Question: 3 9 . Symmetric algorithms: a . Use private and public keys for encryption and decryption. b . Use key space as a function of

39. Symmetric algorithms:
a. Use private and public keys for encryption and decryption.
b. Use key space as a function of decryption.
c. Allow the decryption key to be derived from the encryption key.
d. Encrypt and decrypt using a restricted algorithm.
e. Underpin public key cryptography.

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