Computer Science Engineering (CSE) Exam  >  Computer Science Engineering (CSE) Questions  >  A senderSsends a messagemto receiverR, which ... Start Learning for Free
A sender S sends a message m to receiver R, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.
(I) S can launch a birthday attack to replace m with a fraudulent message.
(II) A third party attacker can launch a birthday attack to replace m with a fraudulent message.
(III) R can launch a birthday attack to replace m with a fraudulent message.
  • a)
    (I) and (II) only
  • b)
    (I) only
  • c)
    (II) only
  • d)
    (II) and (III) only
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A senderSsends a messagemto receiverR, which is digitally signed by S ...
First let’s know what is Birthday attack :

Using Birthday Attack, some fraudulent message can be generated which has same hash value and digital signature as the original message.

But this question is more about Private Key. Let’s analyse each option one by one –

I. Instead of intended message, Sender can take some fraudulent message and encrypt it with own private key and then receiver’s public key. This is POSSIBLE.
II. Third party don’t have that Private Key to encrypt the message. So this is NOT possible.
III. And the same way R also don’t have that Private key to encrypt the message.

So, the only possibility is – (I) S can launch a birthday attack to replace m with a fraudulent message.
Option (B) is correct.
View all questions of this test
Most Upvoted Answer
A senderSsends a messagemto receiverR, which is digitally signed by S ...


Explanation:

Security Violations:

- (I) S can launch a birthday attack to replace m with a fraudulent message: Since S has signed the message with its private key, it is possible for S to replace the original message with a fraudulent one using a birthday attack. This violates the security of the communication.
- (II) A third party attacker can launch a birthday attack to replace m with a fraudulent message: A malicious third party can intercept the digitally signed message and replace it with a fraudulent one using a birthday attack, compromising the authenticity of the communication.
- (III) R can launch a birthday attack to replace m with a fraudulent message: It is not possible for R to launch a birthday attack to replace the message with a fraudulent one as R is the receiver of the message and does not have access to the private key of S.

Therefore, the correct answer is (I) only as both S and a third party attacker can potentially launch a birthday attack to replace the original message with a fraudulent one.
Free Test
Community Answer
A senderSsends a messagemto receiverR, which is digitally signed by S ...
B
Explore Courses for Computer Science Engineering (CSE) exam

Top Courses for Computer Science Engineering (CSE)

A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer?
Question Description
A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer?.
Solutions for A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE). Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.
Here you can find the meaning of A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A senderSsends a messagemto receiverR, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place.(I)S can launch a birthday attack to replace m with a fraudulent message.(II)A third party attacker can launch a birthday attack to replace m with a fraudulent message.(III)R can launch a birthday attack to replace m with a fraudulent message.a)(I) and (II) onlyb)(I) onlyc)(II) onlyd)(II) and (III) onlyCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
Explore Courses for Computer Science Engineering (CSE) exam

Top Courses for Computer Science Engineering (CSE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev