public bool ValidaToken(string token, out InformacaoToken info)
{
if (string.IsNullOrWhiteSpace(token))
{
info = null;
return(false);
}
var handler = new JwtSecurityTokenHandler();
var parametros = new TokenValidationParameters
{
RequireSignedTokens = true,
IssuerSigningKey = chave,
ValidateAudience = false,
ValidateActor = false,
ValidateIssuer = true,
ValidateIssuerSigningKey = true,
ValidateLifetime = true,
ValidIssuer = issuer
};
try
{
Microsoft.IdentityModel.Tokens.SecurityToken securityToken;
var principal = handler.ValidateToken(token, parametros, out securityToken);
var claim = principal.Claims.First(c => c.Type == ClaimTypes.Authentication);
info = JsonConvert.DeserializeObject <InformacaoToken>(claim.Value);
return(info.IdUsuario > 0);
}
catch (Exception)
{
info = null;
return(false);
}
}
public string CriaToken(InformacaoToken info)
{
var claims = new[]
{
new Claim(ClaimTypes.Authentication, JsonConvert.SerializeObject(info), JsonClaimValueTypes.Json)
};
var handler = new JwtSecurityTokenHandler();
var agora = DateTime.Now;
var valoresToken = new Microsoft.IdentityModel.Tokens.SecurityTokenDescriptor
{
NotBefore = DateTime.Now.AddDays(-1),
Expires = agora.AddMinutes(Convert.ToInt32(ConfigurationManager.AppSettings["ExpiracaoTokenMinutos"] ?? "60")),
IssuedAt = agora,
Issuer = issuer,
Subject = new ClaimsIdentity(claims),
SigningCredentials = new Microsoft.IdentityModel.Tokens.SigningCredentials(
chave, "http://www.w3.org/2001/04/xmldsig-more#hmac-sha256")
};
return(handler.WriteToken(handler.CreateToken(valoresToken)));
}