Example usage for javax.crypto Cipher update

Introduction

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

Prototype

public final int update(byte[] input, int inputOffset, int inputLen, byte[] output)
        throws ShortBufferException 

Source Link

Document

Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part.

Usage

From source file:DataStudioCrak.java

public static void main(String[] args) {
    String company = "labthink";
    byte[] companyByteArray = company.getBytes();
    byte[] companyByteIntArray = intToByteArray(compute(companyByteArray, companyByteArray.length));
    // byte[] ff = "zhulixia".getBytes();
    byte[] snByte = new byte[32];
    byte[] byte1 = new byte[] { 7, 1 };
    byte[] byte2 = "zhaodapengpojiehahahahahaha".getBytes();
    byte[] byte3 = new byte[] { 127 };
    byte[] snMain = new byte[24];
    System.arraycopy(byte1, 0, snMain, 0, 2);
    System.arraycopy(byte2, 0, snMain, 2, 17);
    System.arraycopy(companyByteIntArray, 0, snMain, 19, 4);
    System.arraycopy(byte3, 0, snMain, 23, 1);
    //  1 - single license,2 - site license ,3 educational license
    snMain[2] = (byte) 1;
    int intSn = compute(snMain, snMain.length);
    System.out.println("intSn=" + intSn);
    byte[] key1 = "dddd".getBytes();
    byte[] key2 = intToByteArray(intSn);
    byte[] key = new byte[8];
    System.arraycopy(key1, 0, key, 0, 4);
    System.arraycopy(key2, 0, key, 4, 4);

    byte encodedSnMain[] = new byte[snMain.length];
    try {//from   ww  w.  jav  a 2s  . c  o m
        DESKeySpec deskeyspec = new DESKeySpec(key);
        javax.crypto.SecretKey secretkey = SecretKeyFactory.getInstance("DES").generateSecret(deskeyspec);
        Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
        cipher.init(Cipher.ENCRYPT_MODE, secretkey);
        cipher.update(snMain, 0, snMain.length, encodedSnMain);
        cipher.doFinal();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    System.arraycopy(key1, 0, snByte, 0, 4);
    System.arraycopy(key2, 0, snByte, 28, 4);
    System.arraycopy(encodedSnMain, 0, snByte, 4, 24);
    char[] snCharArray = Hex.encodeHex(snByte);
    String sn = new String(snCharArray);
    System.out.println("sn=" + sn);
}

---

From source file:net.labthink.run.DataStudioCrak.java

public static void main(String[] args) {
    String company = "Labthink";
    byte[] companyByteArray = company.getBytes();
    byte[] companyByteIntArray = intToByteArray(compute(companyByteArray, companyByteArray.length));
    // byte[] ff = "zhulixia".getBytes();
    byte[] snByte = new byte[32];
    byte[] byte1 = new byte[] { 7, 1 };
    byte[] byte2 = "zhaodapengpojiehahahahahaha".getBytes();
    byte[] byte3 = new byte[] { 127 };
    byte[] snMain = new byte[24];
    System.arraycopy(byte1, 0, snMain, 0, 2);
    System.arraycopy(byte2, 0, snMain, 2, 17);
    System.arraycopy(companyByteIntArray, 0, snMain, 19, 4);
    System.arraycopy(byte3, 0, snMain, 23, 1);
    //  1 - single license,2 - site license ,3 educational license
    snMain[2] = (byte) 1;
    int intSn = compute(snMain, snMain.length);
    System.out.println("intSn=" + intSn);
    byte[] key1 = "dddd".getBytes();
    byte[] key2 = intToByteArray(intSn);
    byte[] key = new byte[8];
    System.arraycopy(key1, 0, key, 0, 4);
    System.arraycopy(key2, 0, key, 4, 4);

    byte encodedSnMain[] = new byte[snMain.length];
    try {//from   ww  w  .  ja v a2 s.c o m
        DESKeySpec deskeyspec = new DESKeySpec(key);
        javax.crypto.SecretKey secretkey = SecretKeyFactory.getInstance("DES").generateSecret(deskeyspec);
        Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
        cipher.init(Cipher.ENCRYPT_MODE, secretkey);
        cipher.update(snMain, 0, snMain.length, encodedSnMain);
        cipher.doFinal();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    System.arraycopy(key1, 0, snByte, 0, 4);
    System.arraycopy(key2, 0, snByte, 28, 4);
    System.arraycopy(encodedSnMain, 0, snByte, 4, 24);
    char[] snCharArray = Hex.encodeHex(snByte);
    String sn = new String(snCharArray);
    System.out.println("sn=" + sn);
}

---

From source file:AESTest.java

/**
 * Uses a cipher to transform the bytes in an input stream and sends the transformed bytes to an
 * output stream./*from   w  ww .  j  a  va  2 s . c om*/
 * @param in the input stream
 * @param out the output stream
 * @param cipher the cipher that transforms the bytes
 */
public static void crypt(InputStream in, OutputStream out, Cipher cipher)
        throws IOException, GeneralSecurityException {
    int blockSize = cipher.getBlockSize();
    int outputSize = cipher.getOutputSize(blockSize);
    byte[] inBytes = new byte[blockSize];
    byte[] outBytes = new byte[outputSize];

    int inLength = 0;
    boolean more = true;
    while (more) {
        inLength = in.read(inBytes);
        if (inLength == blockSize) {
            int outLength = cipher.update(inBytes, 0, blockSize, outBytes);
            out.write(outBytes, 0, outLength);
        } else
            more = false;
    }
    if (inLength > 0)
        outBytes = cipher.doFinal(inBytes, 0, inLength);
    else
        outBytes = cipher.doFinal();
    out.write(outBytes);
}

