NCA reading improvements

Add on-the-fly Partition FS hash verification
Do some cleanup on NCA classes

LibHac/Bktr.cs

@@ -23,12 +23,12 @@ namespace LibHac
             Patch = patchRomfs ?? throw new NullReferenceException($"{nameof(patchRomfs)} cannot be null");
             Base = baseRomfs ?? throw new NullReferenceException($"{nameof(baseRomfs)} cannot be null");
 
-            IvfcLevelHeader level5 = section.Header.Bktr.IvfcHeader.LevelHeaders[5];
+            IvfcLevelHeader level5 = section.Header.IvfcInfo.LevelHeaders[5];
             Length = level5.LogicalOffset + level5.HashDataSize;
 
             using (var reader = new BinaryReader(patchRomfs, Encoding.Default, true))
             {
-                patchRomfs.Position = section.Header.Bktr.RelocationHeader.Offset;
+                patchRomfs.Position = section.Header.BktrInfo.RelocationHeader.Offset;
                 RelocationBlock = new RelocationBlock(reader);
             }
 

LibHac/BktrCryptoStream.cs

@@ -8,15 +8,15 @@ namespace LibHac
 {
     public class BktrCryptoStream : Aes128CtrStream
     {
-        public SubsectionBlock SubsectionBlock { get; }
+        public AesSubsectionBlock AesSubsectionBlock { get; }
-        private List<SubsectionEntry> SubsectionEntries { get; } = new List<SubsectionEntry>();
+        private List<AesSubsectionEntry> SubsectionEntries { get; } = new List<AesSubsectionEntry>();
         private List<long> SubsectionOffsets { get; }
-        private SubsectionEntry CurrentEntry { get; set; }
+        private AesSubsectionEntry CurrentEntry { get; set; }
 
-        public BktrCryptoStream(Stream baseStream, byte[] key, long offset, long length, long counterOffset, byte[] ctrHi, BktrSuperblock bktr)
+        public BktrCryptoStream(Stream baseStream, byte[] key, long offset, long length, long counterOffset, byte[] ctrHi, BktrPatchInfo bktr)
             : base(baseStream, key, offset, length, counterOffset, ctrHi)
         {
-            BktrHeader header = bktr.SubsectionHeader;
+            BktrHeader header = bktr.EncryptionHeader;
             byte[] subsectionBytes;
             using (var streamDec = new RandomAccessSectorStream(new Aes128CtrStream(baseStream, key, offset, length, counterOffset, ctrHi)))
             {
@@ -27,16 +27,16 @@ namespace LibHac
 
             using (var reader = new BinaryReader(new MemoryStream(subsectionBytes)))
             {
-                SubsectionBlock = new SubsectionBlock(reader);
+                AesSubsectionBlock = new AesSubsectionBlock(reader);
             }
 
-            foreach (SubsectionBucket bucket in SubsectionBlock.Buckets)
+            foreach (AesSubsectionBucket bucket in AesSubsectionBlock.Buckets)
             {
                 SubsectionEntries.AddRange(bucket.Entries);
             }
 
             // Add a subsection for the BKTR headers to make things easier
-            var headerSubsection = new SubsectionEntry
+            var headerSubsection = new AesSubsectionEntry
             {
                 Offset = bktr.RelocationHeader.Offset,
                 Counter = (uint)(ctrHi[4] << 24 | ctrHi[5] << 16 | ctrHi[6] << 8 | ctrHi[7]),
@@ -92,7 +92,7 @@ namespace LibHac
             return totalBytesRead;
         }
 
-        private SubsectionEntry GetSubsectionEntry(long offset)
+        private AesSubsectionEntry GetSubsectionEntry(long offset)
         {
             int index = SubsectionOffsets.BinarySearch(offset);
             if (index < 0) index = ~index - 1;

LibHac/BktrStructs.cs

@@ -75,15 +75,15 @@ namespace LibHac
         }
     }
 
-    public class SubsectionBlock
+    public class AesSubsectionBlock
     {
         public uint Field0;
         public int BucketCount;
         public long Size;
         public long[] BaseOffsets;
-        public SubsectionBucket[] Buckets;
+        public AesSubsectionBucket[] Buckets;
 
-        public SubsectionBlock(BinaryReader reader)
+        public AesSubsectionBlock(BinaryReader reader)
         {
             long start = reader.BaseStream.Position;
 
