---
schema_version: "1"
id: fde3ab3f209fc6d5b5649ea8f99f56bf6c9394aa157b13dcdcf7ef170c5d5419
title: HMAC Variables (dw::util::jwt::HMAC)
collection: mulesoft
version: current
locale: en-us
portal_url: https://docs.salesforce.com/mulesoft/current/en-us/dataweave/latest/dw-hmac-variables.md
canonical_url: https://docs.mulesoft.com/dataweave/latest/dw-hmac-variables
source_site: docs.mulesoft.com
content_type: documentation
content_hash: f81b9ff2b98dba4eb5b61440498168d20bb568891bc5b653550f4b69319cec39
description: MuleSoft Documentation Site
release: "2.13"
latest: true
---
---
product: DataWeave
version: 2.13
is-latest-version: true
---

# HMAC Variables (dw::util::jwt::HMAC)

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

This module contains variables for the HMAC module.

<table><colgroup><col> <col> <col></colgroup><thead><tr><th>Variable</th><th>Definition</th><th>Description</th></tr></thead><tbody><tr><td><p>algMapping</p></td><td><div><div><p><code>algMapping</code></p></div></div></td><td><div><div><p>Supported HMAC algorithms.</p></div><div><p><em>Introduced in DataWeave version 2.6.0.</em></p></div></div></td></tr><tr><td><p>requiredKeyLengthBits</p></td><td><div><div><p><code>requiredKeyLengthBits</code></p></div></div></td><td><div><div><p>Required key lengths for FIPS 198-1 compliance. NIST recommends HMAC key length &gt;= hash output length.</p></div><div><p><em>Introduced in DataWeave version 2.6.0.</em></p></div></div></td></tr></tbody></table>