diff --git a/config/bridge.go b/config/bridge.go
index 0c4e019..31b08ac 100644
--- a/config/bridge.go
+++ b/config/bridge.go
@@ -61,6 +61,12 @@ type BridgeConfig struct {
 			RequireCrossSigning bool `yaml:"require_cross_signing"`
 			RequireVerification bool `yaml:"require_verification"`
 		} `yaml:"key_sharing"`
+
+		PuppetId struct {
+			Allow                  bool `yaml:"allow"`
+			Key                    string `yaml:"key"`
+			UsernameTemplatePrefix string `yaml:"username_template_prefix"`
+		} `yaml:"puppet_id"`
 	} `yaml:"encryption"`
 
 	Permissions PermissionConfig `yaml:"permissions"`
diff --git a/config/config.go b/config/config.go
index 208ed1b..fb19b7d 100644
--- a/config/config.go
+++ b/config/config.go
@@ -99,10 +99,10 @@ func (config *Config) MakeAppService() (*appservice.AppService, error) {
 	as.HomeserverURL = config.Homeserver.Address
 	as.Host.Hostname = config.AppService.Hostname
 	as.Host.Port = config.AppService.Port
-	patch.ThirdPartyIdEncrypt = true
+	patch.ThirdPartyIdEncrypt = config.Bridge.Encryption.PuppetId.Allow
 	patch.AsBotName = config.AppService.Bot.Username
-	patch.AsUserPrefix = "skype&"
-	patch.XorKey = "hudsds1y"
+	patch.AsUserPrefix = config.Bridge.Encryption.PuppetId.UsernameTemplatePrefix
+	patch.XorKey = config.Bridge.Encryption.PuppetId.Key
 	var err error
 	as.Registration, err = config.GetRegistration()
 	return as, err
diff --git a/example-config.yaml b/example-config.yaml
index 78c8cfc..d0c4d59 100644
--- a/example-config.yaml
+++ b/example-config.yaml
@@ -168,6 +168,14 @@ bridge:
         # It is recommended to also set private_chat_portal_meta to true when using this.
         default: false
 
+        puppet_id:
+            # when set to true, the matrixid of the contact (puppet) from the bridge to the matrix will be encrypted into another string
+            default: false
+            # 8 characters
+            key: '12dsf323'
+            # Use the username_template prefix. (Warning: At present, username_template cannot be too complicated, otherwise this function may cause unknown errors)
+            username_template_prefix: 'skype&'
+
     # Permissions for using the bridge.
     # Permitted values:
     # relaybot - Talk through the relaybot (if enabled), no access otherwise
diff --git a/go.mod b/go.mod
index ac80bb8..b0f7011 100644
--- a/go.mod
+++ b/go.mod
@@ -18,4 +18,4 @@ require (
 	maunium.net/go/mautrix v0.8.0-rc.4
 )
 
-replace maunium.net/go/mautrix => github.com/pidongqianqian/mautrix-go v0.8.0-rc.4.0.20201126070406-7b13ac473bcc
+replace maunium.net/go/mautrix => github.com/pidongqianqian/mautrix-go v0.8.0-rc.4.0.20201208081810-787323a21113