# 2018-09-05 會議記錄

## 出席人員
* @yillkid
* @twzjwang
* @proof.K
* @jserv
* @jkrvivian
* @ender
* @AjMaChInE
* @howjmay
* @csielee
* @PunchShadow

## 重要變革
* [Understanding Decentralized IDs (DIDs) (中譯)](/s/Hy832Twv7)
* [Coming Up: Local Snapshots](https://blog.iota.org/coming-up-local-snapshots-7018ff0ed5db)
* [(中譯) IOTA本地快照功能即將推出](https://www.iotachina.com/iota-local-snapshots.html)
* [Local Snapshots 摘要](https://hackmd.io/s/rkbV-4dD7)
* 修剪舊筆交易並保存餘額
* 我們先選一個夠老的交易作為 snapshot 的支柱
* 再來就裁減掉此交易前面直接或間接驗證到的交易，並以此清理 DB
* 清掉舊交易之前，我們會檢查那些餘額會被影響到，並記錄其最終狀態到 snapshot file 中
* [(reddit) Coming Up: Local Snapshots – IOTA](https://www.reddit.com/r/Iota/comments/9c3jw9/coming_up_local_snapshots_iota/)
* [IOTA Local Snapshot study](/s/ryeEFfnPQ)
* [PACT 透過 IOTA + IPFS 建構安全的檔案分享 (針對病歷一類敏感資訊)](https://twitter.com/davidhawig/status/1036635771216818176)
* [透過 PoWsrv 加速](https://twitter.com/davidhawig/status/1035116383816888320)
* [Bosch 官方探討 IOTA 和軟體升級的議題](https://blog.bosch-si.com/bosch-iot-suite/software-updates-in-the-iot-an-introduction-to-sota/)

## 開發進度
* yillkid
* [Load balancer for Tangle accelerator (using Nginx) #90](https://github.com/DLTcollab/general/issues/90)
* [Deploy note for Load balancer for Tangle accelerator (using Nginx)](/s/S1loLtv4Q)

* [Study powsrv PoWaaS (PoW-as-a-service) #91](https://github.com/DLTcollab/general/issues/91)
* [The study note](/s/HkRiiUGw7)

* proof.K
* [Base: IRI with local snapshot (coordinator exists)](https://github.com/DLTcollab/general/issues/86)
* [Base: DoS attack experiment with FPGA accelerator](https://github.com/DLTcollab/general/issues/93)

* AjMaChInE

Secure seed

|iota.js/api_reference.md | entangled for mobile IOTA API |
| -------- | -------- |
|generateAddress|generateAddress|
| generateSignature|generateSignature |
|getNewAddress| |
|prepareTransfers| |
|getAccountData| |
|getInputs| |
* [iota.js/api_reference.md](https://github.com/iotaledger/iota.js/blob/next/api_reference.md#module_validators)
* [entangled/mobile/android/java/Interface.java](https://github.com/iotaledger/entangled/blob/46c41b72f930bd61a9791d60448c05d66558ef61/mobile/android/java/Interface.java)



TODO:
* 移植entagled實作的 generateSignature實作成OPTEE's TA
* [entangled/mobile/android/Interface.cpp](https://github.com/iotaledger/entangled/blob/46c41b72f930bd61a9791d60448c05d66558ef61/mobile/android/Interface.cpp)
* [http://entangled/common/](https://github.com/iotaledger/entangled/tree/46c41b72f930bd61a9791d60448c05d66558ef61/common)
* [iss.c.inc](https://github.com/iotaledger/entangled/blob/46c41b72f930bd61a9791d60448c05d66558ef61/common/sign/v1/iss.c.inc)

* 在secure world中實作seed generator library
* 實作secure storage機制
* 測試 generateSignature
* 移植entagled實作的generateAddress實作成OPTEE's TA並與secure storage機制結合
* 實作daemon程式
* 測試generateAddress
* 實作TARegisterSeed/ TAGetAddress與測試

Dcurl - scheduler - load balance

Dcurl - scheduler - static anaylsis
* 使用clang-analyser，測試環境: ubuntu 18.04

$ sudo apt-get install clang-tools
$ cd dcurl
$  scan-build make BUILD_FPGA_ACCEL=1 BUILD_COMPAT=1 
scan-build: Using '/usr/lib/llvm-6.0/bin/clang' for static analysis
  ...
$ scan-view /tmp/scan-build-2018-09-04-232048-2659-1
Starting scan-view at: http://127.0.0.1:8181
  Use Ctrl-C to exit.


