Examples with Header org.apache.cayenne.crypto.transformer.bytes.Header used on opensource projects

Example 1 with Header

use of org.apache.cayenne.crypto.transformer.bytes.Header in project cayenne by apache.

the class Runtime_AES128_GZIP_IT method testInsert.

@Test
public void testInsert() throws SQLException {
    ObjectContext context = runtime.newContext();
    // make sure compression is on...
    byte[] cryptoBytes = CryptoUnitUtils.bytesOfSize(GZIP_THRESHOLD + 100);
    Table2 t1 = context.newObject(Table2.class);
    t1.setPlainBytes("plain_1".getBytes());
    t1.setCryptoBytes(cryptoBytes);
    context.commitChanges();
    Object[] data = table2.select();
    assertArrayEquals("plain_1".getBytes(), (byte[]) data[1]);
    Header h = Header.create((byte[]) data[2], 0);
    assertTrue(h.isCompressed());
    assertArrayEquals(cryptoBytes, CryptoUnitUtils.gunzip(CryptoUnitUtils.decrypt_AES_CBC((byte[]) data[2], runtime)));
}

Example 2 with Header

use of org.apache.cayenne.crypto.transformer.bytes.Header in project cayenne by apache.

the class Runtime_AES128_GZIP_IT method testInsert_Small.

@Test
public void testInsert_Small() throws SQLException {
    ObjectContext context = runtime.newContext();
    // make sure compression is on...
    byte[] cryptoBytes = CryptoUnitUtils.bytesOfSize(GZIP_THRESHOLD - 20);
    Table2 t1 = context.newObject(Table2.class);
    t1.setPlainBytes("plain_1".getBytes());
    t1.setCryptoBytes(cryptoBytes);
    context.commitChanges();
    Object[] data = table2.select();
    assertArrayEquals("plain_1".getBytes(), (byte[]) data[1]);
    Header h = Header.create((byte[]) data[2], 0);
    assertFalse(h.isCompressed());
    assertArrayEquals(cryptoBytes, CryptoUnitUtils.decrypt_AES_CBC((byte[]) data[2], runtime));
}

Example 3 with Header

use of org.apache.cayenne.crypto.transformer.bytes.Header in project cayenne by apache.

the class CryptoUnitUtils method decrypt_AES_CBC.

public static byte[] decrypt_AES_CBC(byte[] source, ServerRuntime runtime) {
    try {
        Cipher decCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        Header header = Header.create(source, 0);
        int offset = header.size();
        if (header.haveHMAC()) {
            byte hmacLength = source[offset];
            offset += hmacLength + 1;
        }
        int blockSize = decCipher.getBlockSize();
        byte[] ivBytes = Arrays.copyOfRange(source, offset, offset + blockSize);
        byte[] cipherText = Arrays.copyOfRange(source, offset + blockSize, source.length);
        Key key = runtime.getInjector().getInstance(KeySource.class).getKey(header.getKeyName());
        decCipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(ivBytes));
        return decCipher.doFinal(cipherText);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}