IssueHOTPBlob2.java

Example of generating, verifying and re-synchronizing a HOTP blob OATH using the HSM. With seed generated outside the HSM.

See Note on examples.

package doxy.examples;
 
import com.dinamonetworks.Dinamo;
import br.com.trueaccess.TacException;
import br.com.trueaccess.TacNDJavaLib;
 
public class IssueHOTPBlob2 {
    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("--> Login HSM");
        api.openSession(strAddr, strUsrId, strPwd);
 
        System.out.println("--> Create a master key");
        api.createKey(masterKeyName, TacNDJavaLib.ALG_AES_256, TacNDJavaLib.NONEXPORTABLE_KEY);
 
        // The seed is a binary that can be generated by hsm or by soft/hard token.
        byte[] hotpSeed = { (byte)0xD5, (byte)0x17, (byte)0xED, (byte)0x40, (byte)0x1D,
                            (byte)0xF3, (byte)0x03, (byte)0x38, (byte)0x37, (byte)0xE0,
                            (byte)0x8B, (byte)0x62, (byte)0x55, (byte)0xBE, (byte)0xDB,
                            (byte)0xF9, (byte)0x52, (byte)0x0E, (byte)0xF8, (byte)0x8E };
 
        System.out.println("--> Generate BLOB for the seed");
        byte[] hotpImpBlob = api.importOATHHotpBlob(    masterKeyName,
                                                        hotpSeed); // You must store binary value of blob
 
        //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 syncronized (event token)");
        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 sucessfully");
    }
}