Example usage for javax.crypto Cipher ENCRYPT

Introduction

In this page you can find the example usage for javax.crypto Cipher ENCRYPT_MODE.

Prototype

int ENCRYPT_MODE

To view the source code for javax.crypto Cipher ENCRYPT_MODE.

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Document

Constant used to initialize cipher to encryption mode.

Usage

From source file:com.redsqirl.workflow.utils.FileStream.java

private static byte[] encrypt(byte[] plaintext) throws Exception {
    SecretKey key = generateKey();
    PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 42);
    Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
    cipher.init(Cipher.ENCRYPT_MODE, key, pbeParamSpec);
    return cipher.doFinal(plaintext);
}

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??//from   ww w. j  a  va 2 s.co  m
    Cipher cipher = Cipher.getInstance(DES);
    // ?Cipher
    cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
    return cipher.doFinal(pwd.getBytes());
}

From source file:com.mb.framework.util.SecurityUtil.java

/**
 * //from  w w  w  .  ja  v a2 s. co m
 * This method is used for encrypt by using Algorithm - AES
 * 
 * @param String
 * @return String
 * @throws Exception
 */
public static String encryptAES(String data) throws Exception {

    Key key = generateKeyAES(); // step 1

    Cipher c = Cipher.getInstance(AES_ALGO); // step 2
    c.init(Cipher.ENCRYPT_MODE, key); // step 3

    byte[] encVal = c.doFinal(data.getBytes()); // step 4
    String encryptedValue = new BASE64Encoder().encode(encVal); // step 5

    return encryptedValue;
}

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

private static void generateCipher(String rawKey) {
    try {/*from ww w . j a v  a 2s. c o  m*/
        SecretKeySpec keySpec = new SecretKeySpec(rawKey.getBytes(ENCODE_UTF_8), CIPHER_NAME);
        encodeCipher = Cipher.getInstance(CIPHER_NAME);
        encodeCipher.init(Cipher.ENCRYPT_MODE, keySpec);

        decodeCipher = Cipher.getInstance(CIPHER_NAME);
        byte iv[] = encodeCipher.getIV();
        IvParameterSpec ivParameterSpec = new IvParameterSpec(iv);
        decodeCipher.init(Cipher.DECRYPT_MODE, keySpec, ivParameterSpec);
    } catch (InvalidKeyException e) {
        throw new RuntimeException(e);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    } catch (NoSuchPaddingException e) {
        throw new RuntimeException(e);
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    } catch (InvalidAlgorithmParameterException e) {
        e.printStackTrace();
    }

}

From source file:net.navasoft.madcoin.backend.services.security.Encrypter.java

/**
 * Encrypt.//from  w w  w.  jav  a 2s .com
 * 
 * @param value
 *            the value
 * @return the string
 * @since 5/08/2014, 08:03:33 PM
 */
public String encrypt(String value) {
    try {
        Cipher ecipher = Cipher.getInstance("DESede/CBC/PKCS5Padding", "SunJCE");
        ecipher.init(Cipher.ENCRYPT_MODE, key, iv);

        if (value == null)
            return null;

        // Encode the string into bytes using utf-8
        byte[] utf8 = value.getBytes("UTF8");

        // Encrypt
        byte[] enc = ecipher.doFinal(utf8);

        // Encode bytes to base64 to get a string
        return new String(Base64.encodeBase64(enc), "UTF-8");
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:se.vgregion.portal.cs.util.CryptoUtilImpl.java

/**
 * Encrypt a value and generate a keyfile. if the keyfile is not found then a new one is created
 * //  w  ww . jav  a2s. c o  m
 * @param value
 *            - value to be encrypted
 * @throws GeneralSecurityException
 *             - security exception
 * @return Encrypted value
 */
@Override
public String encrypt(String value) throws GeneralSecurityException {
    if (!keyFile.exists()) {
        KeyGenerator keyGen = KeyGenerator.getInstance(AES);
        keyGen.init(KEY_SIZE);
        SecretKey sk = keyGen.generateKey();
        FileWriter fw = null;
        try {
            fw = new FileWriter(keyFile);
            fw.write(byteArrayToHexString(sk.getEncoded()));
            fw.flush();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                fw.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    SecretKeySpec sks = getSecretKeySpec();

