4. Suppose the prime p = DepRob want to use the Diffie-Hellman key agreement protocol to 251 and base s = 53 are published. Alice olects a number at random: a = 63. Bob also selects a number at random: 6 = 55. What is the key that they agree on?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Show work question 4
UIIS Rey so easy? [Hint: Look at a table of
be a better choice of s ?
4. Suppose the prime p =
and Bob want
251 and base s
53 are published. Alice
to,,
use the Diffie-Hellman key agreement protocol to
selects a number at random: a =
random: 6 = 55. What is the key that they agree on?
63. Bob also selects a number at
5. Alice and Bob are using the Diffie-Hellman key agreement protocol to
agree on a key for a shift cipher. Suppose that the public prime and
base are p = 23 and s = 5, and that Bob's private key is b = 6. If he
receives the message
21, KLSQSOSCW,
how will he decipher the message?
in each case.
Transcribed Image Text:UIIS Rey so easy? [Hint: Look at a table of be a better choice of s ? 4. Suppose the prime p = and Bob want 251 and base s 53 are published. Alice to,, use the Diffie-Hellman key agreement protocol to selects a number at random: a = random: 6 = 55. What is the key that they agree on? 63. Bob also selects a number at 5. Alice and Bob are using the Diffie-Hellman key agreement protocol to agree on a key for a shift cipher. Suppose that the public prime and base are p = 23 and s = 5, and that Bob's private key is b = 6. If he receives the message 21, KLSQSOSCW, how will he decipher the message? in each case.
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