public override Hash256 Hash()
{
var half = new Hash256.HalfSha512();
HashPrefix prefix;
switch (this.Type)
{
case NodeType.tnTRANSACTION_MD:
prefix = HashPrefix.TxNode;
break;
case NodeType.tnACCOUNT_STATE:
prefix = HashPrefix.LeafNode;
break;
default:
throw new InvalidOperationException("No support for " + this.Type);
}
half.Update(prefix.Bytes);
half.Update(this.Blob.Bytes);
half.Update(this.index);
return(half.Finish());
}
public Hash256 SigningHash()
{
Hash256.HalfSha512 signing = Hash256.Prefixed256(HashPrefix.TxSign);
ToBytesSink(signing, new IsSigningFieldFilter());
return(signing.Finish());
}
public override Hash256 Hash()
{
var half = new Hash256.HalfSha512();
half.Update(HashPrefix.LeafNode);
this.sle.ToBytesSink(half);
half.Update(this.Index);
return(half.Finish());
}
/// <summary>
/// All data stored is keyed by the hash of it's contents.
/// Ripple uses the first 256 bits of a sha512 as it's 33 percent
/// faster than using sha256.
/// </summary>
/// <param name="content"></param>
/// <returns>
/// `key` used to store the content.
/// </returns>
private Hash256 StoreContent(byte[] content)
{
var hasher = new Hash256.HalfSha512();
hasher.Update(content);
Hash256 key = hasher.Finish();
this.StoreHashKeyedContent(key, content);
return(key);
}
public void Prepare(IKeyPair keyPair, Amount fee, UInt32 sequence, UInt32 lastLedgerSequence)
{
// This won't always be specified
if (lastLedgerSequence != null)
{
Txn.Add(UInt32.LastLedgerSequence, lastLedgerSequence);
}
Txn.Add(UInt32.Sequence, sequence);
Txn.Add(Amount.Fee, fee);
Txn.Add(VariableLength.SigningPubKey, keyPair.PubBytes());
if (Transaction.CanonicalFlagDeployed)
{
Txn.SetCanonicalSignatureFlag();
}
SigningHash = Txn.SigningHash();
if (PreviousSigningHash != null && SigningHash.Equals(PreviousSigningHash))
{
return;
}
try
{
byte[] signature = keyPair.Sign(SigningHash.Bytes);
Txn.Add(VariableLength.TxnSignature, signature);
var blob = new BytesList();
Hash256.HalfSha512 id = Hash256.Prefixed256(HashPrefix.TransactionId);
Txn.ToBytesSink(new MultiSink(blob, id));
TxBlob = blob.BytesHex();
Hash = id.Finish();
}
catch (Exception e)
{
// electric paranoia
PreviousSigningHash = null;
throw new ApplicationException("Something went wrong.", e);
}
PreviousSigningHash = SigningHash;
}
public override Hash256 Hash()
{
if (!this.NeedsHashing)
{
return(this.hash);
}
if (this.Empty)
{
return(ZERO_256);
}
var hasher = new Hash256.HalfSha512();
hasher.Update(this.HashingPrefix);
int fullBranches = 0;
foreach (var node in this.branches)
{
if (node != null)
{
var hsh = node.Hash();
hasher.Update(hsh);
fullBranches++;
}
else
{
hasher.Update(ZERO_256);
}
}
this.hash = hasher.Finish();
this.OnHash(this.hash, fullBranches);
return(this.hash);
}
