static public void Print(Formatter formatter, string curveName)
{
CurveNames curveEnum = GetCurveName(curveName);
ECParams ecp = ECRecommendedParameters.ecParams[(int)curveEnum];
ecp.Oid = ECRecommendedParameters.OID[(int)curveEnum];
formatter.PrintText("OID", ecp.Oid);
formatter.PrintBigInteger("p", "UCHAR", null, (ecp.parameters.Curve as FpCurve).Q);
formatter.PrintBigInteger("a", "UCHAR", null, ecp.parameters.Curve.A.ToBigInteger());
formatter.PrintBigInteger("b", "UCHAR", null, ecp.parameters.Curve.B.ToBigInteger());
formatter.PrintBigInteger("n", "UCHAR", null, ecp.parameters.N);
formatter.PrintBigInteger("h", "UCHAR", null, ecp.parameters.H);
formatter.PrintPoint("g", "UCHAR", null, ecp.parameters.G as FpPoint);
// g_1 ... g_n
for (int i = 1; i <= NumberOfPregeneratedGenerators; i++)
{
formatter.PrintPoint("g" + i, "UCHAR", null, ecp.g_i[i - 1], ecp.counter[i - 1]);
}
// g_t
formatter.PrintPoint("gt", "UCHAR", null, ecp.g_t, ecp.counter_t);
// g_d
formatter.PrintPoint("gd", "UCHAR", null, ecp.g_d, ecp.counter_d);
}
internal static void Print(Formatter formatter, string groupName)
{
SGNames sgNameEnum = GetSGName(groupName);
SGParams sgp = SubgroupRecommendedParameters.sgParams[(int)sgNameEnum];
sgp.Oid = SubgroupRecommendedParameters.OID[(int)sgNameEnum];
formatter.PrintText("OID", "UCHAR", null, sgp.Oid);
formatter.PrintBigInteger("p", "UCHAR", null, sgp.p);
formatter.PrintBigInteger("q", "UCHAR", null, sgp.q);
formatter.PrintBigInteger("g", "UCHAR", null, sgp.g);
formatter.PrintHex("domainParamSeed", "UCHAR", null, sgp.domain_parameter_seed);
formatter.PrintBigInteger("e", "UCHAR", null, sgp.e);
// g_1 ... g_n
for (int i = 1; i <= NumberOfPregeneratedGenerators; i++)
{
formatter.PrintBigInteger("g" + i, "UCHAR", null, sgp.g_i[i - 1], sgp.counter[i - 1]);
}
// g_t
formatter.PrintBigInteger("gt", "UCHAR", null, sgp.g_t, sgp.counter_t);
// g_d
formatter.PrintBigInteger("gd", "UCHAR", null, sgp.g_d, sgp.counter_d);
}
/// <summary>
/// Generates the recommeded parameters.
/// </summary>
/// <param name="args">Output directory.</param>
static void Main(string[] args)
{
string outputPath;
if (args != null && args.Length > 1)
{
outputPath = args[0];
if (!Directory.Exists(outputPath))
{
throw new ArgumentException(outputPath + " does not exist");
}
}
else
{
outputPath = Directory.GetCurrentDirectory();
}
System.IO.StreamWriter writer = null;
try
{
foreach (Formatter.Type formatterType in formatterTypes)
{
foreach (string groupName in groupNames)
{
string outputFile = Path.Combine(outputPath, "recommendedparams_" + groupName + "_" + formatterType + ".txt");
writer = new System.IO.StreamWriter(outputFile);
Formatter formater = new Formatter(formatterType, writer);
formater.PrintText("U-Prove Recommended Parameters (" + groupName + ")");
if (groupName.StartsWith("L"))
{
SubgroupRecommendedParameters.Print(formater, groupName);
}
else
{
ECRecommendedParameters.Print(formater, groupName);
}
Console.WriteLine("recommended parameters " + groupName + " written to " + outputFile);
writer.Close();
writer = null;
}
}
}
catch (Exception e)
{
Console.Error.WriteLine(e.Message);
Console.Error.WriteLine(e.StackTrace);
}
finally
{
if (writer != null)
{
writer.Close();
}
}
Console.WriteLine("completed");
Console.ReadLine();
}
