Exam (elaborations)
Network Security & Cryptography Midterm Exam - Q&A
- Course
- Institution
Network Security & Cryptography Midterm Exam - Q&A
[Show more]
Seller
Follow
Studycafe
Reviews received
Content preview
Network Security & Cryptography Midterm Exam - Q&AWhich choice is NOT one of the three roles of Cryptography? ✔️Ans -
Cryptography is a security system to backup data
What popular programing function is used for Modulo 2? ✔️Ans - The
exclusive-or (XOR) you find in programming languages.
NOT All block cipher modes leak some information ✔️Ans - False
There are several sources of trust, which selection below is NOT. ✔️Ans -
What is 7 + 2 (Mod 7)? ✔️Ans - 2
Counter mode, generally known by the three-letter abbreviation CTR, is
another block cipher encryption mode as well as stream cipher mode.
✔️Ans - True
SET is a protocol for _____. ✔️Ans - Online Shopping
The simplest method to encrypt a longer plaintext is known as the ______ .
✔️Ans - ECB Electronic codebook mode
SHA-1 and SHA-2 are the secure hash algorithms required by law for use in
certain ____ ✔️Ans - US Government applications
MD5 has been utilized in a wide variety of cryptographic applications, and
is also commonly used to verify _____ ✔️Ans - Data integrity
Which choice is NOT one of the three functions the authors use when
generating RSA keys in regards to signatures? ✔️Ans - It uses bilinear
system threading
The best way to have confidence in building something secure is to keep it
simple. ✔️Ans - True
, Virtually all block ciphers consist of several repetitions of a weak block
cipher, known as a ____ ✔️Ans - Round
The process of encoding messages or information in such a way that only
authorized parties can read it is called ____________. ✔️Ans - Encryption
The primary use of padding with classical ciphers is to prevent _____
✔️Ans - The cryptanalyst from using that predictability to find
Cryptanalysis that aid in breaking the encryption
This attack occurs when the attacker records a message and then later
resends that same message ✔️Ans - Replay
A PKI (Public Key Infrastructure) is an arrangement that binds public keys
with respective user identities by means of a ____________. ✔️Ans -
Certificate Authority CA
The first algorithm we show is the initialization of the channel data. What
are the two main functions? ✔️Ans - Setting up the keys and the
message numbers
Message numbers are vital for various reasons, which choice below is
✔️Ans - They provide a source for IVs for the encryption algorithm
Which message authentication code (MAC) do the authors suggest to use?
✔️Ans - HMAC-SHA-256
This layer is the encoding layer where each data element of the message
has to be converted to a sequence of bytes. ✔️Ans - Message encoding
and parsing
What is 32 (Mod 5)? ✔️Ans - 2
What is one of the great advantages of RSA? ✔️Ans - It can be used for
both encrypting messages and signing messages
Complexity is the main enemy of security. Therefore, any security design
should strive for simplicity. ✔️Ans - True
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Studycafe. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now