Computer Science · Oct / Nov 2020 · Paper 13 · Question 6

Elsa writes a paragraph in an examination about encryption. There are several terms missing from the paragraph. Complete the paragraph using the list of given terms. Not all terms may need to be used. Some terms may be used more than once. • algorithm • alphanumeric • cookie • cypher • key • padlock • plain • word processed The data is encrypted using a . This is an that is used to scramble the data. The data before encryption is known as text. When the data has been encrypted it is known as text. To read the encrypted data it needs to be decrypted using a . [5]

Read automatically from the paper; the printed page above is exact.