javax.crypto.CipherSpi Java Examples

/**
 * Creates a {@link javax.crypto.Cipher} instance from a {@link javax.crypto.CipherSpi}.
 *
 * @param cipherSpi the {@link javax.cyrpto.CipherSpi} instance
 * @param transformation the transformation cipherSpi was obtained for
 * @return a {@link javax.crypto.Cipher} instance
 * @throws Throwable in case of an error
 */
private static Cipher getCipher(final CipherSpi cipherSpi, final String transformation) throws Throwable {
	
	//06-19 15:22:00.727: W/erverSocketPipelineSink(31810): Caused by: java.lang.NoSuchMethodException: <init> [class javax.crypto.CipherSpi, class java.lang.String]

	
	/* This API isn't public - usually you're expected to simply use Cipher.getInstance().
	 * Due to the signed-jar restriction for JCE providers that is not an option, so we
	 * use one of the private constructors of Cipher.
	 */
	final Class<Cipher> cipherClass = Cipher.class;
	final Constructor<Cipher> cipherConstructor = cipherClass.getDeclaredConstructor(CipherSpi.class, String.class);
	cipherConstructor.setAccessible(true);
	try {
		return cipherConstructor.newInstance(cipherSpi, transformation);
	}
	catch (final InvocationTargetException e) {
		throw e.getCause();
	}
}
 

/**
 * Sets the mode of a {@link javax.crypto.CipherSpi} instance.
 *
 * Like {@link #getCipher(String)}, we're accessing a private API
 * here, so me must work around the access restrictions
 *
 * @param cipherSpi the {@link javax.crypto.CipherSpi} instance
 * @param mode the mode to set
 * @throws Throwable if {@link javax.crypto.CipherSpi#engineSetPadding} throws
 */
private static void cipherSpiSetMode(final CipherSpi cipherSpi, final String mode) throws Throwable {
	final Method engineSetMode = getMethod(cipherSpi.getClass(), "engineSetMode", String.class);
	engineSetMode.setAccessible(true);
	try {
		engineSetMode.invoke(cipherSpi, mode);
	}
	catch (final InvocationTargetException e) {
		throw e.getCause();
	}
}
 

/**
 * Sets the padding of a {@link javax.crypto.CipherSpi} instance.
 *
 * Like {@link #getCipher(String)}, we're accessing a private API
 * here, so me must work around the access restrictions
 *
 * @param cipherSpi the {@link javax.crypto.CipherSpi} instance
 * @param padding the padding to set
 * @throws Throwable if {@link javax.crypto.CipherSpi#engineSetPadding} throws
 */
private static void cipherSpiSetPadding(final CipherSpi cipherSpi, final String padding) throws Throwable {
	final Method engineSetPadding = getMethod(cipherSpi.getClass(), "engineSetPadding", String.class);
	engineSetPadding.setAccessible(true);
	try {
		engineSetPadding.invoke(cipherSpi, padding);
	}
	catch (final InvocationTargetException e) {
		throw e.getCause();
	}
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}
 

/**
 * Creates a Cipher object.
 *
 * @param cipherSpi the delegate
 * @param provider the provider
 * @param transformation the transformation
 */
protected CipherForKeyProtector(CipherSpi cipherSpi,
                                Provider provider,
                                String transformation) {
    super(cipherSpi, provider, transformation);
}