Test 5

Question 1

SHA

Test 5

Answer 1

SHA (Security Hash Algorithm) - Family of hash functions designed for security.

Question 2

SHA-3

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Answer 2

SHA-3 (Secure Hash Algorithm 3) - the latest hash standard offering the most secure hash functions.

Question 3

HMAC

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Answer 3

HMAC (Hash Based Message Authentication Code) - authenticates data by using a hash algorithm combined with a secret key.

Question 4

CRC

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Answer 4

CRC (Cyclic Redundancy Check) - an error-detecting hash function used to ensure data integrity

Question 5

Salting

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Answer 5

Salting - a technique used to secure passwords by adding random data to a password before it is hashed, reducing brute force, dictionary and rainbow attacks.

Question 6

Which of the following answers refer to algorithms used for generating and verifying digital signatures? (Select 3 answers)

Test 5

Answer 6

ECDSA
RSA
DSA

Question 7

DSA

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Answer 7

DSA (Digital Signature Algorithm) - a system designed for creating and verifying digital signatures but is not an encryption algorithm like RSA.

Question 8

RSA

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Answer 8

RSA (Rivest, Shamir, Adleman) - a system using public/private keys to encrypt data for secure communication.

Question 9

ECDSA

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Answer 9

ECDSA (Elliptic Curve Digital Signature Algorithm) - is a method using ECC, for creating digital signatures with shorter keys and faster processing times. Has no native encryption function.

Question 10

Key stretching

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Answer 10

Key stretching makes passwords more secure by applying resource-intensive algorithms making it less suseptible to brute force attacks

Question 11

PBKDF2

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Answer 11

PBKDF2 (Password Based, Key Derivation Function 2) - uses a key stretching algorithm to create a secure key from a password by taking a password, adding a random salt value and hash functions.

Question 12

Open Public Ledger

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Answer 12

a shared distributed database accessible to everyone, such as Blockchain technology, that uses a P2P network.

Question 13

PKCS

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Answer 13

PKCS (Public Key Cryptography Standards) - a collection of standards that define various cryptographic techniques such as private/public keys.

Question 14

P12 file format

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Answer 14

A secure archive that bundles a digital certificate with a private key for encryption/decryption, used to transfer between different programs.

Question 15

Digital certificate

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Answer 15

A digital document that verifies the identity of an entity online.

Question 16

What is the role of Registration Authority (RA) in PKI?

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Answer 16

RA (Registration Authority) is a third party working for a CA that authorizes entities and individuals applying for digital certificates but do not issue the digital certificates themselves.

Question 17

CRL

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Answer 17

CRL (Certificate Revocation List)
a list published by the CA (Certificate Authority) of all the revoked digital certificates.

Question 18

OCSP

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Answer 18

OCSP (Online Certificate Status Protocal)
an internet protocol /fastest way that lets you check the revocation status of a digital certificate in real-time