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Computer Networks
Symmetric Key Cryptography
Q
Which of the following is incorrect about symmetric key cryptography?
AA. It uses common key for both encryption and decryption
BB. It is a secret key cryptography
CC. It uses single fixed length key for each algorithm
DD. Symmetric key can be combined with asymmetric key to achieve more security
Correct Answer:
C. C. It uses single fixed length key for each algorithm
Explanation:
An algorithm can make use of number of random keys and the keys can be any size. If the key length is increased, then it will become difficult to crack the key.
