NVIDIA Tegra234 Security Engine crypto accelerator
Hardware AES and hash acceleration block built into NVIDIA's Tegra234 system-on-chip, which powers the Jetson AGX Orin, Orin NX, and Orin Nano embedded modules used in robotics, edge AI, and autonomous machine designs from 2022 onward.
recommendation
It should stay in the kernel because the Tegra Security Engine is the cryptographic offload block on NVIDIA's current Jetson Orin modules, which NVIDIA's own lifecycle page lists as available through 2032 or later. The driver was only added upstream in 2024 and is still receiving substantive bug fixes into 2025 and 2026, with no replacement covering the same role.
repository signals
sources
- lwn.net
The driver was added upstream in 2024 as the Tegra Security Engine driver for AES and HASH acceleration, so it is a recent, not legacy, in-tree driver.
- spinics.net
A March 2026 patch fixes a real crash-causing issue in the Tegra crypto driver and targets crypto/master, showing active upstream maintenance rather than abandonment.
- spinics.net
There was additional functional bug-fix traffic for the driver in 2025, indicating ongoing review and correction work.
- developer.nvidia.com
NVIDIA's Jetson lifecycle page lists Jetson AGX Orin, Orin NX, and Orin Nano modules as available through 2032 or later, so the underlying Tegra234 family is still commercially current.
- nvidia.com
NVIDIA markets Jetson Orin as current production modules, supporting the conclusion that this hardware remains in new deployments.
codex reasoning notes (technical)
Local exec_command inspection showed this is real platform-driver code and currently matches only tegra234 compatibles (nvidia,tegra234-se-aes/hash), i.e. Jetson Orin-era hardware. Local git log via exec_command showed steady substantive fixes from 2024-04-12 through 2026-03-26. Web search found the 2024 introduction thread (LWN archive) plus 2025/2026 patch traffic on spinics, but no removal/deprecation discussion; that absence is an inference from the search results, not a direct source. Web search also found NVIDIA lifecycle and Jetson Orin product pages confirming the family is still sold for new designs. No natural upstream replacement driver covers the same Tegra SE offload role, so removal/deprecation is not indicated.