chore: add security

backend/gestion/utils/utils.go

@@ -1,10 +1,11 @@
 package utils
 
 import (
+	"crypto/rand"
 	"fmt"
 	"gestion/db"
 	"gestion/models"
-	"math/rand"
+	"math/big"
 	"os"
 	"path/filepath"
 )
@@ -22,7 +23,8 @@ func GetMediaForProduct(productID int) ([]models.Media, error) {
 // --------------------------------------------
 
 func GenerateUniqueFileName(productName string, originalFileName string) string {
-	randomString := fmt.Sprintf("%d", rand.Intn(1000000))
+	n, _ := rand.Int(rand.Reader, big.NewInt(1000000))
+	randomString := fmt.Sprintf("%d", n.Int64())
 	ext := filepath.Ext(originalFileName)
 	return fmt.Sprintf("%s_%s%s", productName, randomString, ext)
 }