Cryptography

Question 1

What is the difference between symmetric and asymmetric cryptography regarding keys?

Answer 1

Symmetric: single shared key, asymmetric: Key pair: public and private.

Question 2

What is the difference between symmetric and asymmetric cryptography regarding speed?

Answer 2

Symmetric: faster, asymmetric: slower.

Question 3

What is the difference between symmetric and asymmetric cryptography regarding the security of the key?

Answer 3

Symmetric: key must be securely shared, asymmetric: only the private key is secret.

Question 4

What is the difference between symmetric and asymmetric cryptography regarding usage?

Answer 4

Symmetric: encrypting large data volumes, asymmetric: secure key exchange, digital signatures.

Question 5

What is the difference between symmetric and asymmetric cryptography regarding algorithms?

Answer 5

Symmetric: AES, DES, 3DES, RC4, asymmetric: RSA, ECC, DSA.

Question 6

What is the difference between symmetric and asymmetric cryptography regarding scalability?

Answer 6

Symmetric: Difficult (requires key sharing for each pair of users), asymmetric: Easier (only public keys are shared).

Question 7

What does AES stand for?

Answer 7

Advanced Encryption Standard

Question 8

What does DES stand for?

Answer 8

Data Encryption Standard

Question 9

What does 3DES stand for?

Answer 9

Triple Data Encryption standard

Question 10

What does RC4 stand for?

Answer 10

Rivest Cipher 4

Question 11

What is the most secure symmetric cryptography algorithm?

Answer 11

AES.

Question 12

What key lengths does AES come in?

Answer 12

128-bit, 192-bit, and 256-bit.

Question 13

What does RSA stand for?

Answer 13

Rivest–Shamir–Adleman

Question 14

What does ECC stand for?

Answer 14

Elliptic Curve Cryptography

Question 15

What does DSA stand for?

Answer 15

Digital Signature Algorithm

Question 16

What is the most secure asymmetric algorithm?

Answer 16

ECC.