Cryptography.
the OpenSSL version on the machine we see that it is 3.0.0: PS C:\python3\dotnet\chacha20> openssl version OpenSSL 3.0.0 7 sep 2021 (Library: OpenSSL 3.0.0 7 sep 2021) and where SHA-3 should be supported: PS C:\python3\dotnet\chacha20> openssl list -digest-algorithms Legacy: RSA-MD4 => MD4 RSA-MD5