IAS QUIZ 10

The Diffie-Hellman key exchange is a simple public-key

algorithm.

• T

• F

The security of ElGamal is based on the difficulty of

computing discrete logarithms.

• T

• F

Most of the products and standards that use public-key

cryptography for encryption and digital signatures use RSA.

• T

• F

ECC is fundamentally easier to explain than either RSA or

Diffie-Hellman.

• F

• T

Elliptic curves are ellipses.

• F

• T

For determining the security of various elliptic curve ciphers it is of some interest to know the number of points in a finite abelian group defined over an elliptic curve.

• T

• F

The form of cubic equation appropriate for cryptographic applications for elliptic curves is somewhat different for GF(2m) than for Zp.

• T

• F

An encryption/decryption system requires that point Pm be encrypted as plaintext.

• T

• F

The security of ECC depends on how difficult it is to determine k given kP and P.

• T

• F

A considerably larger key size can be used for ECC compared to RSA.

• F

• T