CNS-5-4-21

Symmetric key cryptography provides

• Data Availability

• Data Confidentiality

• Data Integrity

• All of these

The use of fingerprint ensures

• Availability

• Integrity

• Authenticity

• All of these

The use of a cryptographic hash function generates

• secret key

• message digest

• fingerprint

• All of these

The message and message digest pair is equivalent with

• document and fingerprint

• document and secret key

• document and public key

• All of these

The criteria of a cryptographic hash function are

• preimage resistance

• second preimage resistance,

• collision resistance

• All of these

Given the message digest h, In which of the following criteria the attacker determines the message M' that hashes to same digest

• Preimage resistance

• Second preimage resistance

• Collision resistance

• All of these

The message digest created by a cryptographic hash function is normally called

• modification detection code

• Message Authentication Code

• Message integrity

• None of these

Which of the followings uses a shared secret key

• modification detection code

• message authentication code

• message digest

• None of these

If the secret key is appended to the beginning of the message, then the MAC is known as

• postfix MAC

• prefix MAC

• Combined MAC

• Independent MAC

Message Authentication ensures

• data availability

• data integrity

• originality of sender

• All of these