Why does zashi re-use the same receiving t-address?

[Shawn]

@rotateaddr

Question for the ZCash wallet developers: are you even serious about this?

It’s not a simple add without potentially causing privacy issues:

Why does Zashi only allow 1 Transparent address?

What did we add that is “hyper niche?” For taddr rotation, we need to solve a security issue that involves core, and core has been focused on 6.1 and Zallet. If user receives funds to multiple taddrs and then shields them all at the same time, it reveals information to potential attackers. They will have some ability to determine that they are from the same wallet. For example, if the attacker sends funds to a taddr, they can then monitor when those funds are shielded and gain information from…

The concept is: generating multiple T addresses and then Zashi auto shields all of them for you, you could see on-chain that those addresses belong to the same wallet which basically negates any positive effect of having T address rotation in the first place.