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:Main.java

public static void encrypt(String fileIn, String fileOut, byte key[])
        throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {
    // Here you read the cleartext.
    FileInputStream fis = new FileInputStream(fileIn);
    // This stream write the encrypted text. This stream will be wrapped by another stream.
    FileOutputStream fos = new FileOutputStream(fileOut);

    // Length is 32 bytes
    //byte key[] = "1010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100001111000011".getBytes("UTF-8");
    MessageDigest sha = MessageDigest.getInstance("SHA-256");
    key = sha.digest(key);//  ww w.  ja v a  2 s. c o m
    SecretKeySpec sks = new SecretKeySpec(key, "AES");
    // Create cipher
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, sks);
    // Wrap the output stream
    CipherOutputStream cos = new CipherOutputStream(fos, cipher);
    // Write bytes
    int b;
    byte[] d = new byte[8];
    while ((b = fis.read(d)) != -1) {
        cos.write(d, 0, b);
    }
    // Flush and close streams.
    cos.flush();
    cos.close();
    fis.close();
}

From source file:com.agiletec.aps.util.DefaultApsEncrypter.java

public static String encryptString(String plainText) throws ApsSystemException {
    String encryptedString = null;
    try {//from   ww  w  .j a  v  a 2 s .co m
        Key key = getKey();
        Cipher desCipher = Cipher.getInstance(TRIPLE_DES);
        desCipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] cleartext = plainText.getBytes();
        byte[] ciphertext = desCipher.doFinal(cleartext);
        encryptedString = new String(Base64.encodeBase64(ciphertext));
    } catch (Throwable t) {
        throw new ApsSystemException("Error detcted while encoding a string", t);
    }
    return encryptedString;
}

From source file:info.fcrp.keepitsafe.util.Crypt.java

private static void init() {
    if (cryptCipher == null || decryptCipher == null) {
        try {//from www .j  ava 2  s .co  m
            SecretKeySpec keySpec = new SecretKeySpec(password.getBytes(), "AES");
            cryptCipher = Cipher.getInstance("AES");
            cryptCipher.init(Cipher.ENCRYPT_MODE, keySpec);

            decryptCipher = Cipher.getInstance("AES");
            decryptCipher.init(Cipher.DECRYPT_MODE, keySpec);

        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        } catch (NoSuchPaddingException e) {
            throw new RuntimeException(e);
        }
        // output = cipher.doFinal(input)
        //
        // Cipher c = Cipher.getInstance("AES");
        // String plain = "plain";
        // byte[] plainBytes = plain.getBytes();
        //
        // c.init(Cipher.ENCRYPT_MODE, k);
        // c.update(plainBytes);
        //
        // byte[] encBytes = c.doFinal();
        // String enc = Base64.encodeBase64String(encBytes);
        // assertNotSame(plain, enc);
        //
        // c.init(Cipher.DECRYPT_MODE, k);
        // c.update(encBytes);
        // byte[] decBytes = c.doFinal();
        // String dec = new String(decBytes);
        catch (InvalidKeyException e) {
            throw new RuntimeException(e);
        }
    }
}

From source file:DesEncrypter.java

DesEncrypter(SecretKey key) throws Exception {
    byte[] iv = new byte[] { (byte) 0x8E, 0x12, 0x39, (byte) 0x9C, 0x07, 0x72, 0x6F, 0x5A };
    AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
    ecipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
    dcipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

    ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
    dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
}

From source file:com.philosophy.LicenseGen.java

public LicenseGen(String text) {
    license = text;//  ww  w  .j  av a 2s. co m
    byte[] keyBytes = { 88, 42, 94, 52, 56, 81, 82, 98 };
    System.out.println("Original License : " + license);
    try {
        SecretKey key = new SecretKeySpec(keyBytes, "DES");
        Cipher cipher = Cipher.getInstance("DES");
        byte[] data = license.getBytes();
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] encrypted = cipher.doFinal(data);
        System.out.println("Encrypted license : " + new String(encrypted));
        //now convert to base64
        byte[] base64Enc = Base64.encodeBase64(encrypted);
        String encodedLicense = new String(base64Enc);
        System.out.println("Encoded license is : " + encodedLicense);
        System.out.println("Encoding string length is : " + encodedLicense.length());
    } catch (NoSuchAlgorithmException e) {
    } catch (NoSuchPaddingException e) {
    } catch (InvalidKeyException e) {
    } catch (IllegalStateException e) {
    } catch (IllegalBlockSizeException e) {
    } catch (BadPaddingException e) {
    }
}

