public NCA3(BinaryReader br)
{
RSASig_0 = br.ReadBytes(0x100);
RSASig_1 = br.ReadBytes(0x100);
if ((Magic = new string(br.ReadChars(4))) != "NCA3")
{
throw new ApplicationException("Magic NCA3 not found!");
}
IsGameCard = br.ReadBoolean();
ContentType = br.ReadByte();
CryptoType = br.ReadByte();
KeyIndex = br.ReadByte();
Size = br.ReadUInt64();
TitleID = br.ReadUInt64();
br.ReadBytes(4); //padding?
SDKVersion = br.ReadUInt32();
CryptoType2 = br.ReadByte();
br.ReadBytes(15); //padding?
RightsID = br.ReadBytes(0x10);
List <SectionTableEntry> SectionTableEntries = new List <SectionTableEntry>();
for (var i = 0; i < 4; i++)
{
SectionTableEntries.Add(new SectionTableEntry(br));
}
HashTable = new List <byte[]>();
for (var i = 0; i < 4; i++)
{
HashTable.Add(br.ReadBytes(0x20));
}
var keyblob = new BinaryReader(new MemoryStream(AES.DecryptKeyArea(br, KeyIndex)));
KeyArea = new List <byte[]>();
for (var i = 0; i < 4; i++)
{
KeyArea.Add(keyblob.ReadBytes(0x10));
}
keyblob.Close();
//Section header block
br.BaseStream.Position = 0x400;
br.ReadBytes(3); //???
var fsType = br.ReadByte();
var cryptoType = br.ReadByte();
br.ReadBytes(3);
//dont really need this stuff. Might finish later for completion
UInt64 offsetRel = 0;
UInt64 pfs0ActualSize = 0;
if (fsType == 2)
{
//PFS0 superblock
br.ReadBytes(0x38);
offsetRel = br.ReadUInt64();
pfs0ActualSize = br.ReadUInt64();
}
else if (fsType == 3)
{
//ROMFS superblock
br.ReadBytes(0xE8);
}
br.BaseStream.Position = SectionTableEntries[0].MediaOffset;
int contSize = (int)(SectionTableEntries[0].MediaEndOffset - SectionTableEntries[0].MediaOffset);
byte[] iv = new byte[0x10];
Array.Copy(BitConverter.GetBytes(SectionTableEntries[0].MediaOffset >> 4), 0, iv, 0, 4);
Array.Reverse(iv);
var dec_cont = AES.CTRMode(br, contSize, KeyArea[cryptoType == 3 ? 2 : 0], iv);
dec_cont.ReadBytes((int)offsetRel);
pfs0 = new PFS0(dec_cont);
}
public NCA3(string filename) : this(AES.DecryptHeader(File.ReadAllBytes(filename)))
{
}