support hashed credentials

pkg/auth/utils.go

@@ -2,6 +2,8 @@ package auth
 
 import (
 	"crypto/md5"
+	"crypto/sha256"
+	"encoding/base64"
 	"encoding/hex"
 )
 
@@ -10,3 +12,9 @@ func md5Hex(in string) string {
 	h.Write([]byte(in))
 	return hex.EncodeToString(h.Sum(nil))
 }
+
+func sha256Base64(in string) string {
+	h := sha256.New()
+	h.Write([]byte(in))
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}