public static void GetNcchAesCounter(ref byte[] counter, NCCH ncch, NcchSection type)
{
counter = new byte[16];
if (ncch.Header.Version == 2 || ncch.Header.Version == 0)
{
Array.Copy(ReverseByteArray(ncch.Header.TitleID), 0, counter, 0, 8);
counter[8] = (byte)type;
}
else if (ncch.Header.Version == 1)
{
long num = 0;
switch (type)
{
case NcchSection.exheader:
num = 0x200;
break;
case NcchSection.exefs:
num = ncch.Header.ExeFSOffset * 0x200;
break;
case NcchSection.romfs:
num = ncch.Header.RomFSOffset * 0x200;
break;
}
Array.Copy(ReverseByteArray(ncch.Header.TitleID), 0, counter, 0, 8);
for (int i = 0; i < 4; i++)
{
counter[i + 12] = (byte)((num >> ((3 - i) * 8)) & 0xFF);
}
}
}
public NCCHInfoEntry(NCCH ncch, int PartitionIndex, NcchSection type, Encoding encoding, int use7x, string sectionname)
{
NCCHInfo.GetNcchAesCounter(ref Counter, ncch, type);
Array.Copy(ncch.Header.NCCHHeaderSignature, 0, KeyY, 0, 16);
if ((ncch.Header.Flags[7] & 0x20) == 0x20)
{
if ((type == NcchSection.romfs) || ((type == NcchSection.exefs) && (use7x == 1)))
{
Array.Copy(NCCHInfo.SEED.KeyY, 0, KeyY, 0, 16);
}
}
switch (type)
{
case NcchSection.exefs:
Size = NCCHInfo.roundUp((int)ncch.Header.ExeFSLength * 0x200, 1024 * 1024) / (1024 * 1024);
break;
case NcchSection.exheader:
Size = NCCHInfo.roundUp((int)ncch.Header.ExtendedHeaderSize * 0x200, 1024 * 1024) / (1024 * 1024);
break;
case NcchSection.romfs:
Size = NCCHInfo.roundUp((int)ncch.Header.RomFSLength * 0x200, 1024 * 1024) / (1024 * 1024);
break;
}
using (MemoryStream ms = new MemoryStream())
{
BinaryWriter writer = new BinaryWriter(ms, encoding);
string path = "";
if (encoding == Encoding.Unicode)
path = string.Format("sdmc:/{0:X16}.{1}.{2}.xorpad", BitConverter.ToUInt64(ncch.Header.TitleID, 0), PartitionName[PartitionIndex], sectionname);
else if (encoding == Encoding.UTF8)
path = string.Format("/{0:X16}.{1}.{2}.xorpad", BitConverter.ToUInt64(ncch.Header.TitleID, 0), PartitionName[PartitionIndex], sectionname);
writer.Write(path.ToCharArray());
Array.Copy(ms.ToArray(), 0, FileName, 0, ms.Length);
}
Use7x = use7x;
}