REFACTOR

https://github.com/XTLS/Xray-core/pull/4952#issuecomment-3217485418

app/proxyman/inbound/worker.go

@@ -91,6 +91,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	}
 	ctx = session.ContextWithInbound(ctx, &session.Inbound{
 		Source:  net.DestinationFromAddr(conn.RemoteAddr()),
+		Local:   net.DestinationFromAddr(conn.LocalAddr()),
 		Gateway: net.TCPDestination(w.address, w.port),
 		Tag:     w.tag,
 		Conn:    conn,
@@ -321,8 +322,10 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 				outbounds[0].Target = originalDest
 			}
 			ctx = session.ContextWithOutbounds(ctx, outbounds)
+
 			ctx = session.ContextWithInbound(ctx, &session.Inbound{
 				Source:  source,
+				Local:   net.DestinationFromAddr(w.hub.Addr()),
 				Gateway: net.UDPDestination(w.address, w.port),
 				Tag:     w.tag,
 			})
@@ -472,6 +475,7 @@ func (w *dsWorker) callback(conn stat.Connection) {
 	}
 	ctx = session.ContextWithInbound(ctx, &session.Inbound{
 		Source:  net.DestinationFromAddr(conn.RemoteAddr()),
+		Local:   net.DestinationFromAddr(conn.LocalAddr()),
 		Gateway: net.UnixDestination(w.address),
 		Tag:     w.tag,
 		Conn:    conn,

app/router/command/command.pb.go

@@ -42,6 +42,8 @@ type RoutingContext struct {
 	Attributes        map[string]string `protobuf:"bytes,10,rep,name=Attributes,proto3" json:"Attributes,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	OutboundGroupTags []string          `protobuf:"bytes,11,rep,name=OutboundGroupTags,proto3" json:"OutboundGroupTags,omitempty"`
 	OutboundTag       string            `protobuf:"bytes,12,opt,name=OutboundTag,proto3" json:"OutboundTag,omitempty"`
+	LocalIPs          [][]byte          `protobuf:"bytes,13,rep,name=LocalIPs,proto3" json:"LocalIPs,omitempty"`
+	LocalPort         uint32            `protobuf:"varint,14,opt,name=LocalPort,proto3" json:"LocalPort,omitempty"`
 }
 
 func (x *RoutingContext) Reset() {
@@ -158,6 +160,20 @@ func (x *RoutingContext) GetOutboundTag() string {
 	return ""
 }
 
+func (x *RoutingContext) GetLocalIPs() [][]byte {
+	if x != nil {
+		return x.LocalIPs
+	}
+	return nil
+}
+
+func (x *RoutingContext) GetLocalPort() uint32 {
+	if x != nil {
+		return x.LocalPort
+	}
+	return 0
+}
+
 // SubscribeRoutingStatsRequest subscribes to routing statistics channel if
 // opened by xray-core.
 // * FieldSelectors selects a subset of fields in routing statistics to return.
@@ -827,7 +843,7 @@ var file_app_router_command_command_proto_rawDesc = []byte{
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@@ -857,123 +873,127 @@ var file_app_router_command_command_proto_rawDesc = []byte{
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+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

app/router/command/command.proto

@@ -25,6 +25,8 @@ message RoutingContext {
   map<string, string> Attributes = 10;
   repeated string OutboundGroupTags = 11;
   string OutboundTag = 12;
+  repeated bytes LocalIPs = 13;
+  uint32 LocalPort = 14;
 }
 
 // SubscribeRoutingStatsRequest subscribes to routing statistics channel if

app/router/command/config.go

@@ -28,6 +28,14 @@ func (c routingContext) GetTargetPort() net.Port {
 	return net.Port(c.RoutingContext.GetTargetPort())
 }
 
+func (c routingContext) GetLocalIPs() []net.IP {
+	return mapBytesToIPs(c.RoutingContext.GetLocalIPs())
+}
+
+func (c routingContext) GetLocalPort() net.Port {
+	return net.Port(c.RoutingContext.GetLocalPort())
+}
+
 func (c routingContext) GetRuleTag() string {
 	return ""
 }
@@ -54,8 +62,10 @@ var fieldMap = map[string]func(*RoutingContext, routing.Route){
 	"network":        func(s *RoutingContext, r routing.Route) { s.Network = r.GetNetwork() },
 	"ip_source":      func(s *RoutingContext, r routing.Route) { s.SourceIPs = mapIPsToBytes(r.GetSourceIPs()) },
 	"ip_target":      func(s *RoutingContext, r routing.Route) { s.TargetIPs = mapIPsToBytes(r.GetTargetIPs()) },
+	"ip_local":       func(s *RoutingContext, r routing.Route) { s.LocalIPs = mapIPsToBytes(r.GetLocalIPs()) },
 	"port_source":    func(s *RoutingContext, r routing.Route) { s.SourcePort = uint32(r.GetSourcePort()) },
 	"port_target":    func(s *RoutingContext, r routing.Route) { s.TargetPort = uint32(r.GetTargetPort()) },
+	"port_local":     func(s *RoutingContext, r routing.Route) { s.LocalPort = uint32(r.GetLocalPort()) },
 	"domain":         func(s *RoutingContext, r routing.Route) { s.TargetDomain = r.GetTargetDomain() },
 	"protocol":       func(s *RoutingContext, r routing.Route) { s.Protocol = r.GetProtocol() },
 	"user":           func(s *RoutingContext, r routing.Route) { s.User = r.GetUser() },

app/router/condition.go

@@ -113,10 +113,10 @@ func (m *DomainMatcher) Apply(ctx routing.Context) bool {
 
 type MultiGeoIPMatcher struct {
 	matchers []*GeoIPMatcher
-	onSource bool
+	asType   string // local, source, target
 }
 
-func NewMultiGeoIPMatcher(geoips []*GeoIP, onSource bool) (*MultiGeoIPMatcher, error) {
+func NewMultiGeoIPMatcher(geoips []*GeoIP, asType string) (*MultiGeoIPMatcher, error) {
 	var matchers []*GeoIPMatcher
 	for _, geoip := range geoips {
 		matcher, err := GlobalGeoIPContainer.Add(geoip)
@@ -128,7 +128,7 @@ func NewMultiGeoIPMatcher(geoips []*GeoIP, onSource bool) (*MultiGeoIPMatcher, e
 
 	matcher := &MultiGeoIPMatcher{
 		matchers: matchers,
-		onSource: onSource,
+		asType:   asType,
 	}
 
 	return matcher, nil
@@ -137,11 +137,18 @@ func NewMultiGeoIPMatcher(geoips []*GeoIP, onSource bool) (*MultiGeoIPMatcher, e
 // Apply implements Condition.
 func (m *MultiGeoIPMatcher) Apply(ctx routing.Context) bool {
 	var ips []net.IP
-	if m.onSource {
+
+	switch m.asType {
+	case "local":
+		ips = ctx.GetLocalIPs()
+	case "source":
 		ips = ctx.GetSourceIPs()
-	} else {
+	case "target":
 		ips = ctx.GetTargetIPs()
+	default:
+		panic("unreachable, asType should be local or source or target")
 	}
+
 	for _, ip := range ips {
 		for _, matcher := range m.matchers {
 			if matcher.Match(ip) {
@@ -153,25 +160,31 @@ func (m *MultiGeoIPMatcher) Apply(ctx routing.Context) bool {
 }
 
 type PortMatcher struct {
-	port     net.MemoryPortList
-	onSource bool
+	port   net.MemoryPortList
+	asType string // local, source, target
 }
 
-// NewPortMatcher create a new port matcher that can match source or destination port
-func NewPortMatcher(list *net.PortList, onSource bool) *PortMatcher {
+// NewPortMatcher create a new port matcher that can match source or local or destination port
+func NewPortMatcher(list *net.PortList, asType string) *PortMatcher {
 	return &PortMatcher{
-		port:     net.PortListFromProto(list),
-		onSource: onSource,
+		port:   net.PortListFromProto(list),
+		asType: asType,
 	}
 }
 
 // Apply implements Condition.
 func (v *PortMatcher) Apply(ctx routing.Context) bool {
-	if v.onSource {
+	switch v.asType {
+	case "local":
+		return v.port.Contains(ctx.GetLocalPort())
+	case "source":
 		return v.port.Contains(ctx.GetSourcePort())
-	} else {
+	case "target":
 		return v.port.Contains(ctx.GetTargetPort())
+	default:
+		panic("unreachable, asType should be local or source or target")
 	}
+
 }
 
 type NetworkMatcher struct {

app/router/condition_test.go

@@ -495,7 +495,7 @@ func BenchmarkMultiGeoIPMatcher(b *testing.B) {
 		})
 	}
 
-	matcher, err := NewMultiGeoIPMatcher(geoips, false)
+	matcher, err := NewMultiGeoIPMatcher(geoips, "target")
 	common.Must(err)
 
 	ctx := withOutbound(&session.Outbound{Target: net.TCPDestination(net.ParseAddress("8.8.8.8"), 80)})

app/router/config.go

@@ -61,11 +61,15 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	}
 
 	if rr.PortList != nil {
-		conds.Add(NewPortMatcher(rr.PortList, false))
+		conds.Add(NewPortMatcher(rr.PortList, "target"))
 	}
 
 	if rr.SourcePortList != nil {
-		conds.Add(NewPortMatcher(rr.SourcePortList, true))
+		conds.Add(NewPortMatcher(rr.SourcePortList, "source"))
+	}
+
+	if rr.LocalPortList != nil {
+		conds.Add(NewPortMatcher(rr.LocalPortList, "local"))
 	}
 
 	if len(rr.Networks) > 0 {
@@ -73,7 +77,7 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	}
 
 	if len(rr.Geoip) > 0 {
-		cond, err := NewMultiGeoIPMatcher(rr.Geoip, false)
+		cond, err := NewMultiGeoIPMatcher(rr.Geoip, "target")
 		if err != nil {
 			return nil, err
 		}
@@ -81,13 +85,22 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	}
 
 	if len(rr.SourceGeoip) > 0 {
-		cond, err := NewMultiGeoIPMatcher(rr.SourceGeoip, true)
+		cond, err := NewMultiGeoIPMatcher(rr.SourceGeoip, "source")
 		if err != nil {
 			return nil, err
 		}
 		conds.Add(cond)
 	}
 
+	if len(rr.LocalGeoip) > 0 {
+		cond, err := NewMultiGeoIPMatcher(rr.LocalGeoip, "local")
+		if err != nil {
+			return nil, err
+		}
+		conds.Add(cond)
+		errors.LogWarning(context.Background(), "Due to some limitations, in UDP connections, localIP is always equal to listen interface IP, so \"localIP\" rule condition does not work properly on UDP inbound connections that listen on all interfaces")
+	}
+
 	if len(rr.Protocol) > 0 {
 		conds.Add(NewProtocolMatcher(rr.Protocol))
 	}

app/router/config.pb.go

@@ -470,7 +470,7 @@ type RoutingRule struct {
 	//	*RoutingRule_Tag
 	//	*RoutingRule_BalancingTag
 	TargetTag isRoutingRule_TargetTag `protobuf_oneof:"target_tag"`
-	RuleTag   string                  `protobuf:"bytes,18,opt,name=rule_tag,json=ruleTag,proto3" json:"rule_tag,omitempty"`
+	RuleTag   string                  `protobuf:"bytes,20,opt,name=rule_tag,json=ruleTag,proto3" json:"rule_tag,omitempty"`
 	// List of domains for target domain matching.
 	Domain []*Domain `protobuf:"bytes,2,rep,name=domain,proto3" json:"domain,omitempty"`
 	// List of GeoIPs for target IP address matching. If this entry exists, the
@@ -492,6 +492,8 @@ type RoutingRule struct {
 	Protocol       []string          `protobuf:"bytes,9,rep,name=protocol,proto3" json:"protocol,omitempty"`
 	Attributes     map[string]string `protobuf:"bytes,15,rep,name=attributes,proto3" json:"attributes,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	DomainMatcher  string            `protobuf:"bytes,17,opt,name=domain_matcher,json=domainMatcher,proto3" json:"domain_matcher,omitempty"`
+	LocalGeoip     []*GeoIP          `protobuf:"bytes,18,rep,name=local_geoip,json=localGeoip,proto3" json:"local_geoip,omitempty"`
+	LocalPortList  *net.PortList     `protobuf:"bytes,19,opt,name=local_port_list,json=localPortList,proto3" json:"local_port_list,omitempty"`
 }
 
 func (x *RoutingRule) Reset() {
@@ -629,6 +631,20 @@ func (x *RoutingRule) GetDomainMatcher() string {
 	return ""
 }
 
