Examples with CipherTransformer org.syncany.chunk.CipherTransformer used on opensource projects

Example 1 with CipherTransformer

use of org.syncany.chunk.CipherTransformer in project syncany by syncany.

the class FrameworkCombinationTest method fillCombinations.

private void fillCombinations() throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException {
    // MultiChunks
    List<MultiChunker> multiChunkers = new LinkedList<MultiChunker>();
    int[] multiChunkSizes = new int[] { 250000, 500000 };
    for (int i = 0; i < multiChunkSizes.length; i++) {
        //multiChunkers.add(new CustomMultiChunker(multiChunkSizes[i]));
        multiChunkers.add(new ZipMultiChunker(multiChunkSizes[i]));
    }
    // Chunks
    List<Chunker> chunkers = new LinkedList<Chunker>();
    int[] chunkSizes = new int[] { 8000, 16000 };
    String[] digestAlgs = new String[] { /*"MD5" ,*/
    "SHA1" };
    String[] fingerprinters = new String[] { "Adler32" };
    for (int i = 0; i < chunkSizes.length; i++) {
        for (int j = 0; j < digestAlgs.length; j++) {
            for (int k = 0; k < fingerprinters.length; k++) {
                chunkers.add(new TttdChunker(chunkSizes[i], TttdChunker.DEFAULT_WINDOW_SIZE, digestAlgs[j], fingerprinters[k]));
            }
        }
    }
    // Compression/Encryption
    List<CipherSpec> cipherSpecs = new ArrayList<CipherSpec>();
    cipherSpecs.add(CipherSpecs.getCipherSpec(1));
    cipherSpecs.add(CipherSpecs.getCipherSpec(2));
    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;
                combinations.add(new FrameworkCombination(configName, chunker, multiChunker, transformer));
            }
        }
    }
}

Example 2 with CipherTransformer

use of org.syncany.chunk.CipherTransformer in project syncany by syncany.

the class MultiCipherStreamsTest method testSaxParserWithMultiCipherTransformer.

public void testSaxParserWithMultiCipherTransformer(List<CipherSpec> cipherSuites) throws Exception {
    String xmlStr = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + "<database version=\"1\">\n" + "	<databaseVersions>\n" + "		<databaseVersion>\n" + "		</databaseVersion>\n" + "	</databaseVersions>\n" + "	<databaseVersions>\n" + "		<databaseVersion>\n" + "		</databaseVersion>\n" + "	</databaseVersions>\n" + "	<databaseVersions>\n" + "		<databaseVersion>\n" + "		</databaseVersion>\n" + "	</databaseVersions>\n" + "	<databaseVersions>\n" + "		<databaseVersion>\n" + "		</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());
// Success if it does not throw an exception
// Regular CipherInputStream does NOT work with GCM mode
// GcmCompatibleCipherInputStream fixes this!
// 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
}

Example 3 with CipherTransformer

use of org.syncany.chunk.CipherTransformer in project syncany by syncany.

the class MultiCipherStreamsTest method doTestEncryption.

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++) {
        srcData[i] = (byte) (i & 0xff);
    }
    byte[] encryptedData1 = doEncrypt(srcData, encryptCipherTransformer);
    logger.log(Level.INFO, "Encrypted Data (Round 1): " + StringUtil.toHex(encryptedData1));
    byte[] decryptedData1 = doDecrypt(encryptedData1, decryptCipherTransformer);
    byte[] encryptedData2 = doEncrypt(srcData, encryptCipherTransformer);
    byte[] decryptedData2 = doDecrypt(encryptedData2, decryptCipherTransformer);
    logger.log(Level.INFO, "Source Data:              " + StringUtil.toHex(srcData));
    logger.log(Level.INFO, "Decrypted Data (Round 1): " + StringUtil.toHex(decryptedData1));
    logger.log(Level.INFO, "Decrypted Data (Round 2): " + StringUtil.toHex(decryptedData2));
    logger.log(Level.INFO, "Encrypted Data (Round 1): " + StringUtil.toHex(encryptedData1));
    logger.log(Level.INFO, "Encrypted Data (Round 2): " + StringUtil.toHex(encryptedData2));
    assertEquals("Source data and decrypted data is different (round 1)", StringUtil.toHex(srcData), StringUtil.toHex(decryptedData1));
    assertEquals("Source data and decrypted data is different (round 2)", StringUtil.toHex(srcData), StringUtil.toHex(decryptedData2));
    assertNotSame("Encrypted data for round 1 and 2 are identical", StringUtil.toHex(encryptedData1), StringUtil.toHex(encryptedData2));
    logger.log(Level.INFO, "Passed.");
}

Example 4 with CipherTransformer

use of org.syncany.chunk.CipherTransformer in project syncany by syncany.

the class Config method initTransformers.

private void initTransformers(RepoTO repoTO) throws Exception {
    if (repoTO.getTransformers() == null || repoTO.getTransformers().size() == 0) {
        transformer = new NoTransformer();
    } else {
        List<TransformerTO> transformerTOs = new ArrayList<TransformerTO>(repoTO.getTransformers());
        Transformer lastTransformer = null;
        for (int i = transformerTOs.size() - 1; i >= 0; i--) {
            TransformerTO transformerTO = transformerTOs.get(i);
            Transformer transformer = Transformer.getInstance(transformerTO.getType());
            if (transformer == null) {
                throw new ConfigException("Cannot find transformer '" + transformerTO.getType() + "'");
            }
            if (transformer instanceof CipherTransformer) {
                // Dirty workaround
                transformerTO.getSettings().put(CipherTransformer.PROPERTY_MASTER_KEY, StringUtil.toHex(getMasterKey().getEncoded()));
                transformerTO.getSettings().put(CipherTransformer.PROPERTY_MASTER_KEY_SALT, StringUtil.toHex(getMasterKey().getSalt()));
            }
            transformer.init(transformerTO.getSettings());
            if (lastTransformer != null) {
                transformer.setNextTransformer(lastTransformer);
            }
            lastTransformer = transformer;
        }
        transformer = lastTransformer;
    }
}