Example usage for javax.crypto.spec DESKeySpec getKey

Introduction

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

Prototype

public byte[] getKey() 

Source Link

Document

Returns the DES key material.

Usage

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    KeyGenerator kg = KeyGenerator.getInstance("DES");
    kg.init(new SecureRandom());
    SecretKey key = kg.generateKey();
    SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
    Class spec = Class.forName("javax.crypto.spec.DESKeySpec");
    DESKeySpec ks = (DESKeySpec) skf.getKeySpec(key, spec);
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("keyfile"));
    oos.writeObject(ks.getKey());

    Cipher c = Cipher.getInstance("DES/CFB8/NoPadding");
    c.init(Cipher.ENCRYPT_MODE, key);
    CipherOutputStream cos = new CipherOutputStream(new FileOutputStream("ciphertext"), c);
    PrintWriter pw = new PrintWriter(new OutputStreamWriter(cos));
    pw.println("Stand and unfold yourself");
    pw.close();/*  w w w .j  a  v  a  2 s. c o  m*/
    oos.writeObject(c.getIV());
    oos.close();
}

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From source file:MainClass.java

public static void main(String args[]) throws Exception {

    KeyGenerator keyGen = KeyGenerator.getInstance("DES");
    SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
    random.setSeed(101L);/*from w w  w. j a  v  a  2 s  .  c om*/
    keyGen.init(56, random);
    SecretKey sKey = keyGen.generateKey();
    SecretKeyFactory kfactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec kspec = (DESKeySpec) kfactory.getKeySpec(sKey, DESKeySpec.class);

    System.out.println(sKey);
    FileOutputStream fos = new FileOutputStream("secretKeys");
    ObjectOutputStream oos = new ObjectOutputStream(fos);

    oos.writeObject(kspec.getKey());

    FileInputStream fin = new FileInputStream("secretKeys");
    ObjectInputStream ois = new ObjectInputStream(fin);

    byte[] kMaterial = (byte[]) ois.readObject();

    DESKeySpec keyspec = new DESKeySpec(kMaterial);
    SecretKey newKey = kfactory.generateSecret(keyspec);
    System.out.println(newKey);
    System.out.println("Do the keys equal :" + newKey.equals(sKey));

}

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From source file:it.scoppelletti.security.keygen.DESKeyToPropertySetProvider.java

public Properties toProperties(Key key) {
    byte[] data;/*from ww  w . j  a v a 2s  .  c o m*/
    SecretKey desKey;
    SecretKeyFactory keyFactory;
    DESKeySpec param;
    Properties props;

    if (!(key instanceof SecretKey)) {
        return null;
    }

    try {
        keyFactory = SecretKeyFactory.getInstance(DESKeyFactory.ALGORITHM);
    } catch (NoSuchAlgorithmException ex) {
        return null;
    }

    try {
        desKey = keyFactory.translateKey((SecretKey) key);
    } catch (InvalidKeyException ex) {
        return null;
    }

    try {
        param = (DESKeySpec) keyFactory.getKeySpec(desKey, DESKeySpec.class);
    } catch (InvalidKeySpecException ex) {
        return null;
    }

    props = new Properties();
    props.setProperty(CryptoUtils.PROP_KEYFACTORY, DESKeyFactory.class.getName());
    data = param.getKey();
    props.setProperty(DESKeyFactory.PROP_KEY, Hex.encodeHexString(data));
    Arrays.fill(data, Byte.MIN_VALUE);

    return props;
}

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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");
    }/* www. j  a  va  2s  .c om*/

    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:org.kuali.rice.core.impl.encryption.DemonstrationGradeEncryptionServiceImpl.java

/**
 * /*w  w w . j a v a  2s . c om*/
 * This method generates keys. This method is implementation specific and should not be present in any general purpose interface
 * extracted from this class.
 * 
 * @return
 * @throws Exception
 */
public static String generateEncodedKey() throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();

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

    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");
    DESKeySpec desSpec = (DESKeySpec) desFactory.getKeySpec(desKey, javax.crypto.spec.DESKeySpec.class);
    byte[] rawDesKey = desSpec.getKey();

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

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

private String generateDESKey() throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();
    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");
    DESKeySpec desSpec = (DESKeySpec) desFactory.getKeySpec(desKey, javax.crypto.spec.DESKeySpec.class);
    byte[] rawDesKey = desSpec.getKey();
    return new String(Base64.encodeBase64(rawDesKey));
}

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