Simplify the following text for a Grade 9 native English-speaking person.
Original: This technique has been applied to SAFER , IDEA , Skipjack , E2 , Twofish , Camellia , CRYPTON , and even the stream cipher Salsa20 .
Simplified: It has been applied to SAFER , IDEA , Skipjack , E2 , Twofish , Camellia , CRYPTON , and the stream cipher Salsa20 as well .