---
title: passimg
categories:
  - C libraries
---

**passimg** is a library for asking for passwords. Asking for passwords was
never this weird: instead of an input box that hides what you type, it opens
an image picker and derives the password from the image you select.

```
#include "passimg.h"
#include <stdio.h>

int
main()
{
        const char *password = passimg();
        printf("password: %s\n", password);
        return 0;
}
```

## Pros and cons

- Streamers can't leak their passwords: a screen capture is not the picture.
- If you lose the picture, the password is gone.
- Sharing the password between devices is harder.

About security: people ask what happens if someone gets into my computer and
steals my images. I ask why they wouldn't steal my passwords too.

> [!WARNING]
> Written in about an hour and 100 lines of C. It has bugs, security issues
> and stability problems I haven't found yet.

## Dependencies

stb_image and tinyfiledialogs, in `deps/`.

## See also

- [Source code](https://github.com/hugoocoto/passimg)