This little helper might be useful when you are working with ADFS, but want to use the IdentityModel types in your app:

public static ClaimSet ToClaimSet(this SingleSignOnIdentity identity)
{
    List<Claim> claims = new List<Claim>();

    claims.Add(new Claim(identity.NameType, identity.Name, Rights.Identity));

    foreach (SecurityProperty property in identity.SecurityPropertyCollection)
    {
        string claimType = property.Uri;
        if (claimType.EndsWith(“NameValue”))
        {
            claimType = property.Name;
        }

        claims.Add(new Claim(claimType, property.Value, Rights.PossessProperty));
    }

    return new DefaultClaimSet(ClaimSet.System, claims);
}