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:org.soulwing.credo.service.crypto.jca.JcaAESEncryptedSecretKeyWrapper.java

@Override
protected Cipher createCipher() throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
        InvalidParameterSpecException, InvalidAlgorithmParameterException {
    Cipher cipher = Cipher.getInstance(transform);
    cipher.init(Cipher.UNWRAP_MODE, getKey(), new IvParameterSpec(iv));
    return cipher;
}

From source file:com.baran.crypto.CryptoDES.java

public byte[] encrypt(File file, String trivia) throws Exception {
    final MessageDigest md = MessageDigest.getInstance("md5");
    // digest the trivia password in UTF-8
    final byte[] digestTrivia = md.digest(trivia.getBytes("utf-8"));

    // truncating digest
    final byte[] keyBytes = Arrays.copyOf(digestTrivia, 24);
    for (int j = 0, k = 16; j < 8;) {
        keyBytes[k++] = keyBytes[j++];/*from  w  w w  .j av  a  2  s  .c  o m*/
    }
    // DESede setting
    final SecretKey key = new SecretKeySpec(keyBytes, "DESede");

    // CBC IV setting
    final IvParameterSpec iv = new IvParameterSpec(new byte[8]);

    final Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key, iv);

    String allInOne = FileUtils.readFileToString(file, "utf-8");

    final byte[] plainTextBytes = allInOne.getBytes("utf-8");
    final byte[] cipherText = cipher.doFinal(plainTextBytes);

    return cipherText;
}

From source file:com.thoughtworks.go.security.AESEncrypter.java

@Override
public String encrypt(String plainText) throws CryptoException {
    try {/*  w  w w  .ja  va2  s  . c om*/
        byte[] initializationVector = getIvProviderInstance().createIV();
        Cipher encryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        encryptCipher.init(Cipher.ENCRYPT_MODE, createSecretKeySpec(),
                new IvParameterSpec(initializationVector));

        byte[] bytesToEncrypt = plainText.getBytes(StandardCharsets.UTF_8);
        byte[] encryptedBytes = encryptCipher.doFinal(bytesToEncrypt);

        return String.join(":", "AES", ENCODER.encodeToString(initializationVector),
                ENCODER.encodeToString(encryptedBytes));
    } catch (Exception e) {
        throw new CryptoException(e);
    }
}

From source file:com.dasol.util.AES256Util.java

public String aesDecode(String str) throws java.io.UnsupportedEncodingException, NoSuchAlgorithmException,
        NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException,
        IllegalBlockSizeException, BadPaddingException {
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    c.init(Cipher.DECRYPT_MODE, keySpec, new IvParameterSpec(iv.getBytes("UTF-8")));

    byte[] byteStr = Base64.decodeBase64(str.getBytes());

    return new String(c.doFinal(byteStr), "UTF-8");
}

From source file:com.github.sshw.crypt.EncryptionBean.java

public String decrypt(String message, String password) throws Exception {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    Key key = keyFromPassword(password);
    byte[] cb = Base64.decodeBase64(message);
    IvParameterSpec ivb = new IvParameterSpec(key.getEncoded());
    cipher.init(Cipher.DECRYPT_MODE, key, ivb);
    String plaintext = new String(cipher.doFinal(cb));
    return plaintext;
}

From source file:org.toffi.domainmodel.encryptor.impl.AESEncryptorImpl.java

@Override
public byte[] encrypt(byte[] data) {
    try {/*w  w  w.j  a v  a  2s.  c om*/
        // generate random initialization vector
        byte[] iv = new byte[ivLen];
        synchronized (random) {
            random.nextBytes(iv);
        }

        // encrypt
        IvParameterSpec paramSpec = new IvParameterSpec(iv);
        byte[] encryptedMessage = null;
        synchronized (encCipher) {
            encCipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
            encryptedMessage = encCipher.doFinal(data);
        }
        // finalMessage = iv + encryptedMessage
        byte[] finalMessage = new byte[encryptedMessage.length + ivLen];
        System.arraycopy(iv, 0, finalMessage, 0, ivLen);
        System.arraycopy(encryptedMessage, 0, finalMessage, ivLen, encryptedMessage.length);

        return finalMessage;
    } catch (Exception e) {
        LOG.error("Unable to decrypt input message", e);
        throw new EncryptorException("Encryption error!", e);
    }
}

From source file:org.matrix.security.crypto.encrypt.AesBytesEncryptor.java

public byte[] encrypt(byte[] bytes) {
    synchronized (encryptor) {
        byte[] iv = ivGenerator.generateKey();
        initCipher(encryptor, Cipher.ENCRYPT_MODE, secretKey, new IvParameterSpec(iv));
        byte[] encrypted = doFinal(encryptor, bytes);
        return ivGenerator != NULL_IV_GENERATOR ? concatenate(iv, encrypted) : encrypted;
    }/*from w  w w. ja v  a  2  s. c  o m*/
}

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

/**
 * Instantiates a new encrypter.//from  w ww . ja  v a  2 s .  c om
 * 
 * @param keyString
 *            the key string
 * @param ivString
 *            the iv string
 * @since 5/08/2014, 08:03:33 PM
 */
public Encrypter(String keyString, String ivString) {
    try {
        final MessageDigest md = MessageDigest.getInstance("md5");
        final byte[] digestOfPassword = md.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++];
        }

        keySpec = new DESedeKeySpec(keyBytes);

        key = SecretKeyFactory.getInstance("DESede").generateSecret(keySpec);

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

From source file:io.hawkcd.agent.services.SecurityService.java

private Cipher getCipher(int mode) throws Exception {
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    byte[] iv = getBytes(IV);
    c.init(mode, generateKey(), new IvParameterSpec(iv));
    return c;/*from ww w.j a  va 2s.c  o m*/
}

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

public Blowfish(String keySpec, byte[] paramSpec) {
    this.keySpec = new SecretKeySpec(keySpec.getBytes(), ALGORITHM);
    this.paramSpec = new IvParameterSpec(paramSpec);
    initBlowfish();//from  w w w.j  av a 2s.c o  m
}