Commit d979cc3

@@ -31,9 +31,10 @@ module Xml
         end
 
         def decrypt(cipher_text)
+          bytes = cipher_text.bytes
           result = default_decrypt(
-            cipher_text[0...cipher.iv_len],
-            cipher_text[cipher.iv_len..-1]
+            bytes[0...cipher.iv_len],
+            bytes[cipher.iv_len..-1]
           )
           return result if padding.nil?
 
@@ -51,8 +52,8 @@ module Xml
           cipher.decrypt
           cipher.padding = padding unless padding.nil?
           cipher.key = @key
-          cipher.iv = initialization_vector
-          cipher.update(data) << cipher.final
+          cipher.iv = initialization_vector.pack('c*')
+          cipher.update(data.pack('c*')) << cipher.final
         end
 
         private

@@ -30,7 +30,7 @@ RSpec.describe ::Xml::Kit::Crypto::SymmetricCipher do
         let(:secret) { SecureRandom.hex }
         let(:data) { "#{iv}#{secret}".strip }
 
-        context "when encoded as ASCII" do
+        context 'when encoded as ASCII' do
           before do
             IO.write(original_file, data, encoding: Encoding::ASCII_8BIT)
             execute_shell([
@@ -48,7 +48,7 @@ RSpec.describe ::Xml::Kit::Crypto::SymmetricCipher do
           end
         end
 
-        context "when encoded as UTF-8" do
+        context 'when encoded as UTF-8' do
           before do
             IO.write(original_file, data)
             execute_shell([