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Enjin Wallet Daemon is responsible for automatically signing transactions that were created using Enjin Platform Cloud.

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# Enjin Wallet Daemon

A lightweight outbound-only signer for Enjin Platform Cloud transactions.

[![License: LGPL 3.0](https://img.shields.io/badge/license-LGPL_3.0-purple)](https://opensource.org/license/lgpl-3-0/)

The daemon polls Enjin Platform Cloud for pending transactions, signs them with the configured wallet, and returns signed payloads to the platform for broadcast. It does not accept inbound transaction requests, so the host running the daemon should not expose public ports for daemon traffic.

For the full user guide, including binary downloads, Docker, AWS CloudFormation, import, export, and migration workflows, see [Using the Wallet Daemon](https://docs.enjin.io/getting-started/using-wallet-daemon).

## Security Notes

The daemon is security-sensitive.

- It stores an encrypted `wallet.seed` file on disk.
- `KEY_PASS` encrypts and decrypts `wallet.seed`.
- `PLATFORM_KEY` authenticates the daemon with Enjin Platform Cloud.

Back up `wallet.seed` and `KEY_PASS` separately. Losing either value can make the wallet unrecoverable. Do not rotate `KEY_PASS` for an existing `wallet.seed`; changing `KEY_PASS` is not currently supported.

Run exactly one daemon per Platform account. Multiple wallets can be derived and used for signing from the master key.

## Configuration

The daemon reads configuration from environment variables or a local `.env` file.

| Variable | Required | Description |
|----------|----------|-------------|
| `KEY_PASS` | Yes | Password used to encrypt and decrypt `wallet.seed`. Use a unique, high-entropy value. |
| `PLATFORM_KEY` | Yes | Enjin Platform Cloud API token used by the daemon. |
| `SEED_PATH` | No | Optional path to a seed file or seed directory. |

Minimal `.env`:

```bash
KEY_PASS=your-unique-key-password
PLATFORM_KEY=your-platform-api-token
```

### Windows / PowerShell

The `.env` file must be UTF-8. Windows PowerShell 5.1 writes UTF-16 by default
(`>`, `Out-File`, `Set-Content` without `-Encoding`), which can corrupt `.env`.
The daemon auto-detects and reads UTF-16 `.env` files, but to be safe either
save explicitly as UTF-8:

```powershell
Set-Content -Path .env -Encoding utf8 -Value "KEY_PASS=...`nPLATFORM_KEY=..."
```

or set the variables in the session instead of using a file:

```powershell
$env:KEY_PASS="your-unique-key-password"
$env:PLATFORM_KEY="your-platform-api-token"
```

Also make sure the file is named exactly `.env`, not `.env.txt` (Notepad can add
a hidden `.txt` extension).

## Running Locally

Build and run from source:

```bash
cargo build --release
./target/release/wallet-daemon
```

Import an existing 12-word mnemonic:

```bash
./target/release/wallet-daemon import
```

Print the decrypted seed for migration:

```bash
./target/release/wallet-daemon print-seed
```

Only print the seed from a trusted shell.

## Docker

The published image is available on [Docker Hub](https://hub.docker.com/r/enjin/wallet-daemon).

## Tests

```bash
cargo test
```

## License

The LGPL 3.0 License. See [LICENSE](LICENSE).

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