Multiple choice

In the RSA public key cryptosystem, the private and public keys are $(e, n)$ and $(d, n)$ respectively, where $n=p \times q$ and $p$ and $q$ are large primes. Besides, $n$ is public and $p$ and $q$ are private. Let $M$ be an integer such that $0

  1. I and II

  2. I and III

  3. II and IV

  4. III and IV

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation