diff --git a/proxy/shadowsocks/config.go b/proxy/shadowsocks/config.go index 4138b114131..0cf8ec93b3b 100644 --- a/proxy/shadowsocks/config.go +++ b/proxy/shadowsocks/config.go @@ -25,6 +25,8 @@ type MemoryAccount struct { Key []byte replayFilter antireplay.GeneralizedReplayFilter + + ReducedIVEntropy bool } // Equals implements protocol.Account.Equals(). @@ -101,6 +103,7 @@ func (a *Account) AsAccount() (protocol.Account, error) { } return nil }(), + ReducedIVEntropy: a.ExperimentReducedIvHeadEntropy, }, nil } diff --git a/proxy/shadowsocks/config.pb.go b/proxy/shadowsocks/config.pb.go index 8a9117d140d..87393e22799 100644 --- a/proxy/shadowsocks/config.pb.go +++ b/proxy/shadowsocks/config.pb.go @@ -83,9 +83,10 @@ type Account struct { sizeCache protoimpl.SizeCache unknownFields protoimpl.UnknownFields - Password string `protobuf:"bytes,1,opt,name=password,proto3" json:"password,omitempty"` - CipherType CipherType `protobuf:"varint,2,opt,name=cipher_type,json=cipherType,proto3,enum=v2ray.core.proxy.shadowsocks.CipherType" json:"cipher_type,omitempty"` - IvCheck bool `protobuf:"varint,3,opt,name=iv_check,json=ivCheck,proto3" json:"iv_check,omitempty"` + Password string `protobuf:"bytes,1,opt,name=password,proto3" json:"password,omitempty"` + CipherType CipherType `protobuf:"varint,2,opt,name=cipher_type,json=cipherType,proto3,enum=v2ray.core.proxy.shadowsocks.CipherType" json:"cipher_type,omitempty"` + IvCheck bool `protobuf:"varint,3,opt,name=iv_check,json=ivCheck,proto3" json:"iv_check,omitempty"` + ExperimentReducedIvHeadEntropy bool `protobuf:"varint,90001,opt,name=experiment_reduced_iv_head_entropy,json=experimentReducedIvHeadEntropy,proto3" json:"experiment_reduced_iv_head_entropy,omitempty"` } func (x *Account) Reset() { @@ -141,6 +142,13 @@ func (x *Account) GetIvCheck() bool { return false } +func (x *Account) GetExperimentReducedIvHeadEntropy() bool { + if x != nil { + return x.ExperimentReducedIvHeadEntropy + } + return false +} + type ServerConfig struct { state protoimpl.MessageState sizeCache protoimpl.SizeCache @@ -278,7 +286,7 @@ var file_proxy_shadowsocks_config_proto_rawDesc = []byte{ 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x2f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x73, 0x70, 0x65, 0x63, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x22, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6e, 0x65, 0x74, 0x2f, 0x70, 0x61, 0x63, 0x6b, 0x65, 0x74, 0x61, 0x64, 0x64, 0x72, 0x2f, 0x63, - 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x8b, 0x01, 0x0a, 0x07, + 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xd9, 0x01, 0x0a, 0x07, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x1a, 0x0a, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x12, 0x49, 0x0a, 0x0b, 0x63, 0x69, 0x70, 0x68, 0x65, 0x72, 0x5f, 0x74, 0x79, @@ -287,42 +295,47 @@ var file_proxy_shadowsocks_config_proto_rawDesc = []byte{ 0x6f, 0x77, 0x73, 0x6f, 0x63, 0x6b, 0x73, 0x2e, 0x43, 0x69, 0x70, 0x68, 0x65, 0x72, 0x54, 0x79, 0x70, 0x65, 0x52, 0x0a, 0x63, 0x69, 0x70, 0x68, 0x65, 0x72, 0x54, 0x79, 0x70, 0x65, 0x12, 0x19, 0x0a, 0x08, 0x69, 0x76, 0x5f, 0x63, 0x68, 0x65, 0x63, 0x6b, 0x18, 0x03, 0x20, 0x01, 0x28, 0x08, - 0x52, 0x07, 0x69, 0x76, 0x43, 0x68, 0x65, 0x63, 0x6b, 0x22, 0xf7, 0x01, 0x0a, 0x0c, 0x53, 0x65, - 0x72, 0x76, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x23, 0x0a, 0x0b, 0x75, 0x64, - 0x70, 0x5f, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08, 0x42, - 0x02, 0x18, 0x01, 0x52, 0x0a, 0x75, 0x64, 0x70, 0x45, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, - 0x34, 0x0a, 0x04, 0x75, 0x73, 0x65, 0x72, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20, 0x2e, - 0x76, 0x32, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, - 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 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CipherType cipher_type = 2; bool iv_check = 3; + bool experiment_reduced_iv_head_entropy = 90001; } enum CipherType { diff --git a/proxy/shadowsocks/protocol.go b/proxy/shadowsocks/protocol.go index 55549d90737..6ae8f4f8017 