@@ -91,7 +91,7 @@ namespace LibHac
             BucketCount = reader.ReadInt32();
             Size = reader.ReadInt64();
             BaseOffsets = new long[BucketCount];
-            Buckets = new SubsectionBucket[BucketCount];
+            Buckets = new AesSubsectionBucket[BucketCount];
 
             for (int i = 0; i < BucketCount; i++)
             {
@@ -102,47 +102,47 @@ namespace LibHac
 
             for (int i = 0; i < BucketCount; i++)
             {
-                Buckets[i] = new SubsectionBucket(reader);
+                Buckets[i] = new AesSubsectionBucket(reader);
             }
         }
     }
 
-    public class SubsectionBucket
+    public class AesSubsectionBucket
     {
         public int BucketNum;
         public int EntryCount;
         public long VirtualOffsetEnd;
-        public SubsectionEntry[] Entries;
+        public AesSubsectionEntry[] Entries;
-        public SubsectionBucket(BinaryReader reader)
+        public AesSubsectionBucket(BinaryReader reader)
         {
             long start = reader.BaseStream.Position;
 
             BucketNum = reader.ReadInt32();
             EntryCount = reader.ReadInt32();
             VirtualOffsetEnd = reader.ReadInt64();
-            Entries = new SubsectionEntry[EntryCount];
+            Entries = new AesSubsectionEntry[EntryCount];
 
             for (int i = 0; i < EntryCount; i++)
             {
-                Entries[i] = new SubsectionEntry(reader);
+                Entries[i] = new AesSubsectionEntry(reader);
             }
 
             reader.BaseStream.Position = start + 0x4000;
         }
     }
 
-    public class SubsectionEntry
+    public class AesSubsectionEntry
     {
         public long Offset;
         public uint Field8;
         public uint Counter;
 
-        public SubsectionEntry Next;
+        public AesSubsectionEntry Next;
         public long OffsetEnd;
 
-        public SubsectionEntry() { }
+        public AesSubsectionEntry() { }
 
-        public SubsectionEntry(BinaryReader reader)
+        public AesSubsectionEntry(BinaryReader reader)
         {
             Offset = reader.ReadInt64();
             Field8 = reader.ReadUInt32();

LibHac/IntegrityVerificationStream.cs

@@ -19,7 +19,7 @@ namespace LibHac
         private readonly SHA256 _hash = SHA256.Create();
 
         public IntegrityVerificationStream(IntegrityVerificationInfo info, Stream hashStream, bool enableIntegrityChecks)
-            : base(info.Data, 1 << info.BlockSizePower)
+            : base(info.Data, info.BlockSize)
         {
             HashStream = hashStream;
             EnableIntegrityChecks = enableIntegrityChecks;
@@ -61,6 +61,9 @@ namespace LibHac
             HashStream.Read(_hashBuffer, 0, DigestSize);
 
             int bytesRead = base.Read(buffer, 0, count);
+            int bytesToHash = SectorSize;
+
+            if (bytesRead == 0) return 0;
 
             // If a hash is zero the data for the entire block is zero
             if (Type == IntegrityStreamType.Save && _hashBuffer.IsEmpty())
@@ -73,6 +76,12 @@ namespace LibHac
             {
                 // Pad out unused portion of block
                 Array.Clear(buffer, bytesRead, SectorSize - bytesRead);
+
+                // Partition FS hashes don't pad out an incomplete block
+                if (Type == IntegrityStreamType.PartitionFs)
+                {
+                    bytesToHash = bytesRead;
+                }
             }
 
             if (!EnableIntegrityChecks) return bytesRead;
@@ -84,7 +93,7 @@ namespace LibHac
                 _hash.TransformBlock(Salt, 0, Salt.Length, null, 0);
             }
 
-            _hash.TransformBlock(buffer, 0, SectorSize, null, 0);
+            _hash.TransformBlock(buffer, 0, bytesToHash, null, 0);
             _hash.TransformFinalBlock(buffer, 0, 0);
 
             byte[] hash = _hash.Hash;
@@ -119,7 +128,7 @@ namespace LibHac
     public class IntegrityVerificationInfo
     {
         public Stream Data { get; set; }
-        public int BlockSizePower { get; set; }
+        public int BlockSize { get; set; }
         public byte[] Salt { get; set; }
         public IntegrityStreamType Type { get; set; }
     }
@@ -127,6 +136,7 @@ namespace LibHac
     public enum IntegrityStreamType
     {
         Save,
-        RomFs
+        RomFs,
+        PartitionFs
     }
 }

