Example usage for javax.crypto.spec DESKeySpec DESKeySpec

Introduction

In this page you can find the example usage for javax.crypto.spec DESKeySpec DESKeySpec.

Prototype

public DESKeySpec(byte[] key) throws InvalidKeyException 

Source Link

Document

Creates a DESKeySpec object using the first 8 bytes in key as the key material for the DES key.

Usage

From source file:com.fengduo.bee.commons.security.EncryptBuilder.java

@SuppressWarnings("restriction")
private byte[] doCrypt(String source, String secretKey, ICrypt iCrypt)
        throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        IllegalBlockSizeException, BadPaddingException {
    byte[] cryptedData = iCrypt.getCryptedData(source);
    Security.addProvider(new com.sun.crypto.provider.SunJCE());
    SecureRandom sr = new SecureRandom();
    byte[] rawKeyData = (new String(secretKey)).getBytes();

    DESKeySpec dks = new DESKeySpec(rawKeyData);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey key = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance("DES");
    iCrypt.initCipher(key, sr, cipher);//from w  ww. j ava2s .  c  o  m

    return cipher.doFinal(cryptedData);
}

---

From source file:org.xdi.util.security.StringEncrypter.java

/**
 * Constructor specifying scheme and key
 * /*from   ww w .j  a v  a2  s.  c om*/
 * @param encryptionScheme
 *            Encryption scheme to use
 * @param encryptionKey
 *            Encryption key to use
 * @throws EncryptionException
 */
public StringEncrypter(final String encryptionScheme, final String encryptionKey) throws EncryptionException {
    if (encryptionKey == null) {
        throw new IllegalArgumentException("encryption key was null");
    }
    if (encryptionKey.trim().length() < 24) {
        throw new IllegalArgumentException("encryption key was less than 24 characters");
    }

    try {
        final byte[] keyAsBytes = encryptionKey.getBytes(StringEncrypter.UNICODE_FORMAT);

        if (encryptionScheme.equalsIgnoreCase(StringEncrypter.DESEDE_ENCRYPTION_SCHEME)) {
            keySpec = new DESedeKeySpec(keyAsBytes);
        } else if (encryptionScheme.equalsIgnoreCase(StringEncrypter.DES_ENCRYPTION_SCHEME)) {
            keySpec = new DESKeySpec(keyAsBytes);
        } else {
            throw new IllegalArgumentException("Encryption scheme not supported: " + encryptionScheme);
        }

        keyFactory = SecretKeyFactory.getInstance(encryptionScheme);
        cipher = Cipher.getInstance(encryptionScheme);
    } catch (final InvalidKeyException e) {
        throw new EncryptionException(e);
    } catch (final UnsupportedEncodingException e) {
        throw new EncryptionException(e);
    } catch (final NoSuchAlgorithmException e) {
        throw new EncryptionException(e);
    } catch (final NoSuchPaddingException e) {
        throw new EncryptionException(e);
    }
}

---

From source file:com.cherong.mock.common.base.util.EncryptionUtil.java

/**
 * DES bytKey8?/* ww  w . java 2  s  .  c o  m*/
 * 
 * @param bytP
 * @param bytKey
 * @return
 * @throws Exception
 */
public static byte[] encryptByDES(byte[] bytP, byte[] bytKey) throws Exception {
    DESKeySpec dks = new DESKeySpec(bytKey);
    SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
    SecretKey sk = skf.generateSecret(dks);
    Cipher cip = Cipher.getInstance(DES_CIPHER_ALGORITHM);
    cip.init(Cipher.ENCRYPT_MODE, sk);
    return cip.doFinal(bytP);
}

---

From source file:org.jamwiki.utils.Encryption.java

/**
 * Create the encryption key value.//from  w  ww .  j a va 2 s  .  c om
 * 
 * @return An encryption key value implementing the DES encryption algorithm.
 */
private static SecretKey createKey() throws GeneralSecurityException, UnsupportedEncodingException {
    byte[] bytes = ENCRYPTION_KEY.getBytes("UTF8");
    DESKeySpec spec = new DESKeySpec(bytes);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES_ALGORITHM);
    return keyFactory.generateSecret(spec);
}

