undefined) -> undefined;
@@ -41,10 +41,9 @@ noise_interactive(V = #{ name := Name }) ->
 noise_interactive(_Name, Protocol, Init, Resp, Messages, HSHash) ->
     DH = enoise_protocol:dh(Protocol),
     SecK = fun(undefined) -> undefined; (Sec) -> enoise_keypair:new(DH, Sec, undefined) end,
-    PubK = fun(undefined) -> undefined; (Pub) -> enoise_keypair:new(DH, Pub) end,
 
     HSInit = fun(#{ e := E, s := S, rs := RS, prologue := PL }, R) ->
-                Opts = [{noise, Protocol}, {s, SecK(S)}, {e, SecK(E)}, {rs, PubK(RS)}, {prologue, PL}],
+                Opts = [{noise, Protocol}, {s, SecK(S)}, {e, SecK(E)}, {rs, RS}, {prologue, PL}],
                 enoise:handshake(Opts, R)
              end,
     {ok, InitHS} = HSInit(Init, initiator),
@@ -149,12 +148,12 @@ noise_test_run_(Conf, SKP, CKP) ->
     Protocol = enoise_protocol:from_name(Conf),
     Port     = 4556,
 
-    SrvOpts = [{echos, 2}, {cpub, CKP}],
+    SrvOpts = [{echos, 2}, {cpub, enoise_keypair:pubkey(CKP)}],
     EchoSrv = enoise_utils:echo_srv_start(Port, Protocol, SKP, SrvOpts),
 
     {ok, TcpSock} = gen_tcp:connect("localhost", Port, [{active, once}, binary, {reuseaddr, true}], 100),
 
-    Opts = [{noise, Protocol}, {s, CKP}] ++ [{rs, SKP} || enoise_utils:need_rs(initiator, Conf) ],
+    Opts = [{noise, Protocol}, {s, CKP}] ++ [{rs, enoise_keypair:pubkey(SKP)} || enoise_utils:need_rs(initiator, Conf) ],
     {ok, EConn, _} = enoise:connect(TcpSock, Opts),
 
     ok = enoise:send(EConn, <<"Hello World!">>),

test/enoise_utils.erl

@@ -26,7 +26,7 @@ echo_srv(Port, Protocol, SKP, SrvOpts) ->
     AcceptRes =
         try
             enoise:accept(TcpSock, Opts)
-        catch _:R -> gen_tcp:close(TcpSock), {error, {R, erlang:get_stacktrace()}} end,
+        catch _:R:S -> gen_tcp:close(TcpSock), {error, {R, S}} end,
 
     gen_tcp:close(LSock),
 

test/test_utils.erl

@@ -114,9 +114,10 @@ parse_test_vectors(File) ->
 
 %% Only test supported configurations
 noise_test_filter(Tests0) ->
-    Tests1 = [ T || T = #{ name := Name } <- Tests0, supported(Name) ],
+    Tests1 = [ T || T = #{ protocol_name := Name } <- Tests0, supported(Name) ],
     case length(Tests1) < length(Tests0) of
-        true  -> ?debugFmt("WARNING: ~p test vectors are unsupported", [length(Tests0) - length(Tests1)]);
+        true  -> ?debugFmt("WARNING: ~p test vectors out of ~p are unsupported",
+                           [length(Tests0) - length(Tests1), length(Tests0)]);
         false -> ok
     end,
     Tests1.