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In "7nodes" installation example from JPMorgan Quorum github is used such a genesis file ("istanbul-genesus.json"):

{
"alloc": {
  "0x0000000000000000000000000000000000000020": {
    "code": "0x606060405236156100c45760e060020a60003504631290948581146100c9578063284d163c146100f957806342169e4814610130578063488099a6146101395780634fe437d514610154578063559c390c1461015d57806368bb8bb61461025d57806372a571fc146102c857806386c1ff681461036957806398ba676d146103a0578063a7771ee31461040b578063adfaa72e14610433578063cf5289851461044e578063de8fa43114610457578063e814d1c71461046d578063f4ab9adf14610494575b610002565b610548600435600160a060020a03331660009081526003602052604090205460ff16156100c45760018190555b50565b610548600435600160a060020a03331660009081526005602052604090205460ff16156100c4576004546001141561055e57610002565b61045b60025481565b61054a60043560056020526000908152604090205460ff1681565b61045b60015481565b61045b60043560006000600060006000600050600186038154811015610002579080526002027f290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e5630192505b60018301548110156105d75760018301805484916000918490811015610002576000918252602080832090910154835282810193909352604091820181205485825292869052205410801561023257506001805490840180548591600091859081101561000257906000526020600020900160005054815260208101919091526040016000205410155b156102555760018301805482908110156100025760009182526020909120015491505b6001016101a8565b610548600435602435600160a060020a03331660009081526003602052604081205460ff16156100c4578054839010156105e45780548084038101808355908290829080158290116105df576002028160020283600052602060002091820191016105df919061066b565b610548600435600160a060020a03331660009081526005602052604090205460ff16156100c457600160a060020a0381166000908152604090205460ff1615156100f65760406000819020805460ff191660019081179091556004805490910190558051600160a060020a038316815290517f1a4ce6942f7aa91856332e618fc90159f13a340611a308f5d7327ba0707e56859181900360200190a16100f6565b610548600435600160a060020a03331660009081526003602052604090205460ff16156100c4576002546001141561071457610002565b61045b600435602435600060006000600050600185038154811015610002579080526002027f290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e5630181509050806001016000508381548110156100025750825250602090200154919050565b61054a600435600160a060020a03811660009081526003602052604090205460ff165b919050565b61054a60043560036020526000908152604090205460ff1681565b61045b60045481565b6000545b60408051918252519081900360200190f35b61054a600435600160a060020a03811660009081526005602052604090205460ff1661042e565b610548600435600160a060020a03331660009081526003602052604090205460ff16156100c457600160a060020a03811660009081526003602052604090205460ff1615156100f65760406000818120600160a060020a0384169182905260036020908152815460ff1916600190811790925560028054909201909155825191825291517f0ad2eca75347acd5160276fe4b5dad46987e4ff4af9e574195e3e9bc15d7e0ff929181900390910190a16100f6565b005b604080519115158252519081900360200190f35b600160a060020a03811660009081526005602052604090205460ff16156100f65760406000819020805460ff19169055600480546000190190558051600160a060020a038316815290517f8cee3054364d6799f1c8962580ad61273d9d38ca1ff26516bd1ad23c099a60229181900360200190a16100f6565b509392505050565b505050505b60008054600019850190811015610002578382526002027f290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563016020819052604082205490925014156106b8578060010160005080548060010182818154818355818115116106a5578183600052602060002091820191016106a5919061068d565b50506002015b808211156106a157600181018054600080835591825260208220610665918101905b808211156106a1576000815560010161068d565b5090565b5050506000928352506020909120018290555b600082815260208281526040918290208054600101905581514381529081018490528151600160a060020a033316927f3d03ba7f4b5227cdb385f2610906e5bcee147171603ec40005b30915ad20e258928290030190a2505050565b600160a060020a03811660009081526003602052604090205460ff16156100f65760406000819020805460ff19169055600280546000190190558051600160a060020a038316815290517f183393fc5cffbfc7d03d623966b85f76b9430f42d3aada2ac3f3deabc78899e89181900360200190a16100f656",
    "storage": {
      "0x0000000000000000000000000000000000000000000000000000000000000001": "0x02",

