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Questions tagged [quorum]

Q&A related to Quorum, the permissioned Go implementation of Ethereum supporting data privacy.

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Deploying large contract (bytecode = ~31k) in genesis.json causes genesis.json to be ignored

I am deploying a private blockchain and currently I can set "gasLimit": "0xE00000000" in my genesis.json and when I run eth.getBlock("latest") I see the proper gas limit and other settings. However, ...
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Quorum Tessera Implementation in Go

as Quorum and Ethereum are developed in Go, would like to understand why Tessera, the new Quorum transaction manager to replace Constellation, is written in Java instead of Go? Thank you. Nathan Aw
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How to get decrypted transaction data in quorum?

On Quorum_Node1 I am sending a transaction with privateFor: parameter as follows: eth.sendTransaction({from: eth.accounts[0], to: "0xca84356...9a3d0ccf92b8e", data: web3.toHex('sample message for ...
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1answer
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Getting Fatal: Error starting protocol stack: Genesis not found in chain

I am getting the following error in one of the nodes, I have a quorum network running. Fatal: Error starting protocol stack: Genesis not found in chain DEBUG[02-19|08:37:08] FS scan times ...
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Difference between Recursive Linear Prefix or Recursive Length Prefix? Vs Google Protocol Buffer (Protobuf)

Like to know what is the difference between Recursive Linear Prefix and Recursive Length Prefix? I have seen both around Are there they same? Or different? Also would like to know the reason why RLP ...
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1answer
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Quorum Tessera Private/Public Keys vs Quorum (Ethereum) Keystore - Difference and Keys Management

Understand that Quorum Tessera is for encryption, decryption, and distribution of private transactions while Quorum Keystore is for normal transaction signing. Can both be collapsed into one set of ...
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What are the Minimum Requirements for a Quroum node?

I am planning to run a Quorum (Ethereum fork) blockchain on my business. I was wondering if quorum node will run on a Raspberry Pi 3 Model B+. Raspberri Specs: Broadcom BCM2837B0, Cortex-A53 (ARMv8)...
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Quorum node address

In the Node class of the Quorum Web3j. The String address what is? package org.web3j.quorum; import java.util.List; /** * Quorum node configuration class. */ public class Node { private final ...
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Public smart contract that calls Private contract API

In a private blockchain (e.g, quorum), assume that I have a peer X and peer Y. X has a private smart contract (A) and Y has a public smart contract B. Assume that A provides an API for Y in order to ...
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1answer
41 views

What are the differences between Monax/Hyperledger Burrow and Quorum?

Are there any significant differences between these protocols? Thank you for answering.
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Ethereum/Quorum Pluggable Consensus with Algorand Byzantine Agreement Protocol?

Can Quorum and Ethereum be possibly configured/modified to use Algorand Byzantine Agreement Protocol?
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Quorum & web3j: Transaction has failed with status: 0x0. Gas used: 0. (not-enough gas?)

I'm doing some play & test with Quorum. I'm using example 7nodes with docker. The network is up and my simple smart contract is deployed with a set and a get function. When I call the set function ...
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1answer
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truffle-contract: Contract has not been deployed to detected network (network/artifact mismatch)

I am running a private network and would like to use truffle-contract to interact with the contracts. Unfortunately it gives me this error: Error: Contract has not been deployed to detected network (...
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1answer
81 views

truffle-contract error: Number can only safely store up to 53 bits

I am using truffle-contract with a local quorum node and try to execute a smart contract method, but getting this error: Error: Number can only safely store up to 53 bits That's the way I do it: ...
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27 views

How to read data from external files in Quorum Blockchain?

I have a use case where we have implemented Quorum Blockchain using AWS. The smart contract was written in Solidity. Initially we randomized the valued by coding in Smart Contract however we now want ...
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1answer
58 views

How can a peer request another peer to invoke a function from his private contract

I build a permissioned network using Quorum, I have a peerA which has a private smart contract, another peerB that cannot invoke functions of the smart contract as it is private So, can peerB send ...
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1answer
56 views

Quorum Raft: Is the leader validates each transactions in the block before broadcasting it?

