Example usage for javax.crypto Cipher ENCRYPT_MODE

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.drisoftie.cwdroid.util.CredentialUtils.java

private static byte[] encrypt(byte[] key, byte[] clear) throws NoSuchPaddingException, NoSuchAlgorithmException,
        InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    SecretKeySpec skeySpec = new SecretKeySpec(key, AES);
    Cipher cipher = getDefaultCipher();
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
    return cipher.doFinal(clear);
}

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From source file:com.dragoniade.encrypt.EncryptionHelper.java

private static Cipher getEncrypter(String seed) {
    byte[] byteKey = getSeed(seed);
    for (int i = 0; i < algorithmes.length; i++) {
        String algorithm = algorithmes[i];
        try {/*from   ww w. j  ava 2 s .co  m*/
            SecretKeySpec keySpec = new SecretKeySpec(byteKey, algorithm);
            Cipher encrypt = Cipher.getInstance(algorithm);
            encrypt.init(Cipher.ENCRYPT_MODE, keySpec);
            return encrypt;
        } catch (Exception e) {
            continue;
        }
    }
    return null;
}

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

/**
 * RSA Encryption/*from   w w w.ja v a2  s.com*/
 *
 * @param pemKey RSA Key (Public or Private, Public will be derived from Private)
 * @param dataB64 Data encoded with Base64 to encrypt
 * @return Encrypted data Base64 encoded
 * @throws IOException
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeySpecException
 * @throws NoSuchPaddingException
 * @throws InvalidKeyException
 * @throws IllegalBlockSizeException
 * @throws BadPaddingException
 */
public String encrypt(String pemKey, String dataB64)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
    String encryptedB64 = null;
    PublicKey publicKey = null;

    Key key = null;
    try {
        key = CryptoUtil.getKey(pemKey); //can be private or public
    } catch (IOException e) {
        //try to fix key:
        key = CryptoUtil.getKey(CryptoUtil.fixPemString(pemKey));
    }
    if (key instanceof RSAPublicKey) {
        publicKey = (RSAPublicKey) key;
    } else if (key instanceof RSAPrivateCrtKey) {
        RSAPrivateCrtKey privateKey = (RSAPrivateCrtKey) key;
        publicKey = CryptoUtil.getPublicFromPrivate(privateKey);
    } else {
        throw new IllegalArgumentException("Unknown key object type: " + key.getClass().getName());
    }

    Cipher cipher = Cipher.getInstance(CIPHER_TRANSFORMATION);
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    encryptedB64 = Base64.encodeBase64String(cipher.doFinal(Base64.decodeBase64(dataB64)));
    return encryptedB64;
}

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From source file:de.openflorian.crypt.provider.BlowfishCipher.java

@Override
public String encrypt(String str) throws GeneralSecurityException {
    if (key == null || key.isEmpty())
        throw new IllegalStateException("The Blowfish Secret is not set or is length=0.");

    if (str == null)
        return null;

    try {/*from   w  ww  .  j av a 2 s.com*/
        SecretKeySpec keySpec;
        keySpec = new SecretKeySpec(key.getBytes("UTF8"), "Blowfish");

        Cipher cipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, keySpec);

        return new String(new Base64().encode(cipher.doFinal(str.getBytes("UTF8")))).trim();
    } catch (Exception e) {
        log.error(e.getMessage(), e);
        throw new GeneralSecurityException(e.getMessage(), e);
    }
}

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From source file:de.codesourcery.eve.apiclient.utils.PasswordCipherProvider.java

@Override
public Cipher createCipher(boolean decrypt) {

    final char[] password = getPassword();

    if (ArrayUtils.isEmpty(password)) {
        log.warn("createCipher(): No password , returning NULL cipher.");
        return new NullCipher();
    }//from  w  w w.  jav  a 2s .  c o m

    try {

        final int iterations = 20;

        final byte[] salt = new byte[] { (byte) 0xab, (byte) 0xfe, 0x03, 0x47, (byte) 0xde, (byte) 0x99,
                (byte) 0xff, 0x1c };

        final PBEParameterSpec pbeSpec = new PBEParameterSpec(salt, iterations);

        final PBEKeySpec spec = new PBEKeySpec(password, salt, iterations);
        final SecretKeyFactory fac = SecretKeyFactory.getInstance("PBEWithMD5andDES");
        final SecretKey secretKey;
        try {
            secretKey = fac.generateSecret(spec);
        } catch (InvalidKeySpecException e) {
            throw e;
        }

        final Cipher cipher = Cipher.getInstance("PBEWithMD5andDES");
        if (decrypt) {
            cipher.init(Cipher.DECRYPT_MODE, secretKey, pbeSpec);
        } else {
            cipher.init(Cipher.ENCRYPT_MODE, secretKey, pbeSpec);
        }
        return cipher;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:org.edeoliveira.oauth2.dropwizard.oauth2.auth.CookieEncrypter.java

public String encode(String content) throws Exception {
    Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, keySpec);
    byte[] output = cipher.doFinal(content.getBytes(UTF8));
    return Base64.encodeBase64String(output);
}

