diff --git a/common/common.go b/common/common.go
index a7d06d5..b7a8d38 100644
--- a/common/common.go
+++ b/common/common.go
@@ -1,2 +1,36 @@
 // Package common contains common utilities that are shared among other packages.
 package common
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+
+	"golang.org/x/crypto/curve25519"
+)
+
+func X25519() {
+	var publicKey []byte
+	privateKey := make([]byte, curve25519.ScalarSize)
+	if _, err := rand.Read(privateKey); err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	// Modify random bytes using algorithm described at:
+	// https://cr.yp.to/ecdh.html.
+	privateKey[0] &= 248
+	privateKey[31] &= 127
+	privateKey[31] |= 64
+
+	publicKey, err := curve25519.X25519(privateKey, curve25519.Basepoint)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	output := fmt.Sprintf("Private key: %v\nPublic key: %v",
+		base64.RawURLEncoding.EncodeToString(privateKey),
+		base64.RawURLEncoding.EncodeToString(publicKey))
+	fmt.Println(output)
+}
diff --git a/main/config.yml.example b/main/config.yml.example
index b16de6c..d424d10 100644
--- a/main/config.yml.example
+++ b/main/config.yml.example
@@ -53,14 +53,14 @@ Nodes:
           Dest: 80 # Required, Destination of fallback, check https://xtls.github.io/config/features/fallback.html for details.
           ProxyProtocolVer: 0 # Send PROXY protocol version, 0 for disable
       DisableLocalREALITYConfig: false  # disable local reality config
-      EnableREALITY: true # Enable REALITY
+      EnableREALITY: false # Enable REALITY
       REALITYConfigs:
         Show: true # Show REALITY debug
         Dest: www.smzdm.com:443 # Required, Same as fallback
         ProxyProtocolVer: 0 # Send PROXY protocol version, 0 for disable
         ServerNames: # Required, list of available serverNames for the client, * wildcard is not supported at the moment.
           - www.smzdm.com
-        PrivateKey: YOUR_PRIVATE_KEY # Required, execute './xray x25519' to generate.
+        PrivateKey: YOUR_PRIVATE_KEY # Required, execute './XrayR -x25519' to generate.
         MinClientVer: # Optional, minimum version of Xray client, format is x.y.z.
         MaxClientVer: # Optional, maximum version of Xray client, format is x.y.z.
         MaxTimeDiff: 0 # Optional, maximum allowed time difference, unit is in milliseconds.
diff --git a/main/main.go b/main/main.go
index eac73d8..03fb3e4 100644
--- a/main/main.go
+++ b/main/main.go
@@ -15,12 +15,14 @@ import (
 	"github.com/fsnotify/fsnotify"
 	"github.com/spf13/viper"
 
+	"github.com/XrayR-project/XrayR/common"
 	"github.com/XrayR-project/XrayR/panel"
 )
 
 var (
 	configFile   = flag.String("config", "", "Config file for XrayR.")
 	printVersion = flag.Bool("version", false, "show version")
+	x25519       = flag.Bool("x25519", false, "Generate key pair for x25519 key exchange")
 )
 
 var (
@@ -71,6 +73,10 @@ func main() {
 	if *printVersion {
 		return
 	}
+	if *x25519 {
+		common.X25519()
+		return
+	}
 
 	config := getConfig()
 	panelConfig := &panel.Config{}