+func (x *RoutingRule) GetLocalGeoip() []*GeoIP {
+	if x != nil {
+		return x.LocalGeoip
+	}
+	return nil
+}
+
+func (x *RoutingRule) GetLocalPortList() *net.PortList {
+	if x != nil {
+		return x.LocalPortList
+	}
+	return nil
+}
+
 type isRoutingRule_TargetTag interface {
 	isRoutingRule_TargetTag()
 }
@@ -1069,13 +1085,13 @@ var file_app_router_config_proto_rawDesc = []byte{
 	0x6f, 0x53, 0x69, 0x74, 0x65, 0x4c, 0x69, 0x73, 0x74, 0x12, 0x2e, 0x0a, 0x05, 0x65, 0x6e, 0x74,
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 	0x2f, 0x0a, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32,
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@@ -1109,67 +1125,75 @@ var file_app_router_config_proto_rawDesc = []byte{
 	0x62, 0x75, 0x74, 0x65, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x0a, 0x61, 0x74, 0x74, 0x72,
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+	0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1220,16 +1244,18 @@ var file_app_router_config_proto_depIdxs = []int32{
 	4,  // 10: xray.app.router.RoutingRule.source_geoip:type_name -> xray.app.router.GeoIP
 	15, // 11: xray.app.router.RoutingRule.source_port_list:type_name -> xray.common.net.PortList
 	14, // 12: xray.app.router.RoutingRule.attributes:type_name -> xray.app.router.RoutingRule.AttributesEntry
-	17, // 13: xray.app.router.BalancingRule.strategy_settings:type_name -> xray.common.serial.TypedMessage
-	10, // 14: xray.app.router.StrategyLeastLoadConfig.costs:type_name -> xray.app.router.StrategyWeight
-	1,  // 15: xray.app.router.Config.domain_strategy:type_name -> xray.app.router.Config.DomainStrategy
-	8,  // 16: xray.app.router.Config.rule:type_name -> xray.app.router.RoutingRule
-	9,  // 17: xray.app.router.Config.balancing_rule:type_name -> xray.app.router.BalancingRule
-	18, // [18:18] is the sub-list for method output_type
-	18, // [18:18] is the sub-list for method input_type
-	18, // [18:18] is the sub-list for extension type_name
-	18, // [18:18] is the sub-list for extension extendee
-	0,  // [0:18] is the sub-list for field type_name
+	4,  // 13: xray.app.router.RoutingRule.local_geoip:type_name -> xray.app.router.GeoIP
+	15, // 14: xray.app.router.RoutingRule.local_port_list:type_name -> xray.common.net.PortList
+	17, // 15: xray.app.router.BalancingRule.strategy_settings:type_name -> xray.common.serial.TypedMessage
+	10, // 16: xray.app.router.StrategyLeastLoadConfig.costs:type_name -> xray.app.router.StrategyWeight
+	1,  // 17: xray.app.router.Config.domain_strategy:type_name -> xray.app.router.Config.DomainStrategy
+	8,  // 18: xray.app.router.Config.rule:type_name -> xray.app.router.RoutingRule
+	9,  // 19: xray.app.router.Config.balancing_rule:type_name -> xray.app.router.BalancingRule
+	20, // [20:20] is the sub-list for method output_type
+	20, // [20:20] is the sub-list for method input_type
+	20, // [20:20] is the sub-list for extension type_name
+	20, // [20:20] is the sub-list for extension extendee
+	0,  // [0:20] is the sub-list for field type_name
 }
 
 func init() { file_app_router_config_proto_init() }

app/router/config.proto

@@ -79,7 +79,7 @@ message RoutingRule {
     // Tag of routing balancer.
     string balancing_tag = 12;
   }
-    string rule_tag = 18;
+    string rule_tag = 20;
 
   // List of domains for target domain matching.
   repeated Domain domain = 2;
@@ -110,6 +110,9 @@ message RoutingRule {
   map<string, string> attributes = 15;
 
   string domain_matcher = 17;
+
+  repeated GeoIP local_geoip = 18;
+  xray.common.net.PortList local_port_list = 19;
 }
 
 message BalancingRule {

app/stats/online_map.go

@@ -7,7 +7,6 @@ import (
 
 // OnlineMap is an implementation of stats.OnlineMap.
 type OnlineMap struct {
-	value         int
 	ipList        map[string]time.Time
 	access        sync.RWMutex
 	lastCleanup   time.Time
@@ -25,7 +24,10 @@ func NewOnlineMap() *OnlineMap {
 
 // Count implements stats.OnlineMap.
 func (c *OnlineMap) Count() int {
-	return c.value
+	c.access.RLock()
+	defer c.access.RUnlock()
+
+	return len(c.ipList)
 }
 
 // List implements stats.OnlineMap.
@@ -35,23 +37,18 @@ func (c *OnlineMap) List() []string {
 
 // AddIP implements stats.OnlineMap.
 func (c *OnlineMap) AddIP(ip string) {
-	list := c.ipList
-
 	if ip == "127.0.0.1" {
 		return
 	}
+
 	c.access.Lock()
-	if _, ok := list[ip]; !ok {
-		list[ip] = time.Now()
-	}
+	c.ipList[ip] = time.Now()
 	c.access.Unlock()
+
 	if time.Since(c.lastCleanup) > c.cleanupPeriod {
-		list = c.RemoveExpiredIPs(list)
+		c.RemoveExpiredIPs()
 		c.lastCleanup = time.Now()
 	}
-
-	c.value = len(list)
-	c.ipList = list
 }
 
 func (c *OnlineMap) GetKeys() []string {
@@ -65,24 +62,22 @@ func (c *OnlineMap) GetKeys() []string {
 	return keys
 }
 
-func (c *OnlineMap) RemoveExpiredIPs(list map[string]time.Time) map[string]time.Time {
+func (c *OnlineMap) RemoveExpiredIPs() {
 	c.access.Lock()
 	defer c.access.Unlock()
 
 	now := time.Now()
-	for k, t := range list {
+	for k, t := range c.ipList {
 		diff := now.Sub(t)
 		if diff.Seconds() > 20 {
-			delete(list, k)
+			delete(c.ipList, k)
 		}
 	}
-	return list
 }
 
 func (c *OnlineMap) IpTimeMap() map[string]time.Time {
-	list := c.ipList
 	if time.Since(c.lastCleanup) > c.cleanupPeriod {
-		list = c.RemoveExpiredIPs(list)
+		c.RemoveExpiredIPs()
 		c.lastCleanup = time.Now()
 	}
 

common/protocol/headers.go

@@ -79,20 +79,18 @@ type CommandSwitchAccount struct {
 }
 
 var (
-	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ
+	// Keep in sync with crypto/tls/cipher_suites.go.
+	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ && cpu.X86.HasSSE41 && cpu.X86.HasSSSE3
 	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
-	// Keep in sync with crypto/aes/cipher_s390x.go.
-	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCBC && cpu.S390X.HasAESCTR &&
-		(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)
+	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCTR && cpu.S390X.HasGHASH
+	hasGCMAsmPPC64 = runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le"
 
-	hasAESGCMHardwareSupport = runtime.GOARCH == "amd64" && hasGCMAsmAMD64 ||
-		runtime.GOARCH == "arm64" && hasGCMAsmARM64 ||
-		runtime.GOARCH == "s390x" && hasGCMAsmS390X
+	HasAESGCMHardwareSupport = hasGCMAsmAMD64 || hasGCMAsmARM64 || hasGCMAsmS390X || hasGCMAsmPPC64
 )
 
 func (sc *SecurityConfig) GetSecurityType() SecurityType {
 	if sc == nil || sc.Type == SecurityType_AUTO {
-		if hasAESGCMHardwareSupport {
+		if HasAESGCMHardwareSupport {
 			return SecurityType_AES128_GCM
 		}
 		return SecurityType_CHACHA20_POLY1305

common/session/session.go

@@ -36,6 +36,8 @@ func ExportIDToError(ctx context.Context) errors.ExportOption {
 type Inbound struct {
 	// Source address of the inbound connection.
 	Source net.Destination
+	// Local address of the inbound connection.
+	Local net.Destination
 	// Gateway address.
 	Gateway net.Destination
 	// Tag of the inbound proxy that handles the connection.

features/routing/context.go

@@ -23,6 +23,12 @@ type Context interface {
 	// GetTargetPort returns the target port of the connection.
 	GetTargetPort() net.Port
 
+	// GetLocalIPs returns the local IPs bound to the connection.
+	GetLocalIPs() []net.IP
+
+	// GetLocalPort returns the local port of the connection.
+	GetLocalPort() net.Port
+
 	// GetTargetDomain returns the target domain of the connection, if exists.
 	GetTargetDomain() string
 

features/routing/session/context.go

@@ -28,12 +28,13 @@ func (ctx *Context) GetSourceIPs() []net.IP {
 	if ctx.Inbound == nil || !ctx.Inbound.Source.IsValid() {
 		return nil
 	}
-	dest := ctx.Inbound.Source
-	if dest.Address.Family().IsDomain() {
-		return nil
+
+	if ctx.Inbound.Source.Address.Family().IsIP() {
+		return []net.IP{ctx.Inbound.Source.Address.IP()}
 	}
 
-	return []net.IP{dest.Address.IP()}
+	return nil
+
 }
 
 // GetSourcePort implements routing.Context.
@@ -65,6 +66,27 @@ func (ctx *Context) GetTargetPort() net.Port {
 	return ctx.Outbound.Target.Port
 }
 
+// GetLocalIPs implements routing.Context.
+func (ctx *Context) GetLocalIPs() []net.IP {
+	if ctx.Inbound == nil || !ctx.Inbound.Local.IsValid() {
+		return nil
+	}
+
+	if ctx.Inbound.Local.Address.Family().IsIP() {
+		return []net.IP{ctx.Inbound.Local.Address.IP()}
+	}
+
+	return nil
+}
+
+// GetLocalPort implements routing.Context.
+func (ctx *Context) GetLocalPort() net.Port {
+	if ctx.Inbound == nil || !ctx.Inbound.Local.IsValid() {
+		return 0
+	}
+	return ctx.Inbound.Local.Port
+}
+
 // GetTargetDomain implements routing.Context.
 func (ctx *Context) GetTargetDomain() string {
 	if ctx.Outbound == nil || !ctx.Outbound.Target.IsValid() {

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/golang/mock v1.7.0-rc.1
 	github.com/google/go-cmp v0.7.0
 	github.com/gorilla/websocket v1.5.3
-	github.com/miekg/dns v1.1.67
+	github.com/miekg/dns v1.1.68
 	github.com/pelletier/go-toml v1.9.5
 	github.com/pires/go-proxyproto v0.8.1
 	github.com/quic-go/quic-go v0.54.0
@@ -21,13 +21,13 @@ require (
 	github.com/vishvananda/netlink v1.3.1
 	github.com/xtls/reality v0.0.0-20250725142056-5b52a03d4fb7
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
-	golang.org/x/crypto v0.40.0
-	golang.org/x/net v0.42.0
+	golang.org/x/crypto v0.41.0
+	golang.org/x/net v0.43.0
 	golang.org/x/sync v0.16.0
-	golang.org/x/sys v0.34.0
+	golang.org/x/sys v0.35.0
 	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
 	google.golang.org/grpc v1.74.2
-	google.golang.org/protobuf v1.36.6
+	google.golang.org/protobuf v1.36.7
 	gvisor.dev/gvisor v0.0.0-20250428193742-2d800c3129d5
 	h12.io/socks v1.0.3
 	lukechampine.com/blake3 v1.4.1
@@ -47,10 +47,10 @@ require (
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	go.uber.org/mock v0.5.0 // indirect
-	golang.org/x/mod v0.25.0 // indirect
-	golang.org/x/text v0.27.0 // indirect
+	golang.org/x/mod v0.26.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
 	golang.org/x/time v0.7.0 // indirect
-	golang.org/x/tools v0.34.0 // indirect
+	golang.org/x/tools v0.35.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect

go.sum

@@ -38,8 +38,8 @@ github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/miekg/dns v1.1.67 h1:kg0EHj0G4bfT5/oOys6HhZw4vmMlnoZ+gDu8tJ/AlI0=
-github.com/miekg/dns v1.1.67/go.mod h1:fujopn7TB3Pu3JM69XaawiU0wqjpL9/8xGop5UrTPps=
+github.com/miekg/dns v1.1.68 h1:jsSRkNozw7G/mnmXULynzMNIsgY2dHC8LO6U6Ij2JEA=
+github.com/miekg/dns v1.1.68/go.mod h1:fujopn7TB3Pu3JM69XaawiU0wqjpL9/8xGop5UrTPps=
 github.com/pelletier/go-toml v1.9.5 h1:4yBQzkHv+7BHq2PQUZF3Mx0IYxG7LsP222s7Agd3ve8=
 github.com/pelletier/go-toml v1.9.5/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
 github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2 h1:JhzVVoYvbOACxoUmOs6V/G4D5nPVUW73rKvXxP4XUJc=
@@ -96,16 +96,16 @@ go4.org/netipx v0.0.0-20231129151722-fdeea329fbba h1:0b9z3AuHCjxk0x/opv64kcgZLBs
 go4.org/netipx v0.0.0-20231129151722-fdeea329fbba/go.mod h1:PLyyIXexvUFg3Owu6p/WfdlivPbZJsZdgWZlrGope/Y=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.40.0 h1:r4x+VvoG5Fm+eJcxMaY8CQM7Lb0l1lsmjGBQ6s8BfKM=
-golang.org/x/crypto v0.40.0/go.mod h1:Qr1vMER5WyS2dfPHAlsOj01wgLbsyWtFn/aY+5+ZdxY=
+golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
+golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
 golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
-golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
-golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
+golang.org/x/mod v0.26.0 h1:EGMPT//Ezu+ylkCijjPc+f4Aih7sZvaAr+O3EHBxvZg=
+golang.org/x/mod v0.26.0/go.mod h1:/j6NAhSk8iQ723BGAUyoAcn7SlD7s15Dp9Nd/SfeaFQ=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.42.0 h1:jzkYrhi3YQWD6MLBJcsklgQsoAcw89EcZbJw8Z614hs=
-golang.org/x/net v0.42.0/go.mod h1:FF1RA5d3u7nAYA4z2TkclSCKh68eSXtiFwcWQpPXdt8=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
@@ -117,21 +117,21 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.34.0 h1:H5Y5sJ2L2JRdyv7ROF1he/lPdvFsd0mJHFw2ThKHxLA=
-golang.org/x/sys v0.34.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.27.0 h1:4fGWRpyh641NLlecmyl4LOe6yDdfaYNrGb2zdfo4JV4=
-golang.org/x/text v0.27.0/go.mod h1:1D28KMCvyooCX9hBiosv5Tz/+YLxj0j7XhWjpSUF7CU=
+golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
 golang.org/x/time v0.7.0 h1:ntUhktv3OPE6TgYxXWv9vKvUSJyIFJlyohwbkEwPrKQ=
 golang.org/x/time v0.7.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.8/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
-golang.org/x/tools v0.34.0 h1:qIpSLOxeCYGg9TrcJokLBG4KFA6d795g0xkBkiESGlo=
-golang.org/x/tools v0.34.0/go.mod h1:pAP9OwEaY1CAW3HOmg3hLZC5Z0CCmzjAF2UQMSqNARg=
+golang.org/x/tools v0.35.0 h1:mBffYraMEf7aa0sB+NuKnuCy8qI/9Bughn8dC2Gu5r0=
+golang.org/x/tools v0.35.0/go.mod h1:NKdj5HkL/73byiZSJjqJgKn3ep7KjFkBOkR/Hps3VPw=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -143,8 +143,8 @@ google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a h1:
 google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a/go.mod h1:qQ0YXyHHx3XkvlzUtpXDkS29lDSafHMZBAZDc03LQ3A=
 google.golang.org/grpc v1.74.2 h1:WoosgB65DlWVC9FqI82dGsZhWFNBSLjQ84bjROOpMu4=
 google.golang.org/grpc v1.74.2/go.mod h1:CtQ+BGjaAIXHs/5YS3i473GqwBBa1zGQNevxdeBEXrM=
-google.golang.org/protobuf v1.36.6 h1:z1NpPI8ku2WgiWnf+t9wTPsn6eP1L7ksHUlkfLvd9xY=
-google.golang.org/protobuf v1.36.6/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=
+google.golang.org/protobuf v1.36.7 h1:IgrO7UwFQGJdRNXH/sQux4R1Dj1WAKcLElzeeRaXV2A=
+google.golang.org/protobuf v1.36.7/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

