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2022-07-06-notes.md

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Source: https://hackmd.io/OfNvS1E4Q5O0BSZwhYLZOw

Private Groups vs Meta Feeds | 2022-07-06

Prior art:

Metafeeds structure

See also ssbc/ssb-meta-feeds-spec#30

Can we separate "membership" from "groups", such that we could have public groups (i.e. membership mechanics without the box2 encryption)

TODO: FIX THIS DIAGRAM GIVEN THE PAPER NOTES

flowchart TB;
  root-->groupsRootX
  
  subgraph groups
    direction LR
    groupsRootX[.]:::invisible
    announce1([meta/add: invitations])
    announce2([meta/add: f3]):::encrypted
  end

  subgraph f3Feed
      
  end

  subgraph invitationsFeed[Invitations]
    invitationsFeedX[.]:::invisible
    group/addMember[group/addMember: Bob]:::encrypted
  
  
  end
  
  subgraph batsFeed[Bats]
    batsFeedX[.]:::invisible
 
    group/init:::encrypted
    %% group/add
  
  end
  
  announce2-->f3Feed
  announce1-->invitationsFeedX
  
  classDef rainbow fill:#faf,stroke:#a7a;
  classDef encrypted fill:#faa,stroke:#a77;
  classDef invisible fill:#fff0,stroke:#fff0;
Loading

Network identity

https://github.com/ssbc/ssb-network-identity-spec

What's in ssb-tribes

ssb-keyring

startup:

  • load db
  • load in all your DM keys
    • each subfeed has a keypair and could be DM'd
// ssb-box2

const ring = await keyRing(path)

// assume persisting dm keys

const keysToTry = ring.decryption(authorId)
  groupKeys that authorId is know to be in
  DMKeys:
    DH(authorPk x rootSk)
    DH(authorPk x mainSk) (optional)
      - this may be needed if main feed is presen

Questions:

  1. who DM's who?
    • author: @mixInvitationFeedId
    • recps: [@andersFeedId]
      • which anders feedId?
      • which anders DM key?
    • PROPOSAL A
      • root metafeed is the recp
    • PROPOSAL B
      • only DM "parallel/sister" sub-feeds
      • ehhhh... not sure
    • PROPOSAL C
      • main feed is the recp
      • pros: good for compat, BUT, we don't need compat with Patchwork etc regarding box2 and metafeeds

Principles:

  • low level foot-guns, high level good ideas
  • complexity lens - you have to write the code
  • make it work, make it right, make it fast; in that order

Agreements

  1. (for now) when DM'ing a person: a) use the root feedId b) the DH key derived from root feedId
  2. (for now) drop membership from ssb-keyring
    • anders is gonna benchmark
      • check for 10 / 100 / 1000 groups
      • check "known membership" versus "try all"