diff --git a/go/build.go b/go/gmssl/build.go
similarity index 100%
rename from go/build.go
rename to go/gmssl/build.go
diff --git a/go/certificate.go b/go/gmssl/certificate.go
similarity index 100%
rename from go/certificate.go
rename to go/gmssl/certificate.go
diff --git a/go/cipher.go b/go/gmssl/cipher.go
similarity index 100%
rename from go/cipher.go
rename to go/gmssl/cipher.go
diff --git a/go/cms.go b/go/gmssl/cms.go
similarity index 100%
rename from go/cms.go
rename to go/gmssl/cms.go
diff --git a/go/digest.go b/go/gmssl/digest.go
similarity index 100%
rename from go/digest.go
rename to go/gmssl/digest.go
diff --git a/go/engine.go b/go/gmssl/engine.go
similarity index 100%
rename from go/engine.go
rename to go/gmssl/engine.go
diff --git a/go/ibc.go b/go/gmssl/ibc.go
similarity index 100%
rename from go/ibc.go
rename to go/gmssl/ibc.go
diff --git a/go/mac.go b/go/gmssl/mac.go
similarity index 100%
rename from go/mac.go
rename to go/gmssl/mac.go
diff --git a/go/ocsp.go b/go/gmssl/ocsp.go
similarity index 100%
rename from go/ocsp.go
rename to go/gmssl/ocsp.go
diff --git a/go/otp.go b/go/gmssl/otp.go
similarity index 100%
rename from go/otp.go
rename to go/gmssl/otp.go
diff --git a/go/pbkdf.go b/go/gmssl/pbkdf.go
similarity index 100%
rename from go/pbkdf.go
rename to go/gmssl/pbkdf.go
diff --git a/go/pkey.go b/go/gmssl/pkey.go
similarity index 100%
rename from go/pkey.go
rename to go/gmssl/pkey.go
diff --git a/go/rand.go b/go/gmssl/rand.go
similarity index 100%
rename from go/rand.go
rename to go/gmssl/rand.go
diff --git a/go/ssl.go b/go/gmssl/ssl.go
similarity index 100%
rename from go/ssl.go
rename to go/gmssl/ssl.go
diff --git a/go/version.go b/go/gmssl/version.go
similarity index 100%
rename from go/version.go
rename to go/gmssl/version.go
diff --git a/go/gmssltest.go b/go/gmssltest.go
new file mode 100644
index 00000000..6a615a80
--- /dev/null
+++ b/go/gmssltest.go
@@ -0,0 +1,81 @@
+package main
+
+import (
+	"gmssl"
+	"fmt"
+)
+
+func main() {
+
+	versions := gmssl.GetVersion()
+	for _, version := range versions {
+		fmt.Println(version)
+	}
+
+	digests := gmssl.GetDigests(false)
+	for _, digest := range digests {
+		fmt.Println(digest)
+	}
+
+	ciphers := gmssl.GetCiphers(false)
+	for _, cipher := range ciphers {
+		fmt.Println(cipher)
+	}
+
+	macs := gmssl.GetMacs(false)
+	for _, mac := range macs {
+		fmt.Println(mac)
+	}
+
+	sm3, err := gmssl.NewDigestContext("SM3", nil)
+	if err != nil {
+	}
+
+	if err := sm3.Update([]byte("hello")); err != nil {
+	}
+
+	if err := sm3.Update([]byte("world")); err != nil {
+	}
+
+	sm3digest, err := sm3.Final()
+	if err != nil {
+	}
+	fmt.Printf("%x", sm3digest)
+
+
+	hmac_sm3, err := gmssl.NewMACContext("HMAC-SM3", nil, []byte("this is the key"))
+	if err != nil {
+	}
+
+	if err := hmac_sm3.Update([]byte("hello")); err != nil {
+	}
+
+	if err := hmac_sm3.Update([]byte("world")); err != nil {
+	}
+
+	mactag, err := hmac_sm3.Final()
+	if err != nil {
+	}
+	fmt.Printf("%x", mactag)
+
+	key := []byte("key")
+	iv := []byte("iv")
+	sms4, err := gmssl.NewCipherContext("SMS4", nil, key, iv, true)
+	if err != nil {
+	}
+
+	ciphertext1, err := sms4.Update([]byte("hello"))
+	if err != nil {
+	}
+
+	ciphertext2, err := sms4.Final()
+	if err != nil {
+	}
+
+	ciphertext := make([]byte, 0, len(ciphertext1) + len(ciphertext2))
+	ciphertext = append(ciphertext, ciphertext1...)
+	ciphertext = append(ciphertext, ciphertext2...)
+	fmt.Printf("%x", ciphertext)
+
+}
+