Seems like a bit too much trouble for something as simple as keeping track of passwords for backups across time in a secure manner. There are a few simple alternatives here. Firstly one could use one of many simple programs available (many of which are free) for storing passwords with comments in a secure manner. The comments can be used to indicated the date stamp. Alternatively get someone in your company to create a simple app that saves your passwords and dates and an additional comment in an encrypted format. This will have two advantages over existing software. The first will be that it will be unique to your company and thus will not have a hack. The second will be that one can taylor the app to your individual company needs. To a person familiar with C++ or VB this should take no longer than an hour to develop and deploy.