Example usage for javax.crypto Mac getInstance

Introduction

In this page you can find the example usage for javax.crypto Mac getInstance.

Prototype

public static final Mac getInstance(String algorithm) throws NoSuchAlgorithmException 

Source Link

Document

Returns a Mac object that implements the specified MAC algorithm.

Usage

From source file:co.edu.uniandes.csw.Arquidalgos.usuario.service._UsuarioService.java

@POST
@Path("/crearUsuario")
public UsuarioDTO crearUsuario(UsuarioDTO usuario) throws Exception {

    Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
    String key = "123";
    SecretKeySpec secret_key = new SecretKeySpec(key.getBytes(), "HmacSHA256");
    sha256_HMAC.init(secret_key);//ww  w  .  jav a  2  s. co  m

    System.out.println("TO String: " + usuario.toString());

    String hash = Hex.encodeHexString(sha256_HMAC.doFinal(usuario.toString().getBytes()));
    System.out.println("CODIGO HASH: " + hash);
    System.out.println("CODIGO HASH JSON " + usuario.getHash());

    boolean alterado = !(hash.equalsIgnoreCase(usuario.getHash()));
    System.out.println("Alterado: " + alterado);

    if (alterado) {
        throw new Exception("Se han alterado los datos");
    }
    return createUsuario(usuario);
}

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

/**
 *
 *
 * @param keydata/*from  w ww  .  j a v a 2s .c o m*/
 *
 * @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");
    }
}

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From source file:fitmon.WorkoutApi.java

public StringBuilder apiGetInfo()
        throws ClientProtocolException, IOException, NoSuchAlgorithmException, InvalidKeyException {
    HttpClient client = new DefaultHttpClient();
    //HttpGet request = new HttpGet("http://platform.fatsecret.com/rest/server.api&"
    //                    + "oauth_consumer_key=5f2d9f7c250c4d75b9807a4f969363a7&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1408230438&"
    //                     + "oauth_nonce=abc&oauth_version=1.0&method=food.get&food_id=4384");
    //HttpResponse response = client.execute(request);
    //BufferedReader rd = new BufferedReader (new InputStreamReader(response.getEntity().getContent()));
    //StringBuilder sb = new StringBuilder();
    String base = URLEncoder.encode("GET") + "&";
    base += "http%3A%2F%2Fplatform.fatsecret.com%2Frest%2Fserver.api&";

    String params;//  w ww .j  a v a  2  s  .  co  m

    params = "format=json&";
    params += "method=exercises.get&";
    params += "oauth_consumer_key=5f2d9f7c250c4d75b9807a4f969363a7&"; // ur consumer key 
    params += "oauth_nonce=123&";
    params += "oauth_signature_method=HMAC-SHA1&";
    Date date = new java.util.Date();
    Timestamp ts = new Timestamp(date.getTime());
    params += "oauth_timestamp=" + ts.getTime() + "&";
    params += "oauth_version=1.0";
    //params += "search_expression=apple"; 

    String params2 = URLEncoder.encode(params);
    base += params2;
    //System.out.println(base);
    String line = "";

    String secret = "76172de2330a4e55b90cbd2eb44f8c63&";
    Mac sha256_HMAC = Mac.getInstance("HMACSHA1");
    SecretKeySpec secret_key = new SecretKeySpec(secret.getBytes(), "HMACSHA1");
    sha256_HMAC.init(secret_key);
    String hash = Base64.encodeBase64String(sha256_HMAC.doFinal(base.getBytes()));

    //$url = "http://platform.fatsecret.com/rest/server.api?".$params."&oauth_signature=".rawurlencode($sig); 
    HttpGet request = new HttpGet("http://platform.fatsecret.com/rest/server.api?" + params
            + "&oauth_signature=" + URLEncoder.encode(hash));
    HttpResponse response = client.execute(request);
    BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
    StringBuilder sb = new StringBuilder();

    //$url = "http://platform.fatsecret.com/rest/server.api?"+params+"&oauth_signature="+URLEncoder.encode(hash);
    //return url;

    while ((line = rd.readLine()) != null) {
        sb.append(line);
        //System.out.println(line);
    }
    //System.out.println(sb.toString());
    return sb;
}

---

From source file:illab.nabal.util.SecurityHelper.java

/**
 * Get HMACSHA1-encoded OAuth 1.0a signature string.
 * /*from   www.j  a  v  a2s.c  om*/
 * @param secretKey - secret key to encode basestring with
 * @param baseString - signature base string 
 * @return oauthSignature - HMAC-SHA1 encoded signature string
 * @throws Exception
 */
public static String getHmacSha1Signature(String secretKey, String baseString) throws Exception {
    String oauthSignature = null;

    // #################### IMPORTANT ####################
    // the secret key is the concatenated values (each first encoded per Parameter 
    // Encoding) of the Consumer Secret and Token Secret, separated by an '&' character 
    // (ASCII code 38) even if empty.

    if (StringHelper.isAllFull(secretKey, baseString) == true) {
        byte[] keyBytes = secretKey.getBytes(HTTP.UTF_8);
        SecretKey keySpec = new SecretKeySpec(keyBytes, HMAC_SHA1);
        Mac mac = Mac.getInstance(HMAC_SHA1);
        mac.init(keySpec);
        oauthSignature = new String(Base64.encode(mac.doFinal(baseString.getBytes(HTTP.UTF_8)), Base64.DEFAULT),
                HTTP.UTF_8).trim();
    }
    return oauthSignature;
}

---

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);/*from  ww w . j  a va2  s.  com*/
    mac.update(string.getBytes());
    return new Base32().encodeAsString(mac.doFinal(Bytes.toByteArray(value)));
}

---

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);/*  ww  w.  j a v a 2s .c  o m*/
    byte[] data = mac.doFinal(sourceString.getBytes(ENCODING));
    Base64 encoder = new Base64();
    String signature = new String(encoder.encode(data));
    return signature;
}

---

From source file:edu.wfu.inotado.helper.EncryptionHelper.java

public String calculateHMAC(String data, String key) throws java.security.SignatureException {
    String result = "";
    try {// www .j a  v a  2 s.c o m

        if (!StringUtils.isBlank(data) && !StringUtils.isBlank(key)) {
            // get an hmac_sha1 key from the raw key bytes
            SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), HMAC_SHA1_ALGORITHM);

            // get an hmac_sha1 Mac instance and initialize with the signing key
            Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
            mac.init(signingKey);

            // compute the hmac on input data bytes
            byte[] rawHmac = mac.doFinal(data.getBytes());

            // base64-encode the hmac
            result = new String(Base64.encodeBase64(rawHmac));
        } else {
            log.warn("data or key appears to be empty!");
        }
    } catch (Exception e) {
        throw new SignatureException("Failed to generate HMAC : " + e.getMessage());
    }
    return result;
}

---

From source file:com.opentok.test.Helpers.java

private static String signData(String data, String key)
        throws SignatureException, NoSuchAlgorithmException, InvalidKeyException {
    SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), HMAC_SHA1_ALGORITHM);
    Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
    mac.init(signingKey);//from   w w  w. j av  a 2 s .  co  m
    return toHexString(mac.doFinal(data.getBytes()));
}

---

From source file:SecurityUtils.java

/**
 * Converts a source string to its HMAC/SHA-1 value.
 * //w ww . j a  v a2 s .com
 * @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:net.sourceforge.js3tream.util.Access.java

/*******************************************************
 * @throws Exception/*from   ww w. jav a2 s  .  com*/
 ******************************************************/
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));

}

---

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