api: Print sigHash in getBlockWithConsensusInfo

[blukat29]

Proposed changes

• Modify klay_getBlockWithConsensusInfo and ken util decode-extra to additionally print sigHash field
  • a proposer signs sigHash to create seal
  • a validator signs blockHash + 0x02 to create committedSeal
  • see TestRecoverCommittedSeal result below
• Add a unit test with real data

Types of changes

• Bugfix
• New feature or enhancement
• Others

Checklist

• I have read the CONTRIBUTING GUIDELINES doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes ($ make test)
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

Related issues

Further comments

$ go test -v -run=TestRecoverCommittedSeal

    api_test.go:36: 0f1c60a9847eb10cedc902507188262dc78f8d575d571ab1fdf472a9ad7252c2 dc7dca1dc15d06e83a0a39217052ad7915d3b0f0a68f49d4b53498130a1212327b9dd5514362eb3e5f0ebb277e7d38baecad9cd045d3627d3a1f322422eeee8a01 -> 5cb1a7dccbd0dc446e3640898ede8820368554c8
    api_test.go:43: 4d0a7bafd8a88c983431031270df6bfc0e9a0909b126f2a3f1ac5b3c03392eb702 0a3fb9227632261c8520f1ee859c503f017701fdb92c2e39f532e190779888a63cf112cf2e530f656153ab64103558c26fb9ca43d5cf31425e62569f891e1eca00 -> 5cb1a7dccbd0dc446e3640898ede8820368554c8
    api_test.go:43: 4d0a7bafd8a88c983431031270df6bfc0e9a0909b126f2a3f1ac5b3c03392eb702 4a32097b87c481f145ae75ded4e8ec2ea4230c7b2feb3f3afcd2d22ea0b7d4596f4354e185d4f1f93b4d758ddb97e9203e1d306413ad0db1f4a779156879baa300 -> 571e53df607be97431a5bbefca1dffe5aef56f4d
    api_test.go:43: 4d0a7bafd8a88c983431031270df6bfc0e9a0909b126f2a3f1ac5b3c03392eb702 fde66a2abb916bf314c82a2dfcd82ed356af829a98573d7cdb4a74cccb6ceecc22358750332ad31dccd9a890dbde7e0d4e21f173515011656f6c222169ba946200 -> 99fb17d324fa0e07f23b49d09028ac0919414db6

ken --exec "console.log(JSON.stringify(klay.getHeader(144654443)))" attach https://public-en-baobab.klaytn.net/ | head -1 > header.json
ken util decode-extra header.json

{
  "committedSeal": [
    "0x0a3fb9227632261c8520f1ee859c503f017701fdb92c2e39f532e190779888a63cf112cf2e530f656153ab64103558c26fb9ca43d5cf31425e62569f891e1eca00",
    "0x4a32097b87c481f145ae75ded4e8ec2ea4230c7b2feb3f3afcd2d22ea0b7d4596f4354e185d4f1f93b4d758ddb97e9203e1d306413ad0db1f4a779156879baa300",
    "0xfde66a2abb916bf314c82a2dfcd82ed356af829a98573d7cdb4a74cccb6ceecc22358750332ad31dccd9a890dbde7e0d4e21f173515011656f6c222169ba946200"
  ],
  "committedSealSize": 3,
  "committers": [
    "0x5cb1a7dccbd0dc446e3640898ede8820368554c8",
    "0x571e53df607be97431a5bbefca1dffe5aef56f4d",
    "0x99fb17d324fa0e07f23b49d09028ac0919414db6"
  ],
  "hash": "0x4d0a7bafd8a88c983431031270df6bfc0e9a0909b126f2a3f1ac5b3c03392eb7",
  "proposer": "0x5Cb1A7dccbd0Dc446e3640898EDE8820368554c8",
  "round": 0,
  "seal": "0xdc7dca1dc15d06e83a0a39217052ad7915d3b0f0a68f49d4b53498130a1212327b9dd5514362eb3e5f0ebb277e7d38baecad9cd045d3627d3a1f322422eeee8a01",
  "sigHash": "0x0f1c60a9847eb10cedc902507188262dc78f8d575d571ab1fdf472a9ad7252c2",
  "validatorSize": 4,
  "validators": [
    "0x571E53Df607bE97431a5bBeFcA1DFfE5aEF56F4d",
    "0x5Cb1A7dccbd0Dc446e3640898EDE8820368554c8",
    "0x99FB17d324fa0e07F23b49d09028Ac0919414dB6",
    "0xB74Ff9DEa397fE9E231df545eb53fE2ADF776cb2"
  ]
}

[blukat29]

@jiseongnoh TestRecoverCommittedSeal is a correctness check for the committers field

[jiseongnoh]

thank you!