Example usage for javax.crypto Mac doFinal

Introduction

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

Prototype

public final byte[] doFinal(byte[] input) throws IllegalStateException 

Source Link

Document

Processes the given array of bytes and finishes the MAC operation.

Usage

From source file:com.hubrick.vertx.s3.signature.AWS4SignatureBuilder.java

private static byte[] hmacSha256(final byte[] key, final String value) {
    try {//  w  ww . j  a v  a  2  s  . co m
        final String algorithm = "HmacSHA256";
        final Mac mac = Mac.getInstance(algorithm);
        mac.init(new SecretKeySpec(key, algorithm));
        return mac.doFinal(utf8Bytes(value));
    } catch (Exception e) {
        throw Throwables.propagate(e);
    }
}

---

From source file:flpitu88.web.backend.psicoweb.config.Jwt.java

/**
 * Private method to generate a signature from a key
 *
 * @param input Data to sign//www  .ja  v  a2  s.c o  m
 * @param key Key used for the signature
 * @param method Algorithm
 *
 * @return Signature
 *
 * @throws NoSuchAlgorithmException
 * @throws UnsupportedEncodingException
 * @throws InvalidKeyException
 */
private static byte[] sign(String input, String key, String method)
        throws NoSuchAlgorithmException, UnsupportedEncodingException, InvalidKeyException {
    Mac hmac = Mac.getInstance(method);
    SecretKey secretKey = new SecretKeySpec(key.getBytes(), method);
    hmac.init(secretKey);

    return hmac.doFinal(input.getBytes());
}

---

From source file:Main.java

static byte[] decryptJWE(String jwe, Key privRsaKey) {
    // Log.d("","decryptJWE");

    try {/*from   w ww  .j av a  2  s.co  m*/
        // split jwe string
        StringTokenizer tokens = new StringTokenizer(jwe, ".");
        int count = tokens.countTokens();
        // Log.d("","parts.length: "+count);

        if (count != 5)
            return null;

        String jweProtectedHeader64 = tokens.nextToken();
        String jweEncrypted64 = tokens.nextToken();
        String jweInitVector64 = tokens.nextToken();
        String cryptedBytes64 = tokens.nextToken();
        String auth_tag64 = tokens.nextToken();

        // decrypt cek using private rsa key
        byte[] cek = decryptRsaB64(jweEncrypted64, privRsaKey);

        // check cek result byte array
        if (cek == null || cek.length == 0 || (cek.length % 2) != 0)
            return null;

        int keySize = cek.length / 2;
        Log.d("", "Decryption AES: " + keySize * 8);

        // build aes_key and hmac_key
        byte aes_key[] = new byte[keySize];
        byte hmac_key[] = new byte[keySize];

        System.arraycopy(cek, 0, hmac_key, 0, keySize);
        System.arraycopy(cek, keySize, aes_key, 0, keySize);

        // decode initialization vector
        byte[] iv_key = decodeB64(jweInitVector64);

        Log.d("", "hmac_key: " + bytesToHex(hmac_key));
        Log.d("", "aes_key:  " + bytesToHex(aes_key));
        Log.d("", "iv_key:   " + bytesToHex(iv_key));

        // decrypt content using aes_key and iv_key
        byte[] cryptedBytes = decodeB64(cryptedBytes64);
        Cipher decrypt = Cipher.getInstance("AES/CBC/PKCS5Padding", "SC");
        decrypt.init(Cipher.DECRYPT_MODE, new SecretKeySpec(aes_key, "AES"), new IvParameterSpec(iv_key));
        byte[] decryptedBytes = decrypt.doFinal(cryptedBytes);

        Log.d("", "decryptedBytes:");
        Log.d("", bytesToHex(decryptedBytes));

        // validation verification
        byte[] aad = jweProtectedHeader64.getBytes();
        long al = aad.length * 8;

        // concatenate aad, iv_key, cryptedBytes and al 
        byte[] hmacData = new byte[aad.length + iv_key.length + cryptedBytes.length + 8];
        int offset = 0;
        System.arraycopy(aad, offset, hmacData, 0, aad.length);
        offset += aad.length;
        System.arraycopy(iv_key, 0, hmacData, offset, iv_key.length);
        offset += iv_key.length;
        System.arraycopy(cryptedBytes, 0, hmacData, offset, cryptedBytes.length);
        offset += cryptedBytes.length;
        ByteBuffer buffer = ByteBuffer.allocate(8);
        buffer.putLong(al);
        System.arraycopy(buffer.array(), 0, hmacData, offset, 8);

        // compute hmac
        Mac hmac = Mac.getInstance("HmacSHA256", "SC");
        hmac.init(new SecretKeySpec(hmac_key, "HmacSHA256"));
        byte[] hmacValue = hmac.doFinal(hmacData);

        // pick authentication tag
        byte[] authTag = Arrays.copyOf(hmacValue, 16);

        // validate authentication tag
        byte[] authTagRead = decodeB64(auth_tag64);
        for (int i = 0; i < 16; i++) {
            if (authTag[i] != authTagRead[i]) {
                Log.d("", "validation failed");
                return decryptedBytes;
            }
        }

        Log.d("", "validation success");

        // validation success
        return decryptedBytes;

