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a . Determine the number of padding bits, total length and number of blocks used in HMAC for the hash functions SHA 5 1 2

a. Determine the number of padding bits, total length and number of blocks used in HMAC for the hash functions SHA 512 and MDS if the input message to be sent is M=1011011100011110 and the key K=10111011.(5 Marks)
b. Evaluate the value of Ch(c,f,g),Maj(a,b,c), of SHAS12 algorithm for the buffers 'a','b','c','e','f', and 'g' that contain the hexi-decimal values as follows: 1111777700001111, FFFF222222221111, BBBB999911112222, CCCC222222220000,1111DDDD22221111, and 33331111AAAAFFFF, respectively. (5 Marks)
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