      "0x0000000000000000000000000000000000000000000000000000000000000002": "0x03",
      "0x29ecdbdf95c7f6ceec92d6150c697aa14abeb0f8595dd58d808842ea237d8494": "0x01",
      "0x6aa118c6537572d8b515a9f9154be55a3377a8de7991cd23bf6e5ceb368688e3": "0x01",
      "0x50793743212c6f01d326957d7069005b912f8215f10c7536be6b10782c6c44cd": "0x01",

      "0x0000000000000000000000000000000000000000000000000000000000000004": "0x02",
      "0xaca3b76ed4968740c3180dd7fa37f4aa229a2c758a848f53920e9ccb4c4bb74e": "0x01",
      "0xd188ba2dc293670542c1befaf7678b0859e5354a0727d1188b2afb6f47fe24d1": "0x01"
    },
    "balance": "1000000000000000000000000000"
  },

  "0xed9d02e382b34818e88b88a309c7fe71e65f419d": {
    "balance": "1000000000000000000000000000"
  },
  "0xca843569e3427144cead5e4d5999a3d0ccf92b8e": {
    "balance": "1000000000000000000000000000"
  },
  "0x0fbdc686b912d7722dc86510934589e0aaf3b55a": {
    "balance": "1000000000000000000000000000"
  },
  "0x9186eb3d20cbd1f5f992a950d808c4495153abd5": {
    "balance": "1000000000000000000000000000"
  },
  "0x0638e1574728b6d862dd5d3a3e0942c3be47d996": {
    "balance": "1000000000000000000000000000"
  }
},
"coinbase": "0x0000000000000000000000000000000000000000",
"config": {
  "homesteadBlock": 1,
    "eip150Block": 2,
    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "eip155Block": 3,
    "eip158Block": 3,
  "istanbul": {
    "epoch": 30000,
    "policy": 0
  },
  "isQuorum": true
},
"extraData": "0x0000000000000000000000000000000000000000000000000000000000000000f897f893946571d97f340c8495b661a823f2c2145ca47d63c2948157d4437104e3b8df4451a85f7b2438ef6699ff94b131288f355bc27090e542ae0be213c20350b76794b912de287f9b047b4228436e94b5b78e3ee1617194d8dba507e85f116b1f7e231ca8525fc9008a696694e36cbeb565b061217930767886474e3cde903ac594f512a992f3fb749857d758ffda1330e590fa915e80c0",
"gasLimit": "0x47b760",
"difficulty": "0x1",
"mixHash": "0x63746963616c2062797a616e74696e65206661756c7420746f6c6572616e6365",
"nonce": "0x0",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp": "0x00"

}

So, this genesis file, obviously, contains contract binary code at address 0x00...0020.

But what is the source code of this contract?

I have read, that in old versions of Quorum this contract was the voting contract of QuorumChain consensus algorithm. In latest version they removed QuorumChain and added Istanbul BFT consensus. So it is new contract.

And you can not find its source code in the Quorum sources. There are no contracts similar to this one (even by size) in the sources.

I decompiled this contract in EVM mnemocode, but original sources will be more helpfull.

P.S.

I asked for this question Quorum team (by their contact email) - they didn't respond.

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1 回答 1

0

可能是block_voting.sol。我有 90% 的把握。

另外，我有 90% 的把握它是垃圾。伊斯坦布尔共识不使用该合约。

一些证据（使用radare2）：

  1. 从“istanbul-genesus.json”中剪切“code:”内容，并粘贴到文本文件“istanbul-cintract.hex”。删除“0x”前缀：“606060405236156100c45760e060020a6...

