# How To: Execute Query

### Prerequisites

1. **Encrypted Message**:\
   The input [message must be encrypted ](https://platformdocs.lattica.ai/how-to-guides/secure-query-processing/how-to-encrypt-input-message)using the **Secret Key** in the Query Client.
2. **User Access Token**:\
   The user must have a valid **Access Token**, specific to the workload being queried. Tokens are validated by LatticaAI during the query process.

***

Use the following code snippet to execute the query. Provide the **User Access Token** and the **encrypted message** as parameters:

{% tabs %}
{% tab title="🧊Python SDK" %}

```python
import lattica_common.app_api as agent_app
​
# Notice your query token expires in 30 days
query_token = "the_query_token_you_got_using_the_generate_user_token"

# user_data is a tuple of: 
# (serialized_context, serialized_secret_key, serialized_homseq)
# which you need for encrypting the query and querying the model
user_data = agent_app.user.query_offline_phase(query_token)

dataset = pd.read_csv('data/mnist_data.csv').values / 255
data = torch.tensor(dataset[0])
serialized_ct = agent_app.user.encrypt(user_data, dataset)

serialized_ct_res = agent_app.user.apply_hom_pipeline(serialized_ct)
```

{% endtab %}

{% tab title="📦TypeScript SDK" %}

```javascript
import { LatticaQueryClient } from 'lattica-query-client';

const client = new LatticaQueryClient('your-jwt-query-token');

// Uploaded the EK
const initialized = await client.init();
if (!initialized) {
  console.error('Initialization failed: The EK was not successfully uploaded.');
  throw new Error('EK upload failed.');
}
console.log('EK uploaded successfully.');

// The data you want to encrypt
const inputTensor = ....;

// Encrypt the provided input
const ct = await client.encrypt(pt);

// Send your encrypted query to and get a resopnse
const ct_res = await latticaClient.apply_query(ct);
```

{% endtab %}
{% endtabs %}

**Process the Response**

* If the query is successful, the result will be returned as an **encrypted response**.
* [Decrypt ](https://platformdocs.lattica.ai/how-to-guides/secure-query-processing/how-to-decrypt-output-data)the response using your **Secret Key** to obtain the result.

{% hint style="info" %}
This step focuses on a specific part of the query process: Query Execution. \
If you prefer to perform **encryption, query execution, and decryption** in a single command, refer to \[How-To: [Encrypt, Execute, and Decrypt in One Step](https://platformdocs.lattica.ai/how-to-guides/secure-query-processing/how-to-encrypt-execute-and-decrypt-in-one-step)].
{% endhint %}