Example usage for java.security MessageDigest digest

Introduction

In this page you can find the example usage for java.security MessageDigest digest.

Prototype

public byte[] digest() 

Source Link

Document

Completes the hash computation by performing final operations such as padding.

Usage

From source file:core.Hash.java

/**
 * @param args the command line arguments
 *//*  w  w  w.  ja va 2 s  . c o  m*/
public static void main(String[] args) {

    MessageDigest md = null;
    String password = "password D:";
    try {

        //SHA-512
        md = MessageDigest.getInstance("SHA-512");
        md.update(password.getBytes());
        byte[] mb = md.digest();
        System.out.println(Hex.encodeHex(mb));
        //SHA-1
        md = MessageDigest.getInstance("SHA-1");
        md.update(password.getBytes());
        mb = md.digest();
        System.out.println(Hex.encodeHex(mb));
        //MD5
        md = MessageDigest.getInstance("MD5");
        md.update(password.getBytes());
        mb = md.digest();
        System.out.println(Hex.encodeHex(mb));

    } catch (NoSuchAlgorithmException e) {
        //Error
    }
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    if (args.length != 1) {
        System.out.println("Usage: Masher filename");
        return;/* w ww.j  av a  2 s .  c  om*/
    }
    MessageDigest md = MessageDigest.getInstance("MD5");
    FileInputStream in = new FileInputStream(args[0]);
    byte[] buffer = new byte[8192];
    int length;
    while ((length = in.read(buffer)) != -1)
        md.update(buffer, 0, length);
    byte[] raw = md.digest();
    BASE64Encoder encoder = new BASE64Encoder();
    String base64 = encoder.encode(raw);
    System.out.println(base64);
}

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From source file:Main.java

public static void main(String args[]) throws Exception {
    InputStream fis = new FileInputStream("a.exe");

    byte[] buffer = new byte[1024];
    MessageDigest complete = MessageDigest.getInstance("MD5");
    int numRead;/*  w  w w . j ava 2 s. com*/
    do {
        numRead = fis.read(buffer);
        if (numRead > 0) {
            complete.update(buffer, 0, numRead);
        }
    } while (numRead != -1);
    fis.close();

    byte[] b = complete.digest();
    String result = "";
    for (int i = 0; i < b.length; i++) {
        result += Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1);
    }
    System.out.println(result);

}

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From source file:com.lightboxtechnologies.spectrum.Uploader.java

public static void main(String[] args) throws Exception {
    final Configuration conf = new Configuration();
    final String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

    if (otherArgs.length != 1) {
        System.err.println("Usage: Uploader <dest path>");
        System.err.println("Writes data to HDFS path from stdin");
        System.exit(2);//from  ww w.  j  av  a2s .  co  m
    }

    MessageDigest hasher = FsEntryUtils.getHashInstance("MD5");
    DigestInputStream hashedIn = new DigestInputStream(System.in, hasher);

    FileSystem fs = FileSystem.get(conf);
    Path path = new Path(otherArgs[0]);
    FSDataOutputStream outFile = fs.create(path, true);

    IOUtils.copyLarge(hashedIn, outFile, new byte[1024 * 1024]);

    System.out.println(new String(Hex.encodeHex(hasher.digest())));
}

---

From source file:MD5.java

public static void main(String[] args) {

    //String password = args[0];
    String password = "test";

    MessageDigest digest = null;

    try {//from w  w  w  .j  ava2 s  . co m
        digest = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    try {
        digest.update(password.getBytes("UTF-8"));
    } catch (UnsupportedEncodingException ex) {
        ex.printStackTrace();
    }

    byte[] rawData = digest.digest();
    StringBuffer printable = new StringBuffer();

    for (int i = 0; i < rawData.length; i++) {
        printable.append(carr[((rawData[i] & 0xF0) >> 4)]);
        printable.append(carr[(rawData[i] & 0x0F)]);
    }
    String phpbbPassword = printable.toString();

    System.out.println("PHPBB           : " + phpbbPassword);
    System.out.println("MVNFORUM        : " + getMD5_Base64(password));
    System.out.println("PHPBB->MVNFORUM : " + getBase64FromHEX(phpbbPassword));
}