    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}

---

From source file:main.java.com.amazonaws.cognito.devauthsample.Utilities.java

public static String sign(String content, String key) {
    try {/*from w w  w  . ja  v a2s.  c  o m*/
        byte[] data = content.getBytes(Constants.ENCODING_FORMAT);
        Mac mac = Mac.getInstance(Constants.SIGNATURE_METHOD);
        mac.init(new SecretKeySpec(key.getBytes(Constants.ENCODING_FORMAT), Constants.SIGNATURE_METHOD));
        char[] signature = Hex.encodeHex(mac.doFinal(data));
        return new String(signature);
    } catch (Exception e) {
        log.log(Level.SEVERE, "Exception during sign", e);
    }
    return null;
}

---

From source file:org.jahia.security.TOTP.java

/**
 * This method uses the JCE to provide the crypto algorithm. HMAC computes a
 * Hashed Message Authentication Code with the crypto hash algorithm as a
 * parameter./*  w ww  .  ja  v  a  2s .com*/
 * 
 * @param crypto
 *            : the crypto algorithm (HmacSHA1, HmacSHA256, HmacSHA512)
 * @param keyBytes
 *            : the bytes to use for the HMAC key
 * @param text
 *            : the message or text to be authenticated
 */
private static byte[] hmac_sha(String crypto, byte[] keyBytes, byte[] text) {
    try {
        Mac hmac;
        hmac = Mac.getInstance(crypto);
        SecretKeySpec macKey = new SecretKeySpec(keyBytes, "RAW");
        hmac.init(macKey);
        return hmac.doFinal(text);
    } catch (GeneralSecurityException gse) {
        throw new UndeclaredThrowableException(gse);
    }
}

---

From source file:com.chumbok.aauth.otp.TOTP.java

/**
 * This method uses the JCE to provide the crypto algorithm. HMAC computes a
 * Hashed Message Authentication Code with the crypto hash algorithm as a
 * parameter./*  w w  w .ja  v  a 2s  . co  m*/
 *
 * @param crypto
 *            : the crypto algorithm (HmacSHA1, HmacSHA256, HmacSHA512)
 * @param keyBytes
 *            : the bytes to use for the HMAC key
 * @param text
 *            : the message or text to be authenticated
 */

private static byte[] hmac_sha(String crypto, byte[] keyBytes, byte[] text) {
    try {
        Mac hmac;
        hmac = Mac.getInstance(crypto);
        SecretKeySpec macKey = new SecretKeySpec(keyBytes, "RAW");
        hmac.init(macKey);
        return hmac.doFinal(text);
    } catch (GeneralSecurityException gse) {
        throw new UndeclaredThrowableException(gse);
    }
}

---

From source file:com.cloud.utils.SwiftUtil.java

static String calculateRFC2104HMAC(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  .  jav a 2s  . c  om*/
    return toHexString(mac.doFinal(data.getBytes()));

}

---

From source file:org.apache.http.contrib.auth.AWSScheme.java

/**
 * Computes RFC 2104-compliant HMAC signature.
 *
 * @param data// w  w w.ja v a  2  s .c o m
 *            The data to be signed.
 * @param key
 *            The signing key.
 * @return The Base64-encoded RFC 2104-compliant HMAC signature.
 * @throws RuntimeException
 *             when signature generation fails
 */
private static String calculateRFC2104HMAC(final String data, final String key) throws AuthenticationException {
    try {
        // 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
        return Base64.encodeBase64String(rawHmac);

    } catch (InvalidKeyException ex) {
        throw new AuthenticationException("Failed to generate HMAC: " + ex.getMessage(), ex);
    } catch (NoSuchAlgorithmException ex) {
        throw new AuthenticationException(HMAC_SHA1_ALGORITHM + " algorithm is not supported", ex);
    }
}

---

From source file:com.annuletconsulting.homecommand.node.AsyncSend.java

/**
 * Creates the signature from the timestamp using the sharedKey.  This same method will be used
 * on the server and the results compared to authenticate the request.
 * //from   w  w w  . j a v  a2  s  .co m
 * @param timeStamp
 * @return
 */
private static String getSignature(String timeStamp) {
    if (sharedKey != null)
        try {
            byte[] data = timeStamp.getBytes(ENCODING_FORMAT);
            Mac mac = Mac.getInstance(SIGNATURE_METHOD);
            mac.init(new SecretKeySpec(sharedKey.getBytes(ENCODING_FORMAT), SIGNATURE_METHOD));
            char[] signature = Hex.encodeHex(mac.doFinal(data));
            return new String(signature);
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    return "Error in getSignature()";
}

---

From source file:com.grouptuity.venmo.VenmoSDK.java

private static String hash_hmac(String payload, String app_secret, String algorithm) {
    try {/* w  w w  .java2s  .  com*/
        Mac mac = Mac.getInstance(algorithm);
        SecretKeySpec secret = new SecretKeySpec(app_secret.getBytes(), algorithm);
        mac.init(secret);
        byte[] digest = mac.doFinal(payload.getBytes());
        String enc = new String(digest);
        return enc;
    } catch (Exception e) {
        Log.d("VenmoSDK Error Message Caught", e.getMessage());
        return "";
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• »