jwt token expiration time (asp.net core)

Question

I\'d like to increase the lifetime of JWT token but I can\'t.

I tried googling the matter and found references to JwtBearerOptions.TokenValidationParameters.ClockS

Answer 1

expiration value undefined in token descriptor.

var tokenDescriptor = new SecurityTokenDescriptor
{
   Issuer = _config.GetValidIssuer(),
   Audience = _config.GetValidAudience(),
   SigningCredentials = new SigningCredentials(_config.GetSymmetricSecurityKey(), SecurityAlgorithms.HmacSha256),
   Subject = new ClaimsIdentity(new[]
   {
      new Claim(ClaimTypes.Name, user.UserName),
      new Claim(ClaimTypes.NameIdentifier, user.Id.ToString())
   }),

   // expiration time here...
   Expiration = _config.GetExpiration() // etc
};

Answer 2

var token = new JwtSecurityToken(_config["Jwt:Issuer"], _config["Jwt:Issuer"],  
 claims, expires: DateTime.Now.AddMinutes(120) 

Answer 3

There' a typo in Bayram's answer, so I think I should post mine.

The property Expiration doesn't exist in SecurityTokenDescriptor. It's DateTime? Expires.

DateTime expires = input.RememberMe ? DateTime.UtcNow.AddDays(5) : DateTime.UtcNow.AddMinutes(20);

var tokenDescriptor = new SecurityTokenDescriptor
{
    Expires = expires,
    ...

Works perfectly!