### Install @primno/dpapi

Source: https://github.com/primno/dpapi/blob/main/README.md

Installs the @primno/dpapi package using npm. This command fetches and installs the prebuilt native module for the current Node.js environment.

```bash
npm install @primno/dpapi
```

--------------------------------

### DPAPI Usage with CommonJS

Source: https://github.com/primno/dpapi/blob/main/README.md

Illustrates the usage of the Dpapi class and isPlatformSupported flag in a CommonJS environment. It includes a platform check and performs encryption/decryption of a string with the CurrentUser scope.

```javascript
const { Dpapi, isPlatformSupported } = require("@primno/dpapi");

if (isPlatformSupported) {
    const buffer = Buffer.from("Hello world", "utf-8");

    const encrypted = Dpapi.protectData(buffer, null, "CurrentUser");
    const decrypted = Dpapi.unprotectData(encrypted, null, "CurrentUser");
}
else {
    console.error("Platform not supported. Only Windows is supported (x64, ARM64)");
}
```

--------------------------------

### DPAPI Usage with ECMAScript Modules

Source: https://github.com/primno/dpapi/blob/main/README.md

Demonstrates how to use the Dpapi class and isPlatformSupported flag within an ECMAScript module. It checks for platform compatibility before encrypting and decrypting a sample string using the CurrentUser scope.

```javascript
import { Dpapi, isPlatformSupported } from "@primno/dpapi";

if (isPlatformSupported) {
    const buffer = Buffer.from("Hello world", "utf-8");

    const encrypted = Dpapi.protectData(buffer, null, "CurrentUser");
    const decrypted = Dpapi.unprotectData(encrypted, null, "CurrentUser");
}
else {
    console.error("Platform not supported. Only Windows is supported (x64, ARM64)");
}
```

--------------------------------

### DPAPI Class Definition

Source: https://github.com/primno/dpapi/blob/main/README.md

Defines the Dpapi class with methods for protecting and unprotecting data, and a boolean flag indicating platform support. ProtectData encrypts data, while UnprotectData decrypts it, both accepting optional entropy and a scope.

```typescript
class Dpapi {
    public protectData(
        userData: Uint8Array,
        optionalEntropy: Uint8Array | null,
        scope: "CurrentUser" | "LocalMachine"
    ): Uint8Array;

    public unprotectData(
        encryptedData: Uint8Array,
        optionalEntropy: Uint8Array | null,
        scope: "CurrentUser" | "LocalMachine"
    ): Uint8Array;
}

const isPlatformSupported: boolean;
```

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