Simplify the following text for a Grade 9 native English-speaking person.
Original: It was designed by Ron Rivest , Matt Robshaw , Ray Sidney , and Yiqun Lisa Yin to meet the requirements of the Advanced Encryption Standard ( AES ) competition . The algorithm was one of the five finalists , and was also submitted to the NESSIE and CRYPTREC projects .
Simplified: It was designed by Ron Rivest , Matt Robshaw , Ray Sidney , and Yiqun Lisa Yin , and was also submitted to the NESSIE and CRYPTREC projects .