100644 --- a/proxy/shadowsocks/protocol.go +++ b/proxy/shadowsocks/protocol.go @@ -6,6 +6,7 @@ import ( "crypto/sha256" "hash/crc32" "io" + mrand "math/rand" gonet "net" "github.com/v2fly/v2ray-core/v5/common" @@ -103,6 +104,9 @@ func WriteTCPRequest(request *protocol.RequestHeader, writer io.Writer) (buf.Wri if account.Cipher.IVSize() > 0 { iv = make([]byte, account.Cipher.IVSize()) common.Must2(rand.Read(iv)) + if account.ReducedIVEntropy { + remapToPrintable(iv[:6]) + } if ivError := account.CheckIV(iv); ivError != nil { return nil, newError("failed to mark outgoing iv").Base(ivError) } @@ -301,3 +305,11 @@ func (w *UDPWriter) WriteTo(payload []byte, addr gonet.Addr) (n int, err error) packet.Release() return len(payload), err } + +func remapToPrintable(input []byte) { + const charSet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!#$%&()*+,./:;<=>?@[]^_`{|}~\\\"" + seed := mrand.New(mrand.NewSource(int64(crc32.ChecksumIEEE(input)))) + for i := range input { + input[i] = charSet[seed.Intn(len(charSet))] + } +} diff --git a/proxy/shadowsocks/simplified/config.go b/proxy/shadowsocks/simplified/config.go index a81240ed6a1..87166fcd5fe 100644 --- a/proxy/shadowsocks/simplified/config.go +++ b/proxy/shadowsocks/simplified/config.go @@ -37,8 +37,9 @@ func init() { User: []*protocol.User{ { Account: serial.ToTypedMessage(&shadowsocks.Account{ - Password: simplifiedClient.Password, - CipherType: shadowsocks.CipherFromString(simplifiedClient.Method), + Password: simplifiedClient.Password, + CipherType: shadowsocks.CipherFromString(simplifiedClient.Method), + ExperimentReducedIvHeadEntropy: simplifiedClient.ExperimentReducedIvHeadEntropy, }), }, }, diff --git a/proxy/shadowsocks/simplified/config.pb.go b/proxy/shadowsocks/simplified/config.pb.go index e2922100bd3..36472533455 100644 --- a/proxy/shadowsocks/simplified/config.pb.go +++ b/proxy/shadowsocks/simplified/config.pb.go @@ -99,10 +99,11 @@ type ClientConfig struct { sizeCache protoimpl.SizeCache unknownFields protoimpl.UnknownFields - Address *net.IPOrDomain `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"` - Port uint32 `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"` - Method string `protobuf:"bytes,3,opt,name=method,proto3" json:"method,omitempty"` - Password string `protobuf:"bytes,4,opt,name=password,proto3" json:"password,omitempty"` + Address *net.IPOrDomain `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"` + Port uint32 `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"` + Method string `protobuf:"bytes,3,opt,name=method,proto3" json:"method,omitempty"` + Password string `protobuf:"bytes,4,opt,name=password,proto3" json:"password,omitempty"` + ExperimentReducedIvHeadEntropy bool `protobuf:"varint,90001,opt,name=experiment_reduced_iv_head_entropy,json=experimentReducedIvHeadEntropy,proto3" json:"experiment_reduced_iv_head_entropy,omitempty"` } func (x *ClientConfig) Reset() { @@ -165,6 +166,13 @@ func (x *ClientConfig) GetPassword() string { return "" } +func (x *ClientConfig) GetExperimentReducedIvHeadEntropy() bool { + if x != nil { + return x.ExperimentReducedIvHeadEntropy + } + return false +} + var File_proxy_shadowsocks_simplified_config_proto protoreflect.FileDescriptor var file_proxy_shadowsocks_simplified_config_proto_rawDesc = []byte{ @@ -192,7 +200,7 @@ var file_proxy_shadowsocks_simplified_config_proto_rawDesc = []byte{ 0x64, 0x64, 0x72, 0x54, 0x79, 0x70, 0x65, 0x52, 0x0e, 0x70, 0x61, 0x63, 0x6b, 0x65, 0x74, 0x45, 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x3a, 0x1e, 0x82, 0xb5, 0x18, 0x09, 0x0a, 0x07, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x82, 0xb5, 0x18, 0x0d, 0x12, 0x0b, 0x73, 0x68, 0x61, 0x64, - 0x6f, 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f959b9d9a8b..50aa83ca65e 100644 --- a/proxy/shadowsocks/simplified/config.proto +++ b/proxy/shadowsocks/simplified/config.proto @@ -28,4 +28,5 @@ message ClientConfig { uint32 port = 2; string method = 3; string password = 4; + bool experiment_reduced_iv_head_entropy = 90001; } \ No newline at end of file