CSF Chap 5 Quiz

What is hashing used for in computer security?

• A. Encrypting data

• B. Ensuring data integrity

• C. Authenticating users

• D. Managing digital certificates

What does salting do in the context of hashing?

• A. Adds a random string of characters to the input before hashing

• B. Increases the length of the hash output

• C. Reverses the hash function

• D. Encrypts the hashed data

What is HMAC used for in strengthening hashing algorithms?

• A. Increasing hash output length

• B. Ensuring data confidentiality

• C. Adding authentication using a secret key

• D. Reversing the hash function

What is the basis for digital signatures?

• A. Symmetric cryptography

• B. Hashing algorithms

• C. Asymmetric cryptography

• D. Salting techniques

What is the purpose of a digital certificate?

• A. Authenticating and verifying the identity of users

• B. Encrypting messages

• C. Decrypting messages

• D. Generating random hash values

Which standard defines the structure of digital certificates and the public key infrastructure (PKI)?

• A. X.509

• B. SHA

• C. HMAC

• D. MD5

What is the primary function of a digital signature?

• A. Ensuring data confidentiality

• B. Authenticating and verifying the integrity of a message

• C. Reversing the hash function

• D. Increasing the length of the hash output

What does a cryptographic hash function guarantee?

• A. The input and output lengths are the same

• B. The hash function is reversible

• C. Two different inputs will always result in different hash values

• D. It can be easily decrypted using a secret key

How is a digital signature created?

• A. By encrypting the entire document with the signer's private key

• B. By creating a hash of the document and encrypting the hash with the signer's private key

• C. By encrypting the entire document with the signer's public key

• D. By creating a hash of the document and encrypting the document with the signer's public key

What is the purpose of encrypting the hash in a digital signature?

• A. To make the signature easier to decrypt

• B. To ensure the confidentiality of the document

• C. To verify the authenticity and integrity of the document

• D. To increase the size of the digital signature