<PackageReference Include="System.Security.Cryptography.Cng" Version="5.0.0-preview.2.20160.6" />

System.Security.Cryptography.AesCng

public sealed class AesCng : Aes
Provides a Cryptography Next Generation (CNG) implementation of the Advanced Encryption Standard (AES) algorithm.
namespace System.Security.Cryptography { public sealed class AesCng : Aes { public AesCng(); public AesCng(string keyName); public AesCng(string keyName, CngProvider provider); public AesCng(string keyName, CngProvider provider, CngKeyOpenOptions openOptions); } }