Example usage for java.security MessageDigest reset

Introduction

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

Prototype

public void reset() 

Source Link

Document

Resets the digest for further use.

Usage

From source file:wptools.lib.Misc.java

/**
 * Bypass the normal SSL certificate authentication. If the passed
 * fingerprint is null, bypasses all authentication (dangerous).
 * Else trust anything whose chain contains a cert with the specified
 * fingerprint.//from  w ww. j a  va2  s  .  co  m
 * @param fing      Fingerprint
 */
public static void bypassSslAuth(final byte[] fing) {
    // Determine fingerprint type from its length
    final String type;
    if (fing == null) {
        type = null;
    } else {
        switch (fing.length) {
        case MD5_LEN:
            type = "MD5";
            break;
        case SHA1_LEN:
            type = "SHA-1";
            break;
        case SHA256_LEN:
            type = "SHA-256";
            break;
        default:
            throw new IllegalArgumentException("Invalid hash.");
        }
    }

    // Create a trust manager
    TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public void checkClientTrusted(X509Certificate[] certs, String authType) throws CertificateException {
            matchFing(certs);
        }

        public void checkServerTrusted(X509Certificate[] certs, String authType) throws CertificateException {
            matchFing(certs);
        }

        private void matchFing(X509Certificate[] certs) throws CertificateException {
            if (fing == null)
                return;
            MessageDigest md = null;
            try {
                md = MessageDigest.getInstance(type);
            } catch (NoSuchAlgorithmException e) {
                throw new CertificateException(e);
            }
            for (X509Certificate cert : certs) {
                md.reset();
                if (Arrays.equals(md.digest(cert.getEncoded()), fing))
                    return;
            }
            throw new CertificateException("No matching fingerprint found.");
        }
    } };

    // Install the trust manager
    SSLContext sc = null;
    try {
        sc = SSLContext.getInstance("SSL");
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }

    // Create empty HostnameVerifier
    HostnameVerifier hv = new HostnameVerifier() {
        public boolean verify(String arg0, SSLSession arg1) {
            return true;
        }
    };

    try {
        sc.init(null, trustAllCerts, new java.security.SecureRandom());
    } catch (KeyManagementException e) {
        throw new RuntimeException(e);
    }
    HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
    HttpsURLConnection.setDefaultHostnameVerifier(hv);
}

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From source file:org.spirit.util.BotListUniqueId.java

public static final String getUniqueId() {

    String digest = "";

    try {/*from   ww w. ja va2 s  . c  o  m*/
        MessageDigest md = MessageDigest.getInstance("MD5");

        String timeVal = "" + (System.currentTimeMillis() + 1);
        String localHost = "";
        ;
        try {
            localHost = InetAddress.getLocalHost().toString();
        } catch (UnknownHostException e) {
            // If an error, we can use other values.
            log.error("Error trying to get localhost" + e.getMessage());
        }

        String randVal = "" + new Random().nextInt();
        String val = timeVal + localHost + randVal;
        md.reset();
        md.update(val.getBytes());

        // Generate the digest.
        digest = toHexString(md.digest());
    } catch (NoSuchAlgorithmException e) {
        log.error("Error trying to generate unique Id" + e.getMessage());
    } // End of the Try - Catch

    return digest;
}

---

From source file:com.mnt.base.web.DigestAuthenticator.java

static public String md5(String sb, char[] passwd) {

    byte[] unencodedPassword = sb.toString().getBytes();

    MessageDigest md = null;

    try {/*  w ww. ja  v  a 2  s . c om*/
        md = MessageDigest.getInstance("MD5");
    } catch (Exception e) {
        return sb.toString();
    }

    md.reset();
    md.update(unencodedPassword);

    for (int i = 0; i < passwd.length; i++) {
        md.update((byte) passwd[i]);
    }

    byte[] digest = md.digest();
    //StringBuffer buf = new StringBuffer();