  2. 通过“rax2”工具将其转换为二进制：

    $ rax2 -s < ./istanbul-cintract.hex > ./istanbul-cintract.bin

  3. 用“radare2”反汇编（如果没有安装“evm”架构包，安装$ r2pm install evm）。有用的链接是Debugging EVM和Reversing EVM。

    $ r2 -A -a evm ./istanbul-cintract.bin
  Cannot set bits 64 to 'evm'
  Cannot set bits 64 to 'evm'
  -- some kind of jokes form radare2 here... dont panic
  [0x00000000]> pdf > ./istanbul-cintract.asm

  4. 现在你得到了“istanbul-cintract.asm”。对其进行一些分析：

    0x00000014 6312909485 push4 0x12909485 ; it is "SELECTOR" of public function
                                  ; S:[0x12909485, FUNC_SELECTOR]  //FUNC_SELECTOR - first 4 byte of transaction data
0x00000019 81         dup2        ; S:[FUNC_SELECTOR, 0x12909485, FUNC_SELECTOR]
0x0000001a 14         eq          ; S:[(FUNC_SELECTOR == 0x12909485), FUNC_SELECTOR]
0x0000001b 6100c9     push2 0xc9  ; S:[0xc9, (FUNC_SELECTOR == 0x12909485), FUNC_SELECTOR]
0x0000001e 57         jumpi       ; if (FUNC_SELECTOR == 0x12909485) goto 0xc9 address of bytecode

  5. 这是一个公共接口函数调用。如果函数选择器（交易数据的前 4 个字节）为0x12909485，则跳转到函数体。在下文中，我们可以找到公共函数的剩余选择器：

    0x00000014 6312909485  push4 0x12909485 
... etc, only selector push commands...
0x00000020 63284d163c  push4 0x284d163c
0x0000002b 6342169e48  push4 0x42169e48
0x00000036 63488099a6  push4 0x488099a6
0x00000041 634fe437d5  push4 0x4fe437d5
0x0000004c 63559c390c  push4 0x559c390c
0x00000057 6368bb8bb6  push4 0x68bb8bb6
0x00000062 6372a571fc  push4 0x72a571fc
0x0000006d 6386c1ff68  push4 0x86c1ff68
0x00000078 6398ba676d  push4 0x98ba676d
0x00000083 63a7771ee3  push4 0xa7771ee3
0x0000008e 63adfaa72e  push4 0xadfaa72e
0x00000099 63cf528985  push4 0xcf528985
0x000000a4 63de8fa431  push4 0xde8fa431
0x000000af 63e814d1c7  push4 0xe814d1c7
0x000000ba 63f4ab9adf  push4 0xf4ab9adf

  6. 作为该字节码与block_voting.sol具有相同接口的最终证明，让我们通过“block_voting.sol”中的签名重新计算选择器，并与字节码中找到的选择器进行比较：

    0x12909485 == web3.sha3("setVoteThreshold(uint256)").substr(0,10)
0x284d163c == web3.sha3("removeBlockMaker(address)").substr(0,10);
0x42169e48 == web3.sha3("voterCount()").substr(0,10);
0x488099a6 == web3.sha3("canCreateBlocks(address)").substr(0,10);
0x4fe437d5 == web3.sha3("voteThreshold()").substr(0,10);
0x559c390c == web3.sha3("getCanonHash(uint256)").substr(0,10);
0x68bb8bb6 == web3.sha3("vote(uint256,bytes32)").substr(0,10);
0x72a571fc == ??? not found...
0x86c1ff68 == web3.sha3("removeVoter(address)").substr(0,10);
0x98ba676d == web3.sha3("getEntry(uint256,uint256)").substr(0,10);
0xa7771ee3 == web3.sha3("isVoter(address)").substr(0,10);
0xadfaa72e == web3.sha3("canVote(address)").substr(0,10);
0xcf528985 == web3.sha3("blockMakerCount()").substr(0,10);
0xde8fa431 == web3.sha3("getSize()").substr(0,10);
0xe814d1c7 == web3.sha3("isBlockMaker(address)").substr(0,10);
0xf4ab9adf == web3.sha3("addVoter(address)").substr(0,10);

这是什么，由你决定……

于 2018-02-16T09:57:14.533 回答