Examples of javax.crypto.Mac.update()

javax.crypto.Mac.update()
Updates this {@code Mac} instance with the specified byte. @param input the byte @throws IllegalStateException if this MAC is not initialized.

            return;
        }


        mac.reset();


        mac.update(message, 0, message.length);


        out = mac.doFinal();


        if (!Arrays.areEqual(out, output))
        {

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        {
            Mac mac = Mac.getInstance(name);


            mac.init(new SecretKeySpec(new byte[mac.getMacLength()], mac.getAlgorithm()), new IvParameterSpec(
                new byte[16]));
            mac.update(new byte[128]);
            byte[] bytes = mac.doFinal();


            if (!Arrays.areEqual(bytes, Hex.decode(macOutput)))
            {
                fail("wrong mac value computed for " + name);

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            //EtM Composition Approach
            int macLenght = mac.getMacLength();
            byte[] secure = new byte[cipher.getOutputSize(insecure.length)+ macLenght];
            int secureCount = cipher.doFinal(insecure,0,insecure.length,secure);
            mac.update(secure, 0, secureCount);
            mac.doFinal(secure, secureCount);
                        
            return secure;
        }
        catch (Exception e)

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                log.debug("decrypting w/ " + algorithm + "/" + algorithmParams);
            }


            //EtM Composition Approach
            int macLenght = mac.getMacLength();
            mac.update(secure, 0, secure.length-macLenght);
            byte[] signedDigestHash = mac.doFinal();


            boolean isMacEqual = true;
            for (int i = 0; i < signedDigestHash.length; i++)
            {

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        if (mac == null) {
            AppXrw.logger.warning("Rejected message from " + slaveID + 
                                  ".  MAC not found.");
            return false;
        }
        mac.update(message, 0, message.length - 20);


        // copy the signature into its own array for processing
        byte[] signature = new byte[20];
        System.arraycopy(message, message.length - 20, signature, 0, 20);

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        }


        try {
            Mac mac = Mac.getInstance(algorithm);
            mac.init(key);
            mac.update(bytes);


            return mac.doFinal();
        } catch (NoSuchAlgorithmException e) {
        } catch (InvalidKeyException e) {
        }

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        }


        try {
            Mac mac = Mac.getInstance(algorithm);
            mac.init(key);
            mac.update(bytes);


            return mac.doFinal();
        } catch (NoSuchAlgorithmException e) {
        } catch (InvalidKeyException e) {
        }

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            n >>>= 8;
        }


        Mac mac = Mac.getInstance(algorithm);
        mac.init(key);
        mac.update(bytes);


        return mac.doFinal();
    }


    private static class Context {

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        }


        try {
            Mac mac = Mac.getInstance(algorithm);
            mac.init(key);
            mac.update(bytes);


            return mac.doFinal();
        } catch (NoSuchAlgorithmException e) {
        } catch (InvalidKeyException e) {
        }

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    // VoS message is url path + 'null character' + request. Ex: "/info/account\000nonce=1234567890"
    String message = "/" + restInvocation.getPath() + "\000" + restInvocation.getRequestBody();


    Mac mac = getMac();
    mac.update(message.getBytes());


    return Base64.encodeBytes((String.format("%064x", new BigInteger(1, mac.doFinal())).getBytes()));
  }
}

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