Example usage for javax.crypto.spec DESedeKeySpec DESedeKeySpec

Introduction

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

Prototype

public DESedeKeySpec(byte[] key) throws InvalidKeyException 

Source Link

Document

Creates a DESedeKeySpec object using the first 24 bytes in key as the key material for the DES-EDE key.

Usage

From source file:com.servoy.j2db.util.SecuritySupport.java

public static Key getCryptKey(Settings settings) throws Exception {
    initKeyStoreAndPassphrase(settings);

    Enumeration e = keyStore.aliases();
    while (e.hasMoreElements()) {
        String alias = (String) e.nextElement();
        if (keyStore.isKeyEntry(alias)) {
            return new SecretKeySpec(
                    new DESedeKeySpec(keyStore.getKey(alias, passphrase).getEncoded()).getKey(), "DESede");
        }/*www. j  a  v a 2 s  . co  m*/
    }
    return null;
}

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

/**
 *   ?./*from  w  ww .  ja  v a  2  s  .c  o  m*/
 * @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.waveerp.desEncryption.java

public void Encrypter(String keyString, String ivString) {
    try {/*from w  w w  .  java2  s. com*/

        keyString = "J3SuSChRiSt";
        ivString = "Pr0V3rBs";

        final MessageDigest msgDigest = MessageDigest.getInstance("md5");
        final byte[] digestOfPassword = msgDigest.digest(Base64.decodeBase64(keyString.getBytes("utf-8")));
        final byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        for (int j = 0, k = 16; j < 8;) {
            keyBytes[k++] = keyBytes[j++];
        }

        kSpec = new DESedeKeySpec(keyBytes);

        sKey = SecretKeyFactory.getInstance("DESede").generateSecret(kSpec);

        ivParSpec = new IvParameterSpec(ivString.getBytes());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:TripleDES.java

/** Read a TripleDES secret key from the specified file */
public static SecretKey readKey(File f)
        throws IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidKeySpecException {
    // Read the raw bytes from the keyfile
    DataInputStream in = new DataInputStream(new FileInputStream(f));
    byte[] rawkey = new byte[(int) f.length()];
    in.readFully(rawkey);/* w  w w .  j a  v a 2  s  . c o m*/
    in.close();

    // Convert the raw bytes to a secret key like this
    DESedeKeySpec keyspec = new DESedeKeySpec(rawkey);
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("DESede");
    SecretKey key = keyfactory.generateSecret(keyspec);
    return key;
}

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From source file:com.anteam.demo.codec.cipher.symmetric.DESTest.java

License:asdf

public byte[] testDESedeEn(String plainText) {
    try {// ww  w. j  a  v a  2  s. c om
        // Create an array to hold the key
        byte[] encryptKey = "This is a test DESede key".getBytes();

        // Create a DESede key spec from the key
        DESedeKeySpec spec = new DESedeKeySpec(encryptKey);

        // Get the secret key factor for generating DESede keys
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");

        // Generate a DESede SecretKey object
        SecretKey theKey = keyFactory.generateSecret(spec);

        // Create a DESede Cipher
        Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");

        // Create an initialization vector (necessary for CBC mode)

        IvParameterSpec IvParameters = new IvParameterSpec(
                new byte[] { 0x01, 0x02, 0x03, 0x04, 0x0F, 0x0E, 0x0D, 0x0C });

        // Initialize the cipher and put it into encrypt mode
        cipher.init(Cipher.ENCRYPT_MODE, theKey, IvParameters);
        return cipher.doFinal(plainText.getBytes());

    } catch (Exception exc) {
        exc.printStackTrace();
    }
    return null;
}

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From source file:com.vmware.o11n.plugin.crypto.service.CryptoEncryptionService.java

/**
 * TripleDES (EDE) Encryption CBC Mode with PKCS5 padding
 *
 * @param dataB64 Data to encrypt Base64 encoded.
 * @param secretB64 Encryption secret Base64 encoded. Secret must be at least 24 bytes. Only the first 24 bytes will be used.
 * @param ivB64 Initialization Vector Base64 encoded. Only first 8 bytes will be used.
 * @return Encrypted data Base64 encoded.
 * @throws NoSuchAlgorithmException/*from   ww w  . j ava  2 s .  co  m*/
 * @throws NoSuchPaddingException
 * @throws InvalidKeyException
 * @throws InvalidAlgorithmParameterException
 * @throws IOException
 * @throws BadPaddingException
 * @throws IllegalBlockSizeException
 */
public String tripleDesEncrypt(String dataB64, String secretB64, String ivB64)
        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
        InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
    String encryptedB64 = null;

    final byte[] dataBytes = Base64.decodeBase64(dataB64);
    final byte[] secretBytes = Base64.decodeBase64(secretB64);
    final byte[] ivBytes = Base64.decodeBase64(ivB64);
    final Cipher cipher = Cipher.getInstance(DESEDE_CIPHER);

