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What is the value of opad in the HMAC structure?(a) 00111110(b) 00110010(c) 10110110(d) 01011100This question was addressed to me by my school teacher while I was bunking the class.My doubt stems from HMAC, DAA and CMAC topic in division Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

Answer»

Correct OPTION is (d) 01011100

To explain I would SAY: OPAD is 5C in hexadecimal.



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