public NcaHeader(BinaryReader reader, Keyset keyset)
{
Signature1 = reader.ReadBytes(0x100);
Signature2 = reader.ReadBytes(0x100);
Magic = reader.ReadAscii(4);
if (Magic != "NCA3")
{
throw new InvalidDataException("Not an NCA3 file");
}
reader.BaseStream.Position -= 4;
SignatureData = reader.ReadBytes(0x200);
FixedSigValidity = Crypto.Rsa2048PssVerify(SignatureData, Signature1, keyset.NcaHdrFixedKeyModulus);
reader.BaseStream.Position -= 0x200 - 4;
Distribution = (DistributionType)reader.ReadByte();
ContentType = (ContentType)reader.ReadByte();
CryptoType = reader.ReadByte();
KaekInd = reader.ReadByte();
NcaSize = reader.ReadInt64();
TitleId = reader.ReadUInt64();
reader.BaseStream.Position += 4;
SdkVersion = new TitleVersion(reader.ReadUInt32());
CryptoType2 = reader.ReadByte();
reader.BaseStream.Position += 0xF;
RightsId = reader.ReadBytes(0x10);
for (int i = 0; i < 4; i++)
{
SectionEntries[i] = new NcaSectionEntry(reader);
}
for (int i = 0; i < 4; i++)
{
SectionHashes[i] = reader.ReadBytes(0x20);
}
for (int i = 0; i < 4; i++)
{
EncryptedKeys[i] = reader.ReadBytes(0x10);
}
reader.BaseStream.Position += 0xC0;
for (int i = 0; i < 4; i++)
{
FsHeaders[i] = new NcaFsHeader(reader);
}
}
public Package2Header(IStorage storage, Keyset keyset, int keyGeneration)
{
var reader = new BinaryReader(storage.AsStream());
byte[] key = keyset.Package2Keys[keyGeneration];
Signature = reader.ReadBytes(0x100);
byte[] sigData = reader.ReadBytes(0x100);
SignatureValidity = Crypto.Rsa2048PssVerify(sigData, Signature, keyset.Package2FixedKeyModulus);
reader.BaseStream.Position -= 0x100;
Counter = reader.ReadBytes(0x10);
Stream headerStream = new CachedStorage(new Aes128CtrStorage(storage.Slice(0x100), key, Counter, true), 0x4000, 4, true).AsStream();
headerStream.Position = 0x10;
reader = new BinaryReader(headerStream);
for (int i = 0; i < 4; i++)
{
SectionCounters[i] = reader.ReadBytes(0x10);
}
Magic = reader.ReadAscii(4);
BaseOffset = reader.ReadInt32();
reader.BaseStream.Position += 4;
VersionMax = reader.ReadByte();
VersionMin = reader.ReadByte();
reader.BaseStream.Position += 2;
for (int i = 0; i < 4; i++)
{
SectionSizes[i] = reader.ReadInt32();
}
for (int i = 0; i < 4; i++)
{
SectionOffsets[i] = reader.ReadInt32();
}
for (int i = 0; i < 4; i++)
{
SectionHashes[i] = reader.ReadBytes(0x20);
}
}
internal void ValidateNpdmSignature(byte[] modulus)
{
NpdmSigValidity = Crypto.Rsa2048PssVerify(SignatureData, Signature2, modulus);
}