It won't be added to OpenSSL until it's standardized (see [1]). However there's an external provider available of somewhat dubious quality that adds support for

It won't be added to OpenSSL until it's standardized (see [1]). However there's an external provider available of somewhat dubious quality that adds support for it ([2]). [1] https://github.com/openssl/openssl/issues/11613#issuecomment-886790366 https://github.com/openssl/openssl/issues/11613#issuecomment... [2] https://github.com/J-Montgomery/blake3-prov https://github.com/J-Montgomery/blake3-prov