---

From source file:Main.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream("test");
    MessageDigest md = MessageDigest.getInstance("SHA");
    DigestInputStream dis = new DigestInputStream(fis, md);
    ObjectInputStream ois = new ObjectInputStream(dis);
    Object o = ois.readObject();/*from www. j  av  a2s.  c o m*/
    if (!(o instanceof String)) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    String data = (String) o;
    System.out.println("Got message " + data);
    dis.on(false);
    o = ois.readObject();
    if (!(o instanceof byte[])) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    byte origDigest[] = (byte[]) o;
    System.out.println(MessageDigest.isEqual(md.digest(), origDigest));
}

---

From source file:net.sf.jsignpdf.InstallCert.java

/**
 * The main - whole logic of Install Cert Tool.
 * //from  www .  jav  a2  s.  c  o m
 * @param args
 * @throws Exception
 */
public static void main(String[] args) {
    String host;
    int port;
    char[] passphrase;

    System.out.println("InstallCert - Install CA certificate to Java Keystore");
    System.out.println("=====================================================");

    final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

    try {
        if ((args.length == 1) || (args.length == 2)) {
            String[] c = args[0].split(":");
            host = c[0];
            port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
            String p = (args.length == 1) ? "changeit" : args[1];
            passphrase = p.toCharArray();
        } else {
            String tmpStr;
            do {
                System.out.print("Enter hostname or IP address: ");
                tmpStr = StringUtils.defaultIfEmpty(reader.readLine(), null);
            } while (tmpStr == null);
            host = tmpStr;
            System.out.print("Enter port number [443]: ");
            tmpStr = StringUtils.defaultIfEmpty(reader.readLine(), null);
            port = tmpStr == null ? 443 : Integer.parseInt(tmpStr);
            System.out.print("Enter keystore password [changeit]: ");
            tmpStr = reader.readLine();
            String p = "".equals(tmpStr) ? "changeit" : tmpStr;
            passphrase = p.toCharArray();
        }

        char SEP = File.separatorChar;
        final File dir = new File(System.getProperty("java.home") + SEP + "lib" + SEP + "security");
        final File file = new File(dir, "cacerts");

        System.out.println("Loading KeyStore " + file + "...");
        InputStream in = new FileInputStream(file);
        KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(in, passphrase);
        in.close();

        SSLContext context = SSLContext.getInstance("TLS");
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(ks);
        X509TrustManager defaultTrustManager = (X509TrustManager) tmf.getTrustManagers()[0];
        SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
        context.init(null, new TrustManager[] { tm }, null);
        SSLSocketFactory factory = context.getSocketFactory();

        System.out.println("Opening connection to " + host + ":" + port + "...");
        SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
        socket.setSoTimeout(10000);
        try {
            System.out.println("Starting SSL handshake...");
            socket.startHandshake();
            socket.close();
            System.out.println();
            System.out.println("No errors, certificate is already trusted");
        } catch (SSLException e) {
            System.out.println();
            System.out.println("Certificate is not yet trusted.");
            //        e.printStackTrace(System.out);
        }

        X509Certificate[] chain = tm.chain;
        if (chain == null) {
            System.out.println("Could not obtain server certificate chain");
            return;
        }

        System.out.println();
        System.out.println("Server sent " + chain.length + " certificate(s):");
        System.out.println();
        MessageDigest sha1 = MessageDigest.getInstance("SHA1");
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        for (int i = 0; i < chain.length; i++) {
            X509Certificate cert = chain[i];
            System.out.println(" " + (i + 1) + " Subject " + cert.getSubjectDN());
            System.out.println("   Issuer  " + cert.getIssuerDN());
            sha1.update(cert.getEncoded());
            System.out.println("   sha1    " + toHexString(sha1.digest()));
            md5.update(cert.getEncoded());
            System.out.println("   md5     " + toHexString(md5.digest()));
            System.out.println();
        }

        System.out.print("Enter certificate to add to trusted keystore or 'q' to quit [1]: ");
        String line = reader.readLine().trim();
        int k = -1;
        try {
            k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
        } catch (NumberFormatException e) {
        }

        if (k < 0 || k >= chain.length) {
            System.out.println("KeyStore not changed");
        } else {
            try {
                System.out.println("Creating keystore backup");
                final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
                final File backupFile = new File(dir,
                        CACERTS_KEYSTORE + "." + dateFormat.format(new java.util.Date()));
                final FileInputStream fis = new FileInputStream(file);
                final FileOutputStream fos = new FileOutputStream(backupFile);
                IOUtils.copy(fis, fos);
                fis.close();
                fos.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println("Installing certificate...");