---

From source file:jef.tools.security.EncrypterUtil.java

/**
 * ??DESKey//  w w  w .j  a  va2  s.  c o  m
 * 
 * @param password
 * @return
 */
public static final SecretKey toDESKey(String password) {
    byte[] bb = password.getBytes();
    Assert.isTrue(bb.length > 7, "the secretKey for DES must be 8 bytes at least.");
    try {
        KeySpec keySpec = new DESKeySpec(bb);
        SecretKey key = SecretKeyFactory.getInstance("DES").generateSecret(keySpec);
        return key;
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e.getMessage());
    }
}

---

From source file:com.cherong.mock.common.base.util.EncryptionUtil.java

/**
 * DES bytKey8?/*from  w  w w .  ja v  a2s.c  o  m*/
 * 
 * @param bytE
 * @param bytKey
 * @return
 * @throws Exception
 */
public static byte[] decryptByDES(byte[] bytE, byte[] bytKey) throws Exception {
    DESKeySpec desKS = new DESKeySpec(bytKey);
    SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
    SecretKey sk = skf.generateSecret(desKS);
    Cipher cip = Cipher.getInstance(DES_CIPHER_ALGORITHM);
    cip.init(Cipher.DECRYPT_MODE, sk);
    return cip.doFinal(bytE);
}

---

From source file:eap.util.EDcodeUtil.java

private static byte[] des(byte[] data, byte[] key, int opMode) {
    try {//from  www.  j a v  a  2 s.  c  o m
        DESKeySpec desKey = new DESKeySpec(key);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES", provider);
        SecretKey secureKey = keyFactory.generateSecret(desKey);

        Cipher cipher = Cipher.getInstance("DES", provider);
        //         SecureRandom secureRandom = new SecureRandom();
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG"); // provider
        cipher.init(opMode, secureKey, secureRandom);

        return cipher.doFinal(data);
    } catch (Exception e) {
        throw new IllegalArgumentException(e.getMessage(), e);
    }
}

---

From source file:org.kuali.rice.core.impl.encryption.DemonstrationGradeEncryptionServiceImpl.java

private SecretKey unwrapEncodedKey(String key) throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();

    // Create the cipher
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init((Cipher.UNWRAP_MODE), desKey);

    byte[] bytes = Base64.decodeBase64(key.getBytes());

    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec keyspec = new DESKeySpec(bytes);
    SecretKey k = desFactory.generateSecret(keyspec);

    return k;/*w  w w. j  a v a 2s  .  c  om*/

}

---

From source file:com.mastercard.mcbp.utils.crypto.CryptoServiceImpl.java

/**
 * {@inheritDoc}/*w  w  w  .j av  a2 s  .  c om*/
 */
@Override
public final byte[] desCbc(byte[] data, byte[] bKey, Mode mode) throws McbpCryptoException {
    try {
        SecretKey key = SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(bKey));
        final Cipher cipher = Cipher.getInstance("DES/CBC/noPadding");

        final IvParameterSpec ips = new IvParameterSpec(new byte[8]);
        if (mode == Mode.ENCRYPT) {
            cipher.init(Cipher.ENCRYPT_MODE, key, ips);
        } else {
            cipher.init(Cipher.DECRYPT_MODE, key, ips);
        }
        return cipher.doFinal(data);
    } catch (InvalidKeySpecException | NoSuchAlgorithmException | InvalidKeyException
            | IllegalBlockSizeException | BadPaddingException | InvalidAlgorithmParameterException
            | NoSuchPaddingException e) {
        throw new McbpCryptoException(e.toString());
    }
}

---

From source file:com.yaxin.utils.StringUtils.java

/**
 * /*from  ww w  . j  a  v  a2s.  c  o m*/
 * @param src 
 * @param key 8
 * @return     
 * @throws Exception
 */
public static byte[] encrypt(byte[] src, byte[] key) throws Exception {
    //      DES
    SecureRandom sr = new SecureRandom();
    // DESKeySpec
    DESKeySpec dks = new DESKeySpec(key);
    // DESKeySpec
    // SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher
    Cipher cipher = Cipher.getInstance(DES);
    // Cipher
    cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
    // 
    // 
    return cipher.doFinal(src);
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• »