* 分析 SEE/ FPGA/ ccurl的結果
* https://github.com/DLTcollab/dcurl/blob/dev/src/dcurl.c#L65
* memory leak
* no free
* Allocator sizeof operand mismatch

* PunchShadow
* API document 配置相關事宜
* [Slate](https://punchshadow.github.io/TangleID.github.io) v.s. [Redoc (based on Swagger UI)](https://punchshadow.github.io/swagger_test/) or Slate+Redoc
* [Swagger Editor](https://editor.swagger.io)
* 優缺點分析：
* Slate:
1. (優）利用 Markdown language 方便更新 documentu
2. (優）網頁設計彈性大
3. (缺) API 顯示較不清楚且難以維護

* Redoc:
1. (優) API 顯示設計較清楚明瞭
2. (優) 使用 OpenAPI ,用 JSON 格式維護整個 page
3. (優) 完整 [API parameter](https://www.openapis.org/blog/2017/03/01/openapi-spec-3-implementers-draft-released)
5. (缺) 網頁設計彈性小
6. (缺) [OpenAPI parameter](https://swagger.io/docs/specification/basic-structure/) 需要熟悉
* TODO:
* 視討論情況整合 document
* 網頁版面設計（

* ender503
* TangleID Client
* [Demo site](http://54.70.229.53:4500/)
* [tangleid-client-1.0.0.apk](https://drive.google.com/file/d/1TE1aEvBT3ymrv34qc9D3mnApT9XWq6Ll/view?usp=sharing)
* 新版 APK 需要搭配新的 Demo site
* Notification 尚未串接，因此手機端收不到 Verifiable Claim
* React Native 的限制
* 不支援 Node.js 環境，因此無法使用 MAM.lib.js
* 現階段 MAM 在手機端的 libs 不足
* 改由使用 API 進行 DID 的註冊

* TODOS
* TangleID Client
* 串接 Firebase 透過 Notification 接收 Verifiable Claim。
* TangleID API
* Register DID Identity
* POST http://api.puyuma.org/did with Public Key
* Return DID and Seed
* Resolver DID Document
* GET (http://api.puyuma.org/did/DID)[http://54.70.229.53:4600/did/did:tangleid:5iTtjEjhdAJoNnMJ7NPiUMZVHHK8WR771qsYSfFiqHFVbxyHp5VCdpjrvGTgJ55FLRSvoHTuQ]
* return DID Document
* [Sample](http://54.70.229.53:4600/did/did:tangleid:5iTtjEjhdAJoNnMJ7NPiUMZVHHK8WR771qsYSfFiqHFVbxyHp5VCdpjrvGTgJ55FLRSvoHTuQ)
* TangleID DID Auth
* TangleID DID Auth(did-auth)
* 從目前 Demo site 中可抽離出來的元件
* 使用 websocket 與 client 端進行溝通。(uPort 使用 long-polling)
* TangleID DID
* 評估使用一個 Repository 去管理不同的元件 with Lerna
* Sameple: [Canner](https://github.com/Canner/canner)
* NPM package naming
* @tangleid/mnid
* @tanlgeid/did
* @tangleid/did-auth

* jkrvivian
* entangled
* PR: [git hook installation guide](https://github.com/iotaledger/entangled/commit/bda6e7b645cd1045125942c83c48dfff1fc85334)
* PR: [cclient: Implement iota_api_get_transactions_to_approve
](https://github.com/iotaledger/entangled/pull/225)
* discussion: [cclient: About extended API implementation ](https://github.com/iotaledger/entangled/issues/232)
* APIs in tangle accelerator C version: [note](https://hackmd.io/s/r1EHxmWLQ#Required-for-building-tangle-accelerator)

* csielee
* Test XDK2MAM [issue#92](https://github.com/DLTcollab/general/issues/92)
* Modify directory struct [issue#2](https://github.com/DLTcollab/meta-dltcollab/issues/2)

* howjmay
* approved PR: [implement get_balances](https://github.com/iotaledger/entangled/pull/216)
* pending PR:
* [cclient: implement were_addresses_spent_from](https://github.com/iotaledger/entangled/pull/227)
* [Remove recursion in merkle tree implementation](https://github.com/iotaledger/entangled/pull/176)
* [Implement URI parser for IPv6](https://github.com/iotaledger/entangled/pull/204)
* discussion: [Implement bundle validator](https://github.com/iotaledger/entangled/issues/231)

###### tags: `Load balancer` `powsrv` `DID`