private string GenerateToken(ClaimsIdentity identity)
{
var now = DateTime.UtcNow;
var jwt = new JwtSecurityToken(
issuer: AuthOptions.ISSUER,
audience: AuthOptions.AUDIENCE,
notBefore: now,
claims: identity.Claims,
expires: now.Add(TimeSpan.FromMinutes(AuthOptions.LIFETIME)),
signingCredentials: new SigningCredentials(AuthOptions.GetSummetricSecurityKey(), SecurityAlgorithms.HmacSha256));
return(new JwtSecurityTokenHandler().WriteToken(jwt));
}