add hash password

internal/handler/handler.go

@@ -35,7 +35,13 @@ func (h *Handler) Register(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	user, err := h.Repository.AddUser(context.Background(), c.Login, c.Password)
+	pass, err := util.StringToHash(c.Password)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	user, err := h.Repository.AddUser(context.Background(), c.Login, pass)
 	if err != nil {
 		var e *pgconn.PgError
 		if errors.As(err, &e) && e.Code == "23505" {
@@ -78,7 +84,7 @@ func (h *Handler) Login(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if user.Password != c.Password {
+	if !util.CheckPassword(user.Password, c.Password) {
 		w.WriteHeader(http.StatusUnauthorized)
 		return
 	}

internal/util/hash.go

@@ -0,0 +1,17 @@
+package util
+
+import "golang.org/x/crypto/bcrypt"
+
+func StringToHash(password string) (string, error) {
+	bytePassword := []byte(password)
+	hash, err := bcrypt.GenerateFromPassword(bytePassword, bcrypt.DefaultCost)
+	if err != nil {
+		return "", err
+	}
+	return string(hash), nil
+}
+
+func CheckPassword(hashPassword, password string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hashPassword), []byte(password))
+	return err == nil
+}