Examples of javax.crypto.CipherOutputStream

javax.crypto.CipherOutputStream
This class wraps an output stream and a cipher so that {@code write} methodssend the data through the cipher before writing them to the underlying output stream.
The cipher must be initialized for the requested operation before being used by a {@code CipherOutputStream}. For example, if a cipher initialized for encryption is used with a {@code CipherOutputStream}, the {@code CipherOutputStream} tries to encrypt the data writing it out.

                    ciphers = new CipherPair(cipherTransformation);
                }
            } catch (GeneralSecurityException e) {
                throw new IOException(e.getMessage(), e);
            }
            out = new CipherOutputStream(out, ciphers.getEncryptor()) {
                boolean closed;
                public void close() throws IOException {
                    if (!closed) {
                        super.close();
                        closed = true;

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                    ciphers = new CipherPair(cipherTransformation);
                }
            } catch (GeneralSecurityException e) {
                throw new IOException(e.getMessage(), e);
            }
            out = new CipherOutputStream(out, ciphers.getEncryptor()) {
                boolean closed;
                public void close() throws IOException {
                    if (!closed) {
                        super.close();
                        closed = true;

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   */
  public boolean encrypt (InputStream in, OutputStream out){
    byte[] buffer = new byte[bufferSize];
    
    try{
      OutputStream cout = new CipherOutputStream(out, encryptionCipher);
      int bytesRead = 0;
      while((bytesRead = in.read(buffer)) >= 0)
        cout.write(buffer, 0 , bytesRead);
      
      cout.close();
      in.close();
      out.close();
    }catch(Exception e){
      System.out.println("Error at encrypt: "+e);
    }

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        /**
         * {@inheritDoc}
         */
        public OutputStream applyFilter(OutputStream out) throws IOException {
            return new CipherOutputStream(out,
                    encryption.initCipher(number, generation));
        }

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            scKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
            AlgorithmParameterSpec paramSpec = new PBEParameterSpec(k1, 2);
            Cipher cptFile=Cipher.getInstance(scKey.getAlgorithm());
            cptFile.init(Cipher.ENCRYPT_MODE, scKey, paramSpec);
            FileOutputStream fosOut=new FileOutputStream(fleWrite);
            CipherOutputStream cosOut=new CipherOutputStream(fosOut, cptFile);
            writeXML(cosOut);
            cosOut.flush();
            cosOut.close();
            fosOut.flush();
            fosOut.close();
            return true;
        }
        catch(IOException ex)

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            scKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
            AlgorithmParameterSpec paramSpec = new PBEParameterSpec(k1, 2);
            Cipher cptFile=Cipher.getInstance(scKey.getAlgorithm());
            cptFile.init(Cipher.ENCRYPT_MODE, scKey, paramSpec);
            FileOutputStream fosOut=new FileOutputStream(fleWrite);
            CipherOutputStream cosOut=new CipherOutputStream(fosOut, cptFile);
            writeXML(cosOut);
            cosOut.flush();
            cosOut.close();
            fosOut.flush();
            fosOut.close();
            return true;
        }
        catch(IOException ex)

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   */
  public void encrypt(InputStream in, OutputStream out) {
    try {
      // Bytes written to out will be encrypted
      // 写入输出流的字节将会被加密
      out = new CipherOutputStream(out, ecipher);


      // Read in the cleartext bytes and write to out to encrypt
      int numRead = 0;
      while ((numRead = in.read(buf)) >= 0) {
        out.write(buf, 0, numRead);

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                 ecipher = Cipher.getInstance(key.getAlgorithm());
                 ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
             } catch (Exception e) {
               throw new Exception("failed to initialize cipher:"+e.toString());
             }
             os = new CipherOutputStream(os,ecipher);
         }


         if (compress)
             os = new GZIPOutputStream(os);

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         ecipher = Cipher.getInstance(encryptKey.getAlgorithm());
         ecipher.init(Cipher.ENCRYPT_MODE, encryptKey, encryptParamSpec);
       } catch (Exception e) {
         throw new Exception("failed to initialize cipher:"+e.toString());
       }
       os = new CipherOutputStream(os,ecipher);
     }


     if (compress)
       os = new GZIPOutputStream(os);

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  public void encrypt(OutputStream out)
  {
    // CBC requires an initialization vector
    try {
      cipher.init(Cipher.ENCRYPT_MODE, skeySpec, paramSpec);
      out = new CipherOutputStream(out, cipher);


//      String u = new String(userid +" " +password);
      StringBuffer u = new StringBuffer(1024);
      u.append(string);
      for (int i=u.length(); i<128; i++)

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