public override Dictionary <string, string> Answer(byte[] secret)
{
byte[] mac_key = DiffieHellmanUtil.SHAHashXorSecret(DiffieHellmanUtil.Lookup(Protocol, SessionType),
dh, consumerPublicKey, secret);
var nvc = new Dictionary <string, string>();
nvc.Add(Protocol.openidnp.dh_server_public, DiffieHellmanUtil.UnsignedToBase64(dh.CreateKeyExchange()));
nvc.Add(Protocol.openidnp.enc_mac_key, Convert.ToBase64String(mac_key));
return(nvc);
}
void initializeAssociation()
{
string assoc_type = Util.GetRequiredArg(Args, Protocol.openidnp.assoc_type);
if (Array.IndexOf(Protocol.Args.SignatureAlgorithm.All, assoc_type) >= 0)
{
byte[] secret;
string session_type;
if (!Args.TryGetValue(Protocol.openidnp.session_type, out session_type) ||
Protocol.Args.SessionType.NoEncryption.Equals(session_type, StringComparison.Ordinal))
{
secret = getDecoded(Protocol.openidnp.mac_key);
}
else
{
try {
byte[] dh_server_public = getDecoded(Protocol.openidnp.dh_server_public);
byte[] enc_mac_key = getDecoded(Protocol.openidnp.enc_mac_key);
secret = DiffieHellmanUtil.SHAHashXorSecret(DiffieHellmanUtil.Lookup(Protocol, session_type), DH, dh_server_public, enc_mac_key);
} catch (ArgumentException ex) {
throw new OpenIdException(string.Format(CultureInfo.CurrentCulture,
Strings.InvalidOpenIdQueryParameterValue,
Protocol.openid.session_type, session_type), ex);
}
}
string assocHandle = Util.GetRequiredArg(Args, Protocol.openidnp.assoc_handle);
TimeSpan expiresIn = new TimeSpan(0, 0, Convert.ToInt32(Util.GetRequiredArg(Args, Protocol.openidnp.expires_in), CultureInfo.InvariantCulture));
try {
Association = HmacShaAssociation.Create(Protocol, assoc_type,
assocHandle, secret, expiresIn);
} catch (ArgumentException ex) {
throw new OpenIdException(string.Format(CultureInfo.CurrentCulture,
Strings.InvalidOpenIdQueryParameterValue,
Protocol.openid.assoc_type, assoc_type), ex);
}
}
else
{
throw new OpenIdException(string.Format(CultureInfo.CurrentCulture,
Strings.InvalidOpenIdQueryParameterValue,
Protocol.openid.assoc_type, assoc_type));
}
}