Example usage for javax.crypto.spec IvParameterSpec IvParameterSpec

Introduction

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

Prototype

public IvParameterSpec(byte[] iv)

Source Link

Document

Creates an IvParameterSpec object using the bytes in iv as the IV.

Usage

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

License:asdf

@Test
public void testDES() throws Exception {
    SecretKey key = KeyGenerator.getInstance("DES").generateKey();

    // for CBC; must be 8 bytes
    byte[] initVector = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x0F, 0x0E, 0x0D, 0x0C };

    AlgorithmParameterSpec algParamSpec = new IvParameterSpec(initVector);
    Cipher m_encrypter = Cipher.getInstance("DES/CBC/PKCS5Padding");
    Cipher m_decrypter = Cipher.getInstance("DES/CBC/PKCS5Padding");

    m_encrypter.init(Cipher.ENCRYPT_MODE, key, algParamSpec);
    m_decrypter.init(Cipher.DECRYPT_MODE, key, algParamSpec);

    byte[] clearText = "?????;(*)*$(R%*PDSJF>XJIPUFIWE(*#*&$)@#*"
            .getBytes();//from w ww.j a  v a 2 s . co  m

    System.out.println(clearText.length);

    byte[] encryptedText = m_encrypter.doFinal(clearText);
    System.out.println(encryptedText.length);

    byte[] decryptedText = m_decrypter.doFinal(encryptedText);
    System.out.println(decryptedText.length);

    System.out.println(new String(clearText));
    System.out.println(new String(encryptedText));
    System.out.println(new String(decryptedText));

}

From source file:com.github.woki.payments.adyen.action.CSEUtil.java

static String encrypt(final Cipher aesCipher, final Cipher rsaCipher, final String plainText)
        throws BadPaddingException, IllegalBlockSizeException, NoSuchAlgorithmException,
        InvalidAlgorithmParameterException, InvalidKeyException {
    SecretKey aesKey = aesKey(256);
    byte[] iv = iv(CSE_RANDOM, 12);
    aesCipher.init(Cipher.ENCRYPT_MODE, aesKey, new IvParameterSpec(iv));
    byte[] encrypted = aesCipher.doFinal(plainText.getBytes());

    byte[] result = new byte[iv.length + encrypted.length];
    System.arraycopy(iv, 0, result, 0, iv.length);
    System.arraycopy(encrypted, 0, result, iv.length, encrypted.length);

    byte[] encryptedAESKey;
    try {/*w w w. j  av  a 2 s . c o  m*/
        encryptedAESKey = rsaCipher.doFinal(aesKey.getEncoded());
    } catch (ArrayIndexOutOfBoundsException e) {
        throw new InvalidKeyException(e.getMessage());
    }
    return String.format("%s%s%s%s%s%s", CSE_PREFIX, CSE_VERSION, CSE_SEPARATOR,
            Base64.encodeBase64String(encryptedAESKey), CSE_SEPARATOR, Base64.encodeBase64String(result));
}

From source file:org.sakuli.services.cipher.AesCbcCipher.java

public static IvParameterSpec readIV(final int ivSizeBytes, final InputStream is) throws IOException {
    final byte[] iv = new byte[ivSizeBytes];
    int offset = 0;
    while (offset < ivSizeBytes) {
        final int read = is.read(iv, offset, ivSizeBytes - offset);
        if (read == -1) {
            throw new IOException("Too few bytes for IV in input stream");
        }//from  ww  w  .j  ava 2s. c om
        offset += read;
    }
    return new IvParameterSpec(iv);
}

From source file:org.gumtree.security.EncryptionUtils.java

public static String decryptBase64(String encrytedBase64String, String key, String iv) throws Exception {
    byte[] data = Base64.decodeBase64(encrytedBase64String.getBytes());
    SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "DES");
    IvParameterSpec ivSpec = new IvParameterSpec(iv.getBytes());
    Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
    cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
    byte[] decrypted = new byte[cipher.getOutputSize(data.length)];
    int dec_len = cipher.update(data, 0, data.length, decrypted, 0);
    dec_len += cipher.doFinal(decrypted, dec_len);
    return new String(decrypted).trim();
}

