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Which one of the following uses a 128bit round key to encrypt the data using XOR and use it in reverse to decrypt it?

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Which one of the following uses a 128bit round key to encrypt the data using XOR and use it in reverse to decrypt it?

(a) Round key algorithm

(b) Public key algorithm

(c) Advanced Encryption Standard

(d) Asymmetric key algorithm

The question was posed to me in an interview for job.

I want to ask this question from Encryption and Its Applications in portion Database Programming Techniques of Database Management

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Correct choice is (c) Advanced Encryption Standard

To explain: The standard is based on the Rijndael algorithm.

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