public static Tuple<List<uint>, List<byte[]>, List<long>> DigestOldFile(string path)
{
using (var file = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.None))
using (var stream = new BlockByBlockStreamReader(file, BlockSize))
{
var ret = new Tuple<List<uint>, List<byte[]>, List<long>>(new List<uint>(), new List<byte[]>(), new List<long>());
var md5 = MD5.Create();
byte[] block;
for (long offset = 0; (block = stream.NextBlock()) != null; offset += block.Length)
{
var checksum = RollingChecksum(block);
var hash = md5.ComputeHash(block);
ret.Item1.Add(checksum);
ret.Item2.Add(hash);
ret.Item3.Add(offset);
}
return ret.Sort();
}
}