---

From source file:RSATest.java

/**
 * Uses a cipher to transform the bytes in an input stream and sends the transformed bytes to an
 * output stream.//  w w w  .j a  v a 2s .com
 * @param in the input stream
 * @param out the output stream
 * @param cipher the cipher that transforms the bytes
 */
public static void crypt(InputStream in, OutputStream out, Cipher cipher)
        throws IOException, GeneralSecurityException {
    int blockSize = cipher.getBlockSize();
    int outputSize = cipher.getOutputSize(blockSize);
    byte[] inBytes = new byte[blockSize];
    byte[] outBytes = new byte[outputSize];

    int inLength = 0;
    ;
    boolean more = true;
    while (more) {
        inLength = in.read(inBytes);
        if (inLength == blockSize) {
            int outLength = cipher.update(inBytes, 0, blockSize, outBytes);
            out.write(outBytes, 0, outLength);
        } else
            more = false;
    }
    if (inLength > 0)
        outBytes = cipher.doFinal(inBytes, 0, inLength);
    else
        outBytes = cipher.doFinal();
    out.write(outBytes);
}

---

From source file:ai.serotonin.backup.Base.java

void cipherizeFile(final File inFile, final File outFile, final Cipher cipher) throws Exception {
    try (final FileInputStream fis = new FileInputStream(inFile);
            final FileOutputStream fos = new FileOutputStream(outFile)) {
        final byte[] inbuf = new byte[1028];
        final byte[] outbuf = new byte[2056];
        int readCount, encCount;
        while ((readCount = fis.read(inbuf)) != -1) {
            encCount = cipher.update(inbuf, 0, readCount, outbuf);
            fos.write(outbuf, 0, encCount);
        }//from  w  w w.  ja va  2  s. c  om

        encCount = cipher.doFinal(inbuf, 0, 0, outbuf);
        fos.write(outbuf, 0, encCount);
    }
}

---

From source file:org.auscope.portal.server.web.controllers.GridLoginController.java

/**
 * Uses a cipher to decrypt data from an input stream.
 *///from w  w  w. ja  va 2s. co m
private String decryptString(InputStream in, Cipher cipher) throws GeneralSecurityException, IOException {
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    int blockSize = cipher.getBlockSize();
    int outputSize = cipher.getOutputSize(blockSize);
    byte[] inBlock = new byte[blockSize];
    byte[] outBlock = new byte[outputSize];
    int bytesRead;
    do {
        bytesRead = in.read(inBlock);
        if (bytesRead == blockSize) {
            int len = cipher.update(inBlock, 0, blockSize, outBlock);
            output.write(outBlock, 0, len);
        }
    } while (bytesRead == blockSize);

    if (bytesRead > 0) {
        outBlock = cipher.doFinal(inBlock, 0, bytesRead);
    } else {
        outBlock = cipher.doFinal();
    }
    output.write(outBlock);
    return output.toString();
}

---

From source file:com.slamd.admin.AdminServlet.java

/**
 * Generates page content based on an MD5-digest of the query string.
 *
 * @param  requestInfo   The state information for this request.
 * @param  digestString  The base64-encoded MD5 digest of the query string to
 *                       use to generate the page.
 *//* w ww. j av a  2 s  . c o  m*/
static void generatePageFromMD5(RequestInfo requestInfo, String digestString) {
    try {
        String dataFile = Constants.MD5_CONTENT_BASE_PATH + '/' + digestString;
        InputStream inputStream = slamdServer.getClass().getClassLoader().getResourceAsStream(dataFile);

        byte[] salt = { 0, 0, 0, 0, 0, 0, 0, 0 };
        char[] queryChars = requestInfo.request.getQueryString().toCharArray();
        int iterations = 1000;
        String cipherName = "PBEWithMD5AndDES";
        StringBuilder htmlBody = requestInfo.htmlBody;

        AlgorithmParameters algorithmParams = AlgorithmParameters.getInstance(cipherName);
        algorithmParams.init(new PBEParameterSpec(salt, iterations));
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(cipherName);
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(queryChars));
        Cipher cipher = Cipher.getInstance(cipherName);
        cipher.init(Cipher.DECRYPT_MODE, key, algorithmParams);

        int bytesIn;
        int bytesOut;
        byte[] inBuffer = new byte[4096];
        byte[] outBuffer = new byte[8192];
        while ((bytesIn = inputStream.read(inBuffer)) > 0) {
            bytesOut = cipher.update(inBuffer, 0, bytesIn, outBuffer);
            htmlBody.append(new String(outBuffer, 0, bytesOut));
        }

        htmlBody.append(new String(cipher.doFinal()));
        inputStream.close();
    } catch (Exception e) {
        requestInfo.htmlBody.append(JobClass.stackTraceToString(e));
    }
}

---