Example usage for javax.crypto Mac update

Introduction

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

Prototype

public final void update(byte[] input, int offset, int len) throws IllegalStateException 

Source Link

Document

Processes the first len bytes in input , starting at offset inclusive.

Usage

From source file:Main.java

private static void derivePKCS5S2Helper(Mac hMac, byte[] P, byte[] S, int c, byte[] iBuf, byte[] out,
        int outOff) throws GeneralSecurityException {
    byte[] state = new byte[hMac.getMacLength()];
    SecretKeySpec param = new SecretKeySpec(P, "SHA1");
    hMac.init(param);/*from  w w  w. j  a  va2  s .  c  om*/
    if (S != null) {
        hMac.update(S, 0, S.length);
    }
    hMac.update(iBuf, 0, iBuf.length);
    hMac.doFinal(state, 0);
    System.arraycopy(state, 0, out, outOff, state.length);
    if (c == 0) {
        throw new IllegalArgumentException("iteration count must be at least 1.");
    }
    for (int count = 1; count < c; count++) {
        hMac.init(param);
        hMac.update(state, 0, state.length);
        hMac.doFinal(state, 0);
        for (int j = 0; j != state.length; j++) {
            out[outOff + j] ^= state[j];
        }
    }
}

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From source file:Main.java

public static String getFileMacEncrypt(File file, SecretKey key) throws IOException {
    String algorithm = key.getAlgorithm();
    Mac mac = null;
    try {//from   ww  w. ja  v  a  2s  .c om
        mac = Mac.getInstance(algorithm);
        mac.init(key);
        FileInputStream in = new FileInputStream(file);
        byte[] buffer = new byte[1024 * 1024];
        int len = 0;
        while ((len = in.read(buffer)) > 0) {
            mac.update(buffer, 0, len);
        }
        in.close();
        return bytes2String(mac.doFinal());
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:org.apache.abdera2.common.security.HashHelper.java

public static String hmac(Key key, String alg, byte[] mat) {
    try {//w  ww  .j  av  a 2 s. c  om
        Mac mac = Mac.getInstance(alg);
        mac.init(key);
        mac.update(mat, 0, mat.length);
        byte[] sig = mac.doFinal();
        return Base64.encodeBase64URLSafeString(sig);
    } catch (Throwable t) {
        throw ExceptionHelper.propogate(t);
    }
}

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From source file:org.linkdroid.PostJob.java

private static String hmacSha1(InputStream plainText, String secretString, String nonce)
        throws IOException, InvalidKeyException, NoSuchAlgorithmException {
    Mac mac = initHmacSha1(secretString, nonce);

    // digest the content.
    byte[] bytes = new byte[1024];
    int count;/*from  w ww  . j av  a  2  s .c o  m*/
    while ((count = plainText.read(bytes)) != -1) {
        mac.update(bytes, 0, count);
    }

    // Return the string digest
    return hmacDigestToHexString(mac.doFinal());
}

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From source file:org.glite.slcs.caclient.impl.CMPRequest.java

private static byte[] makeProtection(String secret, int iterCount, String owfAlgId, String macAlgId,
        DEROctetString salt, PKIMessage message) {
    byte[] saltBytes = salt.getOctets();
    byte[] sharedSecret = secret.getBytes();
    byte[] firstKey = new byte[sharedSecret.length + saltBytes.length];
    for (int i = 0; i < sharedSecret.length; i++) {
        firstKey[i] = sharedSecret[i];//  w  w w .java 2  s  .c  om
    }
    for (int i = 0; i < saltBytes.length; i++) {
        firstKey[sharedSecret.length + i] = saltBytes[i];
    }
    // Construct the base key according to rfc4210, section 5.1.3.1
    MessageDigest dig = null;
    Mac mac = null;
    try {
        dig = MessageDigest.getInstance(owfAlgId, "BC");
        for (int i = 0; i < iterCount; i++) {
            firstKey = dig.digest(firstKey);
            dig.reset();
        }
        mac = Mac.getInstance(macAlgId, "BC");
        SecretKey key = new SecretKeySpec(firstKey, macAlgId);
        mac.init(key);
    } catch (Exception e) {
        log.error("Error while calculating PKIMessage protection", e);
    }
    mac.reset();
    byte[] protectedBytes = message.getProtectedBytes();
    mac.update(protectedBytes, 0, protectedBytes.length);
    return mac.doFinal();
}