LibHac/Nca.cs

@@ -83,24 +83,24 @@ namespace LibHac
             NcaSection sect = Sections[index];
             if (sect == null) throw new ArgumentOutOfRangeException(nameof(index));
 
-            if (sect.SuperblockHashValidity == Validity.Invalid) return null;
+            //if (sect.SuperblockHashValidity == Validity.Invalid) return null;
 
             long offset = sect.Offset;
             long size = sect.Size;
 
             Stream rawStream = StreamSource.CreateStream(offset, size);
 
-            switch (sect.Header.CryptType)
+            switch (sect.Header.EncryptionType)
             {
-                case SectionCryptType.None:
+                case NcaEncryptionType.None:
                     return rawStream;
-                case SectionCryptType.XTS:
+                case NcaEncryptionType.XTS:
                     throw new NotImplementedException("NCA sections using XTS are not supported");
-                case SectionCryptType.CTR:
+                case NcaEncryptionType.AesCtr:
                     return new RandomAccessSectorStream(new Aes128CtrStream(rawStream, DecryptedKeys[2], offset, sect.Header.Ctr), false);
-                case SectionCryptType.BKTR:
+                case NcaEncryptionType.AesCtrEx:
                     rawStream = new RandomAccessSectorStream(
-                        new BktrCryptoStream(rawStream, DecryptedKeys[2], 0, size, offset, sect.Header.Ctr, sect.Header.Bktr),
+                        new BktrCryptoStream(rawStream, DecryptedKeys[2], 0, size, offset, sect.Header.Ctr, sect.Header.BktrInfo),
                         false);
                     if (BaseNca == null) return rawStream;
 
@@ -125,25 +125,10 @@ namespace LibHac
             switch (sect.Header.Type)
             {
                 case SectionType.Pfs0:
-                    PfsSuperblock pfs0Superblock = sect.Pfs0.Superblock;
+                    return InitIvfcForPartitionfs(sect.Header.Sha256Info, new SharedStreamSource(rawStream), enableIntegrityChecks);
-
-                    return new SubStream(rawStream, pfs0Superblock.Pfs0Offset, pfs0Superblock.Pfs0Size);
                 case SectionType.Romfs:
                 case SectionType.Bktr:
-
+                    return InitIvfcForRomfs(sect.Header.IvfcInfo, new SharedStreamSource(rawStream), enableIntegrityChecks);
-                    var romfsStreamSource = new SharedStreamSource(rawStream);
-
-                    IvfcHeader ivfc;
-                    if (sect.Header.Type == SectionType.Romfs)
-                    {
-                        ivfc = sect.Header.Romfs.IvfcHeader;
-                    }
-                    else
-                    {
-                        ivfc = sect.Header.Bktr.IvfcHeader;
-                    }
-
-                    return InitIvfcForRomfs(ivfc, romfsStreamSource, enableIntegrityChecks);
                 default:
                     throw new ArgumentOutOfRangeException();
             }
@@ -158,7 +143,7 @@ namespace LibHac
             initInfo[0] = new IntegrityVerificationInfo
             {
                 Data = new MemoryStream(ivfc.MasterHash),
-                BlockSizePower = 0
+                BlockSize = 0
             };
 
             for (int i = 1; i < ivfc.NumLevels; i++)
@@ -169,7 +154,7 @@ namespace LibHac
                 initInfo[i] = new IntegrityVerificationInfo
                 {
                     Data = data,
-                    BlockSizePower = level.BlockSize,
+                    BlockSize = 1 << level.BlockSizePower,
                     Type = IntegrityStreamType.RomFs
                 };
             }
@@ -177,6 +162,39 @@ namespace LibHac
             return new HierarchicalIntegrityVerificationStream(initInfo, enableIntegrityChecks);
         }
 
