Bob wants to securely send a short message to Alice, he is only worried about confidentiality, he wants to make sure only Alice can ever read it, bu is not worried about a replay attack or the message being changed in transit. Alice has a public private key pair (22, 78). Bob has a public private key pair (18, 58) Bob and Alice are registered with a certificate authority keys-R-fun, who has the public-private key pair (25,37). Fill in the following protocol (only Bob's side of the protocol is shown): 1. Bob sends a message to keys-R-fun asking about Alice.
Bob wants to securely send a short message to Alice, he is only worried about confidentiality, he wants to make sure only Alice can ever read it, bu is not worried about a replay attack or the message being changed in transit. Alice has a public private key pair (22, 78). Bob has a public private key pair (18, 58) Bob and Alice are registered with a certificate authority keys-R-fun, who has the public-private key pair (25,37). Fill in the following protocol (only Bob's side of the protocol is shown): 1. Bob sends a message to keys-R-fun asking about Alice.
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
Related questions
Question
I just want to make sure my work is correct. Also, try to provide an explaination if possible.
Transcribed Image Text:To avoid this problem, Bob creates a new protocol. (the protocol is again shown from Bob's perspective)
Alice first generates a new public private key-pair (21,47) used only for this message
1.Steps 1 and 2 of the previous protocol are run
2. Alice sends over
21
3. Bob decrypts the key using 58
encrypted using
18
✓to Bob
and sends over the message encrypted using that newly decrypted key.
Transcribed Image Text:Question 1
Bob wants to securely send a short message to Alice, he is only worried about confidentiality, he wants to make sure only Alice can ever read it, but
is not worried about a replay attack or the message being changed in transit.
Alice has a public private key pair (22, 78).
Bob has a public private key pair (18, 58)
Bob and Alice are registered with a certificate authority keys-R-fun, who has the public-private key pair (25,37).
Fill in the following protocol (only Bob's side of the protocol is shown):
1. Bob sends a message to keys-R-fun asking about Alice.
2. keys-R-fun responds with 22
3. Bob sends the message to Alice, encrypted with
22
encrypted using 37
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
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.Recommended textbooks for you
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)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
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)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education