The CNG engine is an OpenSSL 3.x engine designed to integrate the Windows Cryptography API: Next Generation (CNG) with OpenSSL-based applications. It serves as a drop-in replacement for the legacy OpenSSL Cryptography API (CAPI) engine.

Key Features

Compared to the CAPI engine, the CNG engine offers several enhancements:

Non-commercial Edition

A non-commercial edition is available for testing, personal, educational, or research purposes only.

File Name Size Date
cng-engine-1.1-non-commercial.zip 72056 8th September 2024
cng-engine-1.0-non-commercial.zip 33545 2nd July 2024
cng-engine-1.0-non-commercial-multiarch.zip 69426 23rd July 2024

Please refer to the non-commercial license for detailed terms and conditions. For a commercial license, please contact us.

Compatibility with the OpenSSL CAPI Engine

New Engine Control Commands

Supported CAPI Engine Control Commands

Unsupported CAPI Engine Control Commands

Unsupported CAPI Engine Features

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