Java Utililty Methods Hash Calculate

List of utility methods to do Hash Calculate

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Description

The list of methods to do Hash Calculate are organized into topic(s).

Method

StringgetHash(String Data)
get Hash 
try {
    MessageDigest sha = MessageDigest.getInstance("SHA-512");
    sha.update(Data.getBytes());
    byte result[] = sha.digest();
    StringBuilder sb = new StringBuilder();
    for (byte data : result) {
        sb.append(Integer.toString((data & 0xff) + 0x100, 16).substring(1));
    return sb.toString();
} catch (Exception e) {
    e.printStackTrace();
return null;
StringgetHash(String fileName, String hashType)
get Hash 
InputStream fis;
fis = new FileInputStream(fileName);
byte[] buffer = new byte[1024];
MessageDigest md5 = MessageDigest.getInstance(hashType);
int numRead = 0;
while ((numRead = fis.read(buffer)) > 0) {
    md5.update(buffer, 0, numRead);
fis.close();
return byteArrayToHexString(md5.digest());
StringgetHash(String givenStr)
Get hash sum of given string. 
StringBuffer hexString = new StringBuffer();
try {
    java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
    md.update(givenStr.getBytes());
    byte[] hash = md.digest();
    for (int i = 0; i < hash.length; i++) {
        if ((0xff & hash[i]) < 0x10) {
            hexString.append("0" + Integer.toHexString((0xFF & hash[i])));
...
StringgetHash(String input)
get Hash 
input += "vkoqasnm";
try {
    java.security.MessageDigest md = java.security.MessageDigest.getInstance("SHA-1");
    byte[] array = md.digest(input.getBytes());
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < array.length; ++i) {
        sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3));
    return sb.toString();
} catch (java.security.NoSuchAlgorithmException e) {
    throw new RuntimeException(e);
StringgetHash(String input)
Return a hash of the given String . 
try {
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.update(input.getBytes());
    byte byteData[] = md.digest();
    StringBuffer hexString = new StringBuffer();
    for (int i = 0; i < byteData.length; i++) {
        String hex = Integer.toHexString(0xff & byteData[i]);
        if (hex.length() == 1)
...
byte[]getHash(String key)
get Hash 
byte[] hash = new byte[6];
System.arraycopy(md5.digest(key.getBytes(Charset.forName("UTF-8"))), 0, hash, 0, 6);
return hash;
StringgetHash(String message)
get Hash 
return getHash(message, "MD5");
byte[]getHash(String pass, String algorithm)
get Hash 
MessageDigest md = MessageDigest.getInstance(algorithm);
md.update(pass.getBytes());
byte[] hash = md.digest();
return hash;
StringgetHash(String password, byte[] salt)
From a password returns the corresponding digest using a generated salt 
char[] passChars = password.toCharArray();
PBEKeySpec spec = new PBEKeySpec(passChars, salt, ITERATION_NUMBER, 512);
SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
byte[] hash = skf.generateSecret(spec).getEncoded();
return byteToBase64(salt) + ":" + byteToBase64(hash);
byte[]getHash(String password, byte[] salt)
get Hash 
MessageDigest digest = MessageDigest.getInstance("SHA-256");
digest.reset();
digest.update(salt);
byte[] input = digest.digest(password.getBytes("UTF-8"));
for (int i = 0; i < 13; i++) {
    digest.reset();
    input = digest.digest(input);
return input;