node: add info message when JWT secret is loaded (ethereum#25095)

Co-authored-by: Felix Lange <fjl@twurst.com>

node/node.go

@@ -20,6 +20,7 @@ import (
 	crand "crypto/rand"
 	"errors"
 	"fmt"
+	"hash/crc32"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -352,10 +353,10 @@ func (n *Node) obtainJWTSecret(cliParam string) ([]byte, error) {
 		fileName = n.ResolvePath(datadirJWTKey)
 	}
 	// try reading from file
-	log.Debug("Reading JWT secret", "path", fileName)
 	if data, err := os.ReadFile(fileName); err == nil {
 		jwtSecret := common.FromHex(strings.TrimSpace(string(data)))
 		if len(jwtSecret) == 32 {
+			log.Info("Loaded JWT secret file", "path", fileName, "crc32", fmt.Sprintf("%#x", crc32.ChecksumIEEE(jwtSecret)))
 			return jwtSecret, nil
 		}
 		log.Error("Invalid JWT secret", "path", fileName, "length", len(jwtSecret))