RredCat

internal class TokenHandler : AuthenticationHandler
{
    private const ulong _REQUEST_MAX_AGE_IN_SECONDS = 300; //5 mins
    private const string _AUTHENTICATION_SCHEME = "amx";

    private static readonly DateTime _1970 = new DateTime(1970, 01, 01, 0, 0, 0, 0, DateTimeKind.Utc);
    private static readonly Dictionary _AllowedApps = new Dictionary();
    private readonly IMemoryCache _cache;

    public TokenHandler(IMemoryCache memoryCache, IOptionsMonitor options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock)

RredCat

services.AddAuthentication(o => o.AddScheme("api", a => a.HandlerType = typeof(TokenHandler)));

RredCat

[Authorize(AuthenticationSchemes = "api")]