Initial commit

Signed-off-by: Yuan Si <do4suki@gmail.com>

encrypt/hmac_sha1.go

@@ -0,0 +1,14 @@
+package encrypt
+
+import (
+	"crypto/hmac"
+	"crypto/sha1"
+	"fmt"
+)
+
+func HMAC_SHA1_Encrypt(plainText []byte, key []byte) string {
+	mac := hmac.New(sha1.New, key)
+	mac.Write(plainText)
+	cipherText := fmt.Sprintf("%x", mac.Sum(nil))
+	return cipherText
+}