Is it possible to generate an invalid PrivateKey when no secret it passed? #390
Description
If I don't pass a secret to secp256k1.Signing.PrivateKey I get a random one. Checking the code to see its implementation, I see that it may be possible to generate an invalid key?
This will calculate a safe random number of 32 bytes, but I believe a couple of values may be invalid (see https://crypto.stackexchange.com/a/30272).
Not sure if down the line there are some checks to check the validity of this value or if when generating the PublicKey (in the same constructor) it will throw an error due to this reason.