Our company is using Aspose Email PersonalStorage object to create PSTs. We need to encrypt the PST file on disk. As a result, we are using the method which makes use of a Java IO stream as this can channelled through encryption. However, it seems that this method stores the whole PST in memory. The method which takes in a file location as argument saves the file to disk and is more memory efficient, however, it cannot be channelled through encryption. Would it be possible to write to disk while using encryption in order to be more memory efficient. Could you please advise.