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 encrypt(String Text) {
    try {//from w  ww .j  ava  2  s . c  o  m
        DESKeySpec keySpec = new DESKeySpec("schluessel_stdrepository15".getBytes("UTF8"));
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(keySpec);

        // ENCODE plainTextPassword String
        byte[] cleartext = Text.getBytes("UTF8");
        Cipher cipher = Cipher.getInstance("DES");
        // cipher is not thread safe
        cipher.init(Cipher.ENCRYPT_MODE, key);
        return Base64.encodeBase64URLSafeString(cipher.doFinal(cleartext));

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

    return "";
}

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From source file:com.java.demo.DesDemo.java

public static void Init() {
    try {/*from w w w.  j  a va 2s  .  co  m*/
        KeyGenerator keyGenerator = KeyGenerator.getInstance("DES");
        keyGenerator.init(56);
        SecretKey secretKey = keyGenerator.generateKey();
        byte[] bytesKey = secretKey.getEncoded();

        DESKeySpec dESKeySpec = new DESKeySpec(bytesKey);
        SecretKeyFactory factory = SecretKeyFactory.getInstance("DES");
        convertSecretKey = factory.generateSecret(dESKeySpec);

    } catch (Exception e) {
    }
}

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

/**
 * /*www  .  j  a  v  a  2s.c  om*/
 * ?key
 * 
 * @param KeyStr
 *            
 * @return 
 * @throws InvalidKeyException
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeySpecException
 * @throws Exception
 */
private static SecretKey keyGenerator(String keyStr) throws Exception {
    byte input[] = HexString2Bytes(keyStr);
    DESKeySpec desKey = new DESKeySpec(input);
    // ?DESKeySpec??
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
    SecretKey securekey = keyFactory.generateSecret(desKey);
    return securekey;
}

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From source file:Encrypt.java

private static String encrypt(String message) throws Exception {
    Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
    DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
    IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
    cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
    return toHexString(cipher.doFinal(message.getBytes("UTF-8")));
}

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From source file:Main.java

public static Key getDESKey(byte[] key)
        throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException {
    DESKeySpec des = new DESKeySpec(key);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM_DES);
    return keyFactory.generateSecret(des);
}

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From source file:org.talend.commons.utils.PasswordEncryptUtil.java

private static SecretKey getSecretKey() throws Exception {
    if (key == null) {

        byte rawKeyData[] = rawKey.getBytes();
        DESKeySpec dks = new DESKeySpec(rawKeyData);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); //$NON-NLS-1$
        key = keyFactory.generateSecret(dks);
    }//from   w w w. j a v a  2 s  .c  o m
    return key;
}

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From source file:de.uzk.hki.da.passwordEncryptor.passwordEncryptor.java

private static String encryptPasswordForContentBroker(String password) {

    byte key[] = "394z57f4".getBytes();
    byte encryptedPassword[];

    try {/*from  w  w  w .  j  av  a2 s  .c  o  m*/
        SecretKey secretKey = SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(key));

        Cipher encrypt = Cipher.getInstance("DES/CBC/PKCS5Padding");
        encrypt.init(Cipher.ENCRYPT_MODE, secretKey,
                new IvParameterSpec(new byte[] { 0x01, 0x02, 0x04, 0x10, 0x01, 0x02, 0x04, 0x10 }));
        encryptedPassword = encrypt.doFinal(password.getBytes());
    } catch (GeneralSecurityException e) {
        throw new RuntimeException("Couldn't encrypt password " + password + e);
    }

    return new String(Base64.encodeBase64(encryptedPassword));
}

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From source file:de.uzk.hki.da.utils.PasswordUtils.java

public static String decryptPassword(String password) {

    byte key[] = "394z57f4".getBytes();
    byte decryptedPassword[];

    try {/*from w  w w  .  jav a 2s . c o  m*/
        SecretKey secretKey = SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(key));
        Cipher decrypt = Cipher.getInstance("DES/CBC/PKCS5Padding");
        decrypt.init(Cipher.DECRYPT_MODE, secretKey,
                new IvParameterSpec(new byte[] { 0x01, 0x02, 0x04, 0x10, 0x01, 0x02, 0x04, 0x10 }));
        decryptedPassword = decrypt.doFinal(Base64.decodeBase64(password.getBytes()));

    } catch (GeneralSecurityException e) {
        throw new RuntimeException("Couldn't decrypt password " + password + e);
    }

    return new String(decryptedPassword);
}

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From source file:org.beangle.security.codec.DESEncrypt.java

public byte[] doEncrypt(byte plainText[]) throws Exception {
    SecureRandom sr = new SecureRandom();
    byte rawKeyData[] = desKey;
    DESKeySpec dks = new DESKeySpec(rawKeyData);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    javax.crypto.SecretKey key = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance("DES");
    cipher.init(1, key, sr);/*  ww w.  ja va2s . c  om*/
    byte data[] = plainText;
    byte encryptedData[] = cipher.doFinal(data);
    return encryptedData;
}

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From source file:Main.java

private static byte[] doFinal(String key, int opmode, byte[] input)
        throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        IllegalBlockSizeException, BadPaddingException {
    key = checkNull(key) ? DEFAULT_KEY : key;
    if (checkNull(key)) {
        return null;
    }//  ww w.  j  a v a 2s.c o m
    SecureRandom sr = new SecureRandom();
    DESKeySpec dks = new DESKeySpec(key.getBytes());
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance(MODE);
    cipher.init(opmode, securekey, sr);
    return cipher.doFinal(input);
}

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