    DESedeKeySpec keySpec = new DESedeKeySpec(secretBytes);
    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keySpec.getKey(), "DESede"),
            new IvParameterSpec(ivBytes, 0, cipher.getBlockSize()));

    encryptedB64 = Base64.encodeBase64String(cipher.doFinal(dataBytes));
    return encryptedB64;
}

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From source file:com.hernandez.rey.crypto.TripleDES.java

/**
 * Read a TripleDES secret key from the specified file
 * //from  w  w w  .  j  a  v  a2s  .c  o  m
 * @param keyFile key file to read
 * @return secret key appropriate for encryption/decryption with 3DES
 * @throws IOException
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeyException
 * @throws InvalidKeySpecException
 */
public static SecretKey readKey(final File keyFile)
        throws IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidKeySpecException {
    // Read the raw bytes from the keyfile
    final DataInputStream in = new DataInputStream(new FileInputStream(keyFile));
    final byte[] rawkey = new byte[(int) keyFile.length()];
    in.readFully(rawkey);
    in.close();

    // Convert the raw bytes to a secret key like this
    final DESedeKeySpec keyspec = new DESedeKeySpec(rawkey);
    final SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("DESede");
    final SecretKey key = keyfactory.generateSecret(keyspec);
    return key;
}

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From source file:atg.projects.store.crypto.DESedeEncryptor.java

/**
 * Initialize DESedeEncryptor.//from  www . ja v  a 2 s.co m
 *
 * @throws EncryptorException This exception indicates that a severe error
 * occurred while performing a cryptography operation.
 */
protected final void doInit() throws EncryptorException {
    try {
        addSecurityProviders();

        if (mKeyString == null) {
            mKeyString = KEY.getBytes();
        }

        mKeySpec = new DESedeKeySpec(mKeyString);
        mKey = new SecretKeySpec(mKeySpec.getKey(), ALGORITHM);
        mEncryptCypher = javax.crypto.Cipher.getInstance(ALGORITHM);
        mEncryptCypher.init(javax.crypto.Cipher.ENCRYPT_MODE, mKey);
        mDecryptCypher = javax.crypto.Cipher.getInstance(ALGORITHM);
        mDecryptCypher.init(javax.crypto.Cipher.DECRYPT_MODE, mKey);
    } catch (NoSuchAlgorithmException nsae) {
        throw new EncryptorException("Failed to initialize encryptor: ", nsae);
    } catch (NoSuchPaddingException nspe) {
        throw new EncryptorException("Failed to initialize encryptor: ", nspe);
    } catch (InvalidKeyException nske) {
        throw new EncryptorException("Failed to initialize encryptor: ", nske);
    }
}

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From source file:com.anteam.demo.codec.cipher.symmetric.DESTest.java

License:asdf

public byte[] testDESedeDe(byte[] encryptedText) {
    try {//from  ww  w  . ja  va 2 s  .co m
        // Create an array to hold the key
        byte[] encryptKey = "This is a test DESede key".getBytes();

        // Create a DESede key spec from the key
        DESedeKeySpec spec = new DESedeKeySpec(encryptKey);

        // Get the secret key factor for generating DESede keys
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");

        // Generate a DESede SecretKey object
        SecretKey theKey = keyFactory.generateSecret(spec);

        // Create a DESede Cipher
        Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");

        // Create an initialization vector (necessary for CBC mode)

        IvParameterSpec IvParameters = new IvParameterSpec(
                new byte[] { 0x01, 0x02, 0x03, 0x04, 0x0F, 0x0E, 0x0D, 0x0C });

        // Initialize the cipher and put it into encrypt mode
        cipher.init(Cipher.DECRYPT_MODE, theKey, IvParameters);

        return cipher.doFinal(encryptedText);
    } catch (Exception exc) {
        exc.printStackTrace();
    }
    return null;
}

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

/**
 * ??3DESKey// w  w w.  j a  v  a2 s  .co m
 * 
 * @param password
 * @return
 */
public static final SecretKey toDESedeKey(String password) {
    byte[] bb = password.getBytes();
    Assert.isTrue(bb.length > 23, "the secretKey for 3DES must be 24 bytes at least.");
    try {
        KeySpec keySpec = new DESedeKeySpec(bb);
        SecretKey key = SecretKeyFactory.getInstance("DESede").generateSecret(keySpec);
        return key;
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e.getMessage());
    }
}

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