Imports github.com/go-acme/lego/v4/certcrypto github.com/go-acme/lego/v4/certificate github.com/go-acme/lego/v4/challenge github.com/go-acme/lego/v4/lego github.com/go-acme/lego/v4/registration golang.org/x/crypto/ocsp golang.org/x/exp/slices Standard library imports crypto crypto/ecdsa crypto/elliptic crypto/rand crypto/tls crypto/x509 crypto/x509/pkix encoding/json encoding/pem errors fmt log math/big os sort strings sync time