    Cipher cipher = Cipher.getInstance(AES);
    cipher.init(Cipher.ENCRYPT_MODE, sks, cipher.getParameters());
    byte[] encrypted = cipher.doFinal(value.getBytes());
    return byteArrayToHexString(encrypted);
}

From source file:com.adaptris.security.password.AesCrypto.java

public String encode(String plainText, String charset) throws PasswordException {
    String result = null;/*from www.  j  a  v a 2s  .  c o  m*/
    try {
        KeyGenerator kg = KeyGenerator.getInstance(ALG);
        kg.init(KEY_LEN, SecurityUtil.getSecureRandom());
        SecretKey sessionKey = kg.generateKey();
        Cipher dataCipher = Cipher.getInstance(CIPHER);
        dataCipher.init(Cipher.ENCRYPT_MODE, sessionKey);
        byte[] encryptedBody = dataCipher.doFinal(seed(plainText, charset));
        Output output = new Output();
        output.setSessionKey(sessionKey.getEncoded());
        output.setSessionVector(dataCipher.getIV());
        output.setEncryptedData(encryptedBody);
        result = Password.PORTABLE_PASSWORD + output.write();
    } catch (Exception e) {
        throw new PasswordException(e);
    }
    return result;
}

From source file:com.bamboocloud.im.provisioner.json.crypto.simple.SimpleEncryptor.java

/**
 * Encrypts with a symmetric cipher.//from   www  . jav a 2  s  .  c  om
 *
 * @param value the value to be encrypted.
 * @return the encrypted value.
 * @throws GeneralSecurityException if a cryptographic operation failed.
 * @throws IOException if an I/O exception occurred.
 */
private Object symmetric(Object object) throws GeneralSecurityException, IOException {
    Cipher symmetric = Cipher.getInstance(cipher);
    symmetric.init(Cipher.ENCRYPT_MODE, key);
    String data = Base64.encodeBase64String(symmetric.doFinal(mapper.writeValueAsBytes(object)));
    byte[] iv = symmetric.getIV();
    HashMap<String, Object> result = new HashMap<String, Object>();
    result.put("cipher", this.cipher);
    result.put("key", this.alias);
    result.put("data", data);
    if (iv != null) {
        result.put("iv", Base64.encodeBase64String(iv));
    }
    return result;
}

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

/**
 * Description ?/*  w  w  w  .  jav a 2  s .c o  m*/
 *
 * @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);

}

From source file:cherry.goods.crypto.RSASignatureTest.java

private RSASignature create2(char[] password) throws Exception {

    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);/*from  ww w  .  j  a v a  2  s  .c  om*/
    KeyPair key = keygen.generateKeyPair();

    String pbeAlgName = "PBEWithMD5AndDES";
    PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
    PBEParameterSpec pbeParamSpec = new PBEParameterSpec(RandomUtils.nextBytes(8), 20);
    SecretKey pbeKey = SecretKeyFactory.getInstance(pbeAlgName).generateSecret(pbeKeySpec);
    AlgorithmParameters pbeParam = AlgorithmParameters.getInstance(pbeAlgName);
    pbeParam.init(pbeParamSpec);
    Cipher cipher = Cipher.getInstance(pbeAlgName);
    cipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParam);
    EncryptedPrivateKeyInfo encryptedKeyInfo = new EncryptedPrivateKeyInfo(pbeParam,
            cipher.doFinal(key.getPrivate().getEncoded()));

    RSASignature impl = new RSASignature();
    impl.setAlgorithm("SHA256withRSA");
    impl.setPublicKeyBytes(key.getPublic().getEncoded());
    impl.setPrivateKeyBytes(encryptedKeyInfo.getEncoded(), password);
    return impl;
}

Example usage for javax.crypto Cipher ENCRYPT_MODE

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