Tenzir Node v5.27.2

This release adds the hmac function for computing Hash-based Message Authentication Codes over strings and blobs. It also fixes an assertion failure in array slicing that was introduced in v5.27.0.

🚀 Features

Add hmac function

Feb 27, 2026 · @mavam, @codex · #5846

The new experimental hmac function computes Hash-based Message Authentication Codes (HMAC) for strings and blobs. It supports SHA-256 (default), SHA-512, SHA-384, SHA-1, and MD5 algorithms.

Note: The key parameter is currently a plain string because function arguments cannot be secrets yet. We plan to change this in the future.

from {
  signature: hmac("hello world", "my-secret-key"),
}

{
  signature: "90eb182d8396f16d4341d582047f45c0a97d73388c5377d9ced478a2212295ad",
}

Specify a different algorithm with the algorithm parameter:

from {
  signature: hmac("hello world", "my-secret-key", algorithm="sha512"),
}

🐞 Bug Fixes

Fixed an assertion failure in slicing

Feb 27, 2026 · @IyeOnline · #5842

We fixed a bug that would cause an assertion failure “Index error: array slice would exceed array length”. This was introduced as part of an optimization in Tenzir Node v5.27.0.

Download on GitHub

Get the release artifacts and source code.