ML-KEM: Windows support

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#116,304 opened on Jun 4, 2025 2 comments 0 reactions 1 assignee View on GitHub

@vcsjones is already working on this.

Since Jun 4, 2025.

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This issue has not been assessed yet.

Description

area-System.Security

ML-KEM will be fully available in a future Windows Insider build. This issue is to track the enablement of ML-KEM on Windows:

The private implementation, MLKemImplementation which is returned from the factory methods, will be based on Win32 bcrypt
Introducing MLKemCng and other surrounding CNG changes, which will be based on Win32 ncrypt
- Primitive functionality. Encapsulate, Decapsulate, Export
- X.509 functionality: CopyWithPrivateKey, GetMLKemPrivateKey
- PKCS#12
- Exporting non-plaintext-only CNG keys

Dominant language: C#
Stars: 18.3k
Forks: 5.6k
PR merge metrics: PR metrics pending

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