From 7de155af646f59ba221d44d0f989a0f03fd09206 Mon Sep 17 00:00:00 2001
From: Martin Dosch <martin@mdosch.de>
Date: Sun, 4 Jun 2023 16:14:32 +0200
Subject: [PATCH] [golangci-lint]: Use stronger random number generator for
 rPad.

---
 helpers.go | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/helpers.go b/helpers.go
index bda4e58..9c0508a 100644
--- a/helpers.go
+++ b/helpers.go
@@ -6,9 +6,10 @@ package main
 
 import (
 	"bytes"
+	"crypto/rand"
 	"fmt"
 	"log"
-	"math/rand"
+	"math/big"
 	"net/url"
 	"os"
 	"regexp"
@@ -50,9 +51,14 @@ func readFile(path string) (*bytes.Buffer, error) {
 func getRpad(messageLength int) string {
 	rpadRunes := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 	length := 100 - messageLength%100
+	max := big.NewInt(int64(len(rpadRunes)))
 	rpad := make([]rune, length)
 	for i := range rpad {
-		rpad[i] = rpadRunes[rand.Intn(len(rpadRunes))]
+		randInt, err := rand.Int(rand.Reader, max)
+		if err != nil {
+			log.Fatal(err)
+		}
+		rpad[i] = rpadRunes[randInt.Int64()]
 	}
 	return string(rpad)
 }