I read about how the raft consensus works in Quorum to reach consensus and broadcast blocks (https://github.com/jpmorganchase/quorum/blob/master/docs/raft.md). I don't know if the following is correct ...
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`etherlime deploy` fails with Error: invalid sender

I am trying to deploy a contract with etherlime to a private permissioned Quorum network: etherlime init --> OK etherlime compile --> OK etherlime deploy --> Error Error: Compilation ...
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truffle migration fails, but initial migration was mined

I am trying to deploy this contract on a private permissioned Quorum network. The migration fails on the 1_initial_migration process. If I try to repeat the process with: sudo truffle migrate --...
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How to `truffle migrate` to private permissioned network?

I am running a private permissioned network and would like to use Truffle v5.0.1 for deployment. I use it according to the documentation: Compile my project with truffle compile so that the ./build ...
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1answer
39 views

Quorum: permissioned-nodes.js and static-nodes.js

How do I proper use permissioned-nodes.js? According to this information: https://github.com/jpmorganchase/quorum/wiki/Security If the --permissioned flag is set, the node looks for a file named &...
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79 views

Quorum transaction not mined and no address

I am running a private Quorum chain consisting of 3 nodes with raft consensus. When I deploy a contract to the chain via web3 I get returned a hash and can then look up the transaction with the local ...
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1answer
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tm.ipc: no such file or directory (socket file to use for the private API / IPC)

I am following this tutorial to setup a Quorum cluster: https://medium.com/@shizekun/how-to-set-up-a-quorum-private-chain-with-raft-consensus-and-dynamic-membership-bf826f3927e5 But unfortunately I ...
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1answer
25 views

Not able to connect to Quorum node from Nethereum

I am not able to connect to Quorumchain using Nethereum. Below is my code and error response. I have verified and the port is open in the machine. I am running on a Linux machine, Ubuntu 18.04. I ...
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Transaction not mined error when deploying to quorum maker server

I get the following error when attempting to deploy my zeppelin erc20 token to a quorum server(used quorum maker). (master) $ node migrations/2_proj.js ``````` transactionHash ...
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Quorum :- metamask do not support privateFor feature of quorum

i got to know that metamask do not support privateFor because of which private transaction for quorum dapp was not behaving as expected. so, I can't use metamask for my quorum DApp to switch port and ...
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1answer
63 views

Relation between the number of block and transaction rate in Quorum

I want to know the relation between the number of blocks generated and the transaction send rate in quorum. I did some experiments on quorum with RAFT consensus, and I get (I invoked the same ...
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2answers
164 views

How can I trigger a quorum private smart contract deployment from my js client app?

My question follows directly this answer to a similar question. I need for my client app users to be able to trigger private contract deployment. I've tried using privateFor with both the web3 and ...
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2answers
88 views

Returning error message from smart contract

I am trying to return error messages from solidity. I have this contract: pragma solidity ^0.4.23; contract Simple { function arithmetics(uint a, uint b){ require(...
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1answer
42 views

Adding Application Security for Cakeshop (Quorum) on Azure?

Is there a way to set a password to the cakeshop UI when using Azure for Quorum deployment? In order to prevent Ethereum accounts being generated or smart contracts being deployed via the publicly ...
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1answer
109 views

How to connect Quorum with Metamask?

I'm trying to deploy smart contract on Private blockchain(quorum). And run the dapp on private blockchain. But I'm unable to connect the metamask with quorum network. The quorum is currently running ...
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How to SSH Quorum running on Azure VMs?

I have deployed a Quorum Network on Azure and now I would like to have ssh access. In the creation process I had to set a VM-user and a VM-password. But if I use them like this: ssh VM-user@Public-IP-...
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1answer
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How privacy can be ensured in smart-contracts?

