BchainGetKeyInfo.java

Example of restoring the properties of an XPrv BIP32 key using the blockchain module.

See Note on examples.

package doxy.examples;
 
import com.dinamonetworks.BchainKeyInfo;
import com.dinamonetworks.Dinamo;
 
import br.com.trueaccess.TacException;
import br.com.trueaccess.TacNDJavaLib;
 
public class BchainGetKeyInfo {
 
    public static void main(String[] args) throws TacException {
        String ip = "127.0.0.1";
        String user = "master";
        String password = "12345678";
 
        Dinamo api = new Dinamo();
 
        api.openSession(ip, user, password);
 
        String xprvId = "xprv_keyinfo_example";
 
        // Cria uma chave XPrv BIP32 (mainnet)
        api.bchainCreateXPrv(TacNDJavaLib.DN_BCHAIN_BIP32_XPRV,
                             TacNDJavaLib.DN_BCHAIN_VER_BIP32_MAINNET,
                             0,
                             xprvId);
        System.out.println("Chave XPrv criada: " + xprvId);
 
        // Recupera as informações da chave
        BchainKeyInfo info = api.bchainGetKeyInfo(xprvId);
 
        System.out.println("Tipo de armazenamento: " + info.getStorageType()
                + (info.getStorageType() == TacNDJavaLib.DN_BCHAIN_KEY_INFO_ST_BLKC
                        ? " (blockchain)" : " (comum)"));
        System.out.println("Tipo da chave: " + info.getType());
        System.out.println("Profundidade BIP32: " + info.getBip32Depth());
 
        byte[] bip32Ver = info.getBip32Ver();
        System.out.printf("Versão BIP32: %02X %02X %02X %02X%n",
                bip32Ver[0], bip32Ver[1], bip32Ver[2], bip32Ver[3]);
 
        byte[] parentFp = info.getParentFingerprint();
        System.out.printf("Fingerprint do pai: %02X %02X %02X %02X%n",
                parentFp[0], parentFp[1], parentFp[2], parentFp[3]);
 
        byte[] childNum = info.getChildNumber();
        System.out.printf("Número do filho: %02X %02X %02X %02X%n",
                childNum[0], childNum[1], childNum[2], childNum[3]);
 
        // Remove a chave criada
        api.deleteKeyIfExists(xprvId);
        System.out.println("Chave XPrv removida: " + xprvId);
 
        api.closeSession();
    }
}