Java Utililty Methods Hash Code Calculate

List of utility methods to do Hash Code Calculate

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Description

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

Method

StringgenerateHash(String item)
generate Hash 
String generatedPassword = null;
try {
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.update(item.getBytes());
    byte[] bytes = md.digest();
    generatedPassword = ByteArrayToString(bytes);
} catch (NoSuchAlgorithmException e) {
    throw new NoSuchAlgorithmException(e);
...
StringgenerateHash(String plaintext)
generate Hash 
try {
    StringBuilder hash = new StringBuilder();
    MessageDigest sha = MessageDigest.getInstance("SHA-1");
    byte[] hashedBytes = sha.digest(plaintext.getBytes());
    char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
    for (int idx = 0; idx < hashedBytes.length; ++idx) {
        byte b = hashedBytes[idx];
        hash.append(digits[(b & 0xf0) >> 4]);
...
StringgenerateHash(String plainText, String hashType)
generate Hash 
MessageDigest md = MessageDigest.getInstance(hashType); 
byte[] data = plainText.getBytes();
md.update(data); 
byte[] digest = md.digest();
return byteArrayToString(digest).toUpperCase();
StringgenerateHash(String serviceUri, String username, String password)
generate Hash 
StringBuilder hashkey = new StringBuilder();
String hash = null;
hashkey.append(serviceUri);
hashkey.append(username);
hashkey.append(password);
try {
    MessageDigest sha = MessageDigest.getInstance("SHA-1");
    sha.reset();
...
StringgenerateHash(String target)
generate Hash 
if (target != null) {
    String hash = null;
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] bytes = md.digest(target.getBytes());
        StringBuffer buff = new StringBuffer();
        for (int l = 0; l < bytes.length; l++) {
            String hx = Integer.toHexString(0xFF & bytes[l]);
...
StringgenerateHash(String tcString)
Generates a SHA-1 hashcode from the input 
try {
    MessageDigest loMD = MessageDigest.getInstance("SHA1");
    loMD.reset();
    byte[] laBuffer = tcString.getBytes();
    loMD.update(laBuffer);
    byte[] laDigest = loMD.digest();
    StringBuffer loReturn = new StringBuffer("");
    for (int i = 0, lnLength = laDigest.length; i < lnLength; i++) {
...
StringgenerateHashSalt(int length)
Generates a string of random alphanumeric characters of the given length. 
SecureRandom random = new SecureRandom();
StringBuffer salt = new StringBuffer(length);
for (int i = 0; i < length; i++)
    salt.append(chars[random.nextInt(chars.length)]);
return salt.toString();
UUIDgenerateHashUUID(String digestData)
generate Hash UUID 
MessageDigest md5;
try {
    md5 = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException exception) {
    return UUID.randomUUID();
md5.update(digestData.getBytes());
byte[] data = md5.digest();
...
inthashCode(boolean b)
hash Code 
return b ? 1231 : 1237;
inthashCode(boolean b)
hash Code 
return b ? Boolean.TRUE.hashCode() : Boolean.FALSE.hashCode();