1 files changed, 8 insertions, 3 deletions
diff --git a/lib/crypto.js b/lib/crypto.js
index 22141ff8ae..d1c9eb5d2e 100644
--- a/lib/crypto.js
+++ b/lib/crypto.js
@@ -608,8 +608,13 @@ function filterDuplicates(names) {
   // for example, 'sha1' instead of 'SHA1'.
   var ctx = {};
   names.forEach(function(name) {
-    if (/^[0-9A-Z\-]+$/.test(name)) name = name.toLowerCase();
-    ctx[name] = true;
+    var key = name;
+    if (/^[0-9A-Z\-]+$/.test(key)) key = key.toLowerCase();
+    if (!ctx.hasOwnProperty(key) || ctx[key] < name)
+      ctx[key] = name;
   });
-  return Object.getOwnPropertyNames(ctx).sort();
+
+  return Object.getOwnPropertyNames(ctx).map(function(key) {
+    return ctx[key];
+  }).sort();
 }