Question: In Symmetric - key ciphers O a . Three keys are used for both encryption and decryption. b . Different keys are used for both

In Symmetric-key ciphers
O a. Three keys are used for both encryption and decryption.
b. Different keys are used for both encryption and decryption.
O c. The same key is used for both encryption and decryption.
O d. None of the mentioned

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