Update version

main.go

@@ -1,12 +1,13 @@
 // GoPass
 // Author: Maximilian Patterson
-// Version: 1.2.1
+// Version: 1.2.2
 package main
 
 import (
 	cryptorand "crypto/rand"
 	"encoding/binary"
 	"fmt"
+	"math/big"
 	mathrand "math/rand"
 	"os"
 	"strconv"
@@ -60,7 +61,12 @@ func main() {
 	// Assign every slot of pass to a random allowedCharacter
 	for i := range pass {
 		// Generate a random int greater than 0 and not to exceed the length of allowedCharacters
-		pass[i] = allowedCharacters[mathrand.Intn(len(allowedCharacters))]
+		index, err := cryptorand.Int(cryptorand.Reader, big.NewInt(int64(len(allowedCharacters))))
+		if err != nil {
+			println("Error securely generating random character!")
+			return
+		}
+		pass[i] = allowedCharacters[index.Int64()]
 	}
 
 	// Print the password