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.wms.studio.security.utils.Digests.java

public static byte[] desEncrypt(String pwd, byte[] key) throws Exception {
    // ?DESKeySpec
    DESKeySpec dks = new DESKeySpec(key);
    // ?DESKeySpec??SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher??//  ww w. ja  v  a2s .co m
    Cipher cipher = Cipher.getInstance(DES);
    // ?Cipher
    cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
    return cipher.doFinal(pwd.getBytes());
}

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From source file:com.greenline.hrs.admin.util.encrypt.DESUtil.java

/**
 * Description ?/*  w  w w  .  j ava2 s .  com*/
 *
 * @param data
 * @param key  byte
 * @return
 * @throws Exception
 */
private static byte[] encrypt(byte[] data, byte[] key) throws GeneralSecurityException {
    // ????
    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(data);

}

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

/**
 * /*from  w w w  .ja va 2s . co  m*/
 * @param src   ??
 * @param key   8?
 * @return      ??
 * @throws Exception
 */
public static byte[] decrypt(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.DECRYPT_MODE, securekey, sr);
    // ??
    // ??
    return cipher.doFinal(src);
}

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From source file:com.example.license.DESUtil.java

public static String encryptBase64(String data, String key) throws Exception {

    DESKeySpec desKey = new DESKeySpec(key.getBytes());
    // ?DESKeySpec??
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
    SecretKey securekey = keyFactory.generateSecret(desKey);

    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, securekey);

    byte[] results = cipher.doFinal(data.getBytes("UTF-8"));
    // Encrypt//from  w w  w.  j  a v  a2s. c o  m
    // byte[] unencryptedByteArray = data.getBytes("UTF8");
    // byte[] encryptedBytes = encryptCipher.doFinal(unencryptedByteArray);

    // Encode bytes to base64 to get a string
    byte[] encodedBytes = Base64.encodeBase64(results);
    return new String(encodedBytes);
}

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From source file:club.jmint.crossing.specs.Security.java

public static String desDecrypt(String data, String key) throws CrossException {
    String ret = null;//from  w  ww  .j  a v a  2  s .  c  o m
    try {
        DESKeySpec desKey = new DESKeySpec(key.getBytes("UTF-8"));
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey securekey = keyFactory.generateSecret(desKey);

        Cipher cipher = Cipher.getInstance(CIPHER_DES_ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, securekey);

        ret = new String(cipher.doFinal(Base64.decodeBase64(data)));
    } catch (Exception e) {
        CrossLog.printStackTrace(e);
        throw new CrossException(ErrorCode.COMMON_ERR_DECRYPTION.getCode(),
                ErrorCode.COMMON_ERR_DECRYPTION.getInfo());
    }
    return ret;
}

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

/**
 *   ?.//from   w ww  . j  a v  a2 s . com
 * @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;
    }
}

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

/**
 * DES/*from w w w .ja  v a2  s. c  om*/
 * 
 * @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);
    }
}

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From source file:it.scoppelletti.programmerpower.security.spi.DESKeyFactory.java

@Override
protected KeySpec getKeySpec(String alg, KeyRep.Type keyType, Properties props, String prefix) {
    String name, value;/*w ww  . jav  a 2 s  .c  o m*/
    byte[] key;
    KeySpec keySpec;

    name = Strings.concat(prefix, DESKeyFactory.PROP_KEY);
    value = props.getProperty(name);
    if (Strings.isNullOrEmpty(value)) {
        throw new ArgumentNullException(name);
    }

    try {
        key = Hex.decodeHex(value.toCharArray());
    } catch (DecoderException ex) {
        throw SecurityUtils.toSecurityException(ex);
    }

    try {
        keySpec = new DESKeySpec(key);
    } catch (InvalidKeyException ex) {
        throw SecurityUtils.toSecurityException(ex);
    }

    return keySpec;
}

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

private static void generateCipher(String rawKey) {
    try {/*  w w w  . j  a va  2  s .c om*/
        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);
    }
}

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From source file:com.wms.studio.security.utils.Digests.java

public static byte[] desDecrypt(byte[] pwd, byte[] key) throws Exception {
    // ?DESKeySpec
    DESKeySpec dks = new DESKeySpec(key);
    // ?DESKeySpec??SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher??//from w w  w  .ja  v a2s .c  o  m
    Cipher cipher = Cipher.getInstance(DES);
    // ?Cipher
    cipher.init(Cipher.DECRYPT_MODE, securekey, random);
    return cipher.doFinal(pwd);
}

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