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(byte[] input)

Source Link

Document

Performs a final update on the digest using the specified array of bytes, then completes the digest computation.

Usage

From source file:lib.clases_cripto.java

public static String Encriptar(String texto) {

    String secretKey = "qualityinfosolutions"; //llave para encriptar datos
    String base64EncryptedString = "";

    try {/*from   ww w.  jav  a2  s.c o m*/

        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(texto.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        Md5Crypt.md5Crypt(keyBytes);
        SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);

        base64EncryptedString = new String(base64Bytes);

    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:BD.Encriptador.java

public static String Encriptar(String texto) {

    String secretKey = "qualityinfosolutions"; //llave para encriptar datos
    String base64EncryptedString = "";

    try {//www .  j  a v a 2s.  co  m

        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(secretKey.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);

        SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);

        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);
        base64EncryptedString = new String(base64Bytes);

    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:Main.java

public static byte[] halfSHA512(byte[] bytesToHash) {
    try {//from   w ww .  j a  v  a  2  s . com
        MessageDigest sha512Digest = MessageDigest.getInstance("SHA-512");
        byte[] bytesHash = sha512Digest.digest(bytesToHash);
        byte[] first256BitsOfHash = copyOf(bytesHash, 32);
        return first256BitsOfHash;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.amazonaws.util.Md5Utils.java

/**
 * Computes the MD5 hash of the given data and returns it as an array of
 * bytes.//from w  w w  .  j  a v  a2 s.c  o m
 */
public static byte[] computeMD5Hash(byte[] input) {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        return md.digest(input);
    } catch (NoSuchAlgorithmException e) {
        // should never get here
        throw new IllegalStateException(e);
    }
}

From source file:com.astamuse.asta4d.web.util.SecureIdGenerator.java

public static String createEncryptedURLSafeId() {
    try {/*from   w  ww .j ava 2s  . com*/
        byte[] idBytes = IdGenerator.createIdBytes();

        ByteBuffer bb = ByteBuffer.allocate(idBytes.length + 4);
        bb.put(idBytes);

        // add random salt
        bb.putInt(sr.nextInt());

        MessageDigest crypt = MessageDigest.getInstance("SHA-1");
        return Base64.encodeBase64URLSafeString(crypt.digest(bb.array()));

    } catch (NoSuchAlgorithmException e) {
        // impossible
        throw new RuntimeException(e);
    }
}

From source file:jp.terasoluna.fw.util.HashUtil.java

/**
 * ??????/*from ww w .  j  av  a  2s  . co m*/
 *
 * @param algorithm ?
 * @param str ????
 * @return ?
 * @throws NoSuchAlgorithmException ???????
 * 
 */
public static byte[] hash(String algorithm, String str) throws NoSuchAlgorithmException {
    if (algorithm == null || str == null) {
        return null;
    }
    MessageDigest md = MessageDigest.getInstance(algorithm.toUpperCase());
    return md.digest(str.getBytes());
}

From source file:com.formatAdmin.utils.UtilsSecurity.java

public static String cifrarMD5(String texto) {
    String base64EncryptedString = "";
    try {// ww  w  . j a va  2  s.  c o  m
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(SECRET_MD5_KEY.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);

        SecretKey key = new SecretKeySpec(keyBytes, ENCRYPT_ALGORITHM);
        Cipher cipher = Cipher.getInstance(ENCRYPT_ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, key);

        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);
        base64EncryptedString = new String(base64Bytes);

    } catch (UnsupportedEncodingException | InvalidKeyException | NoSuchAlgorithmException | BadPaddingException
            | IllegalBlockSizeException | NoSuchPaddingException ex) {
    }
    return base64EncryptedString;
}

From source file:com.formatAdmin.utils.UtilsSecurity.java

public static String decifrarMD5(String textoEncriptado) throws Exception {
    String base64EncryptedString = "";

    try {/*from   www . j  a  va2s.  c o  m*/
        byte[] message = Base64.decodeBase64(textoEncriptado.getBytes("utf-8"));
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(SECRET_MD5_KEY.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        SecretKey key = new SecretKeySpec(keyBytes, ENCRYPT_ALGORITHM);

        Cipher decipher = Cipher.getInstance(ENCRYPT_ALGORITHM);
        decipher.init(Cipher.DECRYPT_MODE, key);

        byte[] plainText = decipher.doFinal(message);

        base64EncryptedString = new String(plainText, "UTF-8");

    } catch (UnsupportedEncodingException | InvalidKeyException | NoSuchAlgorithmException | BadPaddingException
            | IllegalBlockSizeException | NoSuchPaddingException ex) {
        throw ex;
    }
    return base64EncryptedString;
}

From source file:Main.java

/** Calculates the MD5 hash of a given string 
 * @author Tom V. http://m2tec.be/blog/2010/02/03/java-md5-hex-0093 
 * @param stringToBeHashed the string to be hashed 
 * @return the MD5 hash as a string //from w ww.  j  av  a  2 s .  c  om
 * @throws NoSuchAlgorithmException */
public static String stringToMD5(String stringToBeHashed) throws NoSuchAlgorithmException {
    MessageDigest messageDigest = MessageDigest.getInstance("MD5");
    StringBuffer md5Hash = new StringBuffer();
    byte[] array = messageDigest.digest(stringToBeHashed.getBytes());

    for (int i = 0; i < array.length; i++) {
        md5Hash.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3));
    }

    return md5Hash.toString();
}

From source file:com.amazon.proposalcalculator.reader.StandByInstances.java

/**
 * Returns a hexadecimal encoded MD5 hash for the input String.
 *//*from w  ww .j a  va  2  s  .co  m*/
private static String getMD5Hash(String data, int size) {
    String result = null;
    try {
        MessageDigest digest = MessageDigest.getInstance("MD5");

        byte[] hash = digest.digest(data.getBytes("UTF-8"));

        return bytesToHex(hash, size); // make it printable

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return result;
}