infra/conf/freedom.go

@@ -27,12 +27,14 @@ type Fragment struct {
 	Packets  string      `json:"packets"`
 	Length   *Int32Range `json:"length"`
 	Interval *Int32Range `json:"interval"`
+	MaxSplit *Int32Range `json:"maxSplit"`
 }
 
 type Noise struct {
-	Type   string      `json:"type"`
-	Packet string      `json:"packet"`
-	Delay  *Int32Range `json:"delay"`
+	Type    string      `json:"type"`
+	Packet  string      `json:"packet"`
+	Delay   *Int32Range `json:"delay"`
+	ApplyTo string      `json:"applyTo"`
 }
 
 // Build implements Buildable
@@ -108,6 +110,13 @@ func (c *FreedomConfig) Build() (proto.Message, error) {
 			config.Fragment.IntervalMin = uint64(c.Fragment.Interval.From)
 			config.Fragment.IntervalMax = uint64(c.Fragment.Interval.To)
 		}
+
+		{
+			if c.Fragment.MaxSplit != nil {
+				config.Fragment.MaxSplitMin = uint64(c.Fragment.MaxSplit.From)
+				config.Fragment.MaxSplitMax = uint64(c.Fragment.MaxSplit.To)
+			}
+		}
 	}
 
 	if c.Noise != nil {
@@ -193,5 +202,15 @@ func ParseNoise(noise *Noise) (*freedom.Noise, error) {
 		NConfig.DelayMin = uint64(noise.Delay.From)
 		NConfig.DelayMax = uint64(noise.Delay.To)
 	}
+	switch strings.ToLower(noise.ApplyTo) {
+	case "", "ip", "all":
+		NConfig.ApplyTo = "ip"
+	case "ipv4":
+		NConfig.ApplyTo = "ipv4"
+	case "ipv6":
+		NConfig.ApplyTo = "ipv6"
+	default:
+		return nil, errors.New("Invalid applyTo, only ip/ipv4/ipv6 are supported")
+	}
 	return NConfig, nil
 }

infra/conf/router.go

@@ -536,12 +536,15 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		IP         *StringList       `json:"ip"`
 		Port       *PortList         `json:"port"`
 		Network    *NetworkList      `json:"network"`
-		SourceIP   *StringList       `json:"source"`
+		SourceIP   *StringList       `json:"sourceIP"`
+		Source     *StringList       `json:"source"`
 		SourcePort *PortList         `json:"sourcePort"`
 		User       *StringList       `json:"user"`
 		InboundTag *StringList       `json:"inboundTag"`
 		Protocols  *StringList       `json:"protocol"`
 		Attributes map[string]string `json:"attrs"`
+		LocalIP    *StringList       `json:"localIP"`
+		LocalPort  *PortList         `json:"localPort"`
 	}
 	rawFieldRule := new(RawFieldRule)
 	err := json.Unmarshal(msg, rawFieldRule)
@@ -604,6 +607,10 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		rule.Networks = rawFieldRule.Network.Build()
 	}
 
+	if rawFieldRule.SourceIP == nil {
+		rawFieldRule.SourceIP = rawFieldRule.Source
+	}
+
 	if rawFieldRule.SourceIP != nil {
 		geoipList, err := ToCidrList(*rawFieldRule.SourceIP)
 		if err != nil {
@@ -616,6 +623,18 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		rule.SourcePortList = rawFieldRule.SourcePort.Build()
 	}
 
+	if rawFieldRule.LocalIP != nil {
+		geoipList, err := ToCidrList(*rawFieldRule.LocalIP)
+		if err != nil {
+			return nil, err
+		}
+		rule.LocalGeoip = geoipList
+	}
+
+	if rawFieldRule.LocalPort != nil {
+		rule.LocalPortList = rawFieldRule.LocalPort.Build()
+	}
+
 	if rawFieldRule.User != nil {
 		for _, s := range *rawFieldRule.User {
 			rule.UserEmail = append(rule.UserEmail, s)

infra/conf/vless.go

@@ -1,6 +1,7 @@
 package conf
 
 import (
+	"encoding/base64"
 	"encoding/json"
 	"path/filepath"
 	"runtime"
@@ -68,10 +69,45 @@ func (c *VLessInboundConfig) Build() (proto.Message, error) {
 		config.Clients[idx] = user
 	}
 
-	if c.Decryption != "none" {
-		return nil, errors.New(`VLESS settings: please add/set "decryption":"none" to every settings`)
-	}
 	config.Decryption = c.Decryption
+	if !func() bool {
+		s := strings.Split(config.Decryption, ".")
+		if len(s) < 4 || s[0] != "mlkem768x25519plus" {
+			return false
+		}
+		switch s[1] {
+		case "native":
+		case "xorpub":
+			config.XorMode = 1
+		case "random":
+			config.XorMode = 2
+		default:
+			return false
+		}
+		if s[2] != "1rtt" {
+			t := strings.TrimSuffix(s[2], "s")
+			if t == s[2] {
+				return false
+			}
+			i, err := strconv.Atoi(t)
+			if err != nil {
+				return false
+			}
+			config.Seconds = uint32(i)
+		}
+		for i := 3; i < len(s); i++ {
+			if b, _ := base64.RawURLEncoding.DecodeString(s[i]); len(b) != 32 && len(b) != 64 {
+				return false
+			}
+		}
+		config.Decryption = config.Decryption[27+len(s[2]):]
+		return true
+	}() && config.Decryption != "none" {
+		if config.Decryption == "" {
+			return nil, errors.New(`VLESS settings: please add/set "decryption":"none" to every settings`)
+		}
+		return nil, errors.New(`VLESS settings: unsupported "decryption": ` + config.Decryption)
+	}
 
 	for _, fb := range c.Fallbacks {
 		var i uint16
@@ -143,16 +179,16 @@ type VLessOutboundConfig struct {
 func (c *VLessOutboundConfig) Build() (proto.Message, error) {
 	config := new(outbound.Config)
 
-	if len(c.Vnext) == 0 {
-		return nil, errors.New(`VLESS settings: "vnext" is empty`)
+	if len(c.Vnext) != 1 {
+		return nil, errors.New(`VLESS settings: "vnext" should have one and only one member`)
 	}
 	config.Vnext = make([]*protocol.ServerEndpoint, len(c.Vnext))
 	for idx, rec := range c.Vnext {
 		if rec.Address == nil {
 			return nil, errors.New(`VLESS vnext: "address" is not set`)
 		}
-		if len(rec.Users) == 0 {
-			return nil, errors.New(`VLESS vnext: "users" is empty`)
+		if len(rec.Users) != 1 {
+			return nil, errors.New(`VLESS vnext: "users" should have one and only one member`)
 		}
 		spec := &protocol.ServerEndpoint{
 			Address: rec.Address.Build(),
@@ -181,8 +217,39 @@ func (c *VLessOutboundConfig) Build() (proto.Message, error) {
 				return nil, errors.New(`VLESS users: "flow" doesn't support "` + account.Flow + `" in this version`)
 			}
 
-			if account.Encryption != "none" {
-				return nil, errors.New(`VLESS users: please add/set "encryption":"none" for every user`)
+			if !func() bool {
+				s := strings.Split(account.Encryption, ".")
+				if len(s) < 4 || s[0] != "mlkem768x25519plus" {
+					return false
+				}
+				switch s[1] {
+				case "native":
+				case "xorpub":
+					account.XorMode = 1
+				case "random":
+					account.XorMode = 2
+				default:
+					return false
+				}
+				switch s[2] {
+				case "1rtt":
+				case "0rtt":
+					account.Seconds = 1
+				default:
+					return false
+				}
+				for i := 3; i < len(s); i++ {
+					if b, _ := base64.RawURLEncoding.DecodeString(s[i]); len(b) != 32 && len(b) != 1184 {
+						return false
+					}
+				}
+				account.Encryption = account.Encryption[27+len(s[2]):]
+				return true
+			}() && account.Encryption != "none" {
+				if account.Encryption == "" {
+					return nil, errors.New(`VLESS users: please add/set "encryption":"none" for every user`)
+				}
+				return nil, errors.New(`VLESS users: unsupported "encryption": ` + account.Encryption)
 			}
 
 			user.Account = serial.ToTypedMessage(account)

main/commands/all/commands.go

@@ -17,5 +17,6 @@ func init() {
 		cmdX25519,
 		cmdWG,
 		cmdMLDSA65,
+		cmdMLKEM768,
 	)
 }

main/commands/all/curve25519.go

@@ -1,17 +1,15 @@
 package all
 
 import (
+	"crypto/ecdh"
 	"crypto/rand"
 	"encoding/base64"
 	"fmt"
 
-	"golang.org/x/crypto/curve25519"
+	"lukechampine.com/blake3"
 )
 
 func Curve25519Genkey(StdEncoding bool, input_base64 string) {
-	var output string
-	var err error
-	var privateKey, publicKey []byte
 	var encoding *base64.Encoding
 	if *input_stdEncoding || StdEncoding {
 		encoding = base64.StdEncoding
@@ -19,40 +17,35 @@ func Curve25519Genkey(StdEncoding bool, input_base64 string) {
 		encoding = base64.RawURLEncoding
 	}
 
+	var privateKey []byte
 	if len(input_base64) > 0 {
-		privateKey, err = encoding.DecodeString(input_base64)
-		if err != nil {
-			output = err.Error()
-			goto out
-		}
-		if len(privateKey) != curve25519.ScalarSize {
-			output = "Invalid length of private key."
-			goto out
+		privateKey, _ = encoding.DecodeString(input_base64)
+		if len(privateKey) != 32 {
+			fmt.Println("Invalid length of X25519 private key.")
+			return
 		}
 	}
-
 	if privateKey == nil {
-		privateKey = make([]byte, curve25519.ScalarSize)
-		if _, err = rand.Read(privateKey); err != nil {
-			output = err.Error()
-			goto out
-		}
+		privateKey = make([]byte, 32)
+		rand.Read(privateKey)
 	}
 
 	// Modify random bytes using algorithm described at:
-	// https://cr.yp.to/ecdh.html.
+	// https://cr.yp.to/ecdh.html
+	// (Just to make sure printing the real private key)
 	privateKey[0] &= 248
 	privateKey[31] &= 127
 	privateKey[31] |= 64
 
-	if publicKey, err = curve25519.X25519(privateKey, curve25519.Basepoint); err != nil {
-		output = err.Error()
-		goto out
+	key, err := ecdh.X25519().NewPrivateKey(privateKey)
+	if err != nil {
+		fmt.Println(err.Error())
+		return
 	}
-
-	output = fmt.Sprintf("Private key: %v\nPublic key: %v",
+	password := key.PublicKey().Bytes()
+	hash32 := blake3.Sum256(password)
+	fmt.Printf("PrivateKey: %v\nPassword: %v\nHash32: %v",
 		encoding.EncodeToString(privateKey),
-		encoding.EncodeToString(publicKey))
-out:
-	fmt.Println(output)
+		encoding.EncodeToString(password),
+		encoding.EncodeToString(hash32[:]))
 }

main/commands/all/mldsa65.go

@@ -11,9 +11,9 @@ import (
 
 var cmdMLDSA65 = &base.Command{
 	UsageLine: `{{.Exec}} mldsa65 [-i "seed (base64.RawURLEncoding)"]`,
-	Short:     `Generate key pair for ML-DSA-65 post-quantum signature`,
+	Short:     `Generate key pair for ML-DSA-65 post-quantum signature (REALITY)`,
 	Long: `
-Generate key pair for ML-DSA-65 post-quantum signature.
+Generate key pair for ML-DSA-65 post-quantum signature (REALITY).
 