+        private static Stream InitIvfcForPartitionfs(Sha256Info sb,
+            SharedStreamSource pfsStreamSource, bool enableIntegrityChecks)
+        {
+            SharedStream hashStream = pfsStreamSource.CreateStream(sb.HashTableOffset, sb.HashTableSize);
+            SharedStream dataStream = pfsStreamSource.CreateStream(sb.DataOffset, sb.DataSize);
+
+            var initInfo = new IntegrityVerificationInfo[3];
+
+            // Set the master hash
+            initInfo[0] = new IntegrityVerificationInfo
+            {
+                Data = new MemoryStream(sb.MasterHash),
+                BlockSize = 0,
+                Type = IntegrityStreamType.PartitionFs
+            };
+
+            initInfo[1] = new IntegrityVerificationInfo
+            {
+                Data = hashStream,
+                BlockSize = (int)sb.HashTableSize,
+                Type = IntegrityStreamType.PartitionFs
+            };
+
+            initInfo[2] = new IntegrityVerificationInfo
+            {
+                Data = dataStream,
+                BlockSize = sb.BlockSize,
+                Type = IntegrityStreamType.PartitionFs
+            };
+
+            return new HierarchicalIntegrityVerificationStream(initInfo, enableIntegrityChecks);
+        }
+
         public void SetBaseNca(Nca baseNca) => BaseNca = baseNca;
 
         private void DecryptHeader(Keyset keyset, Stream stream)
@@ -216,46 +234,12 @@ namespace LibHac
             sect.Header = header;
             sect.Type = header.Type;
 
-            if (sect.Type == SectionType.Pfs0)
-            {
-                sect.Pfs0 = new Pfs0Section();
-                sect.Pfs0.Superblock = header.Pfs;
-            }
-            else if (sect.Type == SectionType.Romfs)
-            {
-                ProcessIvfcSection(sect);
-            }
-
             return sect;
         }
 
-        private void ProcessIvfcSection(NcaSection sect)
-        {
-            sect.Romfs = new RomfsSection();
-            sect.Romfs.Superblock = sect.Header.Romfs;
-            IvfcLevelHeader[] headers = sect.Romfs.Superblock.IvfcHeader.LevelHeaders;
-
-            for (int i = 0; i < Romfs.IvfcMaxLevel; i++)
-            {
-                var level = new IvfcLevel();
-                sect.Romfs.IvfcLevels[i] = level;
-                IvfcLevelHeader header = headers[i];
-                level.DataOffset = header.LogicalOffset;
-                level.DataSize = header.HashDataSize;
-                level.HashBlockSize = 1 << header.BlockSize;
-                level.HashBlockCount = Util.DivideByRoundUp(level.DataSize, level.HashBlockSize);
-                level.HashSize = level.HashBlockCount * 0x20;
-
-                if (i != 0)
-                {
-                    level.HashOffset = sect.Romfs.IvfcLevels[i - 1].DataOffset;
-                }
-            }
-        }
-
         private void CheckBktrKey(NcaSection sect)
         {
-            long offset = sect.Header.Bktr.SubsectionHeader.Offset;
+            long offset = sect.Header.BktrInfo.EncryptionHeader.Offset;
             using (var streamDec = new RandomAccessSectorStream(new Aes128CtrStream(GetStream(), DecryptedKeys[2], sect.Offset, sect.Size, sect.Offset, sect.Header.Ctr)))
             {
                 var reader = new BinaryReader(streamDec);
@@ -283,16 +267,16 @@ namespace LibHac
                 case SectionType.Invalid:
                     break;
                 case SectionType.Pfs0:
-                    PfsSuperblock pfs0 = sect.Header.Pfs;
+                    Sha256Info pfs0 = sect.Header.Sha256Info;
                     expected = pfs0.MasterHash;
                     offset = pfs0.HashTableOffset;
                     size = pfs0.HashTableSize;
                     break;
                 case SectionType.Romfs:
-                    IvfcHeader ivfc = sect.Header.Romfs.IvfcHeader;
+                    IvfcHeader ivfc = sect.Header.IvfcInfo;
                     expected = ivfc.MasterHash;
                     offset = ivfc.LevelHeaders[0].LogicalOffset;
-                    size = 1 << ivfc.LevelHeaders[0].BlockSize;
+                    size = 1 << ivfc.LevelHeaders[0].BlockSizePower;
                     break;
                 case SectionType.Bktr:
                     CheckBktrKey(sect);
@@ -308,7 +292,7 @@ namespace LibHac
             stream.Read(hashTable, 0, hashTable.Length);
 
