# Tutorial

{% hint style="info" %}
Some common example commands are listed below. For step-by-step instructions, advice/warnings, and additional functionality, please see the different [sections](https://www.kryptor.co.uk/tutorial/entering-a-passphrase).
{% endhint %}

## tldr

* Encrypt a file/directory with a passphrase:

```bash
kryptor --encrypt --passphrase "path/to/unencrypted_file"
```

* Decrypt an encrypted file with a passphrase:

```bash
kryptor --decrypt --passphrase "path/to/encrypted_file"
```

* Generate a new key pair (stored in `~/.kryptor`) for encryption or signing:

```bash
kryptor --generate
```

* Encrypt a file/directory to one or more recipient public keys:

{% code overflow="wrap" fullWidth="false" %}

```bash
kryptor --encrypt --public Cu//0bQcNYsWeSMwh+sZlJjDIRajfxn65x0qY0MHanPAjlk= --public Cu//Rwvoo8l1x0/bn6yg3p2+SMWSzKhDdPqvlYRFLNaaFSU= "path/to/unencrypted_file"
```

{% endcode %}

* Decrypt a file sent to your public key using your default private key and the sender's public key:

{% code overflow="wrap" %}

```bash
kryptor --decrypt --public Cu//2M5FqAnxmW7PiKxIqLmKEPNxT1Kdkm4U3K/Gr++6OAQ= "path/to/encrypted_file"
```

{% endcode %}

* Sign a file with your default private key:

```bash
kryptor --sign "path/to/unsigned_file"
```

* Verify a signature using someone's public key:

{% code overflow="wrap" %}

```bash
kryptor --verify --public Ed//bnY+xqUXVMaaI0poBwTqDRlKA9+x9FjlDAHE9MmXKG4= "path/to/signed_file"
```

{% endcode %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://www.kryptor.co.uk/tutorial.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.