 Random: {{.Exec}} mldsa65
 
@@ -25,12 +25,16 @@ func init() {
 	cmdMLDSA65.Run = executeMLDSA65 // break init loop
 }
 
-var input_seed = cmdMLDSA65.Flag.String("i", "", "")
+var input_mldsa65 = cmdMLDSA65.Flag.String("i", "", "")
 
 func executeMLDSA65(cmd *base.Command, args []string) {
 	var seed [32]byte
-	if len(*input_seed) > 0 {
-		s, _ := base64.RawURLEncoding.DecodeString(*input_seed)
+	if len(*input_mldsa65) > 0 {
+		s, _ := base64.RawURLEncoding.DecodeString(*input_mldsa65)
+		if len(s) != 32 {
+			fmt.Println("Invalid length of ML-DSA-65 seed.")
+			return
+		}
 		seed = [32]byte(s)
 	} else {
 		rand.Read(seed[:])

main/commands/all/mlkem768.go

@@ -0,0 +1,50 @@
+package all
+
+import (
+	"crypto/mlkem"
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+
+	"github.com/xtls/xray-core/main/commands/base"
+	"lukechampine.com/blake3"
+)
+
+var cmdMLKEM768 = &base.Command{
+	UsageLine: `{{.Exec}} mlkem768 [-i "seed (base64.RawURLEncoding)"]`,
+	Short:     `Generate key pair for ML-KEM-768 post-quantum key exchange (VLESS)`,
+	Long: `
+Generate key pair for ML-KEM-768 post-quantum key exchange (VLESS).
+
+Random: {{.Exec}} mlkem768
+
+From seed: {{.Exec}} mlkem768 -i "seed (base64.RawURLEncoding)"
+`,
+}
+
+func init() {
+	cmdMLKEM768.Run = executeMLKEM768 // break init loop
+}
+
+var input_mlkem768 = cmdMLKEM768.Flag.String("i", "", "")
+
+func executeMLKEM768(cmd *base.Command, args []string) {
+	var seed [64]byte
+	if len(*input_mlkem768) > 0 {
+		s, _ := base64.RawURLEncoding.DecodeString(*input_mlkem768)
+		if len(s) != 64 {
+			fmt.Println("Invalid length of ML-KEM-768 seed.")
+			return
+		}
+		seed = [64]byte(s)
+	} else {
+		rand.Read(seed[:])
+	}
+	key, _ := mlkem.NewDecapsulationKey768(seed[:])
+	client := key.EncapsulationKey().Bytes()
+	hash32 := blake3.Sum256(client)
+	fmt.Printf("Seed: %v\nClient: %v\nHash32: %v",
+		base64.RawURLEncoding.EncodeToString(seed[:]),
+		base64.RawURLEncoding.EncodeToString(client),
+		base64.RawURLEncoding.EncodeToString(hash32[:]))
+}

main/commands/all/uuid.go

@@ -9,9 +9,9 @@ import (
 
 var cmdUUID = &base.Command{
 	UsageLine: `{{.Exec}} uuid [-i "example"]`,
-	Short:     `Generate UUIDv4 or UUIDv5`,
+	Short:     `Generate UUIDv4 or UUIDv5 (VLESS)`,
 	Long: `
-Generate UUIDv4 or UUIDv5.
+Generate UUIDv4 or UUIDv5 (VLESS).
 
 UUIDv4 (random): {{.Exec}} uuid
 

main/commands/all/wg.go

@@ -6,9 +6,9 @@ import (
 
 var cmdWG = &base.Command{
 	UsageLine: `{{.Exec}} wg [-i "private key (base64.StdEncoding)"]`,
-	Short:     `Generate key pair for wireguard key exchange`,
+	Short:     `Generate key pair for X25519 key exchange (WireGuard)`,
 	Long: `
-Generate key pair for wireguard key exchange.
+Generate key pair for X25519 key exchange (WireGuard).
 
 Random: {{.Exec}} wg
 

main/commands/all/x25519.go

@@ -6,9 +6,9 @@ import (
 
 var cmdX25519 = &base.Command{
 	UsageLine: `{{.Exec}} x25519 [-i "private key (base64.RawURLEncoding)"] [--std-encoding]`,
-	Short:     `Generate key pair for x25519 key exchange`,
+	Short:     `Generate key pair for X25519 key exchange (VLESS, REALITY)`,
 	Long: `
-Generate key pair for x25519 key exchange.
+Generate key pair for X25519 key exchange (VLESS, REALITY).
 
 Random: {{.Exec}} x25519
 

proxy/freedom/config.pb.go

@@ -150,6 +150,8 @@ type Fragment struct {
 	LengthMax   uint64 `protobuf:"varint,4,opt,name=length_max,json=lengthMax,proto3" json:"length_max,omitempty"`
 	IntervalMin uint64 `protobuf:"varint,5,opt,name=interval_min,json=intervalMin,proto3" json:"interval_min,omitempty"`
 	IntervalMax uint64 `protobuf:"varint,6,opt,name=interval_max,json=intervalMax,proto3" json:"interval_max,omitempty"`
+	MaxSplitMin uint64 `protobuf:"varint,7,opt,name=max_split_min,json=maxSplitMin,proto3" json:"max_split_min,omitempty"`
+	MaxSplitMax uint64 `protobuf:"varint,8,opt,name=max_split_max,json=maxSplitMax,proto3" json:"max_split_max,omitempty"`
 }
 
 func (x *Fragment) Reset() {
@@ -224,6 +226,20 @@ func (x *Fragment) GetIntervalMax() uint64 {
 	return 0
 }
 
+func (x *Fragment) GetMaxSplitMin() uint64 {
+	if x != nil {
+		return x.MaxSplitMin
+	}
+	return 0
+}
+
+func (x *Fragment) GetMaxSplitMax() uint64 {
+	if x != nil {
+		return x.MaxSplitMax
+	}
+	return 0
+}
+
 type Noise struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -234,6 +250,7 @@ type Noise struct {
 	DelayMin  uint64 `protobuf:"varint,3,opt,name=delay_min,json=delayMin,proto3" json:"delay_min,omitempty"`
 	DelayMax  uint64 `protobuf:"varint,4,opt,name=delay_max,json=delayMax,proto3" json:"delay_max,omitempty"`
 	Packet    []byte `protobuf:"bytes,5,opt,name=packet,proto3" json:"packet,omitempty"`
+	ApplyTo   string `protobuf:"bytes,6,opt,name=apply_to,json=applyTo,proto3" json:"apply_to,omitempty"`
 }
 
 func (x *Noise) Reset() {
@@ -301,6 +318,13 @@ func (x *Noise) GetPacket() []byte {
 	return nil
 }
 
+func (x *Noise) GetApplyTo() string {
+	if x != nil {
+		return x.ApplyTo
+	}
+	return ""
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -399,7 +423,7 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
 	0x72, 0x76, 0x65, 0x72, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61,
 	0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f,
 	0x6c, 0x2e, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74,
-	0x52, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x22, 0xd0, 0x01, 0x0a, 0x08, 0x46, 0x72, 0x61,
+	0x52, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x22, 0x98, 0x02, 0x0a, 0x08, 0x46, 0x72, 0x61,
 	0x67, 0x6d, 0x65, 0x6e, 0x74, 0x12, 0x21, 0x0a, 0x0c, 0x70, 0x61, 0x63, 0x6b, 0x65, 0x74, 0x73,
 	0x5f, 0x66, 0x72, 0x6f, 0x6d, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x0b, 0x70, 0x61, 0x63,
 	0x6b, 0x65, 0x74, 0x73, 0x46, 0x72, 0x6f, 0x6d, 0x12, 0x1d, 0x0a, 0x0a, 0x70, 0x61, 0x63, 0x6b,
@@ -412,57 +436,63 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
 	0x6c, 0x5f, 0x6d, 0x69, 0x6e, 0x18, 0x05, 0x20, 0x01, 0x28, 0x04, 0x52, 0x0b, 0x69, 0x6e, 0x74,
 	0x65, 0x72, 0x76, 0x61, 0x6c, 0x4d, 0x69, 0x6e, 0x12, 0x21, 0x0a, 0x0c, 0x69, 0x6e, 0x74, 0x65,
 	0x72, 0x76, 0x61, 0x6c, 0x5f, 0x6d, 0x61, 0x78, 0x18, 0x06, 0x20, 0x01, 0x28, 0x04, 0x52, 0x0b,
-	0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x4d, 0x61, 0x78, 0x22, 0x97, 0x01, 0x0a, 0x05,
-	0x4e, 0x6f, 0x69, 0x73, 0x65, 0x12, 0x1d, 0x0a, 0x0a, 0x6c, 0x65, 0x6e, 0x67, 0x74, 0x68, 0x5f,
-	0x6d, 0x69, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x6c, 0x65, 0x6e, 0x67, 0x74,
-	0x68, 0x4d, 0x69, 0x6e, 0x12, 0x1d, 0x0a, 0x0a, 0x6c, 0x65, 0x6e, 0x67, 0x74, 0x68, 0x5f, 0x6d,
-	0x61, 0x78, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x6c, 0x65, 0x6e, 0x67, 0x74, 0x68,
-	0x4d, 0x61, 0x78, 0x12, 0x1b, 0x0a, 0x09, 0x64, 0x65, 0x6c, 0x61, 0x79, 0x5f, 0x6d, 0x69, 0x6e,
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 }
 
 var (

proxy/freedom/config.proto

@@ -19,6 +19,8 @@ message Fragment {
   uint64 length_max = 4;
   uint64 interval_min = 5;
   uint64 interval_max = 6;
+  uint64 max_split_min = 7;
+  uint64 max_split_max = 8;
 }
 message Noise {
   uint64 length_min = 1;
@@ -26,6 +28,7 @@ message Noise {
   uint64 delay_min = 3;
   uint64 delay_max = 4;
   bytes packet = 5;
+  string apply_to = 6;
 }
 
 message Config {

proxy/freedom/freedom.go

@@ -194,7 +194,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		if destination.Network == net.Network_TCP {
 			if h.config.Fragment != nil {
 				errors.LogDebug(ctx, "FRAGMENT", h.config.Fragment.PacketsFrom, h.config.Fragment.PacketsTo, h.config.Fragment.LengthMin, h.config.Fragment.LengthMax,
-					h.config.Fragment.IntervalMin, h.config.Fragment.IntervalMax)
+					h.config.Fragment.IntervalMin, h.config.Fragment.IntervalMax, h.config.Fragment.MaxSplitMin, h.config.Fragment.MaxSplitMax)
 				writer = buf.NewWriter(&FragmentWriter{
 					fragment: h.config.Fragment,
 					writer:   conn,
@@ -211,6 +211,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 					noises:      h.config.Noises,
 					firstWrite:  true,
 					UDPOverride: UDPOverride,
+					remoteAddr:  net.DestinationFromAddr(conn.RemoteAddr()).Address,
 				}
 			}
 		}
@@ -289,14 +290,13 @@ func NewPacketReader(conn net.Conn, UDPOverride net.Destination, DialDest net.De
 		if UDPOverride.Address != nil || UDPOverride.Port != 0 {
 			isOverridden = true
 		}
-		changedAddress, _, _ := net.SplitHostPort(conn.RemoteAddr().String())
 
 		return &PacketReader{
 			PacketConnWrapper: c,
 			Counter:           counter,
 			IsOverridden:      isOverridden,
 			InitUnchangedAddr: DialDest.Address,
-			InitChangedAddr:   net.ParseAddress(changedAddress),
+			InitChangedAddr:   net.DestinationFromAddr(conn.RemoteAddr()).Address,
 		}
 	}
 	return &buf.PacketReader{Reader: conn}
@@ -354,8 +354,7 @@ func NewPacketWriter(conn net.Conn, h *Handler, ctx context.Context, UDPOverride
 		// check this behavior and add it to map
 		resolvedUDPAddr := utils.NewTypedSyncMap[string, net.Address]()
 		if DialDest.Address.Family().IsDomain() {
-			RemoteAddress, _, _ := net.SplitHostPort(conn.RemoteAddr().String())
-			resolvedUDPAddr.Store(DialDest.Address.String(), net.ParseAddress(RemoteAddress))
+			resolvedUDPAddr.Store(DialDest.Address.Domain(), net.DestinationFromAddr(conn.RemoteAddr()).Address)
 		}
 		return &PacketWriter{
 			PacketConnWrapper: c,
@@ -456,6 +455,7 @@ type NoisePacketWriter struct {
 	noises      []*Noise
 	firstWrite  bool
 	UDPOverride net.Destination
+	remoteAddr  net.Address
 }
 
 // MultiBuffer writer with Noise before first packet
@@ -468,8 +468,24 @@ func (w *NoisePacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 		}
 		var noise []byte
 		var err error
+		if w.remoteAddr.Family().IsDomain() {
+			panic("impossible, remoteAddr is always IP")
+		}
 		for _, n := range w.noises {
-			//User input string or base64 encoded string
+			switch n.ApplyTo {
+			case "ipv4":
+				if w.remoteAddr.Family().IsIPv6() {
+					continue
+				}
+			case "ipv6":
+				if w.remoteAddr.Family().IsIPv4() {
+					continue
+				}
+			case "ip":
+			default:
+				panic("unreachable, applyTo is ip/ipv4/ipv6")
+			}
+			//User input string or base64 encoded string or hex string
 			if n.Packet != nil {
 				noise = n.Packet
 			} else {
@@ -509,23 +525,29 @@ func (f *FragmentWriter) Write(b []byte) (int, error) {
 			return f.writer.Write(b)
 		}
 		data := b[5:recordLen]
-		buf := make([]byte, 1024)
+		buff := make([]byte, 2048)
 		var hello []byte
+		maxSplit := crypto.RandBetween(int64(f.fragment.MaxSplitMin), int64(f.fragment.MaxSplitMax))
+		var splitNum int64
 		for from := 0; ; {
 			to := from + int(crypto.RandBetween(int64(f.fragment.LengthMin), int64(f.fragment.LengthMax)))
-			if to > len(data) {
+			splitNum++
+			if to > len(data) || (maxSplit > 0 && splitNum >= maxSplit) {
 				to = len(data)
 			}
-			copy(buf[:3], b)
-			copy(buf[5:], data[from:to])
 			l := to - from
+			if 5+l > len(buff) {
+				buff = make([]byte, 5+l)
+			}
+			copy(buff[:3], b)
+			copy(buff[5:], data[from:to])
 			from = to
-			buf[3] = byte(l >> 8)
-			buf[4] = byte(l)
+			buff[3] = byte(l >> 8)
+			buff[4] = byte(l)
 			if f.fragment.IntervalMax == 0 { // combine fragmented tlshello if interval is 0
-				hello = append(hello, buf[:5+l]...)
+				hello = append(hello, buff[:5+l]...)
 			} else {
-				_, err := f.writer.Write(buf[:5+l])
+				_, err := f.writer.Write(buff[:5+l])
 				time.Sleep(time.Duration(crypto.RandBetween(int64(f.fragment.IntervalMin), int64(f.fragment.IntervalMax))) * time.Millisecond)
 				if err != nil {
 					return 0, err
@@ -552,17 +574,20 @@ func (f *FragmentWriter) Write(b []byte) (int, error) {
 	if f.fragment.PacketsFrom != 0 && (f.count < f.fragment.PacketsFrom || f.count > f.fragment.PacketsTo) {
 		return f.writer.Write(b)
 	}
+	maxSplit := crypto.RandBetween(int64(f.fragment.MaxSplitMin), int64(f.fragment.MaxSplitMax))
+	var splitNum int64
 	for from := 0; ; {
 		to := from + int(crypto.RandBetween(int64(f.fragment.LengthMin), int64(f.fragment.LengthMax)))
-		if to > len(b) {
+		splitNum++
+		if to > len(b) || (maxSplit > 0 && splitNum >= maxSplit) {
 			to = len(b)
 		}
 		n, err := f.writer.Write(b[from:to])
 		from += n
-		time.Sleep(time.Duration(crypto.RandBetween(int64(f.fragment.IntervalMin), int64(f.fragment.IntervalMax))) * time.Millisecond)
 		if err != nil {
 			return from, err
 		}
+		time.Sleep(time.Duration(crypto.RandBetween(int64(f.fragment.IntervalMin), int64(f.fragment.IntervalMax))) * time.Millisecond)
 		if from >= len(b) {
 			return from, nil
 		}

