lib/lockbox/encryptor.rb in lockbox-0.4.4 vs lib/lockbox/encryptor.rb in lockbox-0.4.5

@@ -11,19 +11,19 @@
         [Box.new(**options)] +
         Array(previous_versions).map { |v| Box.new(key: options[:key], **v) }
     end
 
     def encrypt(message, **options)
-      message = check_string(message, "message")
+      message = check_string(message)
       ciphertext = @boxes.first.encrypt(message, **options)
       ciphertext = Base64.strict_encode64(ciphertext) if @encode
       ciphertext
     end
 
     def decrypt(ciphertext, **options)
       ciphertext = Base64.decode64(ciphertext) if @encode
-      ciphertext = check_string(ciphertext, "ciphertext")
+      ciphertext = check_string(ciphertext)
 
       # ensure binary
       if ciphertext.encoding != Encoding::BINARY
         # dup to prevent mutation
         ciphertext = ciphertext.dup.force_encoding(Encoding::BINARY)
@@ -64,12 +64,13 @@
       message.force_encoding(Encoding::UTF_8)
     end
 
     private
 
-    def check_string(str, name)
+    def check_string(str)
       str = str.read if str.respond_to?(:read)
-      raise TypeError, "can't convert #{name} to string" unless str.respond_to?(:to_str)
+      # Ruby uses "no implicit conversion of Object into String"
+      raise TypeError, "can't convert #{str.class.name} to String" unless str.respond_to?(:to_str)
       str.to_str
     end
 
     def copy_metadata(source, target)
       target.original_filename =