public TxTemplate SignTransaction(TxTemplate transaction, List <string> privateKeys)
{
var signedTx = (TxTemplate)transaction.Clone();
var serializedTransaction = JsonUtility.SerializeTransactionIntoCanonicalString(JsonConvert.SerializeObject(transaction));
var index = 0;
foreach (var privKey in privateKeys)
{
SignatureMetadata signatures = GetSignature(transaction, serializedTransaction, index, privKey);
bool verifyFullfill = signatures.Signature.VerifySignature(signatures.TransactionHash, signatures.PubKeyBuffer);
if (!verifyFullfill)
{
continue;
}
signedTx.Inputs[index].Fulfillment = GenerateFulfillmentUri(signatures.PubKeyBuffer, signatures.Signature);
index++;
}
var serializedSignedTransaction = JsonUtility.SerializeTransactionIntoCanonicalString(JsonConvert.SerializeObject(signedTx));
signedTx.Id = HashingUtils.ComputeSha3Hash(Encoding.UTF8.GetBytes(serializedSignedTransaction)).ToHex(false);
return(signedTx);
}
protected override void ReadSpecific(BinaryReader reader)
{
var count = reader.ReadVarUint32();
for (var i = 0; i < count; i++)
{
Signatures.Add(SignatureMetadata.Read(reader));
}
}
public void ProvidedTx_ShouldReturnValidSignedTxHash()
{
var expectedSerializedTransactionHash = "7c93d8e95c6e2d1b6ba6d77020a9e7d09d30c498fcb0485801fc7507fda43fca";
var keyPair = new GeneratedKeyPair()
{
ExpandedPrivateKey = "2SmR42zKeTExHeXa5gFCJzfVLzPb843bkv9L9EGNxfABo9roeGWuNvTg5KFCcNoA6xd4VnWnX1yzALSvszBFncGu",
PrivateKey = "5ryt9DgJWu2G5Ptzd5CwUXsvw5DKygd4serdMoJ67KCm",
PublicKey = "6up1UDJC2EnReHcdYVZkJdR8hbSym48P5XWiyD1oW2Qm"
};
var tx = GetMockResponseTx(keyPair.PublicKey);
var serializedTransaction = JsonUtility.SerializeTransactionIntoCanonicalString(JsonConvert.SerializeObject(tx));
var signTx = new Bigchain_SignTransaction();
SignatureMetadata signatures = signTx.GetSignature(tx, serializedTransaction, 0, keyPair.ExpandedPrivateKey);
Assert.AreEqual(expectedSerializedTransactionHash, signatures.TransactionHash.ToHex());
}