Examples of org.syncany.chunk.CipherTransformer

org.syncany.chunk.CipherTransformer
The CipherTransformer can be used to encrypt/decrypt files (typically {@link MultiChunk}s) using the {@link MultiCipherOutputStream} and{@link MultiCipherInputStream}. A CipherTransformer requires a list of {@link CipherSpec}s and the master key. It can be instantiated using a property list (from a config file) or by passing the dependencies to the constructor. @author Philipp C. Heckel

      + "    </databaseVersion>\n"
      + "  </databaseVersions>\n"
      + "</database>";
    
    
    Transformer cipherTransformer = new CipherTransformer(cipherSuites, masterKey);
    
    // Test encrypt
    byte[] encryptedData = doEncrypt(StringUtil.toBytesUTF8(xmlStr), cipherTransformer);


    // Test decrypt with SAX parser  
    InputStream is = cipherTransformer.createInputStream(new ByteArrayInputStream(encryptedData));
    
    SAXParserFactory factory = SAXParserFactory.newInstance();
    SAXParser saxParser = factory.newSAXParser();
    
    saxParser.parse(is, new DefaultHandler());

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    // See http://bouncy-castle.1462172.n4.nabble.com/Using-AES-GCM-NoPadding-with-javax-crypto-CipherInputStream-td4655271.html
    // and http://bouncy-castle.1462172.n4.nabble.com/using-GCMBlockCipher-with-CipherInputStream-td4655147.html
  }  
  
  private void doTestEncryption(List<CipherSpec> cipherSpecs) throws InvalidKeySpecException, NoSuchAlgorithmException, IOException, CipherException, InvalidKeyException {
    Transformer encryptCipherTransformer = new CipherTransformer(cipherSpecs, masterKey);
    Transformer decryptCipherTransformer = new CipherTransformer(cipherSpecs, masterKey);
    
    // Prepare data
    byte[] srcData = new byte[10*1024];
    
    for (int i=0;i<srcData.length; i++) {

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    List<Transformer> transformerChains = new LinkedList<Transformer>();


    transformerChains.add(new NoTransformer());
    transformerChains.add(new GzipTransformer());
    transformerChains.add(new CipherTransformer(cipherSpecs, masterKey));
    transformerChains.add(new GzipTransformer(new CipherTransformer(cipherSpecs, masterKey)));


    for (MultiChunker multiChunker : multiChunkers) {
      for (Transformer transformer : transformerChains) {
        for (Chunker chunker : chunkers) {
          String configName = multiChunker + "/" + chunker + "/" + transformer;

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Related Classes of org.syncany.chunk.CipherTransformer

org.syncany.crypto.CipherSession

org.syncany.crypto.CipherSpec

org.syncany.crypto.MultiCipherInputStream

org.syncany.crypto.MultiCipherOutputStream

org.syncany.crypto.SaltedSecretKey

org.syncany.tests.chunk.FrameworkCombinationTest

org.syncany.tests.crypto.MultiCipherStreamsTest

javax.crypto.spec.SecretKeySpec

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