/// <summary>
/// Hashes a list of byte arrays, prefixing each one with its length.
/// </summary>
public byte[] Sum(byte[] domain, params byte[][] datas)
{
using (var stream = new MemoryStream())
{
byte[] ulongBytes;
foreach (var data in datas)
{
ulongBytes = this.UInt64ToBytes((ulong)data.Length);
stream.Write(ulongBytes, 0, ulongBytes.Length);
stream.Write(data, 0, data.Length);
}
ulongBytes = this.UInt64ToBytes((ulong)domain.Length);
stream.Write(ulongBytes, 0, ulongBytes.Length);
stream.Write(domain, 0, domain.Length);
var result = stream.ToArray();
byte[] hash;
var sha = new Sha512tDigest(256);
try
{
sha.BlockUpdate(result, 0, result.Length);
hash = new byte[sha.GetDigestSize()];
sha.DoFinal(hash, 0);
}
finally
{
sha.Finish();
}
return(hash);
}
}
public override void Initialize()
{
HashValue = new byte[_digest.GetDigestSize()];
}