             sect.SuperblockHashValidity = Crypto.CheckMemoryHashTable(hashTable, expected, 0, hashTable.Length);
-            if (sect.Type == SectionType.Romfs) sect.Romfs.IvfcLevels[0].HashValidity = sect.SuperblockHashValidity;
+            // todo if (sect.Type == SectionType.Romfs) sect.Romfs.IvfcLevels[0].HashValidity = sect.SuperblockHashValidity;
         }
 
         public void VerifySection(int index, IProgressReport logger = null)
@@ -323,71 +307,16 @@ namespace LibHac
                 case SectionType.Invalid:
                     break;
                 case SectionType.Pfs0:
-                    VerifyPfs0(stream, sect.Pfs0, logger);
+                    // todo VerifyPfs0(stream, sect.Pfs0, logger);
                     break;
                 case SectionType.Romfs:
-                    VerifyIvfc(stream, sect.Romfs.IvfcLevels, logger);
+                    // todo VerifyIvfc(stream, sect.Romfs.IvfcLevels, logger);
                     break;
                 case SectionType.Bktr:
                     break;
             }
         }
-
+        
-        private void VerifyPfs0(Stream section, Pfs0Section pfs0, IProgressReport logger = null)
-        {
-            PfsSuperblock sb = pfs0.Superblock;
-            var table = new byte[sb.HashTableSize];
-            section.Position = sb.HashTableOffset;
-            section.Read(table, 0, table.Length);
-
-            pfs0.Validity = VerifyHashTable(section, table, sb.Pfs0Offset, sb.Pfs0Size, sb.BlockSize, false, logger);
-        }
-
-        private void VerifyIvfc(Stream section, IvfcLevel[] levels, IProgressReport logger = null)
-        {
-            for (int i = 1; i < levels.Length; i++)
-            {
-                logger?.LogMessage($"    Verifying IVFC Level {i}...");
-                IvfcLevel level = levels[i];
-                var table = new byte[level.HashSize];
-                section.Position = level.HashOffset;
-                section.Read(table, 0, table.Length);
-                level.HashValidity = VerifyHashTable(section, table, level.DataOffset, level.DataSize, level.HashBlockSize, true, logger);
-            }
-        }
-
-        private Validity VerifyHashTable(Stream section, byte[] hashTable, long dataOffset, long dataLen, long blockSize, bool isFinalBlockFull, IProgressReport logger = null)
-        {
-            const int hashSize = 0x20;
-            var currentBlock = new byte[blockSize];
-            var expectedHash = new byte[hashSize];
-            long blockCount = Util.DivideByRoundUp(dataLen, blockSize);
-            int curBlockSize = (int)blockSize;
-            section.Position = dataOffset;
-            logger?.SetTotal(blockCount);
-
-            for (long i = 0; i < blockCount; i++)
-            {
-                var remaining = (dataLen - i * blockSize);
-                if (remaining < blockSize)
-                {
-                    Array.Clear(currentBlock, 0, currentBlock.Length);
-                    if (!isFinalBlockFull) curBlockSize = (int)remaining;
-                }
-                Array.Copy(hashTable, i * hashSize, expectedHash, 0, hashSize);
-                section.Read(currentBlock, 0, curBlockSize);
-
-                if (Crypto.CheckMemoryHashTable(currentBlock, expectedHash, 0, curBlockSize) == Validity.Invalid)
-                {
-                    return Validity.Invalid;
-                }
-
-                logger?.ReportAdd(1);
-            }
-
-            return Validity.Valid;
-        }
-
         public void Dispose()
         {
             if (!KeepOpen)
@@ -399,7 +328,6 @@ namespace LibHac
 
     public class NcaSection
     {
-        public Stream Stream { get; set; }
         public NcaFsHeader Header { get; set; }
         public SectionType Type { get; set; }
         public int SectionNum { get; set; }
@@ -407,8 +335,6 @@ namespace LibHac
         public long Size { get; set; }
         public Validity SuperblockHashValidity { get; set; }
 
-        public Pfs0Section Pfs0 { get; set; }
-        public RomfsSection Romfs { get; set; }
         public bool IsExefs { get; internal set; }
     }
 

LibHac/NcaStructs.cs

@@ -84,48 +84,66 @@ namespace LibHac
 
     public class NcaFsHeader
     {
-        public byte Field0;
+        public short Version;
-        public byte Field1;
+        public NcaFormatType FormatType;
-        public SectionPartitionType PartitionType;
+        public NcaHashType HashType;
-        public SectionFsType FsType;
+        public NcaEncryptionType EncryptionType;
-        public SectionCryptType CryptType;
         public SectionType Type;
 
