Consider an input data of the form X= (Xo, X, X2,....., Xn1) where each X is...
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Consider an input data of the form X= (Xo, X₁, X2,....., Xn1) where each X₁ is a byte. A suggested hash function is h(X) = Xo+ X₁ + X₂+.....+ Xn1 where + stands for bitwise modulo two addition. Explain if h(X) is a secure hashing method. (6 marks) Demonstrate that the message authentication code, MAC defined by MACK(M) = h(KM) where K is the symmetric key used, M is the plain text message and usual concatenation operator, results in an insecure MAC.
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Is h X a secure hashing method No h X is not a secure hashing method This is because it is very easy ... View the full answer
Related Book For
Mathematical Statistics With Applications In R
ISBN: 9780124171138
2nd Edition
Authors: Chris P. Tsokos, K.M. Ramachandran
Posted Date:
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