Move the passwd_hash/2 function to emqx-passwd project

src/emqx_auth_mod.erl

@@ -16,10 +16,6 @@
 
 -include("emqx.hrl").
 
--export([passwd_hash/2]).
-
--type(hash_type() :: plain | md5 | sha | sha256 | pbkdf2 | bcrypt).
-
 %%--------------------------------------------------------------------
 %% Authentication behavihour
 %%--------------------------------------------------------------------
@@ -46,33 +42,3 @@ behaviour_info(_Other) ->
 
 -endif.
 
-%% @doc Password Hash
--spec(passwd_hash(hash_type(), binary() | tuple()) -> binary()).
-passwd_hash(plain,  Password)  ->
-    Password;
-passwd_hash(md5,    Password)  ->
-    hexstring(crypto:hash(md5, Password));
-passwd_hash(sha,    Password)  ->
-    hexstring(crypto:hash(sha, Password));
-passwd_hash(sha256, Password)  ->
-    hexstring(crypto:hash(sha256, Password));
-passwd_hash(pbkdf2, {Salt, Password, Macfun, Iterations, Dklen}) ->
-    case pbkdf2:pbkdf2(Macfun, Password, Salt, Iterations, Dklen) of
-        {ok, Hexstring} -> pbkdf2:to_hex(Hexstring);
-        {error, Error} ->
-            emqx_logger:error("[AuthMod] PasswdHash with pbkdf2 error:~p", [Error]), <<>>
-    end;
-passwd_hash(bcrypt, {Salt, Password}) ->
-    case bcrypt:hashpw(Password, Salt) of
-        {ok, HashPassword} -> list_to_binary(HashPassword);
-        {error, Error}->
-            emqx_logger:error("[AuthMod] PasswdHash with bcrypt error:~p", [Error]), <<>>
-    end.
-
-hexstring(<<X:128/big-unsigned-integer>>) ->
-    iolist_to_binary(io_lib:format("~32.16.0b", [X]));
-hexstring(<<X:160/big-unsigned-integer>>) ->
-    iolist_to_binary(io_lib:format("~40.16.0b", [X]));
-hexstring(<<X:256/big-unsigned-integer>>) ->
-    iolist_to_binary(io_lib:format("~64.16.0b", [X])).
-