public void testExportKeys()
{
var algorithm = SignatureAlgorithm.Ed25519;
BlockchainAccount account = AccountApi.createAccount(true);
account.PublicKey.ShouldNotBe(null);
account.Key.ShouldNotBe(null);
var data = Encoding.UTF8.GetBytes("Hello world!");
// sign the data with the private key
var signature = algorithm.Sign(account.Key, data);
var key = account.Export();
key.ShouldNotBe(null);
var privateStr = Utils.ByteArrayToString(key);
var pub = account.ExportPublic();
pub.ShouldNotBe(null);
var publicStr = Utils.ByteArrayToString(pub);
using (var newKey = Key.Import(algorithm, Utils.StringToByteArray(privateStr), KeyBlobFormat.PkixPrivateKey))
{
var publicKey = PublicKey.Import(algorithm, Utils.StringToByteArray(publicStr), KeyBlobFormat.PkixPublicKey);
// sign the data with the private key
var signature2 = algorithm.Sign(newKey, data);
signature2.ShouldBe(signature);
// verify the data with the signature and the public key
var done = algorithm.Verify(publicKey, data, signature2);
done.ShouldBe(true);
}
// now user
}
public async Task testBurnTransaction()
{
var publicKeyObj = BlockchainAccount.publicKeyFromHex(publicKey);
var privateKeyObj = BlockchainAccount.privateKeyFromHex(privateKey);
Vehicle car = new Vehicle();
car.id = "92832938203903-" + DateTime.Now.Ticks.ToString();
car.consumption = "20.9";
// Set up, sign, and send your transaction
var transaction = BigchainDbTransactionBuilder <Vehicle, object>
.init()
.addAssets(car)
.operation(Operations.CREATE)
.buildAndSignOnly(publicKeyObj, privateKeyObj);
//.buildAndSign(account.PublicKey, account.PrivateKey);
//var info = transaction.toHashInput();
var createTransaction = await TransactionsApi <Vehicle, object> .sendTransactionAsync(transaction);
createTransaction.Data.ShouldNotBe(null);
// the asset's ID is equal to the ID of the transaction that created it
if (createTransaction != null)
{
string testId2 = createTransaction.Data.Id;
var testTran2 = await TransactionsApi <object, object> .getTransactionByIdAsync(testId2);
testTran2.ShouldNotBe(null);
}
// Describe the output you are fulfilling on the previous transaction
FulFill spendFrom = new FulFill();
// the asset's ID is equal to the ID of the transaction that created it
spendFrom.TransactionId = createTransaction.Data.Id;
spendFrom.OutputIndex = 0;
// By default, the 'amount' of a created digital asset == "1". So we spend "1" in our TRANSFER.
string amount = "1";
var burnKey = new BlockchainAccount();
var burnKeyStr = Utils.ByteArrayToString(burnKey.ExportPublic());
var s = new Status();
s.Value = "BURNED";
Details details = null;
// Use the previous transaction's asset and TRANSFER it
var build2 = BigchainDbTransactionBuilder <Vehicle, Status> .
init().
addInput(details, spendFrom, publicKeyObj).
addOutput(amount, burnKey.PublicKey).
addAssets(createTransaction.Data.Id).
addMetaData(s).
operation(Operations.TRANSFER).
buildAndSignOnly(publicKeyObj, privateKeyObj);
var transferTransaction = await TransactionsApi <Vehicle, Status> .sendTransactionAsync(build2);
transferTransaction.Data.ShouldNotBe(null);
if (transferTransaction != null)
{
string tran2 = transferTransaction.Data.Id;
var testTran2 = await TransactionsApi <object, object> .getTransactionByIdAsync(tran2);
testTran2.ShouldNotBe(null);
string tran3 = transferTransaction.Data.Asset.Id;
var testTran3 = await TransactionsApi <object, object> .getTransactionByIdAsync(tran3);
testTran3.ShouldNotBe(null);
}
}