-        public PfsSuperblock Pfs;
+        public IvfcHeader IvfcInfo;
-        public RomfsSuperblock Romfs;
+        public Sha256Info Sha256Info;
-        public BktrSuperblock Bktr;
+        public BktrPatchInfo BktrInfo;
+
         public byte[] Ctr;
 
         public NcaFsHeader(BinaryReader reader)
         {
             long start = reader.BaseStream.Position;
-            Field0 = reader.ReadByte();
+            Version = reader.ReadInt16();
-            Field1 = reader.ReadByte();
+            FormatType = (NcaFormatType)reader.ReadByte();
-            PartitionType = (SectionPartitionType)reader.ReadByte();
+            HashType = (NcaHashType)reader.ReadByte();
-            FsType = (SectionFsType)reader.ReadByte();
+            EncryptionType = (NcaEncryptionType)reader.ReadByte();
-            CryptType = (SectionCryptType)reader.ReadByte();
             reader.BaseStream.Position += 3;
 
-            if (PartitionType == SectionPartitionType.Pfs0 && FsType == SectionFsType.Pfs0)
+            switch (HashType)
+            {
+                case NcaHashType.Sha256:
+                    Sha256Info = new Sha256Info(reader);
+                    break;
+                case NcaHashType.Ivfc:
+                    IvfcInfo = new IvfcHeader(reader);
+                    break;
+            }
+
+            if (EncryptionType == NcaEncryptionType.AesCtrEx)
+            {
+                BktrInfo = new BktrPatchInfo();
+
+                reader.BaseStream.Position = start + 0x100;
+
+                BktrInfo.RelocationHeader = new BktrHeader(reader);
+                BktrInfo.EncryptionHeader = new BktrHeader(reader);
+            }
+
+            if (FormatType == NcaFormatType.Pfs0)
             {
                 Type = SectionType.Pfs0;
-                Pfs = new PfsSuperblock(reader);
             }
-            else if (PartitionType == SectionPartitionType.Romfs && FsType == SectionFsType.Romfs)
+            else if (FormatType == NcaFormatType.Romfs)
             {
-                if (CryptType == SectionCryptType.BKTR)
+                if (EncryptionType == NcaEncryptionType.AesCtrEx)
                 {
                     Type = SectionType.Bktr;
-                    Bktr = new BktrSuperblock(reader);
                 }
                 else
                 {
                     Type = SectionType.Romfs;
-                    Romfs = new RomfsSuperblock(reader);
                 }
             }
 
+            reader.BaseStream.Position = start + 0x140;
             Ctr = reader.ReadBytes(8).Reverse().ToArray();
+
             reader.BaseStream.Position = start + 512;
         }
     }
@@ -156,10 +174,16 @@ namespace LibHac
         }
     }
 
+    public class BktrPatchInfo
+    {
+        public BktrHeader RelocationHeader;
+        public BktrHeader EncryptionHeader;
+    }
+
     public class IvfcHeader
     {
         public string Magic;
-        public uint Id;
+        public int Version;
         public uint MasterHashSize;
         public uint NumLevels;
         public IvfcLevelHeader[] LevelHeaders = new IvfcLevelHeader[6];
@@ -169,7 +193,8 @@ namespace LibHac
         public IvfcHeader(BinaryReader reader)
         {
             Magic = reader.ReadAscii(4);
-            Id = reader.ReadUInt32();
+            Version = reader.ReadInt16();
+            reader.BaseStream.Position += 2;
             MasterHashSize = reader.ReadUInt32();
             NumLevels = reader.ReadUInt32();
 
@@ -187,24 +212,46 @@ namespace LibHac
     {
         public long LogicalOffset;
         public long HashDataSize;
-        public int BlockSize;
+        public int BlockSizePower;
         public uint Reserved;
 
         public IvfcLevelHeader(BinaryReader reader)
         {
             LogicalOffset = reader.ReadInt64();
             HashDataSize = reader.ReadInt64();
-            BlockSize = reader.ReadInt32();
+            BlockSizePower = reader.ReadInt32();
             Reserved = reader.ReadUInt32();
         }
     }
 