            X509Certificate cert = chain[k];
            String alias = host + "-" + (k + 1);
            ks.setCertificateEntry(alias, cert);

            OutputStream out = new FileOutputStream(file);
            ks.store(out, passphrase);
            out.close();

            System.out.println();
            System.out.println(cert);
            System.out.println();
            System.out.println("Added certificate to keystore '" + file + "' using alias '" + alias + "'");
        }
    } catch (Exception e) {
        System.out.println();
        System.out.println("----------------------------------------------");
        System.out.println("Problem occured during installing certificate:");
        e.printStackTrace();
        System.out.println("----------------------------------------------");
    }
    System.out.println("Press Enter to finish...");
    try {
        reader.readLine();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:ch.bfh.evoting.verifier.Verifier.java

/**
 * This program is a verifier for MobiVote application with HKRS12 protocol
 * You have to indicate the XML file exported from the application as argument for this program.
 * You can also indicate the files of different participants. In this case, there will be checked if all files contain the same values.
 * @param args the file(s) containing the values of the protocol
 *///w  w  w .  j a  v  a2 s. c o  m
public static void main(String[] args) {

    /*
     * Reading files given as parameters
     */
    if (args.length < 1) {
        //Not enough arguments
        System.out.println(
                "You must indicate the location of the XML file containing the data to verify! You can also indicate the files of different participants.");
        return;
    } else if (args.length > 1) {
        //Make a digest of all files and compare them
        List<byte[]> digests = new ArrayList<byte[]>();
        for (String s : args) {
            try {
                MessageDigest md = MessageDigest.getInstance("SHA-256");

                InputStream is = Files.newInputStream(Paths.get(s));
                DigestInputStream dis = new DigestInputStream(is, md);
                @SuppressWarnings("unused")
                int numBytes = -1;
                while ((numBytes = dis.read()) != -1) {
                    dis.read();
                }

                byte[] digest = md.digest();
                digests.add(digest);

            } catch (IOException e) {
                System.out.println("One of the given files does not exists!");
                return;
            } catch (NoSuchAlgorithmException e1) {
                System.out.println("Unable to compute the digest of the file!");
                return;
            }
        }
        System.out.print("Checking the similarity of the files...");
        for (byte[] b : digests) {
            for (byte[] b2 : digests) {
                if (!Arrays.equals(b, b2)) {
                    System.out.print("\t\t\t\t\t\t\t\t\t\tWRONG\n");
                    System.out.println(
                            "The given files are not all identical! This means the content received by the participants was not the same.");
                    return;
                }
            }
        }
        System.out.print("\t\t\t\t\t\t\t\t\t\tOK\n\n");
    } else if (args.length == 1) {
        //Print a warning
        System.out.println(
                "BE CAREFUL: checking only one file ensure that the cryptographic values of the protocol are correct.\n"
                        + "But, it does NOT ensure that all users have the same result. This could happen when a participant missed some messages.\n"
                        + "This case is only covered by this verifier by giving multiple files as argument.\n");
    }

    Serializer serializer = new Persister();
    File source = new File(args[0]);

    poll = null;
    System.out.print("Reading file...");
    try {
        poll = serializer.read(XMLPoll.class, source);
        System.out.print("\t\t\t\t\t\t\t\t\t\t\t\t\tOK\n");
    } catch (Exception e) {
        System.out.print("\t\t\t\t\t\t\t\t\t\t\t\t\tFAILED\n");
        e.printStackTrace();
        return;
    }

    /*
     * Create the initializations needed by the protocol
     */
    G_q = GStarModSafePrime.getInstance(new BigInteger(poll.getP()));
    Z_q = G_q.getZModOrder();
    Zgroup = Z.getInstance();
    generator = poll.getGenerator().getValue(G_q);

    representations = new Element[poll.getOptions().size()];
    int i = 0;
    for (XMLOption op : poll.getOptions()) {
        representations[i] = op.getRepresentation().getValue(Z_q);
        i++;
    }

    System.out.println();
    System.out.println("Verifying vote: \"" + poll.getQuestion() + "\"");

    /*
     * Verify the dependence between cryptographic values and the vote properties
     */
    //Not used anymore, implicitly done with otherInputs of proofs
    //verifyDependencyTextCrypto();

