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:br.com.ingenieux.jenkins.plugins.codecommit.RequestSignerBase.java

protected byte[] hash(byte[] kSecret, String obj) {
    try {/* www  .j  a  va  2s.c o m*/
        SecretKeySpec keySpec = new SecretKeySpec(kSecret, "HmacSHA256");

        Mac mac = Mac.getInstance("HmacSHA256");

        mac.init(keySpec);

        return mac.doFinal(obj.getBytes(DEFAULT_CHARSET));
    } catch (Exception exc) {
        throw new RuntimeException(exc);
    }
}

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From source file:com.cilogi.aws.cart.SignRequests.java

SignRequests(@NonNull EndPoint endpoint, @NonNull String awsAccessKeyId, @NonNull String awsSecretKey)
        throws UnsupportedEncodingException, NoSuchAlgorithmException, InvalidKeyException {
    this.endpoint = endpoint;
    this.awsAccessKeyId = awsAccessKeyId;

    byte[] secretKeyBytes = awsSecretKey.getBytes(UTF8);
    SecretKeySpec secretKeySpec = new SecretKeySpec(secretKeyBytes, HMAC_NAME);
    this.mac = Mac.getInstance(HMAC_NAME);
    this.mac.init(secretKeySpec);
}

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From source file:com.torchmind.authenticator.AbstractTokenGenerator.java

/**
 * Generates a code based on a secret key and challenge.
 *
 * @param secretKey a secret key.//from   w w  w.  ja  v  a2  s  .  c o m
 * @param challenge a challenge.
 * @return a code.
 */
@NonNull
protected String generateCode(@NonNull SecretKey secretKey, @NonNull byte[] challenge) {
    try {
        Mac mac = Mac.getInstance("Hmac" + this.algorithm.name());
        mac.init(secretKey);

        byte[] hash = mac.doFinal(challenge);
        int offset = hash[hash.length - 1] & 0x0F;

        ByteBuffer buffer = ByteBuffer.allocate(4).put(hash, offset, 4);
        buffer.flip();

        return String.format("%0" + this.digits + "d", (buffer.getInt() & 0x7FFFFFFF) % this.digitModulo);
    } catch (NoSuchAlgorithmException ex) {
        throw new UnsupportedOperationException(
                "The specified algorithm is not supported by this Java VM implementation: " + ex.getMessage(),
                ex);
    } catch (InvalidKeyException ex) {
        throw new IllegalArgumentException("Invalid shared secret: " + ex.getMessage(), ex);
    }
}

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From source file:org.brunocvcunha.instagram4j.util.InstagramHashUtil.java

/**
 * Generate a Hmac SHA-256 hash/* w  w  w.j a va  2s .c  o  m*/
 * @param key key
 * @param string value
 * @return hashed
 */
public static String generateHash(String key, String string) {
    SecretKeySpec object = new SecretKeySpec(key.getBytes(), "HmacSHA256");
    try {
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init((Key) object);
        byte[] byteArray = mac.doFinal(string.getBytes("UTF-8"));
        return new String(new Hex().encode(byteArray), "ISO-8859-1");
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:com.swdouglass.joid.Crypto.java

private static byte[] hmacShaX(String keySpec, byte[] key, byte[] text)
        throws InvalidKeyException, NoSuchAlgorithmException {
    SecretKey sk = new SecretKeySpec(key, keySpec);
    Mac m = Mac.getInstance(sk.getAlgorithm());
    m.init(sk);//from  www . j a v a  2s .c  om
    return m.doFinal(text);
}

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From source file:jp.co.yahoo.yconnect.core.oidc.JWTVerification.java

/**
 * HMAC-SHA256????????????//  ww  w  .  ja v  a 2  s.c  om
 * 
 * @return ?????
 */
private String generateSignature() {
    // mac???
    Mac sha256_HMAC = null;
    try {
        sha256_HMAC = Mac.getInstance("HmacSHA256");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    // secret_key??
    SecretKeySpec secret_key = null;
    try {
        secret_key = new SecretKeySpec(this.clientSecret.getBytes("UTF-8"), "HmacSHA256");
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    // mac??
    try {
        sha256_HMAC.init(secret_key);
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }

    String[] idTokenArray = this.idTokenString.split("\\.");
    this.dataPart = idTokenArray[0] + "." + idTokenArray[1];

    String hash = null;
    try {
        hash = Base64.encodeBase64String(sha256_HMAC.doFinal(this.dataPart.getBytes("UTF-8")));
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    // URLSafe?Base64??
    hash = hash.replace("=", "");
    hash = hash.replace("+", "-");
    hash = hash.replace("/", "_");

    return hash;
}

---

From source file:ch.icclab.cyclops.client.CloudStackAuth.java

/**
 * Simple SHA1 implementation with Base64 encoding of message
 *
 * @param query header to be signed//from   w w w .j  a  v  a 2s  .c o  m
 * @return signed string
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeyException
 * @throws UnsupportedEncodingException
 */
private String signRequest(String query)
        throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException {
    logger.trace("Signing the CloudStack API query");

    Mac sha1_HMAC = Mac.getInstance("HmacSHA1");
    SecretKeySpec secret = new SecretKeySpec(apiConnection.getCloudStackSecretKey().getBytes(), "HmacSHA1");
    sha1_HMAC.init(secret);

