---
url: /process-functions/security-sha256hmac.md
description: Generate a SHA256 HMAC hash.
---

# security.sha256hmac

Generate a SHA256 HMAC hash.

```js
security.sha256hmac(key, str);
```

#### Parameters

* `key` - A secret key (string).
* `str` - The string to hash.

```js
let hash = security.sha256hmac("mySecret", "Hello"); // "wXJ+DzC4r15MVx/w0i0PXezGMBjy1uN2rBbcBNBuSCw="
```