    /*char j;
    for (int i = 0; i < encodedPassword.length; i++) {
               
       j = (char)((encodedPassword[i] >> 4) & 0xf);
               
       if(j <= 9) {
    buf.append((char)(j + '0'));
       } else {
    buf.append((char)(j + 'a' - 10));
       }
               
       j = (char)((encodedPassword[i]) & 0xf);
               
       if(j <= 9) {
    buf.append((char)(j + '0'));
       } else {
    buf.append((char)(j + 'a' - 10));
       }
    }*/

    StringBuffer res = new StringBuffer(digest.length * 2);
    for (int i = 0; i < digest.length; i++) {
        int hashchar = ((digest[i] >>> 4) & 0xf);
        res.append(charArray[hashchar]);
        hashchar = (digest[i] & 0xf);
        res.append(charArray[hashchar]);
    }

    return res.toString();
}

---

From source file:com.mnt.base.web.DigestAuthenticator.java

static public String md5(String... ss) {
    StringBuilder sb = new StringBuilder();
    if (ss != null) {
        for (String si : ss) {
            sb.append(si);/*from ww  w.j  av  a  2 s .c o m*/
        }
    }

    byte[] unencodedPassword = sb.toString().getBytes();

    MessageDigest md = null;

    try {
        md = MessageDigest.getInstance("MD5");
    } catch (Exception e) {
        return sb.toString();
    }

    md.reset();
    md.update(unencodedPassword);
    byte[] digest = md.digest();
    //StringBuffer buf = new StringBuffer();

    /*char j;
    for (int i = 0; i < encodedPassword.length; i++) {
               
       j = (char)((encodedPassword[i] >> 4) & 0xf);
               
       if(j <= 9) {
    buf.append((char)(j + '0'));
       } else {
    buf.append((char)(j + 'a' - 10));
       }
               
       j = (char)((encodedPassword[i]) & 0xf);
               
       if(j <= 9) {
    buf.append((char)(j + '0'));
       } else {
    buf.append((char)(j + 'a' - 10));
       }
    }*/

    StringBuffer res = new StringBuffer(digest.length * 2);
    for (int i = 0; i < digest.length; i++) {
        int hashchar = ((digest[i] >>> 4) & 0xf);
        res.append(charArray[hashchar]);
        hashchar = (digest[i] & 0xf);
        res.append(charArray[hashchar]);
    }

    return res.toString();
}

---

From source file:fshp.FSHP.java

/**
 * Returns the hash of <tt>passwd</tt> 
 *
 * @param passwd Byte representation of clear text password.
 * @param salt Byte representation of salt to be used in hashing.
 * @param saltlen Length of the salt. Should be 0 if a salt is already
 *        provided. If salt is null, saltlen bytes of salt will be
 *        auto generated./*from  w  w  w.j  a  va2s . c om*/
 * @param rounds Number of hashing rounds.
 * @param variant FSHP variant indicating the behaviour and/or
 * <ul>
 *        <li><tt>0: SHA-1</tt> <em>(not recommended)</em></li>
 *        <li><tt>1: SHA-256</tt></li>
 *        <li><tt>2: SHA-384</tt></li>
 *        <li><tt>3: SHA-512</tt></li>
 * </ul>
 *
 * @return       FSHP hash of <tt>passwd</tt>
 */
public static String crypt(byte[] passwd, byte[] salt, int saltlen, int rounds, int variant) throws Exception {
    // Ensure we have sane values for salt length and rounds.
    if (saltlen < 0)
        saltlen = 0;
    if (rounds < 1)
        rounds = 1;

    if (salt == null) {
        salt = new byte[saltlen];
        new SecureRandom().nextBytes(salt);
    } else
        saltlen = salt.length;

    HashMap<Integer, String> algoMap = new HashMap<Integer, String>();
    algoMap.put(0, "SHA-1");
    algoMap.put(1, "SHA-256");
    algoMap.put(2, "SHA-384");
    algoMap.put(3, "SHA-512");

    MessageDigest md;
    try {
        if (!algoMap.containsKey(variant))
            throw new NoSuchAlgorithmException();

        md = MessageDigest.getInstance(algoMap.get(variant));
    } catch (NoSuchAlgorithmException e) {
        throw new Exception("Unsupported FSHP variant " + variant);
    }

    md.update(salt);
    md.update(passwd);
    byte[] digest = md.digest();

    for (int i = 1; i < rounds; i++) {
        md.reset();
        md.update(digest);
        digest = md.digest();
    }

