--- loncom/interface/lonexttool.pm	2021/08/07 01:32:12	1.22
+++ loncom/interface/lonexttool.pm	2022/03/29 20:12:46	1.23
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Launch External Tool Provider (LTI)
 #
-# $Id: lonexttool.pm,v 1.22 2021/08/07 01:32:12 raeburn Exp $
+# $Id: lonexttool.pm,v 1.23 2022/03/29 20:12:46 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -275,7 +275,7 @@ sub lti_params {
         $ltirole = 'Learner';
     }
     my @possdigest;
-    my $digest_user = &Encode::decode_utf8($uname.':'.$udom);
+    my $digest_user = &Encode::decode('UTF-8',$uname.':'.$udom);
     $digest_user = &Digest::SHA::sha1_hex($digest_user);
     push(@possdigest,$digest_user);
     if ($env{'course.'.$env{'request.course.id'}.'.languages'} ne '') {
@@ -298,7 +298,7 @@ sub lti_params {
     my ($title,$digest_symb);
     my ($symb) = &Apache::lonnet::whichuser();
     if ($symb) {
-        $digest_symb = &Encode::decode_utf8($symb);
+        $digest_symb = &Encode::decode('UTF-8',$symb);
         $digest_symb = &Digest::SHA::sha1_hex($digest_symb);
         push(@possdigest,$digest_symb);
         my $navmap = Apache::lonnavmaps::navmap->new();
@@ -427,7 +427,7 @@ sub lti_params {
         }
     }
     foreach my $key (keys(%ltiparams)) {
-        $ltiparams{$key} = &Encode::decode_utf8($ltiparams{$key});
+        $ltiparams{$key} = &Encode::decode('UTF-8',$ltiparams{$key});
     }
     $ltiparams{'basiclti_submit'} = $submittext;
     return %ltiparams;