6f Security to Protect Data Flashcards
Describe one advantage and one disadvantage of encrypting data. (4 marks)
prevents details from being understood by unauthorised
parties (1) by rendering the data unintelligible (1) Disadvantage
lost decryption key/wrong decryption key (1) means
unscrambling the data is not possible and makes it unusable
(1) [4]
State what is meant by authentication. (1 mark)
ensures who sent and who received the data (1)
ensures the person is who they say they are (during
transmission) (1)
two parties need to know what authentication is
being used in order to access/unscramble the data (1)
Explain one advantage and one disadvantage of the estate agency encrypting data. (4 marks)
advantage
prevents details from being understood by unauthorised parties (1)
because it renders the data unintelligible (1)
meets legal requirements (1) eg DPA and protecting personal
information (1)
disadvantage
lost decryption key / wrong decryption key (1) means unscrambling
the data is not possible and makes it unusable (1)
when sending to someone who is not technically minded (1) may not
be able to decrypt the data (1).