---
title: Improved support for Node.js Crypto and TLS APIs in Workers
description: Node.js APIs from the node:crypto and node:tls modules are now available when using nodejs_compat.
image: https://developers.cloudflare.com/changelog-preview.png
---

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## Improved support for Node.js Crypto and TLS APIs in Workers

Apr 08, 2025 

[ Workers ](https://developers.cloudflare.com/workers/) 

When using a Worker with the [nodejs\_compat](https://developers.cloudflare.com/workers/runtime-apis/nodejs/) compatibility flag enabled, the following Node.js APIs are now available:

* [node:crypto](https://developers.cloudflare.com/workers/runtime-apis/nodejs/crypto/)
* [node:tls](https://developers.cloudflare.com/workers/runtime-apis/nodejs/tls/)

This make it easier to reuse existing Node.js code in Workers or use npm packages that depend on these APIs.

#### node:crypto

The full [node:crypto ↗](https://nodejs.org/api/crypto.html) API is now available in Workers.

You can use it to verify and sign data:

JavaScript

```
import { sign, verify } from "node:crypto";
const signature = sign("sha256", "-data to sign-", env.PRIVATE_KEY);const verified = verify("sha256", "-data to sign-", env.PUBLIC_KEY, signature);
```

Or, to encrypt and decrypt data:

JavaScript

```
import { publicEncrypt, privateDecrypt } from "node:crypto";
const encrypted = publicEncrypt(env.PUBLIC_KEY, "some data");const plaintext = privateDecrypt(env.PRIVATE_KEY, encrypted);
```

See the [node:crypto documentation](https://developers.cloudflare.com/workers/runtime-apis/nodejs/crypto/) for more information.

#### node:tls

The following APIs from `node:tls` are now available:

* [connect ↗](https://nodejs.org/api/tls.html#tlsconnectoptions-callback)
* [TLSSocket ↗](https://nodejs.org/api/tls.html#class-tlstlssocket)
* [checkServerIdentity ↗](https://nodejs.org/api/tls.html#tlscheckserveridentityhostname-cert)
* [createSecureContext ↗](https://nodejs.org/api/tls.html#tlscreatesecurecontextoptions)

This enables secure connections over TLS (Transport Layer Security) to external services.

JavaScript

```
import { connect } from "node:tls";
// ... in a request handler ...const connectionOptions = { key: env.KEY, cert: env.CERT };const socket = connect(url, connectionOptions, () => {  if (socket.authorized) {    console.log("Connection authorized");  }});
socket.on("data", (data) => {  console.log(data);});
socket.on("end", () => {  console.log("server ends connection");});
```

See the [node:tls documentation](https://developers.cloudflare.com/workers/runtime-apis/nodejs/tls/) for more information.

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```