[bisq-network/bisq] Reuse of Monero receiving address (#4500)

[rating89us]

In bisq, each Monero account supports a single Monero receiving address. Even though reusing a Monero address is not as dangerous as reusing a Bitcoin address (because Monero address is never public stored in the blockchain), this practice can still compromise user's privacy if there is off-chain linking.

Instead of asking for a receiving Monero address, Monero bisq account could ask for the public spend key and the secret view key. With these two keys, bisq would be able to generate a new subaddress for each new transaction, avoiding address reuse and increasing user privacy. Take a look at this solution in https://github.com/knaccc/subaddress-js.

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