proxy/proxy.go

@@ -25,6 +25,7 @@ import (
 	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/features/stats"
+	"github.com/xtls/xray-core/proxy/vless/encryption"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/reality"
@@ -524,24 +525,33 @@ func XtlsFilterTls(buffer buf.MultiBuffer, trafficState *TrafficState, ctx conte
 	}
 }
 
-// UnwrapRawConn support unwrap stats, tls, utls, reality, proxyproto, uds-wrapper conn and get raw tcp/uds conn from it
+// UnwrapRawConn support unwrap encryption, stats, tls, utls, reality, proxyproto, uds-wrapper conn and get raw tcp/uds conn from it
 func UnwrapRawConn(conn net.Conn) (net.Conn, stats.Counter, stats.Counter) {
 	var readCounter, writerCounter stats.Counter
 	if conn != nil {
-		statConn, ok := conn.(*stat.CounterConnection)
-		if ok {
+		isEncryption := false
+		if commonConn, ok := conn.(*encryption.CommonConn); ok {
+			conn = commonConn.Conn
+			isEncryption = true
+		}
+		if xorConn, ok := conn.(*encryption.XorConn); ok {
+			return xorConn, nil, nil // full-random xorConn should not be penetrated
+		}
+		if statConn, ok := conn.(*stat.CounterConnection); ok {
 			conn = statConn.Connection
 			readCounter = statConn.ReadCounter
 			writerCounter = statConn.WriteCounter
 		}
-		if xc, ok := conn.(*tls.Conn); ok {
-			conn = xc.NetConn()
-		} else if utlsConn, ok := conn.(*tls.UConn); ok {
-			conn = utlsConn.NetConn()
-		} else if realityConn, ok := conn.(*reality.Conn); ok {
-			conn = realityConn.NetConn()
-		} else if realityUConn, ok := conn.(*reality.UConn); ok {
-			conn = realityUConn.NetConn()
+		if !isEncryption { // avoids double penetration
+			if xc, ok := conn.(*tls.Conn); ok {
+				conn = xc.NetConn()
+			} else if utlsConn, ok := conn.(*tls.UConn); ok {
+				conn = utlsConn.NetConn()
+			} else if realityConn, ok := conn.(*reality.Conn); ok {
+				conn = realityConn.NetConn()
+			} else if realityUConn, ok := conn.(*reality.UConn); ok {
+				conn = realityUConn.NetConn()
+			}
 		}
 		if pc, ok := conn.(*proxyproto.Conn); ok {
 			conn = pc.Raw()
@@ -632,9 +642,20 @@ func CopyRawConnIfExist(ctx context.Context, readerConn net.Conn, writerConn net
 }
 
 func readV(ctx context.Context, reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, readCounter stats.Counter) error {
-	errors.LogInfo(ctx, "CopyRawConn readv")
+	errors.LogInfo(ctx, "CopyRawConn (maybe) readv")
 	if err := buf.Copy(reader, writer, buf.UpdateActivity(timer), buf.AddToStatCounter(readCounter)); err != nil {
 		return errors.New("failed to process response").Base(err)
 	}
 	return nil
 }
+
+func IsRAWTransport(conn stat.Connection) bool {
+	iConn := conn
+	if statConn, ok := iConn.(*stat.CounterConnection); ok {
+		iConn = statConn.Connection
+	}
+	_, ok1 := iConn.(*proxyproto.Conn)
+	_, ok2 := iConn.(*net.TCPConn)
+	_, ok3 := iConn.(*internet.UnixConnWrapper)
+	return ok1 || ok2 || ok3
+}

proxy/vless/account.go

@@ -18,6 +18,8 @@ func (a *Account) AsAccount() (protocol.Account, error) {
 		ID:         protocol.NewID(id),
 		Flow:       a.Flow,       // needs parser here?
 		Encryption: a.Encryption, // needs parser here?
+		XorMode:    a.XorMode,
+		Seconds:    a.Seconds,
 	}, nil
 }
 
@@ -27,8 +29,10 @@ type MemoryAccount struct {
 	ID *protocol.ID
 	// Flow of the account. May be "xtls-rprx-vision".
 	Flow string
-	// Encryption of the account. Used for client connections, and only accepts "none" for now.
+
 	Encryption string
+	XorMode    uint32
+	Seconds    uint32
 }
 
 // Equals implements protocol.Account.Equals().
@@ -45,5 +49,7 @@ func (a *MemoryAccount) ToProto() proto.Message {
 		Id:         a.ID.String(),
 		Flow:       a.Flow,
 		Encryption: a.Encryption,
+		XorMode:    a.XorMode,
+		Seconds:    a.Seconds,
 	}
 }

proxy/vless/account.pb.go

@@ -28,9 +28,10 @@ type Account struct {
 	// ID of the account, in the form of a UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
 	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	// Flow settings. May be "xtls-rprx-vision".
-	Flow string `protobuf:"bytes,2,opt,name=flow,proto3" json:"flow,omitempty"`
-	// Encryption settings. Only applies to client side, and only accepts "none" for now.
+	Flow       string `protobuf:"bytes,2,opt,name=flow,proto3" json:"flow,omitempty"`
 	Encryption string `protobuf:"bytes,3,opt,name=encryption,proto3" json:"encryption,omitempty"`
+	XorMode    uint32 `protobuf:"varint,4,opt,name=xorMode,proto3" json:"xorMode,omitempty"`
+	Seconds    uint32 `protobuf:"varint,5,opt,name=seconds,proto3" json:"seconds,omitempty"`
 }
 
 func (x *Account) Reset() {
@@ -84,23 +85,40 @@ func (x *Account) GetEncryption() string {
 	return ""
 }
 
+func (x *Account) GetXorMode() uint32 {
+	if x != nil {
+		return x.XorMode
+	}
+	return 0
+}
+
+func (x *Account) GetSeconds() uint32 {
+	if x != nil {
+		return x.Seconds
+	}
+	return 0
+}
+
 var File_proxy_vless_account_proto protoreflect.FileDescriptor
 
 var file_proxy_vless_account_proto_rawDesc = []byte{
 	0x0a, 0x19, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f, 0x61, 0x63,
 	0x63, 0x6f, 0x75, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x10, 0x78, 0x72, 0x61,
-	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x22, 0x4d, 0x0a,
-	0x07, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01,
-	0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x66, 0x6c, 0x6f, 0x77,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x66, 0x6c, 0x6f, 0x77, 0x12, 0x1e, 0x0a, 0x0a,
-	0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09,
-	0x52, 0x0a, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x42, 0x52, 0x0a, 0x14,
-	0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76,
-	0x6c, 0x65, 0x73, 0x73, 0x50, 0x01, 0x5a, 0x25, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
-	0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72,
-	0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0xaa, 0x02, 0x10,
-	0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56, 0x6c, 0x65, 0x73, 0x73,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x22, 0x81, 0x01,
+	0x0a, 0x07, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x66, 0x6c, 0x6f,
+	0x77, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x66, 0x6c, 0x6f, 0x77, 0x12, 0x1e, 0x0a,
+	0x0a, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28,
+	0x09, 0x52, 0x0a, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x18, 0x0a,
+	0x07, 0x78, 0x6f, 0x72, 0x4d, 0x6f, 0x64, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07,
+	0x78, 0x6f, 0x72, 0x4d, 0x6f, 0x64, 0x65, 0x12, 0x18, 0x0a, 0x07, 0x73, 0x65, 0x63, 0x6f, 0x6e,
+	0x64, 0x73, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64,
+	0x73, 0x42, 0x52, 0x0a, 0x14, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72,
+	0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x50, 0x01, 0x5a, 0x25, 0x67, 0x69, 0x74,
+	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61,
+	0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65,
+	0x73, 0x73, 0xaa, 0x02, 0x10, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e,
+	0x56, 0x6c, 0x65, 0x73, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

proxy/vless/account.proto

@@ -11,6 +11,8 @@ message Account {
   string id = 1;
   // Flow settings. May be "xtls-rprx-vision".
   string flow = 2;
-  // Encryption settings. Only applies to client side, and only accepts "none" for now.
+
   string encryption = 3;
+  uint32 xorMode = 4;
+  uint32 seconds = 5;
 }

proxy/vless/encoding/encoding.go

@@ -172,7 +172,7 @@ func DecodeResponseHeader(reader io.Reader, request *protocol.RequestHeader) (*A
 }
 
 // XtlsRead filter and read xtls protocol
-func XtlsRead(reader buf.Reader, writer buf.Writer, timer *signal.ActivityTimer, conn net.Conn, input *bytes.Reader, rawInput *bytes.Buffer, trafficState *proxy.TrafficState, ob *session.Outbound, isUplink bool, ctx context.Context) error {
+func XtlsRead(reader buf.Reader, writer buf.Writer, timer *signal.ActivityTimer, conn net.Conn, peerCache *[]byte, input *bytes.Reader, rawInput *bytes.Buffer, trafficState *proxy.TrafficState, ob *session.Outbound, isUplink bool, ctx context.Context) error {
 	err := func() error {
 		for {
 			if isUplink && trafficState.Inbound.UplinkReaderDirectCopy || !isUplink && trafficState.Outbound.DownlinkReaderDirectCopy {
@@ -194,15 +194,21 @@ func XtlsRead(reader buf.Reader, writer buf.Writer, timer *signal.ActivityTimer,
 			if !buffer.IsEmpty() {
 				timer.Update()
 				if isUplink && trafficState.Inbound.UplinkReaderDirectCopy || !isUplink && trafficState.Outbound.DownlinkReaderDirectCopy {
-					// XTLS Vision processes struct TLS Conn's input and rawInput
-					if inputBuffer, err := buf.ReadFrom(input); err == nil {
-						if !inputBuffer.IsEmpty() {
-							buffer, _ = buf.MergeMulti(buffer, inputBuffer)
+					// XTLS Vision processes struct Encryption Conn's peerCache or TLS Conn's input and rawInput
+					if peerCache != nil {
+						if len(*peerCache) != 0 {
+							buffer = buf.MergeBytes(buffer, *peerCache)
 						}
-					}
-					if rawInputBuffer, err := buf.ReadFrom(rawInput); err == nil {
-						if !rawInputBuffer.IsEmpty() {
-							buffer, _ = buf.MergeMulti(buffer, rawInputBuffer)
+					} else {
+						if inputBuffer, err := buf.ReadFrom(input); err == nil {
+							if !inputBuffer.IsEmpty() {
+								buffer, _ = buf.MergeMulti(buffer, inputBuffer)
+							}
+						}
+						if rawInputBuffer, err := buf.ReadFrom(rawInput); err == nil {
+							if !rawInputBuffer.IsEmpty() {
+								buffer, _ = buf.MergeMulti(buffer, rawInputBuffer)
+							}
 						}
 					}
 				}

