public void DeriveFrom()
{
byte[] foo = { 0x66, 0x6f, 0x6f }, bar = { 0x62, 0x61, 0x72 };
Assert.Equal(
HashDigest <SHA1> .FromString("0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"),
HashDigest <SHA1> .DeriveFrom(foo)
);
Assert.Equal(
HashDigest <SHA1> .DeriveFrom(foo),
HashDigest <SHA1> .DeriveFrom(ImmutableArray.Create(foo))
);
Assert.Equal(
HashDigest <SHA1> .DeriveFrom(foo),
HashDigest <SHA1> .DeriveFrom(foo.AsSpan())
);
Assert.Equal(
HashDigest <SHA1> .FromString("62cdb7020ff920e5aa642c3d4066950dd1f01f4d"),
HashDigest <SHA1> .DeriveFrom(bar)
);
Assert.Equal(
HashDigest <MD5> .FromString("acbd18db4cc2f85cedef654fccc4a4d8"),
HashDigest <MD5> .DeriveFrom(foo)
);
Assert.Equal(
HashDigest <MD5> .FromString("37b51d194a7513e45b56f6524f2d51f2"),
HashDigest <MD5> .DeriveFrom(bar)
);
}
static MerkleTrie()
{
_codec = new Codec();
var bxNull = _codec.Encode(Null.Value);
EmptyRootHash = HashDigest <SHA256> .DeriveFrom(bxNull);
}
private static HashDigest <SHA256>?CalcualteTxHashes(IEnumerable <Transaction <T> > txs)
{
if (!txs.Any())
{
return(null);
}
byte[][] serializedTxs = txs.Select(tx => tx.Serialize(true)).ToArray();
int txHashSourceLength = serializedTxs.Select(b => b.Length).Sum() + 2;
var txHashSource = new byte[txHashSourceLength];
// Bencodex lists look like: l...e
txHashSource[0] = 0x6c;
txHashSource[txHashSourceLength - 1] = 0x65;
int offset = 1;
foreach (byte[] serializedTx in serializedTxs)
{
serializedTx.CopyTo(txHashSource, offset);
offset += serializedTx.Length;
}
using SHA256 hashAlgo = SHA256.Create();
return(HashDigest <SHA256> .DeriveFrom(txHashSource));
}
public static HashDigest <SHA256>?ActionEvaluationsToHash(
IEnumerable <ActionEvaluation> actionEvaluations)
{
ActionEvaluation actionEvaluation;
var evaluations = actionEvaluations.ToList();
if (evaluations.Any())
{
actionEvaluation = evaluations.Last();
}
else
{
return((HashDigest <SHA256>?)null);
}
IImmutableSet <Address> updatedAddresses =
actionEvaluation.OutputStates.UpdatedAddresses;
var dict = Bencodex.Types.Dictionary.Empty;
foreach (Address address in updatedAddresses)
{
dict.Add(address.ToHex(), actionEvaluation.OutputStates.GetState(address));
}
return(HashDigest <SHA256> .DeriveFrom(new Codec().Encode(dict)));
}
public void ToBencodex()
{
var buf = new byte[128];
var random = new Random();
random.NextBytes(buf);
var hashDigest = HashDigest <SHA256> .DeriveFrom(buf);
var valueNode = new HashNode(hashDigest);
Assert.Equal((Binary)hashDigest.ToByteArray(), valueNode.ToBencodex());
}
public async Task ConstructDeterministic(int waitMilliseconds)
{
Address avatarAddress = new PrivateKey().ToAddress();
Address agentAddress = new PrivateKey().ToAddress();
AvatarState avatarStateA = GetNewAvatarState(avatarAddress, agentAddress);
await Task.Delay(waitMilliseconds);
AvatarState avatarStateB = GetNewAvatarState(avatarAddress, agentAddress);
HashDigest <SHA256> Hash(AvatarState avatarState) =>
HashDigest <SHA256> .DeriveFrom(new Codec().Encode(avatarState.Serialize()));
Assert.Equal(Hash(avatarStateA), Hash(avatarStateB));
}
public void DecodeValidFullNode()
{
var hashA = HashDigest <SHA256> .DeriveFrom(TestUtils.GetRandomBytes(128));
var hashB = HashDigest <SHA256> .DeriveFrom(TestUtils.GetRandomBytes(128));
var list = new List(new IValue[]
{
(Binary)hashA.ToByteArray(),
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
Null.Value,
(Binary)hashB.ToByteArray(),
});
Assert.Equal(17, list.Count);
INode node = NodeDecoder.Decode(list);
Assert.IsType <FullNode>(node);
var fullNode = (FullNode)node;
Assert.Equal(new HashNode(hashB), fullNode.Value);
Assert.Equal(new HashNode(hashA), fullNode.Children[0]);
for (int i = 1; i < 16; ++i)
{
Assert.Null(fullNode.Children[i]);
}
}
internal static HashDigest <SHA256> Hash(this INode node)
{
return(node is HashNode hashNode
? hashNode.HashDigest
: HashDigest <SHA256> .DeriveFrom(node.Serialize()));
}
public override void Set(IReadOnlyList <string> fields)
{
base.Set(fields);
ItemId = HashDigest <SHA256> .DeriveFrom(Serialize().EncodeIntoChunks().SelectMany(b => b).ToArray());
}
public Row(Bencodex.Types.Dictionary serialized) : base(serialized)
{
ItemId = HashDigest <SHA256> .DeriveFrom(serialized.EncodeIntoChunks().SelectMany(b => b).ToArray());
}
public override void Set(IReadOnlyList <string> fields)
{
base.Set(fields);
ItemId = HashDigest <SHA256> .DeriveFrom(_codec.Encode(Serialize()));
}
public Row(Bencodex.Types.Dictionary serialized) : base(serialized)
{
ItemId = HashDigest <SHA256> .DeriveFrom(_codec.Encode(serialized));
}
internal static HashDigest <SHA256> Hash(this INode node)
{
return(node is HashNode hashNode
? hashNode.HashDigest
: HashDigest <SHA256> .DeriveFrom(Codec.Encode(node.ToBencodex())));
}
