Merge pull request #3 from shayanb/master

Selective Disclosure and Developer Libraries workshop notes

developer-libraries.md

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+# Developer Libraries
+
+2018.06.26 13:00-14:00 Jack (Str4d) Grigg
+
+
+The workshop was mainly a discussion on what kind of libraries and tools are needed in the ZCash ecosystem
+
+
+The state of ZCash Libraries now:
+- Zcash libraries are mostly ported from Bitcoin ones
+--  Libraries with t-address support
+   - Bitcore
+   - python-bitcoinlib
+   - z-nomp
+-- Shielded Addresses
+--- Nothing!
+- Most of the codes are in Rust
+-- Librustzcash
+--- Libwallet-zcash
+---- What functionalities do we want it to do?
+--- Also used in Zcash Fullnode
+
+
+
+- Discussion on what do we need?
+-- In-browser Signing / Creation of transactions
+-- cross-language tools
+-- Need for  a curated list of dev tools
+-- APIs for humans and machines
+
+
+
+- Back to where dev tools are required:
+-- Low friction - Convenience:
+--- Browser
+--- Docker
+--- Packages with every language (npm, pip)
+
+
+- Operations required for such libraries to do:
+-- Address creation
+--- ZIP32
+-- Address (key) Management
+-- Signing
+--- Multi-signature Architecture
+-- Proving
+-- Payment detection
+-- UTXO Management
+-- Serialization

selective-disclosure.md

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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
+-- ...