From d88bfdfe14eec1fad7ef599bd6b733f1079693e2 Mon Sep 17 00:00:00 2001
From: zhouzb <zhouzb@emqx.io>
Date: Thu, 25 Nov 2021 16:42:08 +0800
Subject: [PATCH] fix(authn): verify claims type is wrong

---
 apps/emqx_authn/src/simple_authn/emqx_authn_jwt.erl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/apps/emqx_authn/src/simple_authn/emqx_authn_jwt.erl b/apps/emqx_authn/src/simple_authn/emqx_authn_jwt.erl
index 7a24afccb..67893912c 100644
--- a/apps/emqx_authn/src/simple_authn/emqx_authn_jwt.erl
+++ b/apps/emqx_authn/src/simple_authn/emqx_authn_jwt.erl
@@ -125,7 +125,7 @@ verify_claims(default) -> #{};
 verify_claims(validator) -> [fun do_check_verify_claims/1];
 verify_claims(converter) ->
     fun(VerifyClaims) ->
-        maps:to_list(VerifyClaims)
+        [{to_binary(K), V} || {K, V} <- maps:to_list(VerifyClaims)]
     end;
 verify_claims(_) -> undefined.
 
@@ -349,3 +349,8 @@ validate_placeholder(<<"clientid">>) ->
     clientid;
 validate_placeholder(<<"username">>) ->
     username.
+
+to_binary(A) when is_atom(A) ->
+    atom_to_binary(A);
+to_binary(B) when is_binary(B) ->
+    B.