I'm developing free and open source personal secrets manager under GPLv3, yes the ui part completely vibecoded, but the cryptography algorithm and vault design is the original idea. So, I need some help, Is there anyone here who knows cryptography? I’ve already checked with all the models I have access to, and they all pointed out the obvious flaws, but every single one says the algorithm is good. In short, it’s E2EE without disclosure, signed and containing a hash chain. Of course this product is an early stage, so I’d like help now to avoid having to break the vault’s format later.