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From source file:org.ejbca.core.protocol.cmp.CmpMessageHelper.java

public static byte[] protectPKIMessageWithPBE(PKIMessage msg, String keyId, String raSecret, String digestAlgId,
        String macAlgId, int iterationCount)
        throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeyException {
    if (LOG.isTraceEnabled()) {
        LOG.trace(">protectPKIMessageWithPBE()");
    }//from w  ww  .  j  a  v a  2  s  .c o  m
    // Create the PasswordBased protection of the message
    PKIHeaderBuilder head = getHeaderBuilder(msg.getHeader());
    byte[] keyIdBytes;
    try {
        keyIdBytes = keyId.getBytes("UTF-8");
    } catch (UnsupportedEncodingException e) {
        keyIdBytes = keyId.getBytes();
        LOG.info("UTF-8 not available, using platform default encoding for keyIdBytes.");
    }
    head.setSenderKID(new DEROctetString(keyIdBytes));
    // SHA1
    AlgorithmIdentifier owfAlg = new AlgorithmIdentifier(digestAlgId);
    // iterations, usually something like 1024
    ASN1Integer iteration = new ASN1Integer(iterationCount);
    // HMAC/SHA1
    AlgorithmIdentifier macAlg = new AlgorithmIdentifier(macAlgId);
    // We need some random bytes for the nonce
    byte[] saltbytes = createSenderNonce();
    DEROctetString derSalt = new DEROctetString(saltbytes);

    // Create the new protected return message
    //String objectId = "1.2.840.113533.7.66.13" = passwordBasedMac;
    String objectId = CMPObjectIdentifiers.passwordBasedMac.getId();
    PBMParameter pp = new PBMParameter(derSalt, owfAlg, iteration, macAlg);
    AlgorithmIdentifier pAlg = new AlgorithmIdentifier(new ASN1ObjectIdentifier(objectId), pp);
    head.setProtectionAlg(pAlg);

    // Calculate the protection bits
    byte[] rasecret = raSecret.getBytes();
    byte[] basekey = new byte[rasecret.length + saltbytes.length];
    System.arraycopy(rasecret, 0, basekey, 0, rasecret.length);
    System.arraycopy(saltbytes, 0, basekey, rasecret.length, saltbytes.length);
    // Construct the base key according to rfc4210, section 5.1.3.1
    MessageDigest dig = MessageDigest.getInstance(owfAlg.getAlgorithm().getId(), "BC");
    for (int i = 0; i < iterationCount; i++) {
        basekey = dig.digest(basekey);
        dig.reset();
    }

    PKIHeader pkiHeader = head.build();
    // Do the mac
    String macOid = macAlg.getAlgorithm().getId();
    byte[] protectedBytes = CmpMessageHelper.getProtectedBytes(pkiHeader, msg.getBody()); //ret.getProtectedBytes();
    Mac mac = Mac.getInstance(macOid, "BC");
    SecretKey key = new SecretKeySpec(basekey, macOid);
    mac.init(key);
    mac.reset();
    mac.update(protectedBytes, 0, protectedBytes.length);
    byte[] out = mac.doFinal();
    DERBitString bs = new DERBitString(out);

    if (LOG.isTraceEnabled()) {
        LOG.trace("<protectPKIMessageWithPBE()");
    }
    // Return response as byte array 
    return CmpMessageHelper
            .pkiMessageToByteArray(new PKIMessage(pkiHeader, msg.getBody(), bs, msg.getExtraCerts()));
}

