Neo-smacco NPM

smacco

SMACCO - SMart ACcount COmposer

This project aims to easily generate "smart accounts" for holding assets based on different (and combined) features:

public/private key validation
MultiSig
timelock
Asset-specific behavior (only allowing withdraws for specific assets, for example)

That will help NEO users to easily create and manage safe account addresses. Initially, only json interface will be provided to allow C# code generation (that will become AVM). After that, visual interfaces can help the design process, keeping in mind this is NOT a tool intended for developers, but to general public.

How to use it

Install on web browser

<script src="https://unpkg.com/neo-smacco/dist/bundle.js"></script>

Smacco = smacco.Smacco;

Install on npm

npm install neo-smacco

const Smacco = require('smacco').Smacco;

For Developers

Tests

npm test

Build Webpack

npm run build

New minor version

npm version minor

Push and Publish

git push origin master --tags

npm publish

Examples

Checking Simple Signature

{
  "standard": "smacco-1.0",
  "input_type" : "single",
  "pubkey_list" : ["036245f426b4522e8a2901be6ccc1f71e37dc376726cc6665d80c5997e240568fb"],
  "rule" : {
    "rule_type": "ALLOW_IF",
    "condition" : {
      "condition_type" : "CHECKSIG"
    }
  }
}

Checking Multiple Signatures (2/3 multisig)

{
 "standard": "smacco-1.0",
 "input_type" : "array",
 "pubkey_list" : ["036245f426b4522e8a2901be6ccc1f71e37dc376726cc6665d80c5997e240568fb",
   "0303897394935bb5418b1c1c4cf35513e276c6bd313ddd1330f113ec3dc34fbd0d", "02e2baf21e36df2007189d05b9e682f4192a101dcdf07eed7d6313625a930874b4"],
 "rule" : {
   "rule_type": "ALLOW_IF",
   "condition" : {
     "condition_type" : "CHECKMULTISIG",
     "minimum_required" : "2"
   },
 }
}

Time Locking funds (until timestamp 1536896190)

{
  "standard": "smacco-1.0",
  "input_type" : "single",
  "pubkey_list" : ["036245f426b4522e8a2901be6ccc1f71e37dc376726cc6665d80c5997e240568fb"],
  "rules" : [
    {
      "rule_type": "DENY_IF",
      "condition" : {
        "condition_type" : "TIMESTAMP_LESS",
        "timestamp" : "1536896190",
      },
    },
    {
      "rule_type": "ALLOW_IF",
      "condition" : {
        "condition_type" : "CHECKSIG"
      },
    },
  ]
}

Complex logic -- Charity Donations Template

This example is inspired by a conversation with @lerider and @vncoelho (https://github.com/neo-project/proposals/issues/53), the idea is to demonstrate the capability of easily handling different logic for different assets (Neo/Gas/...).

{
  "standard": "smacco-1.0",
  "input_type" : "single",
  "pubkey_list" : ["031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a", "036245f426b4522e8a2901be6ccc1f71e37dc376726cc6665d80c5997e240568fb"],
  "rules" : [
    {
      "rule_type": "ALLOW_IF",
      "condition" : {
        "condition_type" : "CHECKSIG",
        "pubkey" : "0"
      },
    },
    {
      "rule_type": "ALLOW_IF",
      "condition" : {
        "condition_type" : "AND",
        "conditions" : [
          {
            "condition_type" : "CHECKSIG",
            "pubkey" : "1"
          },
          {
            "condition_type" : "OR",
            "conditions" : [
              {
                "condition_type" : "AND",
                "conditions" : [
                  {
                    "condition_type" : "SELF_TRANSFER"
                  },
                  {
                    "condition_type" : "ONLY_NEO"
                  }
                ]
              },
              {
                "condition_type" : "ONLY_GAS"
              }
            ]
          },
        ]
      },
    },
  ],
  "default_rule" : "DENY_ALL"
}