From source file:com.kylinolap.rest.security.PasswordPlaceholderConfigurer.java

public static String encrypt(String strToEncrypt) {
    try {/*www .jav a2  s .  c  om*/
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        final String encryptedString = Base64.encodeBase64String(cipher.doFinal(strToEncrypt.getBytes()));
        return encryptedString;
    } catch (Exception e) {
    }
    return null;

}

From source file:cr.ac.uia.SistemaGC.utils.AES.java

public static String encrypt(Long cedula, String usuario, String contrasena) {
    //<editor-fold defaultstate="collapsed" desc="Mtodo para cifrar contraseas">
    /*/*w  ww.j  a  va 2s  .  co m*/
    * Inspirado en:
    * http://stackoverflow.com/questions/15554296/simple-java-aes-encrypt-decrypt-example
     */
    try {
        IvParameterSpec iv = new IvParameterSpec(fitString(usuario, 16).getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(fitString(cedula.toString(), 16).getBytes("UTF-8"), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(contrasena.getBytes());
        return Base64.encodeBase64String(encrypted);
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException
            | BadPaddingException e) {
        e.printStackTrace();
        System.err.println(e.getClass().getName() + ": " + e.getMessage());
        System.exit(0);
    }
    return null;
    //</editor-fold>
}

From source file:de.serverfrog.pw.crypt.SerpentUtil.java

public static CipherOutputStream getOutputStream(OutputStream os, Key key) {
    try {/*from  w w w. java2s  .co m*/
        Cipher instance = Cipher.getInstance("Serpent", "BC");
        instance.init(Cipher.ENCRYPT_MODE, key);
        return new CipherOutputStream(os, instance);
    } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchProviderException
            | NoSuchPaddingException ex) {
        Logger.getLogger(SerpentUtil.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
}

From source file:uploadProcess.java

public static boolean encrypt(String path, FileItemStream item, String patientID) {
    try {//from w  w w. j  a v  a2  s.c o  m
        File mainFolder = new File(path + File.separator + "Encrypt");
        if (!mainFolder.exists()) {
            mainFolder.mkdir();
        }
        File patientFolder = new File(mainFolder + File.separator + patientID);
        if (!patientFolder.exists()) {
            patientFolder.mkdir();
        }
        String ukey = GetKey.getPatientKey(patientID);
        InputStream fis = item.openStream();

        FileOutputStream fos = new FileOutputStream(
                patientFolder.getAbsolutePath() + File.separator + item.getName());
        byte[] k = ukey.getBytes();
        SecretKeySpec key = new SecretKeySpec(k, "AES");
        System.out.println(key);
        Cipher enc = Cipher.getInstance("AES");
        enc.init(Cipher.ENCRYPT_MODE, key);
        CipherOutputStream cos = new CipherOutputStream(fos, enc);
        byte[] buf = new byte[1024];
        int read;
        while ((read = fis.read(buf)) != -1) {
            cos.write(buf, 0, read);
        }
        fis.close();
        fos.flush();
        cos.close();

        //Upload File to cloud
        DropboxUpload upload = new DropboxUpload();
        upload.uploadFile(patientFolder, item.getName(), StoragePath.getDropboxDir() + patientID);
        DeleteDirectory.delete(patientFolder);

        return true;
    } catch (Exception e) {
        System.out.println("Error: " + e);
    }
    return false;
}

From source file:illab.nabal.util.SecurityHelper.java

/**
  * AES-encrypt a plain message. Return null if message is empty.
  * /*from   ww  w .j  av a  2 s.c o  m*/
  * @param message
  * @return AES encrypted hex
  * @throws Exception
  */
public static String cipher(String message) throws Exception {
    if (StringHelper.isEmpty(message) == false) {
        Cipher cipher = Cipher.getInstance(AES);
        cipher.init(Cipher.ENCRYPT_MODE, SYSTEM_SECRET_KEY_SPEC);
        return Base64.encodeToString(cipher.doFinal(message.getBytes()), Base64.DEFAULT);
    } else {
        return null;
    }
}

Example usage for javax.crypto Cipher ENCRYPT_MODE

Introduction

Prototype

Document

Usage