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.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 .  co 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.google.resting.rest.util.oauth.SignatureUtil.java

/**
 * Sign request./*from w w w  .jav  a2  s. c  o  m*/
 * 
 * @param keyString Consumer key for request signing.
 * @param targetDomain Domain of the REST endpoint (Ex. login.yahoo.com)
 * @param verb Type of REST operation (GET/POST/PUT/DELETE)
 * @param isSecureInvocation HTTP/HTTPS
 * @param contextPathElement Path element in the base REST uri (Ex. /weather/india)
 * @param inputParams Collection of request params for REST request (Ex. city=calcutta )
 * @return
 * @throws NoSuchAlgorithmException The exception is thrown if the encryption algorithm is not supported.
 * @throws InvalidKeyException The exception is thrown if the consumer key is invalid
 * @throws IllegalStateException 
 * @throws UnsupportedEncodingException The exception is thrown if the URL encoding is incorrect.
 */
public static String getSignature(String keyString, String targetDomain, Verb verb, boolean isSecureInvocation,
        String contextPathElement, List<NameValuePair> inputParams, String messageEncoding)
        throws NoSuchAlgorithmException, InvalidKeyException, IllegalStateException,
        UnsupportedEncodingException {

    String baseString = getBaseString(targetDomain, verb.toString(), isSecureInvocation, contextPathElement,
            inputParams, messageEncoding).replace("+", "%20").replace("*", "%2A").replace("%7E", "~");

    System.out.println("Base string is " + baseString);
    Mac mac = Mac.getInstance("HmacSHA1");
    SecretKeySpec secret = new SecretKeySpec(keyString.getBytes(messageEncoding), mac.getAlgorithm());
    mac.init(secret);
    byte[] digest = mac.doFinal(baseString.getBytes(messageEncoding));
    return new String(Base64.encodeBase64(digest)).replace(RequestConstants.CARRIAGE_RETURN,
            RequestConstants.EMPTY_STRING);
}

From source file:edu.utdallas.bigsecret.cipher.AesCtr.java

/**
 * Class constructor. Creates a Javax.Crypto.Cipher instance with AES in CTR<br>
 * mode, without any padding. /*from   ww w .ja v  a2 s . c o m*/
 * @param key Input key for the cipher. Should be 16, 24, or 32 bytes long
 * @throws Exception Throws exception if key length is not 16, 24, or 32 bytes.<br>
 *                 May throw exception based on Javax.Crypto classes.
 */
public AesCtr(byte[] key) throws Exception {
    //use default constructor for cipher.Cipher
    super();

    //check if input key is ok
    if (key.length != 16 && key.length != 24 && key.length != 32) {
        throw new Exception("Key length should be 16, 24, or 32 bytes long");
    }

    //set key length
    KEY_SIZE_BYTES = key.length;

    //create secret key spec instance
    m_keySpec = new SecretKeySpec(key, "AES");

    //create cipher instance
    m_cipher = javax.crypto.Cipher.getInstance("AES/CTR/NoPadding");

    //create secure random number generator instance
    m_secureRandom = new SecureRandom();
}

From source file:com.teasoft.teavote.util.AppProperties.java

public void setSecret(String secret) {
    try {// w ww . j  av a 2s .c  o m
        String first = PBKDF2_ALGORITHM.substring(0, PBKDF2_ALGORITHM.length() - 2);
        String second = "";
        for (int i = 0, j = 12; i < 4; i++) {
            second += first.substring(j - (i * 4), first.length() - i * 4);
        }
        Key aesKey = new SecretKeySpec(second.getBytes(), "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, aesKey);
        byte[] encrypted = cipher.doFinal(secret.getBytes());
        this.secret = Base64.encodeBase64String(encrypted);
    } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException
            | BadPaddingException ex) {
        Logger.getLogger(AppProperties.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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

/**
 * ?//from w  w w.  j  av  a 2 s  . com
 * 
 * @return Key
 */
private static Key generateKey(String keyStr) {
    byte[] keyBytes = null;
    try {
        if (keyStr == null) {
            keyBytes = DEFAULT_KEY.getBytes(DEFAULT_CHARSET);
        } else {
            keyBytes = keyStr.getBytes(DEFAULT_CHARSET);
        }
    } catch (UnsupportedEncodingException e) {
    }
    return new SecretKeySpec(keyBytes, "Blowfish");
}