When a smart-contract is created following an agreement between two entities, how the state of that contract (data) can be kept secret to only the two contractors? I heard about Quorum, but how ...
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Questions with Building a dapp using Quorum [closed]

I am working on a project to build a dapp for a trust system using Quorum, which needs a permissioned blockchain for data privacy. Only the admin, beneficiary, caregivers, case manager and authorized ...
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1answer
234 views

Send signed transaction from nodejs to private SmartContract using webjs in Quorum network not working

Context I have a quorum network mounted following the example of 7nodes. In node 1 I have deployed a smart contract privately, putting the public key of this ("BULeR8JyUWhiuuCMU/HLA0Q5pzkYT+...
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1answer
74 views

Quorum private transaction is being reverted by EVM

I had setup an quorum network using quorum maker (3 nodes). I tried to perform a public transaction and it worked. But when I tried to perform a private transaction it gets reverted by the EVM node:...
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1answer
108 views

Unable to interact with DApp deployed on quorum

I am unable to interact with contract using Dapp deployed on Quorum blockchain (using metamask). I am following "https://truffleframework.com/tutorials/building-dapps-for-quorum-private-enterprise-...
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1answer
76 views

Is there a way to prevent any client connected using web3.js to Quorum from deploying a contract?

I am planning on using Quorum for a permissioned setup,Is it possible to prevent anyone having a web client and connected to any quorum node deployed in the network from deploying a contract?
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How can I measure a function execution time based on Truffle?

I'm using truffle to test my smart contract written in solidity language deployed on the Quorum blockchain. I want to measure the execution time of the invocation of a function using truffle. Is ...
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Opening Smart Contracts on Quorum via json rpc api eth_sendtransaction for Integration Purposes

if I wish to integrate quorum blockchain with other platforms via the json rpc api eth_sendtransaction method, what other implications can there be? Assuming the smart contract built is secured and ...
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1answer
42 views

Passing data between two Ethereum networks

I have some IoT(Internet of things) nodes sharing the received data from sensors with each others. I partitioned them to 2 permissioned networks: Network 1 includes: X,Y,Z nodes trusting each other,...
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1answer
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In Quorum, is it possible to replicate a private smart contract to a new node after the contract is deployed?

This question is about Quorum. I noticed that the quorum tag is present on this site hence adding the question here. If this question should rather be asked elsewhere, please let me know. I am ...
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Quorum 7nodes example unable to attach to geth node 1,2,4,5,6,7 but node 3 is working

Quorum 7nodes example all of sudden gave fatal error unable to attach to remote geth. Problem: can't attach to geth node Every time I import metamask account to geth node (using personal.importRawKey(...
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Quorum 7node example when i try to import account1 of node1 using its key1 ciphertext i get wrong account address imported

I am trying to import account 1 of node1 of 7nodes quorum example using its key1 file which you can find here "https://github.com/jpmorganchase/quorum-examples/tree/master/examples/7nodes/keys". my ...
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2answers
99 views

How to import quorum 7 node accounts to metamask

I am new to quorum 7node example I have created a DApp I want to send transaction using metamask when I was using testrpc to connect with DApp i was able to see all 10 test accounts in metamask after ...
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1answer
147 views

How to connect Quorum nodes with Remix?

I'm trying to use the Quorum-examples/7nodes to test my contract. I followed the step on github and open a terminal to attach to node1. https://github.com/jpmorganchase/quorum-examples/tree/master/...
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1answer
69 views

External Access To A Private Etherium Blockchain

Background Info I have been playing around with Etherium and I have created a DAPP on the Etherium blockchain inside Azure Kubernetes. Everything up to this point has been a good experience but the ...
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1answer
119 views

how can I store a data in quorum smart contract that no one can see it [duplicate]

I want to store a number in smart contract that blockchain nodes should guess that number and send it to smart contract and then smart contract should compare it with data stored in it, and if they ...
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0answers
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Decentralized x509 standard ERC

I am looking at coming up with a ERC standard to define X509 standards. Understand there is ERC725, ERC 735. Wanted to know if there are any existing ERC standards for this?
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How to secure ethereum data at rest, in transit and in use? [closed]

How to secure ethereum data at rest, in transit and in use? Perhaps for data at rest through disk encryption? For in transit, through end to end HTTPS? Finally, data in use through the use of ...