Imports github.com/go-acme/lego/v4/certcrypto github.com/go-acme/lego/v4/certificate github.com/go-acme/lego/v4/challenge/http01 github.com/go-acme/lego/v4/challenge/tlsalpn01 github.com/go-acme/lego/v4/lego github.com/go-acme/lego/v4/registration Standard library imports crypto crypto/ecdsa crypto/elliptic crypto/rand crypto/tls crypto/x509/pkix errors os path sync time