写到一半发现之前的代码逻辑有问题

Signed-off-by: dmy@lab <dmy@lab.com>

cipher/chacha.go

@@ -0,0 +1,20 @@
+package cipher
+
+type ChaCha struct {
+}
+
+func (*ChaCha) Decrypt(data []byte) (decrypted []byte, err error) {
+	decrypted = data
+	err = nil
+	return
+}
+
+func (*ChaCha) Encrypt(data []byte) (encryped []byte, err error) {
+	encryped = data
+	err = nil
+	return
+}
+
+func NewChaCha() (cipher Cipher) {
+	return &ChaCha{}
+}

cipher/cipher.go

@@ -0,0 +1,23 @@
+package cipher
+
+import (
+	"net"
+)
+
+type Cipher interface {
+	Decrypt(data []byte) (decrypted []byte, err error)
+	Encrypt(data []byte) (encryped []byte, err error)
+}
+
+type Carrier struct {
+	Conn   net.Conn
+	Cipher Cipher
+	Cache  []byte
+}
+
+func NewCipher(cipherName string) (cipher Cipher) {
+	if cipherName == "default" {
+		return NewChaCha()
+	}
+	return nil //TODO:临时这样处理
+}

cipher/communication.go

@@ -0,0 +1,15 @@
+package cipher
+
+import (
+//	"github.com/TransX/cipher"
+)
+
+func SendData(carrier *Carrier, nByte int) (n int, err error) {
+	n, err = carrier.Conn.Write(carrier.Cache[:nByte])
+	return
+}
+
+func ReceiveData(carrier *Carrier) (n int, err error) {
+	n, err = carrier.Conn.Read(carrier.Cache)
+	return
+}