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:de.fhdo.helper.DES.java

public static String decrypt(String Text) {
    try {//from  w  ww  .ja  v  a 2 s .c  om
        DESKeySpec keySpec = new DESKeySpec("schluessel_stdrepository15".getBytes("UTF8"));
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(keySpec);

        byte[] encrypedPwdBytes = Base64.decodeBase64(Text);
        Cipher cipher = Cipher.getInstance("DES");// cipher is not thread safe
        cipher.init(Cipher.DECRYPT_MODE, key);

        byte[] plainTextPwdBytes = (cipher.doFinal(encrypedPwdBytes));

        return new String(plainTextPwdBytes);

    } catch (Exception e) {
        e.printStackTrace();
    }

    return "";
}

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From source file:com.intera.roostrap.util.EncryptionUtil.java

private static void encryptOrDecrypt(String encryptionKey, int mode, InputStream is, OutputStream os)
        throws InvalidKeyException, IOException {
    DESKeySpec keySpec = new DESKeySpec(toBytes(encryptionKey));

    SecretKey key = null;/*from   www .ja v  a  2 s . co  m*/
    Cipher cipher = null;
    try {
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DES");
        key = secretKeyFactory.generateSecret(keySpec);
        cipher = Cipher.getInstance("DES");

    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    if (mode == Cipher.ENCRYPT_MODE) {
        cipher.init(Cipher.ENCRYPT_MODE, key);
        CipherInputStream cis = new CipherInputStream(is, cipher);
        doCopy(cis, os);
    } else if (mode == Cipher.DECRYPT_MODE) {
        cipher.init(Cipher.DECRYPT_MODE, key);
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        doCopy(is, cos);
    }
}

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From source file:com.ikon.util.SecureStore.java

/**
 * DES encoder//from w w w.ja va 2 s  .c om
 */
public static byte[] desEncode(String key, byte[] src)
        throws InvalidKeyException, UnsupportedEncodingException, NoSuchAlgorithmException,
        InvalidKeySpecException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {
    DESKeySpec keySpec = new DESKeySpec(key.getBytes("UTF8"));
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey sKey = keyFactory.generateSecret(keySpec);

    Cipher cipher = Cipher.getInstance("DES"); // cipher is not thread safe
    cipher.init(Cipher.ENCRYPT_MODE, sKey);
    byte[] dst = cipher.doFinal(src);

    return dst;
}

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From source file:org.underworldlabs.util.DesEncrypter.java

public static SecretKey getSecretKey(String key) throws Exception {
    byte[] keyAsBytes = key.getBytes("UTF8");
    KeySpec keySpec = new DESKeySpec(keyAsBytes);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    return keyFactory.generateSecret(keySpec);
}

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From source file:com.soctec.soctec.utils.Encryptor.java

/**
 * Constructs the encryptor.// w  ww.  j  av  a  2 s.c  o  m
 * Creates the needed keys and cipher for encryption.
 *
 */
public Encryptor() {

    try {
        keySpec = new DESKeySpec(keyString.getBytes("UTF8"));
        keyFactory = SecretKeyFactory.getInstance("DES");
        key = keyFactory.generateSecret(keySpec);

        ecipher = Cipher.getInstance("DES");
        decipher = Cipher.getInstance("DES");
        ecipher.init(Cipher.ENCRYPT_MODE, key);
        decipher.init(Cipher.DECRYPT_MODE, key);

    } catch (InvalidKeyException | UnsupportedEncodingException | NoSuchAlgorithmException
            | InvalidKeySpecException | NoSuchPaddingException e) {
        e.printStackTrace();
    }
}

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From source file:com.creditcloud.common.security.impl.DESTextCipher.java

@Override
public void init(String salt) {
    try {//from w w  w  .  ja  v a2s  .  c  o m
        SecretKey sk = keyFactory.generateSecret(new DESKeySpec(salt.getBytes()));
        encryptCipher.init(Cipher.ENCRYPT_MODE, sk);
        decryptCipher.init(Cipher.DECRYPT_MODE, sk);
    } catch (InvalidKeyException | InvalidKeySpecException ex) {
        logger.error("Can't init Cipher.[salt={}]", salt, ex);
    }
}

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From source file:net.sf.hajdbc.codec.crypto.CipherCodecTest.java

@Before
public void before() throws Exception {
    SecretKeyFactory factory = SecretKeyFactory.getInstance(ALGORITHM);
    Key key = factory.generateSecret(new DESKeySpec(Base64.decodeBase64(KEY.getBytes())));

    this.codec = new CipherCodec(key);
}

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From source file:org.duracloud.common.util.EncryptionUtil.java

public EncryptionUtil(String key) throws DuraCloudRuntimeException {
    if (key == null) {
        throw new IllegalArgumentException("'key' parameter must be non-null");
    }/*from   w  w  w. jav  a 2s .c o m*/

    int keySize = DEFAULT_KEY.length();
    if (key.length() > keySize) {
        key = key.substring(0, keySize);
    }

    key = StringUtils.leftPad(key, keySize);

    this.keyBytes = key.getBytes();
    try {
        // Create cipher
        this.cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");

        // Create Key
        DESKeySpec deskey = new DESKeySpec(this.keyBytes);
        this.key = new SecretKeySpec(deskey.getKey(), "DES");
    } catch (Exception e) {
        throw new DuraCloudRuntimeException(e);
    }
}

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From source file:Crypt.java

private Crypt() {
    DESKeySpec dk;/*from   w ww.j  av a  2s  .  com*/
    try {
        dk = new DESKeySpec(new Long(serialVersionUID).toString().getBytes());
        SecretKeyFactory kf = SecretKeyFactory.getInstance("DES");
        secretKey = kf.generateSecret(dk);
    } catch (Exception e) {
        log.error("", e);
    }
}

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From source file:com.liusoft.dlog4j.upgrade.StringUtils.java

/**
 * //from w  ww  .j  a  va 2s.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);
}

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