Check for patched go crypto lib at runtime (#4671)

Panic if the used crypto library is not being used for compiling

server/eebus.go

@@ -19,6 +19,7 @@ import (
 	"github.com/evcc-io/evcc/util"
 	"github.com/evcc-io/evcc/util/machine"
 	"github.com/libp2p/zeroconf/v2"
+	"golang.org/x/crypto/cryptobyte"
 )
 
 var EEBUSDetails = communication.ManufacturerDetails{
@@ -92,6 +93,13 @@ func NewEEBus(other map[string]interface{}) (*EEBus, error) {
 		return nil, err
 	}
 
+	// Test if go is patched for accepting the buggy Elli certificate
+	var res bool
+	b := cryptobyte.String([]byte{0x01, 0x01, 0x01})
+	if ok := b.ReadASN1Boolean(&res); !ok {
+		panic("EEBUS needs a patched go crypto library. Run `make patch-asn1` before compiling.")
+	}
+
 	srv := &server.Server{
 		Log:         log.TRACE,
 		Addr:        cc.Uri,