Simplify the following text for a Grade 9 native English-speaking person.
Original: RC6 is a proprietary and patented algorithm ( by RSA Security and ) , and may require licensing and royalty payments for any products using the algorithm .
Simplified: The emphasis on the word `` if '' suggests that RSA Security Inc. may now require licensing and royalty payments for any products using the RC6 algorithm . RC6 is a patented encryption algorithm ( and ) .