Swift / Blockchain Library for NEM.io Platform

Java library to convert and send Swift Messages to NEM Blockchain and vice versa

Usage

Set up your Node first via app.properties.

The library uses the Builder Pattern to create and send transactions.

Set up your node connection

Create a app.properties file on your classpath and add the following:

node.endpoint.networkname=testnet
node.endpoint.protocol=http
node.endpoint.uri=<testnet node>
node.endpoint.port=7890

Encode and Gzip Swift File/Text

//	swift message
final String sampleSwiftMsg = "{1:F21FOOLHKH0AXXX0304009999}{4:{177:1608140809}{451:0}}{1:F01FOOLHKH0AXXX0304009999}{2:O9401609160814FOOLHKH0AXXX03040027341608141609N}{4:\n"
		+ ":20:USD940NO1\n" + ":21:123456/DEV\n" + ":25:USD234567\n" + ":28C:1/1\n" + ":60F:C160418USD672,\n"
		+ ":61:160827C642,S1032\n" + ":86:ANDY\n" + ":61:160827D42,S1032\n" + ":86:BANK CHARGES\n"
		+ ":62F:C160418USD1872,\n" + ":64:C160418USD1872,\n" + "-}{5:{CHK:0FEC1E4AEC53}{TNG:}}{S:{COP:S}}";

//	set the account 
final Account senderAccount = EntityFactory.buildAccountFromPrivateKey("<privatekey>");
final Account recipientAccount = EntityFactory.buildAccountFromPublicKey("<publickey>");

//	prepare the payload message.
SecureMessage message = SecureMessageSwiftPayloadEncoder.encodeAndGzipCompress(senderAccount, recipientAccount, sampleSwiftMsg);

// use the builder to build and send the transaction.
SwiftTransactionBuilder
	.sender(this.senderPrivateAccount)
	.recipient(this.recipientPublicAccount)
	.amount(0l)
	.attachment(AttachmentFactory.createTransferTransactionAttachment(message))
	.buildAndSendTransaction();
	

Decode Swift File/Text

//	 encrypted swift message
final String encryptedMessage = "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";

//	set the account 
final Account senderAccount = EntityFactory.buildAccountFromPrivateKey("<privatekey>");
final Account recipientAccount = EntityFactory.buildAccountFromPublicKey("<publickey>");

//	Get the decoded message.
String decodedPayload = SecureMessageSwiftPayloadDecoder.decodeAndGzipUncompress(senderKeyPair, recipientKeyPairPriv,encryptedMessage);
	

Monitoring Incoming/Outgoing Transactions

Documentation to follow.

Testing

Run the JUnit Test cases using Maven or use it as a reference.

mvn test

To test the funtionality with real data, set the sender, recipient and multisig via the super class TransactionUnitTest class.

@Before // for encoding.
public void init() {
    this.setAccountMultisigAccountPublicKey(...);
    this.setAccountSenderPrivateKey(...);
    this.setAccountRecipientPublicKey(...);
}

@Before // for decoding.
public void init() {
    this.setAccountMultisigAccountPublicKey(...);
    this.setAccountSenderPublicKey(...);
    this.setAccountRecipientPrivateKey(...);
}

Build

Like any other maven project, just do the maven command below.

mvn clean install

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