    String meta = "{FSHP" + variant + "|" + saltlen + "|" + rounds + "}";

    byte[] saltdigest = new byte[salt.length + digest.length];
    System.arraycopy(salt, 0, saltdigest, 0, salt.length);
    System.arraycopy(digest, 0, saltdigest, salt.length, digest.length);

    byte[] b64saltdigest = Base64.encodeBase64(saltdigest);

    return meta + new String(b64saltdigest, "US-ASCII");
}

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From source file:org.craftercms.cstudio.alfresco.dm.util.DmUtils.java

public static String getMd5ForFile(InputStream input) {
    //PushbackInputStream helper = null;
    String result = null;//from ww  w . j a v  a 2 s .  c  o  m
    MessageDigest md = null;
    try {
        //helper = new PushbackInputStream(input);
        //InputStreamReader reader = new InputStreamReader(input);
        md = MessageDigest.getInstance("MD5");

        md.reset();
        byte[] bytes = new byte[1024];
        int numBytes;
        //input.mark(input.available());
        input.mark(Integer.MAX_VALUE);
        while ((numBytes = input.read(bytes)) != -1) {
            md.update(bytes, 0, numBytes);
        }
        byte[] digest = md.digest();
        result = new String(Hex.encodeHex(digest));
        input.reset();
    } catch (NoSuchAlgorithmException e) {
        logger.error("Error while creating MD5 digest", e);
    } catch (IOException e) {
        logger.error("Error while reading input stream", e);
    } finally {

    }
    return result;
}

---

From source file:org.zilverline.util.FileUtils.java

/**
 * Get the MD5 hash (unique identifier based on contents) of a file.
 * //from  ww  w.  ja v a 2 s  . c  om
 * <p>
 * N.B. This is an expensive operation, since the entire file is read.
 * </p>
 * 
 * @param sourceFile the File the MD5 hash is created from, can take null or not a normalFile
 * 
 * @return MD5 hash of file as a String, null if it can't create a hash.
 */
public static String getMD5Hash(final File sourceFile) {
    log.debug("Getting MD5 hash for " + sourceFile);

    final char[] HEX = "0123456789abcdef".toCharArray();

    if (sourceFile == null || !sourceFile.isFile()) {
        log.error("Error creating MD5 Hash for " + sourceFile);
        return null;
    }
    BufferedInputStream bis = null;
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        // IMessageDigest md = HashFactory.getInstance("MD5");
        if (md == null) {
            log.error("Error creating MessageDigest for " + sourceFile);
            return null;
        }

        bis = new BufferedInputStream(new FileInputStream(sourceFile));
        md.reset();
        int len = 0;
        byte[] buffer = new byte[8192];
        while ((len = bis.read(buffer)) > -1) {
            md.update(buffer, 0, len);
        }

        byte[] bytes = md.digest();
        if (bytes == null) {
            log.error("MessageDigest has no bytes for " + sourceFile);

            return null;
        }

        // base64? encode the digest
        StringBuffer sb = new StringBuffer(bytes.length * 2);
        int b;
        for (int i = 0; i < bytes.length; i++) {
            b = bytes[i] & 0xFF;
            sb.append(HEX[b >>> 4]);
            sb.append(HEX[b & 0x0F]);
        }

        log.debug("MD5 hash for " + sourceFile + " is " + sb);
        return sb.toString();
    } catch (Exception e) {
        log.error("Can't determine MD5 hash for " + sourceFile, e);

        return null;
    } finally {
        if (bis != null) {
            try {
                bis.close();
            } catch (IOException e) {
                log.warn("Can't close stream for " + sourceFile, e);
            }
        }
    }
}

