Question $26(2$ points$)$

$2$

$3$

Listen

AES and DES are an example of what type of cipher?

$8,9$

Stream ciphers that encrypt groups of plain$-$text symbols all together

Block ciphers that encrypt groups of plain$-$text symbols all together

Stream ciphers that encrypt one plain$-$text symbol at a time

$10$

$11,12$

Block ciphers that encrypt one plain$-$text symbol at a time