+    public class Sha256Info
+    {
+        public byte[] MasterHash;
+        public int BlockSize; // In bytes
+        public uint Always2;
+        public long HashTableOffset;
+        public long HashTableSize;
+        public long DataOffset;
+        public long DataSize;
+
+        public Sha256Info(BinaryReader reader)
+        {
+            MasterHash = reader.ReadBytes(0x20);
+            BlockSize = reader.ReadInt32();
+            Always2 = reader.ReadUInt32();
+            HashTableOffset = reader.ReadInt64();
+            HashTableSize = reader.ReadInt64();
+            DataOffset = reader.ReadInt64();
+            DataSize = reader.ReadInt64();
+        }
+    }
+
     public class BktrHeader
     {
         public long Offset;
         public long Size;
         public uint Magic;
-        public uint Field14;
+        public uint Version;
         public uint NumEntries;
         public uint Field1C;
 
@@ -213,7 +260,7 @@ namespace LibHac
             Offset = reader.ReadInt64();
             Size = reader.ReadInt64();
             Magic = reader.ReadUInt32();
-            Field14 = reader.ReadUInt32();
+            Version = reader.ReadUInt32();
             NumEntries = reader.ReadUInt32();
             Field1C = reader.ReadUInt32();
         }
@@ -281,21 +328,24 @@ namespace LibHac
         Gamecard
     }
 
-    public enum SectionCryptType
+    public enum NcaEncryptionType
     {
-        None = 1,
+        Auto,
+        None,
         XTS,
-        CTR,
+        AesCtr,
-        BKTR
+        AesCtrEx
     }
 
-    public enum SectionFsType
+    public enum NcaHashType
     {
-        Pfs0 = 2,
+        Auto,
-        Romfs
+        None,
+        Sha256,
+        Ivfc
     }
 
-    public enum SectionPartitionType
+    public enum NcaFormatType
     {
         Romfs,
         Pfs0

LibHac/Pfs.cs

@@ -71,7 +71,7 @@ namespace LibHac
     public class PfsSuperblock
     {
         public byte[] MasterHash; /* SHA-256 hash of the hash table. */
-        public uint BlockSize; /* In bytes. */
+        public int BlockSize; /* In bytes. */
         public uint Always2;
         public long HashTableOffset; /* Normally zero. */
         public long HashTableSize;
@@ -81,7 +81,7 @@ namespace LibHac
         public PfsSuperblock(BinaryReader reader)
         {
             MasterHash = reader.ReadBytes(0x20);
-            BlockSize = reader.ReadUInt32();
+            BlockSize = reader.ReadInt32();
             Always2 = reader.ReadUInt32();
             HashTableOffset = reader.ReadInt64();
             HashTableSize = reader.ReadInt64();

LibHac/Savefile/Savefile.cs

@@ -130,7 +130,7 @@ namespace LibHac.Savefile
             initInfo[0] = new IntegrityVerificationInfo
             {
                 Data = new MemoryStream(Header.MasterHashA),
-                BlockSizePower = 0,
+                BlockSize = 0,
                 Type = IntegrityStreamType.Save
             };
 
@@ -145,7 +145,7 @@ namespace LibHac.Savefile
                 initInfo[i] = new IntegrityVerificationInfo
                 {
                     Data = data,
-                    BlockSizePower = level.BlockSize,
+                    BlockSize = 1 << level.BlockSizePower,
                     Salt = new HMACSHA256(Encoding.ASCII.GetBytes(SaltSources[i - 1])).ComputeHash(ivfc.SaltSource),
                     Type = IntegrityStreamType.Save
                 };

hactoolnet/ProcessNca.cs

@@ -178,34 +178,43 @@ namespace hactoolnet
 
             void PrintPfs0(NcaSection sect)
             {
-                PfsSuperblock sBlock = sect.Pfs0.Superblock;
+                Sha256Info hashInfo = sect.Header.Sha256Info;
-                PrintItem(sb, colLen, $"        Superblock Hash{sect.SuperblockHashValidity.GetValidityString()}:", sBlock.MasterHash);
-                sb.AppendLine($"        Hash Table{sect.Pfs0.Validity.GetValidityString()}:");
 