From source file:SecurityUtils.java

/**
 * Converts a source string to its HMAC/SHA-1 value.
 * /*from ww w.  j a v a2  s.co m*/
 * @param source
 *            The source string to convert.
 * @param secretKey
 *            The secret key to use for conversion.
 * @return The HMac value of the source string.
 */
public static byte[] toHMac(String source, String secretKey) {
    byte[] result = null;

    try {
        // Create the HMAC/SHA1 key
        final SecretKeySpec signingKey = new SecretKeySpec(secretKey.getBytes(), "HmacSHA1");

        // Create the message authentication code (MAC)
        final Mac mac = Mac.getInstance("HmacSHA1");
        mac.init(signingKey);

        // Compute the HMAC value
        result = mac.doFinal(source.getBytes());
    } catch (NoSuchAlgorithmException nsae) {
        throw new RuntimeException("Could not find the SHA-1 algorithm. HMac conversion failed.", nsae);
    } catch (InvalidKeyException ike) {
        throw new RuntimeException("Invalid key exception detected. HMac conversion failed.", ike);
    }

    return result;
}

From source file:fr.ortolang.diffusion.security.authentication.TOTPHelper.java

private static byte[] hmacSha(byte[] keyBytes, byte[] text) {
    try {/*from  ww w.  j  a  v  a  2  s .co  m*/
        Mac hmac;
        hmac = Mac.getInstance("HmacSHA1");
        SecretKeySpec macKey = new SecretKeySpec(keyBytes, "RAW");
        hmac.init(macKey);
        return hmac.doFinal(text);
    } catch (GeneralSecurityException gse) {
        throw new UndeclaredThrowableException(gse);
    }
}

From source file:adminpassword.AESDemo.java

@SuppressWarnings("static-access")
public String decrypt(String encryptedText) throws Exception {

    byte[] saltBytes = salt.getBytes("UTF-8");
    byte[] encryptedTextBytes = new Base64().decodeBase64(encryptedText);

    // Derive the key
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), saltBytes, pswdIterations, keySize);

    SecretKey secretKey = factory.generateSecret(spec);
    SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");

    // Decrypt the message
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(ivBytes));

    byte[] decryptedTextBytes = null;
    try {/*www.  ja  v  a 2 s  .  co m*/
        decryptedTextBytes = cipher.doFinal(encryptedTextBytes);
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    }

    return new String(decryptedTextBytes);
}

From source file:net.sourceforge.vulcan.web.SignedRequestAuthorizationFilter.java

@Override
protected void initFilterBean() throws ServletException {
    if (StringUtils.isBlank(sharedSecret)) {
        secretKey = null;/*from  w  ww. j ava2  s.  co  m*/
        return;
    }

    try {
        secretKey = new SecretKeySpec(sharedSecret.getBytes(), algorithm);

        // Initialize a mac instance to fail fast on NoSuchAlgorithmException or InvalidKeyException.
        // This way any configuration errors will prevent the application from starting instead of causing
        // problems later.
        final Mac mac = Mac.getInstance(algorithm);

        mac.init(secretKey);
    } catch (NoSuchAlgorithmException e) {
        throw new ServletException(e);
    } catch (InvalidKeyException e) {
        throw new ServletException(e);
    }
}

From source file:com.kku.apps.pricesearch.util.SignedHelper.java

private static String sign(String apiSecretKey, String sourceString) throws Exception {
    SecretKeySpec secretKeySpec = new SecretKeySpec(apiSecretKey.getBytes(ENCODING), ALGORITHM);
    Mac mac = Mac.getInstance(ALGORITHM);
    mac.init(secretKeySpec);//from  w  ww.  j a va 2 s .c om
    byte[] data = mac.doFinal(sourceString.getBytes(ENCODING));
    Base64 encoder = new Base64();
    String signature = new String(encoder.encode(data));
    return signature;
}