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From source file:com.google.gwtjsonrpc.server.SignedToken.java

private void computeToken(final byte[] buf, final String text) throws XsrfException {
    final Mac m = newMac();
    m.update(buf, 0, 2 * INT_SZ);
    m.update(toBytes(text));//from   w ww  .ja v a  2s . c o m
    try {
        m.doFinal(buf, 2 * INT_SZ);
    } catch (ShortBufferException e) {
        throw new XsrfException("Unexpected token overflow", e);
    }
}

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From source file:org.rapla.rest.server.token.SignedToken.java

private void computeToken(final byte[] buf, final String text) throws TokenInvalidException {
    final Mac m = newMac();
    m.update(buf, 0, 2 * INT_SZ);
    m.update(toBytes(text));//from  www.  ja  v  a2 s  .c  o  m
    try {
        m.doFinal(buf, 2 * INT_SZ);
    } catch (ShortBufferException e) {
        throw new TokenInvalidException("Unexpected token overflow", e);
    }
}

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From source file:org.ejbca.core.protocol.cmp.CmpPbeVerifyer.java

public boolean verify(String raAuthenticationSecret)
        throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException {
    lastUsedRaSecret = raAuthenticationSecret;
    boolean ret = false;
    // Verify the PasswordBased protection of the message
    if (!pAlg.getAlgorithm().equals(CMPObjectIdentifiers.passwordBasedMac)) {
        errMsg = INTRES.getLocalizedMessage("cmp.errorunknownprotalg", pAlg.getAlgorithm().getId());
        LOG.error(errMsg);/*from   w  w  w.ja  v  a2s . c o m*/
        return ret;
    } else {
        if (iterationCount > 10000) {
            LOG.info("Received message with too many iterations in PBE protection: " + iterationCount);
            throw new InvalidKeyException("Iteration count can not exceed 10000");
        }
        byte[] raSecret = raAuthenticationSecret.getBytes();
        byte[] basekey = new byte[raSecret.length + salt.length];
        System.arraycopy(raSecret, 0, basekey, 0, raSecret.length);
        System.arraycopy(salt, 0, basekey, raSecret.length, salt.length);
        // Construct the base key according to rfc4210, section 5.1.3.1
        MessageDigest dig = MessageDigest.getInstance(owfOid, "BC");
        for (int i = 0; i < iterationCount; i++) {
            basekey = dig.digest(basekey);
            dig.reset();
        }
        // HMAC/SHA1 is normal 1.3.6.1.5.5.8.1.2 or 1.2.840.113549.2.7 
        Mac mac = Mac.getInstance(macOid, "BC");
        SecretKey key = new SecretKeySpec(basekey, macOid);
        mac.init(key);
        mac.reset();
        mac.update(protectedBytes, 0, protectedBytes.length);
        byte[] out = mac.doFinal();
        // My out should now be the same as the protection bits
        byte[] pb = protection.getBytes();
        ret = Arrays.equals(out, pb);
    }
    return ret;
}

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From source file:org.alfresco.encryption.MACUtils.java

public byte[] generateMAC(String keyAlias, MACInput macInput) {
    try {//from  www  . j  a  va  2  s. c om
        InputStream fullMessage = macInput.getMACInput();

        if (logger.isDebugEnabled()) {
            logger.debug("Generating MAC for " + macInput + "...");
        }

        Mac mac = getMac(keyAlias);

        byte[] buf = new byte[1024];
        int len;
        while ((len = fullMessage.read(buf, 0, 1024)) != -1) {
            mac.update(buf, 0, len);
        }
        byte[] newMAC = mac.doFinal();

        if (logger.isDebugEnabled()) {
            logger.debug("...done. MAC is " + Arrays.toString(newMAC));
        }

        return newMAC;
    } catch (Exception e) {
        throw new AlfrescoRuntimeException("Failed to generate MAC", e);
    }
}

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