initial import

core/codec/hmac.go

@@ -0,0 +1,18 @@
+package codec
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"io"
+)
+
+func Hmac(key []byte, body string) []byte {
+	h := hmac.New(sha256.New, key)
+	io.WriteString(h, body)
+	return h.Sum(nil)
+}
+
+func HmacBase64(key []byte, body string) string {
+	return base64.StdEncoding.EncodeToString(Hmac(key, body))
+}