Perform encryption and decryption using the same cipher

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Reference no: EM133369753

Question: For this question, you will perform encryption and decryption using the same cipher described above, but in CTR mode.

- Encrypt the message dea1 using the above block cipher in CTR mode, with a counter that starts from 0. (Don't use any IV.)

- Decrypt the ciphertext 5628 using the above block cipher in CTR mode, with a counter that starts from 0. (Don't use any IV.)

- Was this easier or more difficult than encrypting/decrypting in CBC mode? Do you suspect any difference in security? Why or why not?

Reference no: EM133369753

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