    /*
     * Verify the proofs for the user
     */
    System.out.println();
    System.out.println("Verifying the proof for the participants...");
    a = new Element[poll.getParticipants().size()];
    b = new Element[poll.getParticipants().size()];
    h = new Element[poll.getParticipants().size()];
    hHat = new Element[poll.getParticipants().size()];
    hHatPowX = new Element[poll.getParticipants().size()];
    proofForX = new Element[poll.getParticipants().size()];
    validityProof = new Element[poll.getParticipants().size()];
    equalityProof = new Element[poll.getParticipants().size()];
    Tuple pollTuple = preparePollOtherInput(poll, representations, generator);

    int k = 0;
    for (XMLParticipant p : poll.getParticipants()) {
        System.out.println("\tParticipant " + p.getIdentification() + " (" + p.getUniqueId() + ")");

        if (p.getAi() != null) {
            a[k] = p.getAi().getValue(G_q);
            if (DEBUG)
                System.out.println("Value a: " + a[k]);
        }
        if (p.getHi() != null) {
            h[k] = p.getHi().getValue(G_q);
            if (DEBUG)
                System.out.println("Value h: " + h[k]);
        }
        if (p.getBi() != null) {
            b[k] = p.getBi().getValue(G_q);
            if (DEBUG)
                System.out.println("Value b: " + b[k]);
        }
        if (p.getHiHat() != null) {
            hHat[k] = p.getHiHat().getValue(G_q);
            if (DEBUG)
                System.out.println("Value h hat: " + hHat[k]);
        }
        if (p.getHiHatPowXi() != null) {
            hHatPowX[k] = p.getHiHatPowXi().getValue(G_q);
            if (DEBUG)
                System.out.println("Value h hat ^ x: " + hHatPowX[k]);
        }

        if (p.getProofForXi() != null) {
            ProductGroup group = ProductGroup.getInstance(G_q, Zgroup, Z_q);

            proofForX[k] = p.getProofForXi().getValue(group);
        }

        if (p.getProofValidVote() != null) {

            Group[] tripleElement1Groups = new Group[poll.getOptions().size()];
            Group[] tripleElement2Groups = new Group[poll.getOptions().size()];
            Group[] tripleElement3Groups = new Group[poll.getOptions().size()];
            for (i = 0; i < poll.getOptions().size(); i++) {
                tripleElement1Groups[i] = ProductGroup.getInstance(G_q, G_q);
                tripleElement2Groups[i] = Zgroup;
                tripleElement3Groups[i] = Z_q;
            }
            ProductGroup tripleElement1 = ProductGroup.getInstance(tripleElement1Groups);
            ProductGroup tripleElement2 = ProductGroup.getInstance(tripleElement2Groups);
            ProductGroup tripleElement3 = ProductGroup.getInstance(tripleElement3Groups);
            ProductGroup group = ProductGroup.getInstance(tripleElement1, tripleElement2, tripleElement3);

            validityProof[k] = p.getProofValidVote().getValue(group);

            if (DEBUG)
                System.out.println("Proof of validity: " + validityProof[k]);
        }

        if (p.getProofForHiHat() != null) {
            recoveryNeeded = true;
            ProductGroup group = ProductGroup.getInstance(ProductGroup.getInstance(G_q, G_q), Zgroup, Z_q);

            equalityProof[k] = p.getProofForHiHat().getValue(group);
        }

        Tuple participantTuple = prepareParticipantOtherInput(p);
        otherInput = Tuple.getInstance(participantTuple, pollTuple);

        /*
         * Verify proof of knowledge 
         */
        System.out.print("\t\tVerifying proof of knowledge of x value...");
        verifyProofOfKnowledgeOfX(k);

        /*
         * Verify proof of validity 
         */
        if (validityProof[k] != null) {
            System.out.print("\t\tVerifying proof of valid vote...");
            verifyValidityProof(k);
        }

        /*
         * Verify proof of equality 
         */
        if (equalityProof[k] != null) {
            System.out.print("\t\tVerifying proof of equality between discrete logarithm g^x and h_hat^x...");
            verifyEqualityProof(k);
        }
        k++;
    }

    /**
     * Computing the result
     */
    System.out.println();
    System.out.print("Computing the result...");
    computeResult();

}

---

From source file:Main.java

public static byte[] md5(byte[] bytes) throws Exception {
    MessageDigest md = MessageDigest.getInstance("MD5Util");
    md.update(bytes);// www . jav  a  2  s.co  m
    return md.digest();
}

---

From source file:Main.java

public static byte[] md5Byte(String encryptStr) throws Exception {
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.update(encryptStr.getBytes("UTF-8"));
    return md.digest();
}

---

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