public string ToString(string format)
{
if (fDisposed)
{
throw new ObjectDisposedException("this");
}
IntPtr str = IntPtr.Zero;
if (format.ToLower() == "d")
{
str = OpenSSL.BN_bn2dec(fBigNum);
}
else if (format.ToLower() == "x")
{
str = OpenSSL.BN_bn2hex(fBigNum);
}
else
{
throw new FormatException();
}
string res = Marshal.PtrToStringAnsi(str);
OpenSSL.CRYPTO_free(str);
return(res);
}