SECURE COMMUNICATION MODULE 5

1. Which figure implements confidentiality and authentication?

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• 
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Another name for Message authentication codes is

• cryptographic codebreak

• cryptographic codesum

• cryptographic checksum

• cryptographic checkbreak

For a 150-bit message and a 10-bit MAC, how many values are the MAC value dependent on?

• 2¹⁴⁰

• 2¹⁵⁰

• 2¹⁵

• 2¹⁰

MAC is a

• one-to-one mapping

• many-to-one mapping

• onto mapping

• none of the mentioned

Confidentiality can only be provided if we perform message encryption before the MAC generation.

• true

• false

Which of the following is the meaning of crypt

• hidden writing

• secret writing

• copy

• none of the above

Which of the following are the applications of cryptography?

• digital signature

• authentication

• key generation

• all of the above

Which of the following principle of cryptography explains transmitted data in cannot be denied from being accepted the message received?

• Privacy

• reliability

• non-repudiation

• authentication

In how many ways does information in cryptography is encrypted?

• 2

• 3

• 4

• 5

Which of the following is /are offered by the Hash functions?

• Authentication

• Non repudiation

• Data Integrity

• All of the above