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Exam 16: Security

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Question 1

Multiple Choice

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In __________cryptography, the same key is used by the sender and the receiver.

A) symmetric-key
B) asymmetric-key
C) public-key
D) open-key

E) A) and B)
F) C) and D)

Correct Answer

verified

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Question 2

Multiple Choice

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Three security goals are _____.

A) confidentiality, cryptography, and nonrepudiation
B) confidentiality, encryption, and decryption
C) confidentiality, integrity, and availability
D) confidentiality, denial of service, and masquerading

E) A) and B)
F) A) and D)

Correct Answer

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C

Question 3

Multiple Choice

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In _________ cryptography, the same key is used in both directions.

In __________ cryptography, everyone has access to everyone's public key.

__________means that the sender and the receiver expect confidentiality.

Which of the following attacks is threatening availability?

_________ cryptography is often used for long messages.

In the asymmetric-key method used for confidentiality, which key(s) is (are) publicly known?

In ___________, the identity of a party is verified once for the entire duration of system access.

______________ can provide authentication, integrity, and nonrepudiation for a message.

_____________ means concealing the contents of a message by enciphering.

___________ cryptography is often used for short messages.

______________means concealing the message by covering it with something else.

In RSA, if user A wants to send an encrypted message to user B, the plaintext is encrypted with the public key of _______.

The RSA algorithm for confidentiality uses _______ cryptography.

___________ means that the data must arrive at the receiver exactly as they were sent.

Which of the following attacks is threatening integrity?