# TFHE End-to-End Demo (Sunscreen + Lattica)

### What you will do

➤ Create and compile a simple TFHE program that compares two encrypted values

➤ Create a Lattica account and get access.

➤ Set up your account.

➤ Install the management client and deploy the compiled program.

➤ Install the Query Client and run an encrypted query.

➤ Clean up resources.

***

### Part 1: Sunscreen (local)

#### 1. Create and compile a TFHE program

Follow [Sunscreen’s guide](https://github.com/Sunscreen-tech/spf-runner/tree/main/example) to write and compile "greater than" program

**Output of this step:** A compiled TFHE program artifact (ELF)

***

### Part 2: Lattica Console (Web)

#### 2. Create a Lattica account

👉 [Sign up](https://console.lattica.ai/?partner=sunscreen\&signup=true)

***

#### 3. Get license and buy credits

Sign in to the [Console](https://console.lattica.ai/?partner=sunscreen)

In the Console, do both:

**a. Get license**

* Go to Account / License
* Copy your license

<div align="left"><figure><img src="/files/vn6rtr5y2ZkqmK1baso1" alt="" width="375"><figcaption></figcaption></figure></div>

***

### Part 3: Deployment & Access Management (CLI Example)

{% hint style="info" %}
**Alternative: Use the Console**

Instead of using the Management Client commands below, you can:

* [Deploy](/how-to-guides/workload-lifecycle/how-to-deploy-workload.md) the compiled program via the **Lattica Console**
* [Create access tokens](/how-to-guides/access-control/how-to-create-user-access-token.md) via the **Access Management screen**
* Manage [credits ](/how-to-guides/account-and-finance-operations/how-to-view-credit-balance-and-add-credit-to-your-account.md)and [start](/how-to-guides/resource-management/how-to-start-worker.md)/[stop ](/how-to-guides/resource-management/how-to-stop-worker.md)workers from the UI

This demo uses CLI commands for reproducibility and automation.
{% endhint %}

#### 4. Install Management Client

```
pip install lattica-management
```

***

#### 5. Deploy program and start worker

Upload the compiled program from Part 1 and start a worker.

```py
from lattica_management.lattica_management import LatticaManagement
from lattica_common.definitions import InstanceType


LICENSE_KEY = "<YOUR_LICENSE_KEY>"
mgmt_client = LatticaManagement(LICENSE_KEY)

PROGRAM_NAME = "my_greater_than_program"
model_id = mgmt_client.create_model(PROGRAM_NAME, InstanceType.CPU_C7G_XLARGE)

program_params = {
    "compilation_name": "greater_than"
}

PROGRAM_FILE_PATH = "greater_than"
mgmt_client.upload_model_file(PROGRAM_FILE_PATH, model_id, program_params)

worker = mgmt_client.start_worker(model_id, verbose=True)

query_token = mgmt_client.generate_query_token(model_id, token_name="my_greater_than_token1")
```

***

### Part 4: Code – Query

#### 6. Install Query Client

```
pip install lattica-query-sunscreen
```

***

#### 7. Run encrypted query

```python
from lattica_query import client_factory


query_client = client_factory.create_query_client(query_token)
_, keys, _ = query_client.generate_key()

pt = [5, 6]
print(f"Running query with {pt=}...")

result = query_client.run_query(
                keys,
                pt,
                input_types=["u8", "u8"],
                return_type="u8"
            )

print(f"Decrypted Result: {result}")
```

***

### Part 5: Clean up

```py
mgmt_client.stop_worker(model_id, worker['workerSessionId'])
```

***

**Done.**


---

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```
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```

The question should be specific, self-contained, and written in natural language.
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