Examples with EncryptedSegmenter org.apache.cassandra.db.commitlog.CommitLogSegmentReader.EncryptedSegmenter used on opensource projects

Example 1 with EncryptedSegmenter

use of org.apache.cassandra.db.commitlog.CommitLogSegmentReader.EncryptedSegmenter in project cassandra by apache.

the class SegmentReaderTest method underlyingEncryptedSegmenterTest.

public void underlyingEncryptedSegmenterTest(BiFunction<FileDataInput, Integer, ByteBuffer> readFun) throws IOException {
    EncryptionContext context = EncryptionContextGenerator.createContext(true);
    CipherFactory cipherFactory = new CipherFactory(context.getTransparentDataEncryptionOptions());
    int plainTextLength = (1 << 13) - 137;
    ByteBuffer plainTextBuffer = ByteBuffer.allocate(plainTextLength);
    random.nextBytes(plainTextBuffer.array());
    ByteBuffer compressedBuffer = EncryptionUtils.compress(plainTextBuffer, null, true, context.getCompressor());
    Cipher cipher = cipherFactory.getEncryptor(context.getTransparentDataEncryptionOptions().cipher, context.getTransparentDataEncryptionOptions().key_alias);
    File encryptedFile = File.createTempFile("encrypted-segment-", ".log");
    encryptedFile.deleteOnExit();
    FileChannel channel = new RandomAccessFile(encryptedFile, "rw").getChannel();
    channel.write(ByteBufferUtil.bytes(plainTextLength));
    EncryptionUtils.encryptAndWrite(compressedBuffer, channel, true, cipher);
    channel.close();
    try (RandomAccessReader reader = RandomAccessReader.open(encryptedFile)) {
        context = EncryptionContextGenerator.createContext(cipher.getIV(), true);
        EncryptedSegmenter segmenter = new EncryptedSegmenter(reader, context);
        SyncSegment syncSegment = segmenter.nextSegment(0, (int) reader.length());
        // EncryptedSegmenter includes the Sync header length in the syncSegment.endPosition (value)
        Assert.assertEquals(plainTextLength, syncSegment.endPosition - CommitLogSegment.SYNC_MARKER_SIZE);
        ByteBuffer fileBuffer = readFun.apply(syncSegment.input, plainTextLength);
        plainTextBuffer.position(0);
        Assert.assertEquals(plainTextBuffer, fileBuffer);
    }
}