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From source file:edu.tamu.tcat.crypto.bouncycastle.SecureTokenImpl.java

/**
 * Create a new token generator/parser using an encryption key.  This attempts to fail early by creating a cipher in the constructor.
 * @param keyBytes The encryption key.  ATM, this uses AES, so 128, 194, or 256 bit
 * @throws TokenException Thrown if the key or IV are not properly base64 encoded or the cipher cannot otherwise be created.
 *///from w  ww .  j  a v a 2 s  .c o  m
public SecureTokenImpl(byte[] keyBytes) throws TokenException {
    key = new SecretKeySpec(keyBytes, "AES");
    createCipher(Cipher.ENCRYPT_MODE, createIV());
}

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From source file:de.teamgrit.grit.util.mailer.EncryptorDecryptor.java

/**
 * Encrypts a given string./*from   w w w .ja  v  a  2s. co  m*/
 * 
 * @param stringToEncrypt
 *            : this is the string that shall be encrypted.
 * @return : the encrypted String or null in case of fail. : when
 *         encrypting fails.
 * @throws NoSuchPaddingException
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeyException
 * @throws BadPaddingException
 * @throws IllegalBlockSizeException
 */
public String encrypt(String stringToEncrypt) throws NoSuchAlgorithmException, NoSuchPaddingException,
        InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
    // get cryptographic cipher with the requested transformation, AES
    // (advanced encryption standard) algorithm with ECB (electronic
    // code book) mode and PKCS5Padding (schema to pad cleartext to be
    // multiples of 8-byte blocks) padding.
    Cipher cipher;

    cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

    // use the provided secret key for encryption using AES
    final SecretKeySpec secretKey = new SecretKeySpec(m_key, "AES");

    // initialize cryptographic cipher with encryption mode
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);

    // encode the encrypted string in base 64
    final String encryptedString = Base64.encodeBase64String(cipher.doFinal(stringToEncrypt.getBytes()));
    return encryptedString;
}

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From source file:com.google.feedserver.util.EncryptionUtil.java

/**
 * Encrypts the given string using a symmetric key algorithm
 * //  w  w  w  . ja va 2 s . c  o  m
 * @param input The input
 * @return The encrypted string with hex representation
 * @throws InvalidKeyException
 * @throws BadPaddingException
 * @throws IllegalBlockSizeException
 * @throws NoSuchPaddingException
 * @throws NoSuchAlgorithmException
 */
public String encrypt(String input) throws InvalidKeyException, BadPaddingException, IllegalBlockSizeException,
        NoSuchAlgorithmException, NoSuchPaddingException {
    Cipher cipher = Cipher.getInstance(algorithm);
    cipher.init(Cipher.ENCRYPT_MODE, key);
    byte[] inputBytes = input.getBytes();
    byte[] encryptedBytes = cipher.doFinal(inputBytes);
    String encryptedValue = new String(Hex.encodeHex(encryptedBytes));
    return encryptedValue;
}

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From source file:com.doplgangr.secrecy.filesystem.encryption.AES_ECB_Crypter.java

@Override
public CipherOutputStream getCipherOutputStream(File file, String outputFileName)
        throws SecrecyCipherStreamException, FileNotFoundException {
    Cipher c;//  w  w w . ja  v a2  s .c  o m
    try {
        c = Cipher.getInstance(mode);
    } catch (NoSuchAlgorithmException e) {
        throw new SecrecyCipherStreamException("Encryption algorithm not found!");
    } catch (NoSuchPaddingException e) {
        throw new SecrecyCipherStreamException("Selected padding not found!");
    }

    try {
        c.init(Cipher.ENCRYPT_MODE, aesKey);
    } catch (InvalidKeyException e) {
        throw new SecrecyCipherStreamException("Invalid encryption key!");
    }

    String filename = Base64Coder.encodeString(FilenameUtils.removeExtension(file.getName())) + "."
            + FilenameUtils.getExtension(file.getName());
    File outputFile = new File(vaultPath + "/" + filename);

    BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(new FileOutputStream(outputFile),
            Config.BLOCK_SIZE);

    return new CipherOutputStream(bufferedOutputStream, c);
}

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