public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
{
string clientId = string.Empty;
string clientSecret = string.Empty;
string symmetricBase64Key = string.Empty;
if (!context.TryGetBasicCredentials(out clientId, out clientSecret))
{
context.TryGetFormCredentials(out clientId, out clientSecret);
}
if (context.ClientId == null)
{
context.SetError("invalid_clientId", "Client Id is not set.");
return(Task.FromResult <object>(null));
}
var audience = AudienceStore.GetTestAudience();
if (context.ClientId != audience.ClientId)
{
context.SetError("invalid_clientId", string.Format("Client Id '{0}' is not valid.", context.ClientId));
return(Task.FromResult <object>(null));
}
context.Validated();
return(Task.FromResult <object>(null));
}
public string Protect(AuthenticationTicket data)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
string audienceId = data.Properties.Dictionary.ContainsKey(AudiencePropertyKey) ? data.Properties.Dictionary[AudiencePropertyKey] : null;
if (string.IsNullOrWhiteSpace(audienceId))
{
throw new InvalidOperationException("AuthenticationTicket.Properties does not include audience");
}
// gets the test audience for the signing.
Audience audience = AudienceStore.GetTestAudience();
string symmetricKeyAsBase64 = audience.Base64Secret;
var keyByteArray = TextEncodings.Base64Url.Decode(symmetricKeyAsBase64);
var signingKey = new SigningCredentials(new SymmetricSecurityKey(keyByteArray), "HS256");
var issued = data.Properties.IssuedUtc;
var expires = data.Properties.ExpiresUtc;
var token = new JwtSecurityToken(_issuer, audienceId, data.Identity.Claims, issued.Value.UtcDateTime, expires.Value.UtcDateTime, signingKey);
var handler = new JwtSecurityTokenHandler();
var jwt = handler.WriteToken(token);
return(jwt);
}