the end of key // generation and return an error if it fails. See [checkPrivateKey]. if isPrime(b) { return b, nil } } } // isPrime runs the Miller-Rabin Probabilistic Primality Test from // FIPS 186-5, Appendix B.3.1. // // w must be a random odd integer greater than three in big-endian order. // isPrime might return false positives for adversarially chosen values. // // isPrime is not constant-time. func isPrime(w []byte) bool { mr, err := millerRabinSetup(w) if err != nil { // w is zero, one, or...