proxy/vless/encryption/client.go

@@ -0,0 +1,216 @@
+package encryption
+
+import (
+	"crypto/cipher"
+	"crypto/ecdh"
+	"crypto/mlkem"
+	"crypto/rand"
+	"io"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/common/crypto"
+	"github.com/xtls/xray-core/common/errors"
+	"lukechampine.com/blake3"
+)
+
+type ClientInstance struct {
+	NfsPKeys      []any
+	NfsPKeysBytes [][]byte
+	Hash32s       [][32]byte
+	RelaysLength  int
+	XorMode       uint32
+	Seconds       uint32
+
+	RWLock sync.RWMutex
+	Expire time.Time
+	PfsKey []byte
+	Ticket []byte
+}
+
+func (i *ClientInstance) Init(nfsPKeysBytes [][]byte, xorMode, seconds uint32) (err error) {
+	if i.NfsPKeys != nil {
+		err = errors.New("already initialized")
+		return
+	}
+	l := len(nfsPKeysBytes)
+	if l == 0 {
+		err = errors.New("empty nfsPKeysBytes")
+		return
+	}
+	i.NfsPKeys = make([]any, l)
+	i.NfsPKeysBytes = nfsPKeysBytes
+	i.Hash32s = make([][32]byte, l)
+	for j, k := range nfsPKeysBytes {
+		if len(k) == 32 {
+			if i.NfsPKeys[j], err = ecdh.X25519().NewPublicKey(k); err != nil {
+				return
+			}
+			i.RelaysLength += 32 + 32
+		} else {
+			if i.NfsPKeys[j], err = mlkem.NewEncapsulationKey768(k); err != nil {
+				return
+			}
+			i.RelaysLength += 1088 + 32
+		}
+		i.Hash32s[j] = blake3.Sum256(k)
+	}
+	i.RelaysLength -= 32
+	i.XorMode = xorMode
+	i.Seconds = seconds
+	return
+}
+
+func (i *ClientInstance) Handshake(conn net.Conn) (*CommonConn, error) {
+	if i.NfsPKeys == nil {
+		return nil, errors.New("uninitialized")
+	}
+	c := &CommonConn{Conn: conn}
+
+	ivAndRealysLength := 16 + i.RelaysLength
+	pfsKeyExchangeLength := 18 + 1184 + 32 + 16
+	paddingLength := int(crypto.RandBetween(100, 1000))
+	clientHello := make([]byte, ivAndRealysLength+pfsKeyExchangeLength+paddingLength)
+
+	iv := clientHello[:16]
+	rand.Read(iv)
+	relays := clientHello[16:ivAndRealysLength]
+	var nfsPublicKey, nfsKey []byte
+	var lastCTR cipher.Stream
+	for j, k := range i.NfsPKeys {
+		var index = 32
+		if k, ok := k.(*ecdh.PublicKey); ok {
+			privateKey, _ := ecdh.X25519().GenerateKey(rand.Reader)
+			nfsPublicKey = privateKey.PublicKey().Bytes()
+			copy(relays, nfsPublicKey)
+			var err error
+			nfsKey, err = privateKey.ECDH(k)
+			if err != nil {
+				return nil, err
+			}
+		}
+		if k, ok := k.(*mlkem.EncapsulationKey768); ok {
+			nfsKey, nfsPublicKey = k.Encapsulate()
+			copy(relays, nfsPublicKey)
+			index = 1088
+		}
+		if i.XorMode > 0 { // this xor can (others can't) be decrypted by client's config, revealing an X25519 public key / ML-KEM-768 ciphertext, but it is not important
+			NewCTR(i.NfsPKeysBytes[j], iv).XORKeyStream(relays, relays[:index]) // make X25519 public key / ML-KEM-768 ciphertext distinguishable from random bytes
+		}
+		if lastCTR != nil {
+			lastCTR.XORKeyStream(relays, relays[:32]) // make this relay irreplaceable
+		}
+		if j == len(i.NfsPKeys)-1 {
+			break
+		}
+		lastCTR = NewCTR(nfsKey, iv)
+		lastCTR.XORKeyStream(relays[index:], i.Hash32s[j+1][:])
+		relays = relays[index+32:]
+	}
+	nfsGCM := NewGCM(nfsPublicKey, nfsKey)
+
+	if i.Seconds > 0 {
+		i.RWLock.RLock()
+		if time.Now().Before(i.Expire) {
+			c.Client = i
+			c.UnitedKey = append(i.PfsKey, nfsKey...)
+			nfsGCM.Seal(clientHello[:ivAndRealysLength], nil, EncodeLength(32), nil)
+			nfsGCM.Seal(clientHello[:ivAndRealysLength+18], nil, i.Ticket, nil)
+			i.RWLock.RUnlock()
+			c.PreWrite = clientHello[:ivAndRealysLength+18+32]
+			c.GCM = NewGCM(clientHello[ivAndRealysLength+18:ivAndRealysLength+18+32], c.UnitedKey)
+			if i.XorMode == 2 {
+				c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, iv), nil, len(c.PreWrite), 32)
+			}
+			return c, nil
+		}
+		i.RWLock.RUnlock()
+	}
+
+	pfsKeyExchange := clientHello[ivAndRealysLength : ivAndRealysLength+pfsKeyExchangeLength]
+	nfsGCM.Seal(pfsKeyExchange[:0], nil, EncodeLength(pfsKeyExchangeLength-18), nil)
+	mlkem768DKey, _ := mlkem.GenerateKey768()
+	x25519SKey, _ := ecdh.X25519().GenerateKey(rand.Reader)
+	pfsPublicKey := append(mlkem768DKey.EncapsulationKey().Bytes(), x25519SKey.PublicKey().Bytes()...)
+	nfsGCM.Seal(pfsKeyExchange[:18], nil, pfsPublicKey, nil)
+
+	padding := clientHello[ivAndRealysLength+pfsKeyExchangeLength:]
+	nfsGCM.Seal(padding[:0], nil, EncodeLength(paddingLength-18), nil)
+	nfsGCM.Seal(padding[:18], nil, padding[18:paddingLength-16], nil)
+
+	if _, err := conn.Write(clientHello); err != nil {
+		return nil, err
+	}
+	// padding can be sent in a fragmented way, to create variable traffic pattern, before VLESS flow takes control
+
+	encryptedLength := make([]byte, 18)
+	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
+		return nil, err
+	}
+	if _, err := nfsGCM.Open(encryptedLength[:0], make([]byte, 12), encryptedLength, nil); err != nil {
+		return nil, err
+	}
+	length := DecodeLength(encryptedLength[:2])
+
+	if length < 1088+32+16 { // server may send more public keys
+		return nil, errors.New("too short length")
+	}
+	encryptedPfsPublicKey := make([]byte, length)
+	if _, err := io.ReadFull(conn, encryptedPfsPublicKey); err != nil {
+		return nil, err
+	}
+	nfsGCM.Open(encryptedPfsPublicKey[:0], MaxNonce, encryptedPfsPublicKey, nil)
+	mlkem768Key, err := mlkem768DKey.Decapsulate(encryptedPfsPublicKey[:1088])
+	if err != nil {
+		return nil, err
+	}
+	peerX25519PKey, err := ecdh.X25519().NewPublicKey(encryptedPfsPublicKey[1088 : 1088+32])
+	if err != nil {
+		return nil, err
+	}
+	x25519Key, err := x25519SKey.ECDH(peerX25519PKey)
+	if err != nil {
+		return nil, err
+	}
+	pfsKey := append(mlkem768Key, x25519Key...)
+	c.UnitedKey = append(pfsKey, nfsKey...)
+	c.GCM = NewGCM(pfsPublicKey, c.UnitedKey)
+	c.PeerGCM = NewGCM(encryptedPfsPublicKey[:1088+32], c.UnitedKey)
+
+	encryptedTicket := make([]byte, 32)
+	if _, err := io.ReadFull(conn, encryptedTicket); err != nil {
+		return nil, err
+	}
+	if _, err := c.PeerGCM.Open(encryptedTicket[:0], nil, encryptedTicket, nil); err != nil {
+		return nil, err
+	}
+	seconds := DecodeLength(encryptedTicket)
+
+	if i.Seconds > 0 && seconds > 0 {
+		i.RWLock.Lock()
+		i.Expire = time.Now().Add(time.Duration(seconds) * time.Second)
+		i.PfsKey = pfsKey
+		i.Ticket = encryptedTicket[:16]
+		i.RWLock.Unlock()
+	}
+
+	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
+		return nil, err
+	}
+	if _, err := c.PeerGCM.Open(encryptedLength[:0], nil, encryptedLength, nil); err != nil {
+		return nil, err
+	}
+	encryptedPadding := make([]byte, DecodeLength(encryptedLength[:2])) // TODO: move to Read()
+	if _, err := io.ReadFull(conn, encryptedPadding); err != nil {
+		return nil, err
+	}
+	if _, err := c.PeerGCM.Open(encryptedPadding[:0], nil, encryptedPadding, nil); err != nil {
+		return nil, err
+	}
+
+	if i.XorMode == 2 {
+		c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, iv), NewCTR(c.UnitedKey, encryptedTicket[:16]), 0, 0)
+	}
+	return c, nil
+}

proxy/vless/encryption/common.go

@@ -0,0 +1,202 @@
+package encryption
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"fmt"
+	"io"
+	"net"
+	"strings"
+	"time"
+
+	"github.com/xtls/xray-core/common/errors"
+	"lukechampine.com/blake3"
+)
+
+type CommonConn struct {
+	net.Conn
+	Client    *ClientInstance
+	UnitedKey []byte
+	PreWrite  []byte
+	GCM       *GCM
+	PeerGCM   *GCM
+	PeerCache []byte
+}
+
+func (c *CommonConn) Write(b []byte) (int, error) {
+	if len(b) == 0 {
+		return 0, nil
+	}
+	var data []byte
+	for n := 0; n < len(b); {
+		b := b[n:]
+		if len(b) > 8192 {
+			b = b[:8192] // for avoiding another copy() in peer's Read()
+		}
+		n += len(b)
+		data = make([]byte, 5+len(b)+16)
+		EncodeHeader(data, len(b)+16)
+		aead := c.GCM
+		if bytes.Equal(c.GCM.Nonce[:], MaxNonce) {
+			aead = nil
+		}
+		c.GCM.Seal(data[:5], nil, b, data[:5])
+		if aead == nil {
+			c.GCM = NewGCM(data[5:], c.UnitedKey)
+		}
+		if c.PreWrite != nil {
+			data = append(c.PreWrite, data...)
+			c.PreWrite = nil
+		}
+		if _, err := c.Conn.Write(data); err != nil {
+			return 0, err
+		}
+	}
+	return len(b), nil
+}
+
+func (c *CommonConn) Read(b []byte) (int, error) {
+	if len(b) == 0 {
+		return 0, nil
+	}
+	if c.PeerGCM == nil { // client's 0-RTT
+		serverRandom := make([]byte, 32)
+		if _, err := io.ReadFull(c.Conn, serverRandom); err != nil {
+			return 0, err
+		}
+		c.PeerGCM = NewGCM(serverRandom, c.UnitedKey)
+		if xorConn, ok := c.Conn.(*XorConn); ok {
+			xorConn.PeerCTR = NewCTR(c.UnitedKey, serverRandom[16:])
+		}
+	}
+	if len(c.PeerCache) != 0 {
+		n := copy(b, c.PeerCache)
+		c.PeerCache = c.PeerCache[n:]
+		return n, nil
+	}
+	h, l, err := ReadAndDecodeHeader(c.Conn) // l: 17~17000
+	if err != nil {
+		if c.Client != nil && strings.HasPrefix(err.Error(), "invalid header: ") { // client's 0-RTT
+			c.Client.RWLock.Lock()
+			if bytes.Equal(c.UnitedKey[:32], c.Client.PfsKey) {
+				c.Client.Expire = time.Now() // expired
+			}
+			c.Client.RWLock.Unlock()
+			return 0, errors.New("new handshake needed")
+		}
+		return 0, err
+	}
+	c.Client = nil
+	peerData := make([]byte, l)
+	if _, err := io.ReadFull(c.Conn, peerData); err != nil {
+		return 0, err
+	}
+	dst := peerData[:l-16]
+	if len(dst) <= len(b) {
+		dst = b[:len(dst)] // avoids another copy()
+	}
+	var peerAEAD *GCM
+	if bytes.Equal(c.PeerGCM.Nonce[:], MaxNonce) {
+		peerAEAD = NewGCM(peerData, c.UnitedKey)
+	}
+	_, err = c.PeerGCM.Open(dst[:0], nil, peerData, h)
+	if peerAEAD != nil {
+		c.PeerGCM = peerAEAD
+	}
+	if err != nil {
+		return 0, err
+	}
+	if len(dst) > len(b) {
+		c.PeerCache = dst[copy(b, dst):]
+		dst = b // for len(dst)
+	}
+	return len(dst), nil
+}
+
+type GCM struct {
+	cipher.AEAD
+	Nonce [12]byte
+}
+
+func NewGCM(ctx, key []byte) *GCM {
+	k := make([]byte, 32)
+	blake3.DeriveKey(k, string(ctx), key)
+	block, _ := aes.NewCipher(k)
+	aead, _ := cipher.NewGCM(block)
+	return &GCM{AEAD: aead}
+	//chacha20poly1305.New()
+}
+
+func (a *GCM) Seal(dst, nonce, plaintext, additionalData []byte) []byte {
+	if nonce == nil {
+		nonce = IncreaseNonce(a.Nonce[:])
+	}
+	return a.AEAD.Seal(dst, nonce, plaintext, additionalData)
+}
+
+func (a *GCM) Open(dst, nonce, ciphertext, additionalData []byte) ([]byte, error) {
+	if nonce == nil {
+		nonce = IncreaseNonce(a.Nonce[:])
+	}
+	return a.AEAD.Open(dst, nonce, ciphertext, additionalData)
+}
+
+func IncreaseNonce(nonce []byte) []byte {
+	for i := range 12 {
+		nonce[11-i]++
+		if nonce[11-i] != 0 {
+			break
+		}
+	}
+	return nonce
+}
+
+var MaxNonce = bytes.Repeat([]byte{255}, 12)
+
+func EncodeLength(l int) []byte {
+	return []byte{byte(l >> 8), byte(l)}
+}
+
+func DecodeLength(b []byte) int {
+	return int(b[0])<<8 | int(b[1])
+}
+
+func EncodeHeader(h []byte, l int) {
+	h[0] = 23
+	h[1] = 3
+	h[2] = 3
+	h[3] = byte(l >> 8)
+	h[4] = byte(l)
+}
+
+func DecodeHeader(h []byte) (l int, err error) {
+	l = int(h[3])<<8 | int(h[4])
+	if h[0] != 23 || h[1] != 3 || h[2] != 3 {
+		l = 0
+	}
+	if l < 17 || l > 17000 { // TODO: TLSv1.3 max length
+		err = errors.New("invalid header: ", fmt.Sprintf("%v", h[:5])) // DO NOT CHANGE: relied by client's Read()
+	}
+	return
+}
+
+func ReadAndDecodeHeader(conn net.Conn) (h []byte, l int, err error) {
+	h = make([]byte, 5)
+	if _, err = io.ReadFull(conn, h); err != nil {
+		return
+	}
+	l, err = DecodeHeader(h)
+	return
+}
+
+func ReadAndDiscardPaddings(conn net.Conn) (h []byte, l int, err error) {
+	for {
+		if h, l, err = ReadAndDecodeHeader(conn); err != nil {
+			return
+		}
+		if _, err = io.ReadFull(conn, make([]byte, l)); err != nil {
+			return
+		}
+	}
+}

