IssueHOTPBlob.java

Example of generating, checking and re-synchronizing a HOTP blob OATH using HSM. With seed generated within HSM.

See Note on examples.

package doxy.examples;
 
import com.dinamonetworks.Dinamo;
import br.com.trueaccess.TacException;
import br.com.trueaccess.TacNDJavaLib;
 
public class IssueHOTPBlob {
    private static String strAddr = "127.0.0.1";
    private static String strUsrId = "master";
    private static String strPwd = "12345678" ;
    private static String masterKeyName = "master_key";
 
    public static void main(String[] args) throws TacException {
 
        Dinamo api = new Dinamo();
 
        System.out.println("--> HSM Login");
        api.openSession(strAddr, strUsrId, strPwd);
 
        System.out.println("--> Create a master key");
        api.createKey(masterKeyName, TacNDJavaLib.ALG_AES_256, TacNDJavaLib.NONEXPORTABLE_KEY);
 
 
        System.out.println("--> Generate BLOB for the seed");
        byte[] hotpImpBlob = api.generateOATHHotpBlob(masterKeyName);
 
        //This call simulates the client application
        String nextOtp = api.getNextOATHOTP(masterKeyName,
                                            TacNDJavaLib.ISSUE_OATH_MIN_OTP_LEN,
                                            hotpImpBlob);
 
        System.out.println("--> check OTP value for know seed and sequence");
        hotpImpBlob = api.checkOATHBlobOTP( masterKeyName,
                                            nextOtp,
                                            hotpImpBlob);
 
        System.out.println("--> Two consecutive OTPs are passed for HSM to adjust the event window in the case of need to sync (event token)");
        //These 2 OTPs must be generated by the client application
        hotpImpBlob = api.resyncOATHBlobOTP( masterKeyName,
                                                "758993",
                                                "864532",
                                                hotpImpBlob);
 
 
        System.out.println("--> Delete the master key");
        api.deleteKey(masterKeyName);
 
        api.closeSession();
 
        System.out.println("The process ended successfully");
    }
}