Consider a simple authentication protocol below. A simple authentication protocol (1) C➜ AS: III || PI || III (2) AS C: TTTTTT (3) CV: III || TTTTTT TTTTTT= E(KI, [III || PI ||III]) where C = client, AS = authentication server, V = server, IDC - identifier of user on C, IDV = identifier of V, PC = password of user on C, KV = secret encryption key shared by AS and V 1. 11. What are the two main problems in this simple protocol? Suggest possible improvements to the protocol to address the problems.

Consider a simple authentication protocol below. A simple authentication protocol (1) C➜ AS: III || PI || III (2) AS C: TTTTTT (3) CV: III || TTTTTT TTTTTT= E(KI, [III || PI ||III]) where C = client, AS = authentication server, V = server, IDC - identifier of user on C, IDV = identifier of V, PC = password of user on C, KV = secret encryption key shared by AS and V 1. 11. What are the two main problems in this simple protocol? Suggest possible improvements to the protocol to address the problems.

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

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