Example usage for javax.crypto.spec SecretKeySpec SecretKeySpec

Introduction

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

Prototype

public SecretKeySpec(byte[] key, String algorithm)

Source Link

Document

Constructs a secret key from the given byte array.

Usage

From source file:com.confighub.core.security.Encryption.java

private static String encryptShared(CipherTransformation ct, String decrypted, String secret)
        throws ConfigException {
    if (null == decrypted)
        return null;

    try {/*from  w w w . j  a  va2s .c om*/
        Cipher cipher = Cipher.getInstance(ct.getName());
        final int blockSize = cipher.getBlockSize();

        SecretKeySpec sharedKey = new SecretKeySpec(getKeyAsBytes(secret, ct.getKeyLen()), ct.getAlgo());

        if ("CBC".equals(ct.getMode()))
            cipher.init(Cipher.ENCRYPT_MODE, sharedKey, new IvParameterSpec(getIV(blockSize)));
        else
            cipher.init(Cipher.ENCRYPT_MODE, sharedKey);

        byte[] encrypted = cipher.doFinal(Utils.isBlank(decrypted) ? new byte[0] : decrypted.getBytes("UTF8"));
        return Base64.encodeBase64String(encrypted);
    } catch (Exception e) {
        throw new ConfigException(Error.Code.ENCRYPTION_ERROR);
    }
}

From source file:chronic.app.ChronicCookie.java

public static String createAuthCode(byte[] secret, String string, long value) throws GeneralSecurityException {
    Mac mac = Mac.getInstance("HmacSHA1");
    SecretKeySpec signKey = new SecretKeySpec(secret, "HmacSHA1");
    mac.init(signKey);//  ww w.  ja va  2 s. c  om
    mac.update(string.getBytes());
    return new Base32().encodeAsString(mac.doFinal(Bytes.toByteArray(value)));
}

From source file:Main.java

/**
 * Generates SHA256 hash of the password which is used as key
 *
 * @param password used to generated key
 * @return SHA256 of the password//from w w  w. j  a  v  a 2  s. c om
 */
private static SecretKeySpec generateKey(final String password)
        throws NoSuchAlgorithmException, UnsupportedEncodingException {
    final MessageDigest digest = MessageDigest.getInstance(HASH_ALGORITHM);
    byte[] bytes = password.getBytes("UTF-8");
    digest.update(bytes, 0, bytes.length);
    byte[] key = digest.digest();

    log("SHA-256 key ", key);

    return new SecretKeySpec(key, "AES");
}

From source file:com.feedzai.commons.sql.abstraction.util.AESHelper.java

/**
 * Decrypts a byte[] encrypted by {@link #encrypt} method.
 *
 * @param c   The encrypted HEX byte[]./*from   ww  w  . ja  va  2 s.c  o  m*/
 * @param key The key.
 * @return The decrypted string in a byte[].
 */
public static byte[] decrypt(byte[] c, String key) {
    try {
        SecretKeySpec skeySpec = new SecretKeySpec(Hex.decodeHex(key.toCharArray()), "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec);
        return cipher.doFinal(Hex.decodeHex((new String(c).toCharArray())));
    } catch (Exception e) {
        logger.warn("Could not decrypt byte[]", e);
        return null;
    }
}

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

public CookieEncrypter(String secret) throws Exception {
    byte[] tmp = secret.getBytes(UTF8);

    if ((tmp.length * 8) < BIT_LENGTH)
        throw new IllegalArgumentException(
                "Wrong key size (" + (tmp.length * 8) + ") lower than the " + BIT_LENGTH + " bits required");

    byte[] secretKey = new byte[BIT_LENGTH / 8];
    System.arraycopy(tmp, 0, secretKey, 0, secretKey.length);
    keySpec = new SecretKeySpec(secretKey, ALGORITHM);
}

From source file:com.ec2box.manage.util.EncryptionUtil.java

/**
 * return decrypted value of encrypted string
 *
 * @param str encrypted string//from  w w  w . ja va2 s  .com
 * @return decrypted string
 */
public static String decrypt(String str) {
    String retVal = null;
    if (str != null && str.length() > 0) {
        try {
            Cipher c = Cipher.getInstance("AES");
            c.init(Cipher.DECRYPT_MODE, new SecretKeySpec(key, "AES"));
            byte[] decodedVal = Base64.decodeBase64(str.getBytes());
            retVal = new String(c.doFinal(decodedVal));
        } catch (Exception ex) {
            log.error(ex.toString(), ex);
        }

    }
    return retVal;
}

From source file:com.bconomy.autobit.Encryption.java

public static byte[] decrypt(byte[] cyphertext, byte[] key) {
    if (keySpec == null)
        keySpec = new SecretKeySpec(key, "AES");
    Cipher aes;/* ww w .j ava2 s .  c  o m*/
    try {
        aes = Cipher.getInstance("AES/ECB/PKCS5Padding");
        aes.init(Cipher.DECRYPT_MODE, keySpec);
        return aes.doFinal(cyphertext);
    } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException
            | BadPaddingException ex) {
        ex.printStackTrace();
    }
    return new byte[0];
}

From source file:net.sourceforge.js3tream.util.Access.java

/*******************************************************
 * @throws Exception/*w  ww . j  a  v a  2  s. c  om*/
 ******************************************************/
public Access() throws Exception {
    this.calFormat_ = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
    this.calFormat_.setTimeZone(TimeZone.getTimeZone("GMT"));
    this.mac_ = Mac.getInstance(HMAC_SHA1);
    this.mac_.init(new SecretKeySpec(Access.accessSecret_.getBytes(), HMAC_SHA1));

}

From source file:com.xwiki.authentication.AbstractAuthServiceImpl.java

protected String encryptText(String text, XWikiContext context) {
    try {//from ww  w  .j a  v  a 2s  .  co m
        String secretKey = null;
        secretKey = context.getWiki().Param("xwiki.authentication.encryptionKey");
        secretKey = secretKey.substring(0, 24);

        if (secretKey != null) {
            SecretKeySpec key = new SecretKeySpec(secretKey.getBytes(), "TripleDES");
            Cipher cipher = Cipher.getInstance("TripleDES");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] encrypted = cipher.doFinal(text.getBytes());
            String encoded = new String(Base64.encodeBase64(encrypted));
            return encoded.replaceAll("=", "_");
        } else {
            LOG.error("Encryption key not defined");
        }
    } catch (Exception e) {
        LOG.error("Failed to encrypt text", e);
    }

    return null;
}

From source file:com.sshtools.j2ssh.transport.hmac.HmacSha.java

/**
 *
 *
 * @param keydata//  w  w  w.  ja v a 2s.com
 *
 * @throws AlgorithmInitializationException
 */
public void init(byte[] keydata) throws AlgorithmInitializationException {
    try {
        mac = Mac.getInstance("HmacSha1");

        byte[] key = new byte[20];
        System.arraycopy(keydata, 0, key, 0, 20);

        SecretKeySpec keyspec = new SecretKeySpec(key, "HmacSha1");

        mac.init(keyspec);
    } catch (NoSuchAlgorithmException nsae) {
        throw new AlgorithmInitializationException("No provider exists for the HmacSha1 algorithm");
    } catch (InvalidKeyException ike) {
        throw new AlgorithmInitializationException("Invalid key");
    }
}