Example usage for javax.crypto SecretKeyFactory getInstance

Introduction

In this page you can find the example usage for javax.crypto SecretKeyFactory getInstance.

Prototype

public static final SecretKeyFactory getInstance(String algorithm) throws NoSuchAlgorithmException 

Source Link

Document

Returns a SecretKeyFactory object that converts secret keys of the specified algorithm.

Usage

From source file:egovframework.com.ext.jfile.security.service.CipherServiceImpl.java

/**
 *   ?./*  www  . j  av a2s  .c  o  m*/
 * @param keyAlgorithm  .
 * @param algorithm .
 * @param keyData  ??.
 * @return Key  .
 * @throws NoSuchAlgorithmException   ?  ?  .
 * @throws InvalidKeyException  ? key ?  
 * @throws InvalidKeySpecException  ? keySpec ?  
 */
private static Key generateKey(String keyAlgorithm, String algorithm, byte[] keyData)
        throws NoSuchAlgorithmException, InvalidKeyException, InvalidKeySpecException {
    if (keyAlgorithm == null || "".equals(keyAlgorithm))
        throw new NoSuchAlgorithmException("algorithm is nessary");
    String upper = keyAlgorithm.toUpperCase();
    if ("DES".equals(upper)) {
        KeySpec keySpec = new DESKeySpec(keyData);
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(keyAlgorithm);

        SecretKey secretKey = secretKeyFactory.generateSecret(keySpec);
        return secretKey;

    } else if (upper.indexOf("DESEDE") > -1 || upper.indexOf("TRIPLEDES") > -1) {
        KeySpec keySpec = new DESedeKeySpec(keyData);

        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(keyAlgorithm);
        SecretKey secretKey = secretKeyFactory.generateSecret(keySpec);
        return secretKey;
    } else {
        SecretKeySpec keySpec = new SecretKeySpec(keyData, keyAlgorithm);
        return keySpec;
    }
}

---

From source file:org.starnub.utilities.crypto.PasswordHash.java

/**
 * using PBKDF2 from Sun, an alternative is https://github.com/wg/scrypt
 * cf. http://www.unlimitednovelty.com/2012/03/dont-use-bcrypt.html
 * @param password String password to be salted
 * @param salt Byte[] of the salt//from  www  .j a va  2  s . c o  m
 * @return String of the hashed password
 * @throws Exception
 */
private String hash(String password, byte[] salt) throws Exception {
    if (password == null || password.length() == 0)
        throw new IllegalArgumentException("Empty passwords are not supported.");
    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    SecretKey key = f.generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLen));
    return Base64.encodeBase64String(key.getEncoded());
}

---

From source file:com.invariantproperties.sandbox.springentitylistener.service.EncryptorBean.java

/**
 * Constructor creates secret key. In production we may want to avoid
 * keeping the secret key hanging around in memory for very long.
 *///  w ww . j  a v  a2  s. c o  m
public EncryptorBean() {
    try {
        // create the PBE key
        KeySpec spec = new PBEKeySpec(PASSWORD, Base64.decode(SALT), 10000, 128);
        key = SecretKeyFactory.getInstance(PBE_ALGORITHM).generateSecret(spec);
    } catch (SecurityException ex) {
        // handle appropriately...
        System.out.println("encryptor bean ctor exception: " + ex.getMessage());
    } catch (NoSuchAlgorithmException ex) {
        // handle appropriately...
        System.out.println("encryptor bean ctor exception: " + ex.getMessage());
    } catch (InvalidKeySpecException ex) {
        // handle appropriately...
        System.out.println("encryptor bean ctor exception: " + ex.getMessage());
    }
}

---

From source file:net.bioclipse.encryption.Encrypter.java

public String decrypt(String encrypted) {
    SecretKeyFactory keyFac;/* w w w .j a  v  a2 s .  co m*/
    SecretKey pbeKey;
    Cipher pbeCipher;

    try {
        keyFac = SecretKeyFactory.getInstance(METHOD);
        pbeKey = keyFac.generateSecret(pbeKeySpec);
        pbeCipher = Cipher.getInstance(METHOD);
        pbeCipher.init(Cipher.DECRYPT_MODE, pbeKey, pbeParamSpec);
        return new String(pbeCipher.doFinal(Base64.decodeBase64(encrypted.getBytes())));
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalStateException(e);
    } catch (InvalidKeySpecException e) {
        throw new IllegalStateException(e);
    } catch (NoSuchPaddingException e) {
        throw new IllegalStateException(e);
    } catch (InvalidKeyException e) {
        throw new IllegalStateException(e);
    } catch (InvalidAlgorithmParameterException e) {
        throw new IllegalStateException(e);
    } catch (IllegalBlockSizeException e) {
        throw new IllegalStateException(e);
    } catch (BadPaddingException e) {
        throw new IllegalStateException(e);
    }
}

---

From source file:org.apache.xml.security.test.encryption.EncryptContentTest.java

public void setUp() throws Exception {

    org.apache.xml.security.Init.init();
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setNamespaceAware(true);/*w  w w. j  a  va  2s . c om*/
    db = dbf.newDocumentBuilder();

    byte[] bits192 = "abcdefghijklmnopqrstuvwx".getBytes();
    DESedeKeySpec keySpec = new DESedeKeySpec(bits192);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");
    secretKey = keyFactory.generateSecret(keySpec);

    TransformerFactory tf = TransformerFactory.newInstance();
    tf.newTransformer();

