public WiiPartitionGroupEncryptionState(int maxSize, byte[] key, byte[] h3Table)
{
if (maxSize % 0x8000 != 0)
{
throw new HandledException("Max group size is not a multiple of 0x8000");
}
_h3Table = h3Table;
_maxSize = maxSize;
_blocks = new block[maxSize / 0x8000];
PartitionHashTable h1 = null;
PartitionHashTable h2 = new PartitionHashTable(8);
for (int i = 0; i < _blocks.Length; i++)
{
if (i % 8 == 0) //share the h2 hash table across 8 blocks
{
h1 = new PartitionHashTable(8); //8 lots of 8 blocks = 64 blocks
}
_blocks[i] = new block(i, h1, h2, key);
}
_unusedBlankHash = _blocks[0].Sha1.ComputeHash(new byte[0x400]);
}
public block(int index, PartitionHashTable h1Table, PartitionHashTable h2Table, byte[] key)
{
this.Index = index;
this.Offset = index * 0x8000;
this.DataOffset = index * 0x8000 + 0x400;
this.Aes = Aes.Create();
this.Sha1 = SHA1.Create();
this.Aes.Padding = PaddingMode.None;
this.Aes.Key = key;
this.H0Table = new PartitionHashTable(31); //31 data sectors of 0x400 in a block
this.H1Table = h1Table;
this.H2Table = h2Table;
}
public block(int index, PartitionHashTable h1Table, PartitionHashTable h2Table, byte[] key)
{
Index = index;
Offset = index * 0x8000;
DataOffset = index * 0x8000 + 0x400;
Aes = Aes.Create();
Sha1 = SHA1.Create();
Aes.Padding = PaddingMode.None;
Aes.Key = key;
H0Table = new PartitionHashTable(31); //31 data sectors of 0x400 in a block
H1Table = h1Table;
H2Table = h2Table;
}