From source file:Main.java

private static Cipher initCipher(int mode, byte[] key, byte[] iv, String cipherAlgotirhm) {
    try {/*from  w w  w .  j a  va  2  s.  c  o  m*/
        Key k = toKey(key);
        Cipher cipher = Cipher.getInstance(cipherAlgotirhm);
        String CipherAlgotirhm = cipherAlgotirhm.toUpperCase();
        if (CipherAlgotirhm.contains("CFB") || CipherAlgotirhm.contains("CBC"))
            cipher.init(mode, k, new IvParameterSpec(iv));
        else
            cipher.init(mode, k);
        return cipher;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;

}

From source file:MainClass.java

public static IvParameterSpec createCtrIvForAES() {
    return new IvParameterSpec("1234567812345678".getBytes());
}

From source file:ren.hankai.cordwood.core.util.EncryptionUtil.java

/**
 * AES /?128?256?256??JRE??// w w w.j  av  a 2s.  c  o m
 *
 * @param value 
 * @param sk 16?128?
 * @param encrypt truefalse
 * @return base64 ?'+''/'?'-''_'
 * @author hankai
 * @since Jun 28, 2016 1:21:55 PM
 */
public static String aes(String value, String sk, boolean encrypt) {
    try {
        final IvParameterSpec iv = new IvParameterSpec("RandomInitVector".getBytes("UTF-8"));
        final SecretKeySpec skeySpec = new SecretKeySpec(sk.getBytes("UTF-8"), "AES");
        final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        if (encrypt) {
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
            final byte[] encrypted = cipher.doFinal(value.getBytes());
            String result = Base64.encodeBase64String(encrypted);
            result = result.replaceAll("\\+", "-");
            result = result.replaceAll("/", "_");
            return result;
        } else {
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
            value = value.replaceAll("-", "+");
            value = value.replaceAll("_", "/");
            final byte[] original = cipher.doFinal(Base64.decodeBase64(value));
            return new String(original);
        }
    } catch (final Exception ex) {
        logger.error(String.format("AES encryption failed! %s\n{ Value: %s, sk: %s, encrypt:%s }\n",
                ex.getMessage(), value, sk, encrypt));
    }
    return null;
}

From source file:com.haulmont.cuba.web.test.PasswordEncryptionTest.java

protected String encryptPassword(String password) {
    SecretKeySpec key = new SecretKeySpec(PASSWORD_KEY.getBytes(), "DES");
    IvParameterSpec ivSpec = new IvParameterSpec(PASSWORD_KEY.getBytes());
    String result;/*w w w.ja v a2  s . com*/
    try {
        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);
        result = new String(Hex.encodeHex(cipher.doFinal(password.getBytes())));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    return result;
}

From source file:com.amazonaws.cognito.sync.devauth.client.AESEncryption.java

/**
 * Decrypt a cipher in bytes using the specified key
 * /*w  w w . j  ava  2  s .c  om*/
 * @param cipherBytes encrypted bytes
 * @param key the key used in decryption
 * @param iv
 * @return
 * @throws Exception
 */
public static byte[] decrypt(byte[] cipherBytes, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.DECRYPT_MODE, getKey(key), params);
    return cipher.doFinal(cipherBytes);
}

From source file:com.aast.encrypt.EncryptManager.java

public static String decryptAES(String key, String encrypted) {
    try {//from  ww  w .j av a  2s  .  c o  m
        byte[] keyBytes = getKeyFromString(key);
        IvParameterSpec iv = new IvParameterSpec(keyBytes);
        SecretKeySpec skeySpec = new SecretKeySpec(keyBytes, "AES");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);

        byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));

        return new String(original);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}