Forbid patching boot.img with a superkey containing a special character

[ondrejnedoma]

Is your feature request related to a problem?/你的请求是否与某个问题相关？

Yes - you can't patch the boot.img in the app with a password that's too simple, but you CAN patch it if it has a special character. I did it and after flashing the patched boot.img apatch wasn't detected

Describe the solution you'd like/描述你想要的解决方案

The same way that a stronger password is required, special characters should be forbidden to even make a patched boot.img. I'm aware it's on the website, but I just skipped over it and this wouldn't be hard yet very useful to implement

Describe alternatives you've considered/描述您考虑过的备选方案

none

Additional context/其他信息

No response