> For the complete documentation index, see [llms.txt](https://www.kryptor.co.uk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.kryptor.co.uk/tutorial/encryption-options.md).

# Encryption options

## Overwriting unencrypted files

For each specified file, Kryptor will copy the encrypted file to the location of the unencrypted file before deleting the overwritten file, leaving just the encrypted file.

Here's an example:

```bash
$ kryptor -e -o file.txt
```

{% hint style="warning" %}
Disk encryption should be used if you want to prevent unencrypted files being recovered.
{% endhint %}

## Encrypting file names

Kryptor will randomise the names of encrypted files, and the original name for each file will be restored automatically during decryption.

Here's an example:

```bash
$ kryptor -e -n file.txt
```

{% hint style="warning" %}
Using this feature is not recommended if file names contain non-[ASCII](https://www.rfc-editor.org/rfc/rfc20) characters (e.g. non-English/accented characters).
{% endhint %}


---

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