diff --git a/transport/shadowsocks/core/cipher.go b/transport/shadowsocks/core/cipher.go
index 44b2e8d4..c459b2ea 100644
--- a/transport/shadowsocks/core/cipher.go
+++ b/transport/shadowsocks/core/cipher.go
@@ -61,6 +61,7 @@ var streamList = map[string]struct {
 	"AES-192-CFB":   {24, shadowstream.AESCFB},
 	"AES-256-CFB":   {32, shadowstream.AESCFB},
 	"CHACHA20":      {32, shadowstream.ChaCha20},
+	"CHACHA8-IETF":  {32, shadowstream.Chacha8IETF},
 	"CHACHA20-IETF": {32, shadowstream.Chacha20IETF},
 	"XCHACHA20":     {32, shadowstream.Xchacha20},
 }
diff --git a/transport/shadowsocks/shadowstream/cipher.go b/transport/shadowsocks/shadowstream/cipher.go
index a357bbf9..173cf37d 100644
--- a/transport/shadowsocks/shadowstream/cipher.go
+++ b/transport/shadowsocks/shadowstream/cipher.go
@@ -86,6 +86,13 @@ func (k chacha8ietfkey) Encrypter(iv []byte) cipher.Stream {
 	return ciph
 }
 
+func Chacha8IETF(key []byte) (Cipher, error) {
+	if len(key) != chacha8.KeySize {
+		return nil, KeySizeError(chacha8.KeySize)
+	}
+	return chacha8ietfkey(key), nil
+}
+
 type xchacha20key []byte
 
 func (k xchacha20key) IVSize() int                       { return chacha20.NonceSizeX }