---

From source file:com.google.sampling.experiential.model.Event.java

public static String getAnonymousId(String who) {
    MessageDigest messageDigest = null;
    try {//from   w  w  w  . j  av  a  2 s. c om
        messageDigest = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        //Log.info("Could not get MD5 algorithm");
        return null;
    }
    messageDigest.reset();
    messageDigest.update(who.getBytes(Charset.forName("UTF8")));
    byte[] resultByte = messageDigest.digest();
    return new String(Hex.encodeHex(resultByte));
}

---

From source file:org.openme_ck.openme_ck.java

public static JSONObject convert_str_to_sha1(JSONObject i) {
    /*/*from w w w.j ava2  s  .  c o m*/
    Convert string to sha1
            
    Input:  {
      string       - string
    }
            
    Output: {
      return             - return code >0 if not authentificated
      string_sha1        - password in SHA1 (digest)
      string_sha1_hex    - password in SHA1 (digest in hex)
      string_sha1_base64 - BASE64 (SHA1 digest) - compatible with htpasswd format
    }
    */

    byte[] sha1 = null;
    String sha1_hex = "";
    String sha1_base64 = "";

    // Prepare return object
    JSONObject r = new JSONObject();

    String x = (String) i.get("string");
    if (x == null || x == "") {
        r.put("return", new Long(1));
        r.put("error", "'string' is not set in openme/convert_str_to_sha1");
        return r;
    }

    try {
        MessageDigest crypt = MessageDigest.getInstance("SHA-1");
        crypt.reset();
        crypt.update(x.getBytes("UTF-8"));
        sha1 = crypt.digest();
        sha1_hex = byteToHexString(sha1);
        sha1_base64 = new String(Base64.encodeBase64(sha1));
    } catch (NoSuchAlgorithmException e) {
        r.put("return", new Long(0));
        r.put("error", "can't crypt password (" + e.getMessage() + ") ...");
        return r;
    } catch (UnsupportedEncodingException e) {
        r.put("return", new Long(0));
        r.put("error", "can't crypt password (" + e.getMessage() + ") ...");
        return r;
    }

    r.put("return", new Long(0));
    r.put("string_sha1", sha1.toString());
    r.put("string_sha1_hex", sha1_hex);
    r.put("string_sha1_base64", sha1_base64);
    return r;
}

---

From source file:org.openme.openme.java

public static JSONObject convert_str_to_sha1(JSONObject i) {
    /*/*from ww  w  .  j a  v a2s .  c o  m*/
    Convert string to sha1
            
    Input:  {
      cm_string       - string
    }
            
    Output: {
      cm_return             - return code >0 if not authentificated
      cm_string_sha1        - password in SHA1 (digest)
      cm_string_sha1_hex    - password in SHA1 (digest in hex)
      cm_string_sha1_base64 - BASE64 (SHA1 digest) - compatible with htpasswd format
    }
    */

    byte[] sha1 = null;
    String sha1_hex = "";
    String sha1_base64 = "";

    // Prepare return object
    JSONObject r = new JSONObject();

    String x = (String) i.get("cm_string");
    if (x == null || x == "") {
        r.put("cm_return", new Long(1));
        r.put("cm_error", "'cm_string' is not set in openme/convert_str_to_sha1");
        return r;
    }

    try {
        MessageDigest crypt = MessageDigest.getInstance("SHA-1");
        crypt.reset();
        crypt.update(x.getBytes("UTF-8"));
        sha1 = crypt.digest();
        sha1_hex = byteToHexString(sha1);
        sha1_base64 = new String(Base64.encodeBase64(sha1));
    } catch (NoSuchAlgorithmException e) {
        r.put("cm_return", new Long(0));
        r.put("cm_error", "can't crypt password (" + e.getMessage() + ") ...");
        return r;
    } catch (UnsupportedEncodingException e) {
        r.put("cm_return", new Long(0));
        r.put("cm_error", "can't crypt password (" + e.getMessage() + ") ...");
        return r;
    }

    r.put("cm_return", new Long(0));
    r.put("cm_string_sha1", sha1.toString());
    r.put("cm_string_sha1_hex", sha1_hex);
    r.put("cm_string_sha1_base64", sha1_base64);
    return r;
}

---

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