proxy/vless/encryption/server.go

@@ -0,0 +1,281 @@
+package encryption
+
+import (
+	"bytes"
+	"crypto/cipher"
+	"crypto/ecdh"
+	"crypto/mlkem"
+	"crypto/rand"
+	"fmt"
+	"io"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/common/crypto"
+	"github.com/xtls/xray-core/common/errors"
+	"lukechampine.com/blake3"
+)
+
+type ServerSession struct {
+	Expire  time.Time
+	PfsKey  []byte
+	Replays sync.Map
+}
+
+type ServerInstance struct {
+	NfsSKeys      []any
+	NfsPKeysBytes [][]byte
+	Hash32s       [][32]byte
+	RelaysLength  int
+	XorMode       uint32
+	Seconds       uint32
+
+	RWLock   sync.RWMutex
+	Sessions map[[16]byte]*ServerSession
+	Closed   bool
+}
+
+func (i *ServerInstance) Init(nfsSKeysBytes [][]byte, xorMode, seconds uint32) (err error) {
+	if i.NfsSKeys != nil {
+		err = errors.New("already initialized")
+		return
+	}
+	l := len(nfsSKeysBytes)
+	if l == 0 {
+		err = errors.New("empty nfsSKeysBytes")
+		return
+	}
+	i.NfsSKeys = make([]any, l)
+	i.NfsPKeysBytes = make([][]byte, l)
+	i.Hash32s = make([][32]byte, l)
+	for j, k := range nfsSKeysBytes {
+		if len(k) == 32 {
+			if i.NfsSKeys[j], err = ecdh.X25519().NewPrivateKey(k); err != nil {
+				return
+			}
+			i.NfsPKeysBytes[j] = i.NfsSKeys[j].(*ecdh.PrivateKey).PublicKey().Bytes()
+			i.RelaysLength += 32 + 32
+		} else {
+			if i.NfsSKeys[j], err = mlkem.NewDecapsulationKey768(k); err != nil {
+				return
+			}
+			i.NfsPKeysBytes[j] = i.NfsSKeys[j].(*mlkem.DecapsulationKey768).EncapsulationKey().Bytes()
+			i.RelaysLength += 1088 + 32
+		}
+		i.Hash32s[j] = blake3.Sum256(i.NfsPKeysBytes[j])
+	}
+	i.RelaysLength -= 32
+	i.XorMode = xorMode
+	if seconds > 0 {
+		i.Seconds = seconds
+		i.Sessions = make(map[[16]byte]*ServerSession)
+		go func() {
+			for {
+				time.Sleep(time.Minute)
+				i.RWLock.Lock()
+				if i.Closed {
+					i.RWLock.Unlock()
+					return
+				}
+				now := time.Now()
+				for ticket, session := range i.Sessions {
+					if now.After(session.Expire) {
+						delete(i.Sessions, ticket)
+					}
+				}
+				i.RWLock.Unlock()
+			}
+		}()
+	}
+	return
+}
+
+func (i *ServerInstance) Close() (err error) {
+	i.RWLock.Lock()
+	i.Closed = true
+	i.RWLock.Unlock()
+	return
+}
+
+func (i *ServerInstance) Handshake(conn net.Conn) (*CommonConn, error) {
+	if i.NfsSKeys == nil {
+		return nil, errors.New("uninitialized")
+	}
+	c := &CommonConn{Conn: conn}
+
+	ivAndRelays := make([]byte, 16+i.RelaysLength)
+	if _, err := io.ReadFull(conn, ivAndRelays); err != nil {
+		return nil, err
+	}
+	iv := ivAndRelays[:16]
+	relays := ivAndRelays[16:]
+	var nfsPublicKey, nfsKey []byte
+	var lastCTR cipher.Stream
+	for j, k := range i.NfsSKeys {
+		if lastCTR != nil {
+			lastCTR.XORKeyStream(relays, relays[:32]) // recover this relay
+		}
+		var index = 32
+		if _, ok := k.(*mlkem.DecapsulationKey768); ok {
+			index = 1088
+		}
+		if i.XorMode > 0 {
+			NewCTR(i.NfsPKeysBytes[j], iv).XORKeyStream(relays, relays[:index]) // we don't use buggy elligator, because we have PSK :)
+		}
+		nfsPublicKey = relays[:index]
+		if k, ok := k.(*ecdh.PrivateKey); ok {
+			publicKey, err := ecdh.X25519().NewPublicKey(nfsPublicKey)
+			if err != nil {
+				return nil, err
+			}
+			nfsKey, err = k.ECDH(publicKey)
+			if err != nil {
+				return nil, err
+			}
+		}
+		if k, ok := k.(*mlkem.DecapsulationKey768); ok {
+			var err error
+			nfsKey, err = k.Decapsulate(nfsPublicKey)
+			if err != nil {
+				return nil, err
+			}
+		}
+		if j == len(i.NfsSKeys)-1 {
+			break
+		}
+		relays = relays[index:]
+		lastCTR = NewCTR(nfsKey, iv)
+		lastCTR.XORKeyStream(relays, relays[:32])
+		if !bytes.Equal(relays[:32], i.Hash32s[j+1][:]) {
+			return nil, errors.New("unexpected hash32: ", fmt.Sprintf("%v", relays[:32]))
+		}
+		relays = relays[32:]
+	}
+	nfsGCM := NewGCM(nfsPublicKey, nfsKey)
+
+	encryptedLength := make([]byte, 18)
+	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
+		return nil, err
+	}
+	if _, err := nfsGCM.Open(encryptedLength[:0], nil, encryptedLength, nil); err != nil {
+		return nil, err
+	}
+	length := DecodeLength(encryptedLength[:2])
+
+	if length == 32 {
+		if i.Seconds == 0 {
+			return nil, errors.New("0-RTT is not allowed")
+		}
+		encryptedTicket := make([]byte, 32)
+		if _, err := io.ReadFull(conn, encryptedTicket); err != nil {
+			return nil, err
+		}
+		ticket, err := nfsGCM.Open(nil, nil, encryptedTicket, nil)
+		if err != nil {
+			return nil, err
+		}
+		i.RWLock.RLock()
+		s := i.Sessions[[16]byte(ticket)]
+		i.RWLock.RUnlock()
+		if s == nil {
+			noises := make([]byte, crypto.RandBetween(100, 1000))
+			var err error
+			for err == nil {
+				rand.Read(noises)
+				_, err = DecodeHeader(noises)
+			}
+			conn.Write(noises) // make client do new handshake
+			return nil, errors.New("expired ticket")
+		}
+		if _, replay := s.Replays.LoadOrStore([32]byte(encryptedTicket), true); replay {
+			return nil, errors.New("replay detected")
+		}
+		c.UnitedKey = append(s.PfsKey, nfsKey...) // the same key links the upload & download
+		c.PreWrite = make([]byte, 32)             // always trust yourself, not the client
+		rand.Read(c.PreWrite)
+		c.GCM = NewGCM(c.PreWrite, c.UnitedKey)
+		c.PeerGCM = NewGCM(encryptedTicket, c.UnitedKey)
+		if i.XorMode == 2 {
+			c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, c.PreWrite[16:]), NewCTR(c.UnitedKey, iv), 32, 0)
+		}
+		return c, nil
+	}
+
+	if length < 1184+32+16 { // client may send more public keys
+		return nil, errors.New("too short length")
+	}
+	encryptedPfsPublicKey := make([]byte, length)
+	if _, err := io.ReadFull(conn, encryptedPfsPublicKey); err != nil {
+		return nil, err
+	}
+	if _, err := nfsGCM.Open(encryptedPfsPublicKey[:0], nil, encryptedPfsPublicKey, nil); err != nil {
+		return nil, err
+	}
+	mlkem768EKey, err := mlkem.NewEncapsulationKey768(encryptedPfsPublicKey[:1184])
+	if err != nil {
+		return nil, err
+	}
+	mlkem768Key, encapsulatedPfsKey := mlkem768EKey.Encapsulate()
+	peerX25519PKey, err := ecdh.X25519().NewPublicKey(encryptedPfsPublicKey[1184 : 1184+32])
+	if err != nil {
+		return nil, err
+	}
+	x25519SKey, _ := ecdh.X25519().GenerateKey(rand.Reader)
+	x25519Key, err := x25519SKey.ECDH(peerX25519PKey)
+	if err != nil {
+		return nil, err
+	}
+	pfsKey := append(mlkem768Key, x25519Key...)
+	pfsPublicKey := append(encapsulatedPfsKey, x25519SKey.PublicKey().Bytes()...)
+	c.UnitedKey = append(pfsKey, nfsKey...)
+	c.GCM = NewGCM(pfsPublicKey, c.UnitedKey)
+	c.PeerGCM = NewGCM(encryptedPfsPublicKey[:1184+32], c.UnitedKey)
+	ticket := make([]byte, 16)
+	rand.Read(ticket)
+	copy(ticket, EncodeLength(int(i.Seconds*4/5)))
+
+	pfsKeyExchangeLength := 18 + 1088 + 32 + 16
+	encryptedTicketLength := 32
+	paddingLength := int(crypto.RandBetween(100, 1000))
+	serverHello := make([]byte, pfsKeyExchangeLength+encryptedTicketLength+paddingLength)
+	nfsGCM.Seal(serverHello[:0], make([]byte, 12), EncodeLength(pfsKeyExchangeLength-18), nil) // it is safe because our nonce starts from 1
+	nfsGCM.Seal(serverHello[:18], MaxNonce, pfsPublicKey, nil)
+	c.GCM.Seal(serverHello[:pfsKeyExchangeLength], nil, ticket, nil)
+	padding := serverHello[pfsKeyExchangeLength+encryptedTicketLength:]
+	c.GCM.Seal(padding[:0], nil, EncodeLength(paddingLength-18), nil)
+	c.GCM.Seal(padding[:18], nil, padding[18:paddingLength-16], nil)
+
+	if _, err := conn.Write(serverHello); err != nil {
+		return nil, err
+	}
+	// padding can be sent in a fragmented way, to create variable traffic pattern, before VLESS flow takes control
+
+	if i.Seconds > 0 {
+		i.RWLock.Lock()
+		i.Sessions[[16]byte(ticket)] = &ServerSession{
+			Expire: time.Now().Add(time.Duration(i.Seconds) * time.Second),
+			PfsKey: pfsKey,
+		}
+		i.RWLock.Unlock()
+	}
+
+	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
+		return nil, err
+	}
+	if _, err := nfsGCM.Open(encryptedLength[:0], nil, encryptedLength, nil); err != nil {
+		return nil, err
+	}
+	encryptedPadding := make([]byte, DecodeLength(encryptedLength[:2]))
+	if _, err := io.ReadFull(conn, encryptedPadding); err != nil {
+		return nil, err
+	}
+	if _, err := nfsGCM.Open(encryptedPadding[:0], nil, encryptedPadding, nil); err != nil {
+		return nil, err
+	}
+
+	if i.XorMode == 2 {
+		c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, ticket), NewCTR(c.UnitedKey, iv), 0, 0)
+	}
+	return c, nil
+}

proxy/vless/encryption/xor.go

@@ -0,0 +1,93 @@
+package encryption
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"net"
+
+	"lukechampine.com/blake3"
+)
+
+func NewCTR(key, iv []byte) cipher.Stream {
+	k := make([]byte, 32)
+	blake3.DeriveKey(k, "VLESS", key) // avoids using key directly
+	block, _ := aes.NewCipher(k)
+	return cipher.NewCTR(block, iv)
+	//chacha20.NewUnauthenticatedCipher()
+}
+
+type XorConn struct {
+	net.Conn
+	CTR       cipher.Stream
+	PeerCTR   cipher.Stream
+	OutSkip   int
+	OutHeader []byte
+	InSkip    int
+	InHeader  []byte
+}
+
+func NewXorConn(conn net.Conn, ctr, peerCTR cipher.Stream, outSkip, inSkip int) *XorConn {
+	return &XorConn{
+		Conn:      conn,
+		CTR:       ctr,
+		PeerCTR:   peerCTR,
+		OutSkip:   outSkip,
+		OutHeader: make([]byte, 0, 5), // important
+		InSkip:    inSkip,
+		InHeader:  make([]byte, 0, 5), // important
+	}
+}
+
+func (c *XorConn) Write(b []byte) (int, error) {
+	if len(b) == 0 {
+		return 0, nil
+	}
+	for p := b; ; {
+		if len(p) <= c.OutSkip {
+			c.OutSkip -= len(p)
+			break
+		}
+		p = p[c.OutSkip:]
+		c.OutSkip = 0
+		need := 5 - len(c.OutHeader)
+		if len(p) < need {
+			c.OutHeader = append(c.OutHeader, p...)
+			c.CTR.XORKeyStream(p, p)
+			break
+		}
+		c.OutSkip, _ = DecodeHeader(append(c.OutHeader, p[:need]...))
+		c.OutHeader = c.OutHeader[:0]
+		c.CTR.XORKeyStream(p[:need], p[:need])
+		p = p[need:]
+	}
+	if _, err := c.Conn.Write(b); err != nil {
+		return 0, err
+	}
+	return len(b), nil
+}
+
+func (c *XorConn) Read(b []byte) (int, error) {
+	if len(b) == 0 {
+		return 0, nil
+	}
+	n, err := c.Conn.Read(b)
+	for p := b[:n]; ; {
+		if len(p) <= c.InSkip {
+			c.InSkip -= len(p)
+			break
+		}
+		p = p[c.InSkip:]
+		c.InSkip = 0
+		need := 5 - len(c.InHeader)
+		if len(p) < need {
+			c.PeerCTR.XORKeyStream(p, p)
+			c.InHeader = append(c.InHeader, p...)
+			break
+		}
+		c.PeerCTR.XORKeyStream(p[:need], p[:need])
+		c.InSkip, _ = DecodeHeader(append(c.InHeader, p[:need]...))
+		c.InHeader = c.InHeader[:0]
+		p = p[need:]
+	}
+	return n, err
+}

proxy/vless/inbound/config.pb.go

@@ -111,11 +111,11 @@ type Config struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Clients []*protocol.User `protobuf:"bytes,1,rep,name=clients,proto3" json:"clients,omitempty"`
-	// Decryption settings. Only applies to server side, and only accepts "none"
-	// for now.
-	Decryption string      `protobuf:"bytes,2,opt,name=decryption,proto3" json:"decryption,omitempty"`
-	Fallbacks  []*Fallback `protobuf:"bytes,3,rep,name=fallbacks,proto3" json:"fallbacks,omitempty"`
+	Clients    []*protocol.User `protobuf:"bytes,1,rep,name=clients,proto3" json:"clients,omitempty"`
+	Fallbacks  []*Fallback      `protobuf:"bytes,2,rep,name=fallbacks,proto3" json:"fallbacks,omitempty"`
+	Decryption string           `protobuf:"bytes,3,opt,name=decryption,proto3" json:"decryption,omitempty"`
+	XorMode    uint32           `protobuf:"varint,4,opt,name=xorMode,proto3" json:"xorMode,omitempty"`
+	Seconds    uint32           `protobuf:"varint,5,opt,name=seconds,proto3" json:"seconds,omitempty"`
 }
 
 func (x *Config) Reset() {
@@ -155,6 +155,13 @@ func (x *Config) GetClients() []*protocol.User {
 	return nil
 }
 
