What is the correct way to configure a spring TextEncryptor for use on Heroku

Question

I have a spring TextEncryptor defined like this

Answer 1

You can also do the following. Though this seems to have stopped working on the latest builds of Java 8.

    Field field = Class.forName("javax.crypto.JceSecurity").getDeclaredField("isRestricted");
    if (Boolean.TRUE.equals(field.get(null))) {
        if (Modifier.isFinal(field.getModifiers())) {
            Field modifiers = Field.class.getDeclaredField("modifiers");
            modifiers.setAccessible(true);
            modifiers.setInt(field, field.getModifiers() & ~Modifier.FINAL);
        }
        field.setAccessible(true);
        field.setBoolean(null, false); // isRestricted = false;
        field.setAccessible(false);
    }
    textEncryptor = Encryptors.text(key, salt);