This lesson's interactive features are locked, please to keep using them
Private Key
While (n, e) is the public key, d is the private key. That said, d can be derived from p and q, so you can also consider the pair of p and q the private key, but it's just different ways to look at it.
At the end of the day, p, q, tot and d should all be kept secret, there's no reason to share anything other than (n, e).
Generating D
d is simply the modular multiplicative inverse of e (mod tot).
Assignment
Complete the getD function.
func getD(e, tot *big.Int) *big.Int
Use the ModInverse method to calculate d and return it.