std::string
DMYWCalendarService< C, W, O >::JDToDate( std::string calendarName,
CalendarService::Format format )
{
CGIInput & cgiInput = CGIInput::Instance();
long julianDay = std::atol( cgiInput[ "julianDay" ].c_str() );
int day, month;
long year;
C::JulianDayToDMY( julianDay, &day, &month, &year );
int dayOfWeek = (int)ModP( (julianDay + W::DayOfWeekOfJD0()),
(long)W::DaysInWeek() );
std::string options = O::Get( format );
switch ( format )
{
case CalendarService::JSON:
{
JSONObject jsonObj;
jsonObj[ "calendar" ] = ToJSON( calendarName );
jsonObj[ "options" ] = options;
jsonObj[ "julianDay" ] = ToJSON( julianDay );
jsonObj[ "day" ] = ToJSON( day );
jsonObj[ "month" ] = ToJSON( month );
jsonObj[ "year" ] = ToJSON( year );
jsonObj[ "dayOfWeek" ] = ToJSON( dayOfWeek );
return ToJSON( jsonObj );
}
default:
throw Exception( "Unexpected format" );
}
}
string
HinduLunisolarCalendarService::JDToDate( string calendarName,
CalendarService::Format format )
{
CGIInput & cgiInput = CGIInput::Instance();
long julianDay = atol( cgiInput[ "julianDay" ].c_str() );
int day, month;
long year;
bool dayLeap, monthLeap;
HinduLunisolarCalendar::JulianDayToDLMLY( julianDay,
&day, &dayLeap, &month,
&monthLeap, &year );
int dayOfWeek = (int)ModP( (julianDay + HinduWeek::DayOfWeekOfJD0()),
(long)HinduWeek::DaysInWeek() );
switch ( format )
{
case CalendarService::JSON:
{
JSONObject jsonObj;
jsonObj[ "calendar" ] = ToJSON( calendarName );
jsonObj[ "julianDay" ] = ToJSON( julianDay );
jsonObj[ "day" ] = ToJSON( day );
jsonObj[ "dayLeap" ] = ToJSON( dayLeap );
jsonObj[ "month" ] = ToJSON( month );
jsonObj[ "monthLeap" ] = ToJSON( monthLeap );
jsonObj[ "year" ] = ToJSON( year );
jsonObj[ "dayOfWeek" ] = ToJSON( dayOfWeek );
return ToJSON( jsonObj );
}
default:
throw Exception( "Unexpected format" );
}
}
Point ECDSA::Double(Point P) {
Point r;
BigInt numerator = BigInt(3) * (P.x ^ 2) + a;
numerator = ModP(numerator);
BigInt denominator = BigInt(2) * P.y;
denominator = ModP(denominator);
BigInt lambda = numerator * Inverse(denominator);
lambda = ModP(lambda);
r.x = (lambda ^ BigInt(2)) - (BigInt(2) * P.x);
r.x = ModP(r.x);
r.y = (lambda * (P.x - r.x)) - P.y;
r.y = ModP(r.y);
return r;
}
Point ECDSA::Add(Point P, Point Q) {
Point r;
BigInt numerator = Q.y - P.y;
numerator = ModP(numerator);
BigInt denominator = Q.x - P.x;
denominator = ModP(denominator);
BigInt lambda = numerator * Inverse(denominator);
lambda = ModP(lambda);
r.x = (lambda ^ BigInt(2)) - P.x - Q.x;
r.x = ModP(r.x);
r.y = (lambda * (P.x - r.x)) - P.y;
r.y = ModP(r.y);
return r;
}