    // Determine if we have ISO 10126 Padding - needed for Bulk AES or
    // 3DES encryption

    haveISOPadding = false;
    String algorithmId = JCEMapper
            .translateURItoJCEID(org.apache.xml.security.utils.EncryptionConstants.ALGO_ID_BLOCKCIPHER_AES128);

    if (algorithmId != null) {
        try {
            if (Cipher.getInstance(algorithmId) != null)
                haveISOPadding = true;
        } catch (NoSuchAlgorithmException nsae) {
        } catch (NoSuchPaddingException nspe) {
        }
    }

}

---

From source file:br.com.vizzatech.cryptocipher.CryptoXCipher.java

/**
 * Gera chave e os parametros para um determinado algoritmo.
 * //w w w  .j  a  v  a  2 s  . c  om
 * @param algoritmo
 * @param sal
 * @return {@link SecretKey}
 * @throws NoSuchAlgorithmException
 *             Algorismo no existente
 * @throws InvalidKeySpecException
 * @throws InvalidParameterSpecException
 */
private SecretKey getKey(String algoritmo, String sal)
        throws InvalidKeySpecException, NoSuchAlgorithmException, InvalidParameterSpecException {
    KeySpec keySpec;
    if (algoritmo.indexOf("PBE") != -1) {
        byte[] salt = { (byte) 0xA9, (byte) 0x9B, (byte) 0xC8, (byte) 0x32, (byte) 0x56, (byte) 0x34,
                (byte) 0xE3, (byte) 0x03 };
        int iteracoes = 16;
        keySpec = new PBEKeySpec(sal.toCharArray(), salt, iteracoes);
        paramSpec = new PBEParameterSpec(salt, iteracoes);
        return SecretKeyFactory.getInstance(algoritmo).generateSecret(keySpec);
    }
    keySpec = new SecretKeySpec(sal.getBytes(charset), algoritmo);
    return (SecretKey) keySpec;
}

---

From source file:com.networknt.light.util.HashUtil.java

public static String generateStorngPasswordHash(String password)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    int iterations = 1000;
    char[] chars = password.toCharArray();
    byte[] salt = getSalt().getBytes();

    PBEKeySpec spec = new PBEKeySpec(chars, salt, iterations, 64 * 8);
    SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    byte[] hash = skf.generateSecret(spec).getEncoded();
    return iterations + ":" + toHex(salt) + ":" + toHex(hash);
}

---

From source file:com.glaf.core.security.SecurityUtils.java

/**
 * DES/* w  w  w.j av  a  2s.co  m*/
 * 
 * @param data
 *            
 * @param key
 *            ???8?
 * @return ?
 */
public static String encode(String key, String data) {
    if (data == null) {
        return null;
    }
    try {
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        // key??8?
        Key secretKey = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance(ALGORITHM_DES);
        IvParameterSpec iv = new IvParameterSpec("12345678".getBytes());
        AlgorithmParameterSpec paramSpec = iv;
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, paramSpec);
        byte[] bytes = cipher.doFinal(data.getBytes());
        return byte2hex(bytes);
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}

---

From source file:com.cyberninjas.xerobillableexpenses.util.Settings.java

public Settings() {
    try {//from   w ww .  ja va  2s . com
        String parentClass = new Exception().getStackTrace()[1].getClassName();
        this.prefs = Preferences.userNodeForPackage(Class.forName(parentClass));
        Random r = new SecureRandom();

        //Set IV
        this.iv = prefs.getByteArray("DRUGS", null);

        //Pick Random PWD
        byte[] b = new byte[128];
        r.nextBytes(b);
        MessageDigest sha = MessageDigest.getInstance("SHA-1");
        sha.update(b);
        String sHash = new String(Base64.encodeBase64(sha.digest()));

        String password = prefs.get("LAYOUT", sHash);
        if (password.equals(sHash))
            prefs.put("LAYOUT", sHash);

        //Keep 'em Guessing
        r.nextBytes(b);
        sha.update(b);
        prefs.put("PASSWORD", new String(Base64.encodeBase64(sha.digest())));

        //Set Random Salt
        byte[] tSalt = new byte[8];
        r.nextBytes(tSalt);
        byte[] salt = prefs.getByteArray("HIMALAYAN", tSalt);
        if (Arrays.equals(salt, tSalt))
            prefs.putByteArray("HIMALAYAN", salt);

        /* Derive the key, given password and salt. */
        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        KeySpec spec = new PBEKeySpec(password.toCharArray(), salt, 65536, 128);
        SecretKey tmp = factory.generateSecret(spec);
        this.secret = new SecretKeySpec(tmp.getEncoded(), "AES");

        cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(RSAx509CertGen.class.getName()).log(Level.SEVERE, null, ex);
    } catch (InvalidKeySpecException ex) {
        Logger.getLogger(RSAx509CertGen.class.getName()).log(Level.SEVERE, null, ex);
    } catch (Exception ex) {
        Logger.getLogger(RSAx509CertGen.class.getName()).log(Level.SEVERE, null, ex);
    }

}

---

From source file:com.aqnote.shared.cryptology.symmetric.DES.java

private static void generateCipher(String rawKey) {
    try {//w  w  w . ja  va  2 s. co m
        DESKeySpec dks = new DESKeySpec(rawKey.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
        SecretKey deskey = keyFactory.generateSecret(dks);
        encodeCipher = Cipher.getInstance(ALGORITHM);
        encodeCipher.init(Cipher.ENCRYPT_MODE, deskey);
        decodeCipher = Cipher.getInstance(ALGORITHM);
        decodeCipher.init(Cipher.DECRYPT_MODE, deskey);
    } catch (InvalidKeyException e) {
        throw new RuntimeException(e);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    } catch (InvalidKeySpecException e) {
        throw new RuntimeException(e);
    } catch (NoSuchPaddingException e) {
        throw new RuntimeException(e);
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• »