Mod 2 Unit 1 Part 2

Front 1

A digital signature or digital signature scheme is a type of asymmetric cryptography. For messages sent through an insecure channel, a properly implemented digital signature gives the receiver reason to believe the message was sent by the claimed sender. While using a digital signature, the message digest is encrypted with which of the following keys?

Back 1

Senders private key

Front 2

Which option is correct about a hash algorithms ability to avoid the same output from two guessed inputs?

Back 2

Collison strength

Front 3

Which of the following provides the MOST secure form of encryption?

Back 3

AES

Front 4

Which item will effectively allow for fast, highly secure encryption of a USB flash drive?

Back 4

AES256

Front 5

Non-repudiation is enforced by which of the following?

Back 5

Digital signatures

Front 6

Which of the following refers to the ability to be reasonably certain that data is not modified or tampered with?

Back 6

integrity

Front 7

Which description is true about how to accomplish steganography in graphic files?

Back 7

Replacing the least significant bit of each byte.

Front 8

What may happen when hashing two different files creates the same result?

Back 8

Collosion

Front 9

Encryption is the conversion of data into a form, called a ciphertext that cannot be easily understood by unauthorized people. Which encryption is the strongest by use of mathematical evaluation techniques?

Back 9

AES

Front 10

Which of the following types of cryptography is typically used to provide an integrity check?

Back 10

Hash

Front 11

The Diffie-Hellman encryption algorithm relies on which of the following?

Back 11

Key Exchange

Front 12

Encryption is the conversion of data into a form, called a ciphertext that cannot be easily understood by unauthorized people. Which of the following is considered the weakest encryption?

Back 12

DES

Front 13

A security specialist has downloaded a free security software tool from a trusted industry site. The source has published the MD5 hash values for the executable program. The specialist performs a successful virus scan on the download but the MD5 hash is different. Which of the following steps should the specialist take?

Back 13

Avoid executing the file and contact the source website administrator.

Front 14

Which of the following would be needed to ensure that a user who has received an email cannot claim that the email was not received?

Back 14

Non-repudiation

Front 15

Which of the following types of encryption would be BEST to use for a large amount of data?

Back 15

symmetric

Front 16

Which of the following describes the validation of a message’s origin?

Back 16

Non-repudiation

Front 17

Identity the service provided by message authentication code (MAC) hash:

Back 17

Integrity

Front 18

What is steganography primarily used for?

Back 18

Hide information

Front 19

In cryptography, MD5 (Message-Digest algorithm 5) is a widely used cryptographic hash function with a 128-bit hash value. As an Internet standard (RFC 1321), MD5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of files. A user sees an MD5 hash number beside a file that they wish to download. Which description is true about a hash?

Back 19

A hash is a unique number that is generated based upon the files contents and should be verified after download.

Front 20

Most current encryption schemes are based on:

Back 20

algorithms.