+func (x *Config) GetFallbacks() []*Fallback {
+	if x != nil {
+		return x.Fallbacks
+	}
+	return nil
+}
+
 func (x *Config) GetDecryption() string {
 	if x != nil {
 		return x.Decryption
@@ -162,11 +169,18 @@ func (x *Config) GetDecryption() string {
 	return ""
 }
 
-func (x *Config) GetFallbacks() []*Fallback {
+func (x *Config) GetXorMode() uint32 {
 	if x != nil {
-		return x.Fallbacks
+		return x.XorMode
 	}
-	return nil
+	return 0
+}
+
+func (x *Config) GetSeconds() uint32 {
+	if x != nil {
+		return x.Seconds
+	}
+	return 0
 }
 
 var File_proxy_vless_inbound_config_proto protoreflect.FileDescriptor
@@ -185,25 +199,28 @@ var file_proxy_vless_inbound_config_proto_rawDesc = []byte{
 	0x68, 0x12, 0x12, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52,
 	0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x12, 0x0a, 0x04, 0x64, 0x65, 0x73, 0x74, 0x18, 0x05, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x78, 0x76, 0x65,
-	0x72, 0x18, 0x06, 0x20, 0x01, 0x28, 0x04, 0x52, 0x04, 0x78, 0x76, 0x65, 0x72, 0x22, 0xa0, 0x01,
+	0x72, 0x18, 0x06, 0x20, 0x01, 0x28, 0x04, 0x52, 0x04, 0x78, 0x76, 0x65, 0x72, 0x22, 0xd4, 0x01,
 	0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x34, 0x0a, 0x07, 0x63, 0x6c, 0x69, 0x65,
 	0x6e, 0x74, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x78, 0x72, 0x61, 0x79,
 	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c,
-	0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x07, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x12, 0x1e,
-	0x0a, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x02, 0x20, 0x01,
-	0x28, 0x09, 0x52, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x40,
-	0x0a, 0x09, 0x66, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28,
+	0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x07, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x12, 0x40,
+	0x0a, 0x09, 0x66, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x73, 0x18, 0x02, 0x20, 0x03, 0x28,
 	0x0b, 0x32, 0x22, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76,
 	0x6c, 0x65, 0x73, 0x73, 0x2e, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x2e, 0x46, 0x61, 0x6c,
 	0x6c, 0x62, 0x61, 0x63, 0x6b, 0x52, 0x09, 0x66, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x73,
-	0x42, 0x6a, 0x0a, 0x1c, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f,
-	0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64,
-	0x50, 0x01, 0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72,
-	0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e,
-	0x64, 0xaa, 0x02, 0x18, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56,
-	0x6c, 0x65, 0x73, 0x73, 0x2e, 0x49, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x62, 0x06, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x33,
+	0x12, 0x1e, 0x0a, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e,
+	0x12, 0x18, 0x0a, 0x07, 0x78, 0x6f, 0x72, 0x4d, 0x6f, 0x64, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28,
+	0x0d, 0x52, 0x07, 0x78, 0x6f, 0x72, 0x4d, 0x6f, 0x64, 0x65, 0x12, 0x18, 0x0a, 0x07, 0x73, 0x65,
+	0x63, 0x6f, 0x6e, 0x64, 0x73, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07, 0x73, 0x65, 0x63,
+	0x6f, 0x6e, 0x64, 0x73, 0x42, 0x6a, 0x0a, 0x1c, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79,
+	0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x69, 0x6e, 0x62,
+	0x6f, 0x75, 0x6e, 0x64, 0x50, 0x01, 0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72,
+	0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f, 0x69, 0x6e,
+	0x62, 0x6f, 0x75, 0x6e, 0x64, 0xaa, 0x02, 0x18, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f,
+	0x78, 0x79, 0x2e, 0x56, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x49, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

proxy/vless/inbound/config.proto

@@ -19,8 +19,9 @@ message Fallback {
 
 message Config {
   repeated xray.common.protocol.User clients = 1;
-  // Decryption settings. Only applies to server side, and only accepts "none"
-  // for now.
-  string decryption = 2;
-  repeated Fallback fallbacks = 3;
+  repeated Fallback fallbacks = 2;
+
+  string decryption = 3;
+  uint32 xorMode = 4;
+  uint32 seconds = 5;
 }

proxy/vless/inbound/inbound.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	gotls "crypto/tls"
+	"encoding/base64"
 	"io"
 	"reflect"
 	"strconv"
@@ -29,6 +30,7 @@ import (
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/vless"
 	"github.com/xtls/xray-core/proxy/vless/encoding"
+	"github.com/xtls/xray-core/proxy/vless/encryption"
 	"github.com/xtls/xray-core/transport/internet/reality"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
@@ -67,6 +69,7 @@ type Handler struct {
 	policyManager         policy.Manager
 	validator             vless.Validator
 	dns                   dns.Client
+	decryption            *encryption.ServerInstance
 	fallbacks             map[string]map[string]map[string]*Fallback // or nil
 	// regexps               map[string]*regexp.Regexp       // or nil
 }
@@ -81,6 +84,19 @@ func New(ctx context.Context, config *Config, dc dns.Client, validator vless.Val
 		validator:             validator,
 	}
 
+	if config.Decryption != "none" {
+		s := strings.Split(config.Decryption, ".")
+		var nfsSKeysBytes [][]byte
+		for _, r := range s {
+			b, _ := base64.RawURLEncoding.DecodeString(r)
+			nfsSKeysBytes = append(nfsSKeysBytes, b)
+		}
+		handler.decryption = &encryption.ServerInstance{}
+		if err := handler.decryption.Init(nfsSKeysBytes, config.XorMode, config.Seconds); err != nil {
+			return nil, errors.New("failed to use decryption").Base(err).AtError()
+		}
+	}
+
 	if config.Fallbacks != nil {
 		handler.fallbacks = make(map[string]map[string]map[string]*Fallback)
 		// handler.regexps = make(map[string]*regexp.Regexp)
@@ -159,6 +175,9 @@ func isMuxAndNotXUDP(request *protocol.RequestHeader, first *buf.Buffer) bool {
 
 // Close implements common.Closable.Close().
 func (h *Handler) Close() error {
+	if h.decryption != nil {
+		h.decryption.Close()
+	}
 	return errors.Combine(common.Close(h.validator))
 }
 
@@ -199,6 +218,14 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 		iConn = statConn.Connection
 	}
 
+	if h.decryption != nil {
+		var err error
+		connection, err = h.decryption.Handshake(connection)
+		if err != nil {
+			return errors.New("ML-KEM-768 handshake failed").Base(err).AtInfo()
+		}
+	}
+
 	sessionPolicy := h.policyManager.ForLevel(0)
 	if err := connection.SetReadDeadline(time.Now().Add(sessionPolicy.Timeouts.Handshake)); err != nil {
 		return errors.New("unable to set read deadline").Base(err).AtWarning()
@@ -462,6 +489,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 		// Flow: requestAddons.Flow,
 	}
 
+	var peerCache *[]byte
 	var input *bytes.Reader
 	var rawInput *bytes.Buffer
 	switch requestAddons.Flow {
@@ -474,6 +502,13 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 			case protocol.RequestCommandMux:
 				fallthrough // we will break Mux connections that contain TCP requests
 			case protocol.RequestCommandTCP:
+				if serverConn, ok := connection.(*encryption.CommonConn); ok {
+					peerCache = &serverConn.PeerCache
+					if _, ok := serverConn.Conn.(*encryption.XorConn); ok || !proxy.IsRAWTransport(iConn) {
+						inbound.CanSpliceCopy = 3 // full-random xorConn / non-RAW transport can not use Linux Splice
+					}
+					break
+				}
 				var t reflect.Type
 				var p uintptr
 				if tlsConn, ok := iConn.(*tls.Conn); ok {
@@ -542,7 +577,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 		if requestAddons.Flow == vless.XRV {
 			ctx1 := session.ContextWithInbound(ctx, nil) // TODO enable splice
 			clientReader = proxy.NewVisionReader(clientReader, trafficState, true, ctx1)
-			err = encoding.XtlsRead(clientReader, serverWriter, timer, connection, input, rawInput, trafficState, nil, true, ctx1)
+			err = encoding.XtlsRead(clientReader, serverWriter, timer, connection, peerCache, input, rawInput, trafficState, nil, true, ctx1)
 		} else {
 			// from clientReader.ReadMultiBuffer to serverWriter.WriteMultiBuffer
 			err = buf.Copy(clientReader, serverWriter, buf.UpdateActivity(timer))

proxy/vless/outbound/outbound.go

@@ -4,7 +4,9 @@ import (
 	"bytes"
 	"context"
 	gotls "crypto/tls"
+	"encoding/base64"
 	"reflect"
+	"strings"
 	"time"
 	"unsafe"
 
@@ -24,6 +26,7 @@ import (
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/vless"
 	"github.com/xtls/xray-core/proxy/vless/encoding"
+	"github.com/xtls/xray-core/proxy/vless/encryption"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/reality"
@@ -43,6 +46,7 @@ type Handler struct {
 	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
 	cone          bool
+	encryption    *encryption.ClientInstance
 }
 
 // New creates a new VLess outbound handler.
@@ -64,6 +68,20 @@ func New(ctx context.Context, config *Config) (*Handler, error) {
 		cone:          ctx.Value("cone").(bool),
 	}
 
+	a := handler.serverPicker.PickServer().PickUser().Account.(*vless.MemoryAccount)
+	if a.Encryption != "none" {
+		s := strings.Split(a.Encryption, ".")
+		var nfsPKeysBytes [][]byte
+		for _, r := range s {
+			b, _ := base64.RawURLEncoding.DecodeString(r)
+			nfsPKeysBytes = append(nfsPKeysBytes, b)
+		}
+		handler.encryption = &encryption.ClientInstance{}
+		if err := handler.encryption.Init(nfsPKeysBytes, a.XorMode, a.Seconds); err != nil {
+			return nil, errors.New("failed to use encryption").Base(err).AtError()
+		}
+	}
+
 	return handler, nil
 }
 
@@ -98,6 +116,14 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 	target := ob.Target
 	errors.LogInfo(ctx, "tunneling request to ", target, " via ", rec.Destination().NetAddr())
 
+	if h.encryption != nil {
+		var err error
+		conn, err = h.encryption.Handshake(conn)
+		if err != nil {
+			return errors.New("ML-KEM-768 handshake failed").Base(err).AtInfo()
+		}
+	}
+
 	command := protocol.RequestCommandTCP
 	if target.Network == net.Network_UDP {
 		command = protocol.RequestCommandUDP
@@ -120,6 +146,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		Flow: account.Flow,
 	}
 
+	var peerCache *[]byte
 	var input *bytes.Reader
 	var rawInput *bytes.Buffer
 	allowUDP443 := false
@@ -138,6 +165,13 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		case protocol.RequestCommandMux:
 			fallthrough // let server break Mux connections that contain TCP requests
 		case protocol.RequestCommandTCP:
+			if clientConn, ok := conn.(*encryption.CommonConn); ok {
+				peerCache = &clientConn.PeerCache
+				if _, ok := clientConn.Conn.(*encryption.XorConn); ok || !proxy.IsRAWTransport(iConn) {
+					ob.CanSpliceCopy = 3 // full-random xorConn / non-RAW transport can not use Linux Splice
+				}
+				break
+			}
 			var t reflect.Type
 			var p uintptr
 			if tlsConn, ok := iConn.(*tls.Conn); ok {
@@ -272,7 +306,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		}
 
 		if requestAddons.Flow == vless.XRV {
-			err = encoding.XtlsRead(serverReader, clientWriter, timer, conn, input, rawInput, trafficState, ob, false, ctx)
+			err = encoding.XtlsRead(serverReader, clientWriter, timer, conn, peerCache, input, rawInput, trafficState, ob, false, ctx)
 		} else {
 			// from serverReader.ReadMultiBuffer to clientWriter.WriteMultiBuffer
 			err = buf.Copy(serverReader, clientWriter, buf.UpdateActivity(timer))