-                PrintItem(sb, colLen, "            Offset:", $"0x{sBlock.HashTableOffset:x12}");
+                PrintItem(sb, colLen, $"        Superblock Hash{sect.SuperblockHashValidity.GetValidityString()}:", hashInfo.MasterHash);
-                PrintItem(sb, colLen, "            Size:", $"0x{sBlock.HashTableSize:x12}");
+                // todo sb.AppendLine($"        Hash Table{sect.Pfs0.Validity.GetValidityString()}:");
-                PrintItem(sb, colLen, "            Block Size:", $"0x{sBlock.BlockSize:x}");
+                sb.AppendLine($"        Hash Table:");
-                PrintItem(sb, colLen, "        PFS0 Offset:", $"0x{sBlock.Pfs0Offset:x12}");
+
-                PrintItem(sb, colLen, "        PFS0 Size:", $"0x{sBlock.Pfs0Size:x12}");
+                PrintItem(sb, colLen, "            Offset:", $"0x{hashInfo.HashTableOffset:x12}");
+                PrintItem(sb, colLen, "            Size:", $"0x{hashInfo.HashTableSize:x12}");
+                PrintItem(sb, colLen, "            Block Size:", $"0x{hashInfo.BlockSize:x}");
+                PrintItem(sb, colLen, "        PFS0 Offset:", $"0x{hashInfo.DataOffset:x12}");
+                PrintItem(sb, colLen, "        PFS0 Size:", $"0x{hashInfo.DataSize:x12}");
             }
 
             void PrintRomfs(NcaSection sect)
             {
-                RomfsSuperblock sBlock = sect.Romfs.Superblock;
+                IvfcHeader ivfcInfo = sect.Header.IvfcInfo;
-                IvfcLevel[] levels = sect.Romfs.IvfcLevels;
 
-                PrintItem(sb, colLen, $"        Superblock Hash{sect.SuperblockHashValidity.GetValidityString()}:", sBlock.IvfcHeader.MasterHash);
+                PrintItem(sb, colLen, $"        Superblock Hash{sect.SuperblockHashValidity.GetValidityString()}:", ivfcInfo.MasterHash);
-                PrintItem(sb, colLen, "        Magic:", sBlock.IvfcHeader.Magic);
+                PrintItem(sb, colLen, "        Magic:", ivfcInfo.Magic);
-                PrintItem(sb, colLen, "        ID:", $"{sBlock.IvfcHeader.Id:x8}");
+                PrintItem(sb, colLen, "        Version:", $"{ivfcInfo.Version:x8}");
 
                 for (int i = 0; i < Romfs.IvfcMaxLevel; i++)
                 {
-                    IvfcLevel level = levels[i];
+                    IvfcLevelHeader level = ivfcInfo.LevelHeaders[i];
-                    sb.AppendLine($"        Level {i}{level.HashValidity.GetValidityString()}:");
+                    long hashOffset = 0;
-                    PrintItem(sb, colLen, "            Data Offset:", $"0x{level.DataOffset:x12}");
+
-                    PrintItem(sb, colLen, "            Data Size:", $"0x{level.DataSize:x12}");
+                    if (i != 0)
-                    PrintItem(sb, colLen, "            Hash Offset:", $"0x{level.HashOffset:x12}");
+                    {
-                    PrintItem(sb, colLen, "            Hash BlockSize:", $"0x{level.HashBlockSize:x8}");
+                        hashOffset = ivfcInfo.LevelHeaders[i - 1].LogicalOffset;
+                    }
+
+                    // todo  sb.AppendLine($"        Level {i}{level.HashValidity.GetValidityString()}:");
+                    sb.AppendLine($"        Level {i}:");
+                    PrintItem(sb, colLen, "            Data Offset:", $"0x{level.LogicalOffset:x12}");
+                    PrintItem(sb, colLen, "            Data Size:", $"0x{level.HashDataSize:x12}");
+                    PrintItem(sb, colLen, "            Hash Offset:", $"0x{hashOffset:x12}");
+                    PrintItem(sb, colLen, "            Hash BlockSize:", $"0x{1 << level.BlockSizePower:x8}");
                 }
             }
         }

hactoolnet/ProcessSwitchFs.cs

@@ -170,7 +170,7 @@ namespace hactoolnet
 
                     foreach (NcaSection sect in nca.Sections.Where(x => x != null))
                     {
-                        Console.WriteLine($"        {sect.SectionNum} {sect.Type} {sect.Header.CryptType} {sect.SuperblockHashValidity}");
+                        Console.WriteLine($"        {sect.SectionNum} {sect.Type} {sect.Header.EncryptionType} {sect.SuperblockHashValidity}");
                     }
                 }