In asymmetric encryption _____________

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives. Cyber security has ________________interesting parallel to terrorism. _________________ are asymmetric. Ensuring security of data,information, and communication is considerably harder than hacking into a system. The attacker has an inherent ________________ in bothconventional terrorism and cyber attacks. In the case _________________ statesponsored attacks, the challenges are of a much________________ magnitude. ___________ are asymmetric.

A

Both

B

Two

C

Twice

D

Together

How many keys are required for encryption and decryption of data when we use asymmetric cipher?

A

0

B

1

C

2

D

3

Asymmetric encryption is also known as?

A

Private key cryptography

B

Public key cryptography

C

Public private key cryptography

D

Traditional cryptography

Which of the following is an example of asymmetric encryption technique?

A

one-time pad

B

one-time password

C

DSA

D

blowfish

Mona is confused about 'asymmetric encryption' Clarify her doubts by choosing the most appropriate statement:

A

A message encrypted with a public key can only be decrypted with a private key

B

A message encrypted with a private key can only be decrypted with a public key

C

A message encrypted with a symmetric key can only be decrypted with the same encrypting key

D

A message encrypted with a public key can only be decrypted with the corresponding private key

In RSA 1. p and q are chosen as very large prime number 2. Compute n = p * q and ϕ(n) = (p-1) * (q-1) Later e encryption key chosen. How this encryption key is selected?

A

e is chosen as a relative prime to ϕ(n)

B

e is chosen as a relative prime to q

C

e is chosen as a relative prime to n

D

e is chosen as a relative prime to p

An IP machine Q has a path to another IP machine H via three IP routers R1, R2, and R3. Q—R1—R2—R3—H H acts as an HTTP server, and Q connects to H via HTTP and downloads a file. Session layer Encryption is used, with DES as the shared key encryption protocol. Consider the following four Pieces of information: [I1] The URL of the file downloaded by Q [I2] The TCP port numbers at Q and H [I3] The IP addresses of Q and H [I4] The link layer addresses of Q and H Which of I1, I2, I3, and I4 can an intruder learn through sniffing at R2 alone?

A

Only I1 and I2

B

Only I1

C

Only I2 and I3

D

Only I3 and I4

Under DES, the data encryption standard took a 64-bit block of data and subjected it to ______ levels of encryption.

A

64

B

8

C

16

D

4

Private key algorithm is used for _____ encryption and public key algorithm is used for _____ encryption.

A

Messages, session key

B

Session key, messages

C

Can be used for both

D

None of the mentioned

Asymmetric kidney size is found in

A

Congenital abnormality

B

Polycystic kidney disease

C

Renal artery stenosis

D

Chronic glomerulonephritis

E

Chronic pyelonephritis

In asymmetric encryption _____________

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