1) Discuss the security of the following challenge-based scheme for mutual authentication, where Alice (A) and Bob (B) share a secret key K (information below raSMied as clear text) A-B: (A NA. B)/ NA is a nonce chosen by A BA: (8, Ng. K(NA), A) Ng is a nonce chosen by B A-B (A, KINB), B) 2) How would you improve the above schema?

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
Section: Chapter Questions
Problem 1PE
icon
Related questions
Question
1) Discuss the security of the following challenge-based scheme for mutual authentication, where Alice (A) and Bob (B) share a secret key K (information below is transmitted as
clear text)
A-- B: (A, NA. B)/ NA is a nonce chosen by A
B-A: (B, Ng. K(NA), A) I Ng is a nonce chosen by B
A-B: (A, K(NB). B)
2) How would you improve the above schema?
Transcribed Image Text:1) Discuss the security of the following challenge-based scheme for mutual authentication, where Alice (A) and Bob (B) share a secret key K (information below is transmitted as clear text) A-- B: (A, NA. B)/ NA is a nonce chosen by A B-A: (B, Ng. K(NA), A) I Ng is a nonce chosen by B A-B: (A, K(NB). B) 2) How would you improve the above schema?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Encryption and decryption
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education