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Selective Disclosure

2018.06.26 14:10-15:10 - Jack (Dodger) Gavigan

Possible Disclosures:

  • Payment Disclosure -- For zAddress payments to prove the payment -- proof for shielded payment (receipt) -- should be saved before the software throws away the proof -- Discloses everything (Recipient, amount, memo)

  • Selective Disclosure (Not yet merged) -- Only disclose a selective section (only amount, recipient or ...) -- might make shielded transactions less efficient, requires changes in the protocol/cryptography

    -- If this happen (Selective Disclosure tuple), it's possible to get rid of transparent transactions all together

... // Missing notes

-- How to identify who leaked information in case there are multiple parties receiving the receipts.

  • what is available in Zcash today? -- Payment disclosure: Recipients, Amount, Memo -- Some options to do read only keys in new SPV implementations -- Coming soon --

  • One of the main issues with Selective disclosure is inadvertently disclose informations that they do not want disclosed -- such as UI misuse -- Device seizure -- ...