For an n-bit tag and a k-bit key, the level of effort required for brute force attack on a MAC algorithm is(a) 2^k(b) 2^n(c) min(2^k,2^n)(d) 2^k/2^nThe question was asked in a national level competition.I'd like to ask this question from Message Authentication Codes (MACs) topic in section Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

For an n-bit tag and a k-bit key, the level of effort required for bru

1.	For an n-bit tag and a k-bit key, the level of effort required for brute force attack on a MAC algorithm is(a) 2^k(b) 2^n(c) min(2^k,2^n)(d) 2^k/2^nThe question was asked in a national level competition.I'd like to ask this question from Message Authentication Codes (MACs) topic in section Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security
Answer» Correct ANSWER is (C) min(2^k,2^n) For explanation: The LEVEL of effort REQUIRED for brute force attack on a MAC algorithm is min(2^k,2^n).

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