/// <summary>
/// Creates a new instance of the <see cref="AuthenticatedSessionKeySet"/>
/// class using the supplied Hash Message Authentication Code (HMAC)
/// key material.
/// </summary>
///
/// <param name="hmacAlgorithmName">
/// The well-known algorithm name for the HMAC primitive to be used to
/// ensure envelope integrity and authentication.
/// </param>
///
/// <param name="hmacKeyMaterial">
/// The key material that will be used to construct the HMAC primitive.
/// </param>
///
/// <exception cref="ArgumentException">
/// The <paramref name="hmacAlgorithmName"/> or
/// <paramref name="hmacKeyMaterial"/> parameter is <b>null</b> or empty,
/// or the key material bytes are all zeros.
/// </exception>
///
internal AuthenticatedSessionKeySet(
string hmacAlgorithmName,
byte[] hmacKeyMaterial)
{
HmacAlgorithmName = hmacAlgorithmName;
_hmac = new CryptoHmac(HmacAlgorithmName, hmacKeyMaterial);
}
/// <summary>
/// Calls the CardSpace service and establishes the client side of the
/// authenticated session.
/// </summary>
///
internal void GetToken()
{
SharedSecret = new CryptoHmac();
}