How should Eve alter that file so that she can read confidential messages sent between Alice and Bob, and forge messages from either?
How should Eve alter that file so that she can read confidential messages sent between Alice and Bob, and forge messages from either?
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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Question
Suppose Alice and Bob have RSA public keys in a file on a server. They communicate regularly using authenticated, confidential messages. Eve wants to read the messages but is unable to crack the RSA private keys of Alice and Bob. However, she is able to break into the server and alter the file containing Alice's and Bob's public keys.
- How should Eve alter that file so that she can read confidential messages sent between Alice and Bob, and forge messages from either?
- How might Alice and/or Bob detect Eve's subversion of the public keys?
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