Data Integrity and Security Quiz 5

What is the primary purpose of hashing in data integrity?

• To encrypt sensitive information

• To create a fixed-length representation of binary data

• To compress data for efficient storage

• To authenticate users during data transmission

How does salting enhance password hashing security?

• By encrypting the password

• By adding a random string to the password before hashing

• By using a longer hash function

• By incorporating a secret key in the hash function

What is the main purpose of HMAC (Hashed Message Authentication Code)?

• To prevent data corruption during transmission

• To ensure data confidentiality

• To authenticate the origin of data

• To create a digital fingerprint of data

Why is the use of HMAC considered more secure than simple hashing for authentication?

• It uses longer hash values

• It incorporates a secret key in the hash function

• It encrypts the entire message

• It adds random strings to the data before hashing

In the context of password cracking, what method involves comparing pre-computed hashes with stored password hashes?

• Dictionary attack

• Brute-force attack

• Reverse lookup tables

• Rainbow tables

What is the primary purpose of a digital signature?

• To compress digital documents

• To ensure data confidentiality

• To check the authenticity and integrity of a message

• To replace handwritten signatures in legal documents

What does non-repudiation mean in the context of digital signatures?

• Denying having received a message

• Denying the authenticity of a message

• Denying having sent a message

• Denying access to a message

How does a digital signature contribute to non-repudiation?

• By encrypting the entire document

• By creating a unique hash value

• By using asymmetric cryptography

• By encrypting the message digest with a private key

What is the basis for digital signatures, and what key generation method does DSA use?

• Symmetric cryptography; Large number factorization

• Asymmetric cryptography; Large number factorization

• Symmetric cryptography; Public key techniques

• Asymmetric cryptography; Public key techniques

Which digital signature algorithm is gradually replacing RSA and offers the advantage of smaller key sizes and less computation?

• Digital Signature Algorithm (DSA)

• Rivest-Shamir-Adleman (RSA)

• Elliptic Curve Digital Signature Algorithm (ECDSA)

• Hybrid Digital Signature Algorithm (HDSA)