Examples of java.security.MessageDigest.reset()

java.security.MessageDigest.reset()
Resets the digest for further use.

   */
  private static String generateByteHash(String id)
  {
    try {
      final MessageDigest messageDigest = MessageDigest.getInstance("MD5");
      messageDigest.reset();
      messageDigest.update(id.getBytes(Charset.forName("UTF8")));
      final byte[] resultsByte = messageDigest.digest();
      String hash = new String(Hex.encodeHex(resultsByte));


      final int length = 8;

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        } catch (Exception e) {
            mLogger.error("Exception: " + e);
            return password;
        }
        
        md.reset();
        
        // call the update method one or more times
        // (useful when you don't know the size of your data, eg. stream)
        md.update(unencodedPassword);

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     * @return An hexadecimal Hash
     */
    public String hexMD5(String value) {
        try {
            MessageDigest messageDigest = MessageDigest.getInstance(Hash.MD5.toString());
            messageDigest.reset();
            messageDigest.update(value.getBytes(UTF_8));
            byte[] digest = messageDigest.digest();
            return String.valueOf(Hex.encodeHex(digest));
        } catch (Exception ex) {
            throw new RuntimeException(ex);

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            if (saltPhrase != null) {
                md.update(saltPhrase.getBytes());
                byte[] salt = md.digest();


                md.reset();
                md.update(password.getBytes());
                md.update(salt);
            } else {
                md.update(password.getBytes());
            }

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            alg = MessageDigest.getInstance("SHA-1");
        } catch (NoSuchAlgorithmException ex) {
            // this should never happen
            throw new MathInternalError(ex);
        }
        alg.reset();


        // Compute number of iterations required (40 bytes each)
        int numIter = (len / 40) + 1;


        StringBuilder outBuffer = new StringBuilder();

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        try {
            md = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("Unable to locate MD5 hash algorithm", e);
        }
        md.reset();
        //byte[] thedigest = md.digest(bytesOfScript);
        md.update(bytesOfScript);
        byte[] messageDigest = md.digest();
        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < messageDigest.length; i++) {

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    // produce encrypted message
    Cipher cipher = encrypt.getSymEncodingCipher();
    
    MessageDigest digest = MessageDigest.getInstance("MD5");
    digest.reset();
    digest.update(encrypt.getDesKey().getEncoded());
       
    String symVersion = new String(digest.digest(), "UTF-8");
    
    encrypt.keyServer = false;

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    peer.setObserver(peerObserver);
    peer.keyServer = false;
    
    
    MessageDigest digest = MessageDigest.getInstance("MD5");
    digest.reset();
    digest.update(server.getDesKey().getEncoded());
       
    String symVersion = new String(digest.digest(), "UTF-8");
    
    // encrypt and send an initial message to peer

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    Cipher cipher = encrypt2.getSymEncodingCipher();
    byte[] encodedBytes = cipher.doFinal(messageText.getBytes());
    assertNotSame(new String(encodedBytes),messageText);
    
    MessageDigest digest = MessageDigest.getInstance("MD5");
    digest.reset();
    digest.update(encrypt.getDesKey().getEncoded());
       
    String symVersion = new String(digest.digest(), "UTF-8");
    
    Message msg = new Message(null,null,encodedBytes);

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    Cipher cipher = encrypt2.getSymEncodingCipher();
    byte[] encodedBytes = cipher.doFinal(messageText.getBytes());
    assertNotSame(new String(encodedBytes),messageText);
    
    MessageDigest digest = MessageDigest.getInstance("MD5");
    digest.reset();
    digest.update(encrypt2.getDesKey().getEncoded());
       
    String symVersion = new String(digest.digest());
    
    Message msg = new Message(null,null,encodedBytes);

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