HMACWith

DataWeave 2.2 is compatible and bundled with Mule 4.2. Standard Support for Mule 4.2 ended on May 2, 2021, and this version of Mule will reach its End of Life on May 2, 2023, when Extended Support ends.

Deployments of new applications to CloudHub that use this version of Mule are no longer allowed. Only in-place updates to applications are permitted.

MuleSoft recommends that you upgrade to the latest version of Mule 4 that is in Standard Support so that your applications run with the latest fixes and security enhancements.

HMACWith(Binary, Binary, String): String

Computes an HMAC hash (with a secret cryptographic key) on input content, then transforms the result into a lowercase, hexadecimal string.

See also, HMACBinary.

Parameters

Name Description

secret

The secret cryptographic key (a Binary) used when encrypting the content).

content

The input content, a Binary value.

algorithm

(Introduced in DataWeave 2.2.0. Supported by Mule 4.2 and later.) The hashing algorithm. By default, HmacSHA1 is used. Other valid values are HmacSHA256 and HmacSHA512.

Example

This example uses HMAC with a secret value to encrypt the input content using the HmacSHA256 algorithm.

Source

%dw 2.0
import dw::Crypto
output application/json
---
{ "HMACWith" : Crypto::HMACWith("secret_key" as Binary, "Some value to hash" as Binary, "HmacSHA256") }

Output

{ "HMACWith": "b51b4fe8c4e37304605753272b5b4321f9644a9b09cb1179d7016c25041d1747" }

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