<PackageReference Include="System.Security.Permissions" Version="10.0.3" />

System.Security.Permissions.KeyContainerPermissionAttribute

Allows security actions for KeyContainerPermission to be applied to code using declarative security. This class cannot be inherited.
namespace System.Security.Permissions { public sealed class KeyContainerPermissionAttribute : CodeAccessSecurityAttribute { public string KeyStore { get; set; } public string ProviderName { get; set; } public int ProviderType { get; set; } public string KeyContainerName { get; set; } public int KeySpec { get; set; } public KeyContainerPermissionFlags Flags { get; set; } public KeyContainerPermissionAttribute(SecurityAction action); } }