    // now sign it and return Base64 representation
    String signature = Base64.encodeBase64String(sha1_HMAC.doFinal(query.getBytes()));

    return URLEncoder.encode(signature, "UTF-8");
}

---

From source file:com.tapcentive.minimalist.JWTHelper.java

/***
 * Generates a JSON Web Token. This token uses the supplied application key to sign the token
 * content which should uniquely identify the client's customer (e.g. a loyalty number, email
 * etc.) and contain any Tapcentive audience IDs assigned to this customer. This example does
 * not require that either parameter be present.
 * @param originalBody/*from w  w w. j a  va  2 s  .  com*/
 * @param audiences
 * @param customerId
 * @return
 */
public String createJWT(JSONObject originalBody, List<String> audiences, String customerId) {

    try {
        JSONObject header = new JSONObject();
        JSONObject body = new JSONObject(originalBody.toString());
        header.put("typ", "JWT");
        header.put("alg", "HS256");
        body.put("iss", _keyid);

        if ((audiences != null) && (audiences.size() > 0)) {
            JSONArray attrArray = new JSONArray(audiences);
            body.put("audiences", attrArray);
        }

        if (customerId != null) {
            body.put("customer_xid", customerId);
        }

        String signedContent = Base64.encodeToString(header.toString().getBytes("UTF-8"), Base64.NO_WRAP) + "."
                + Base64.encodeToString(body.toString().getBytes("UTF-8"), Base64.NO_WRAP);
        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(_key.getBytes("UTF-8"), "HmacSHA256");
        sha256_HMAC.init(secret_key);
        String signature = Base64.encodeToString(sha256_HMAC.doFinal(signedContent.getBytes("UTF-8")),
                Base64.NO_WRAP);
        return signedContent + "." + signature;
    } catch (JSONException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:org.apache.hadoop.hive.ql.exec.tez.HivePreWarmProcessor.java

@Override
public void run(Map<String, LogicalInput> inputs, Map<String, LogicalOutput> outputs) throws Exception {
    if (prewarmed) {
        /* container reuse */
        return;/*w w w.j a v  a2s  .  co  m*/
    }
    for (LogicalInput input : inputs.values()) {
        input.start();
    }
    for (LogicalOutput output : outputs.values()) {
        output.start();
    }
    /* these are things that goes through singleton initialization on most queries */
    FileSystem fs = FileSystem.get(conf);
    Mac mac = Mac.getInstance("HmacSHA1");
    ReadaheadPool rpool = ReadaheadPool.getInstance();
    ShimLoader.getHadoopShims();

    URL hiveurl = new URL("jar:" + DagUtils.getInstance().getExecJarPathLocal() + "!/");
    JarURLConnection hiveconn = (JarURLConnection) hiveurl.openConnection();
    JarFile hivejar = hiveconn.getJarFile();
    try {
        Enumeration<JarEntry> classes = hivejar.entries();
        while (classes.hasMoreElements()) {
            JarEntry je = classes.nextElement();
            if (je.getName().endsWith(".class")) {
                String klass = je.getName().replace(".class", "").replaceAll("/", "\\.");
                if (klass.indexOf("ql.exec") != -1 || klass.indexOf("ql.io") != -1) {
                    /* several hive classes depend on the metastore APIs, which is not included
                     * in hive-exec.jar. These are the relatively safe ones - operators & io classes.
                     */
                    if (klass.indexOf("vector") != -1 || klass.indexOf("Operator") != -1) {
                        JavaUtils.loadClass(klass);
                    }
                }
            }
        }
    } finally {
        hivejar.close();
    }
    prewarmed = true;
}

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From source file:amazon.SignedRequestsHelper.java

/**
 * You must provide the three values below to initialize the helper.
 *  //w  ww .j  a va2 s .  c  o m
 * @param endpoint          Destination for the requests.
 * @param awsAccessKeyId    Your AWS Access Key ID
 * @param awsSecretKey      Your AWS Secret Key
 */
public static SignedRequestsHelper getInstance(String endpoint, String awsAccessKeyId, String awsSecretKey)
        throws IllegalArgumentException, UnsupportedEncodingException, NoSuchAlgorithmException,
        InvalidKeyException {
    if (null == endpoint || endpoint.length() == 0) {
        throw new IllegalArgumentException("endpoint is null or empty");
    }
    if (null == awsAccessKeyId || awsAccessKeyId.length() == 0) {
        throw new IllegalArgumentException("awsAccessKeyId is null or empty");
    }
    if (null == awsSecretKey || awsSecretKey.length() == 0) {
        throw new IllegalArgumentException("awsSecretKey is null or empty");
    }

    SignedRequestsHelper instance = new SignedRequestsHelper();
    instance.endpoint = endpoint.toLowerCase();
    instance.awsAccessKeyId = awsAccessKeyId;
    instance.awsSecretKey = awsSecretKey;

    byte[] secretyKeyBytes = instance.awsSecretKey.getBytes(UTF8_CHARSET);
    instance.secretKeySpec = new SecretKeySpec(secretyKeyBytes, HMAC_SHA256_ALGORITHM);
    instance.mac = Mac.getInstance(HMAC_SHA256_ALGORITHM);
    instance.mac.init(instance.secretKeySpec);

    return instance;
}

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