Intel Keem Bay OCS crypto accelerators (AES, HCU, ECC)
On-chip cryptography engines (AES, hashing, and elliptic-curve units) built into Intel's Keem Bay system-on-chip, also sold as the Gen 3 Movidius 3700VC vision processing unit. It is a niche edge AI and computer-vision part launched in early 2023, used in low-volume embedded and vision appliances rather than mainstream servers or PCs.
recommendation
Worth keeping but flagging its niche: the engines only appear on Intel's Keem Bay / Gen 3 Movidius 3700VC vision SoC, a low-volume edge AI part launched in early 2023 and still sold. Upstream activity is real but thin — Herbert Xu was applying fixes in mid-2025, and a February 2026 patch proposed marking the AES/SM4 driver orphan after its maintainer stepped away. No other driver covers these blocks, so removal would strand users; the code should stay with a note about maintainer-attrition risk.
repository signals
sources
- intel.com
Intel ARK still listed a Keem Bay family product recently; family is tied to Gen 3 Intel Movidius 3700VC.
- intel.com
Intel lists Gen 3 Intel Movidius 3700VC as code name 'Products formerly Keem Bay', launch Q1'23, marketing status 'Launched', indicating niche hardware still marketed after 2025 rather than long-obsolete.
- spinics.net
Keembay crypto fixes were still being reviewed and applied upstream in July 2025, showing active maintenance rather than removal.
- spinics.net
Another Keembay crypto fix was applied in August 2025, reinforcing ongoing bug-fix traffic.
- spinics.net
In February 2026 a MAINTAINERS patch said the Keem Bay OCS AES/SM4 crypto driver had no replacement maintainer and should be marked orphan, indicating maintainer attrition risk but not code-removal discussion.
codex reasoning notes (technical)
Real driver directory: local `rg` via exec_command found platform_driver/module_platform_driver entries for AES/HCU/ECC blocks. Upstream activity came from web search because `lei` was unavailable: spinics URLs show 2025 fixes applied by Herbert Xu, so this is not dormant and should not be deprecated now. Deployment outlook is low: Intel ARK/spec pages obtained by web search identify Keem Bay as the Movidius 3700VC edge/vision part, launched in Q1 2023 and still listed, which suggests niche ongoing deployments rather than mass-market volume. No natural successor driver covers the same on-die crypto engines; maintainer-orphan signal from the 2026 MAINTAINERS patch argues for annotation/watchfulness, not removal.