violet_prince Posted November 8, 2010 Posted November 8, 2010 Please help to advice which of the following protocols are insecure against replay attack, and explain why. (a) A ! B: username, password (B) A ! B: username, h(timestamp, password) © A ! B: username, timestamp, h(password) (d) A ! B: username, h(password), h(timestamp)
Cap'n Refsmmat Posted November 8, 2010 Posted November 8, 2010 Well, let's start by seeing what you think the answers are, or what you know about the subject. What progress have you made on the question?
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