What are peers and how a user enrolls into a specific peer

+1 vote
I am new to hyperledger fabric. I am using a sdk node with hyperledger fabric. I have 2 orgs and 4 peers. I have created a channel and have peer 2, peer 3, peer 4 joined to it. And there is another channel which have peer2, peer3 and org2 joined.

Now, if I enrolled a user, is this user enrolled to a specific peer? or it gets enrolled to a network? Supposing he he gets enrolled to the network, then he'll have access to all the channels, in that case how can we restrict them from outside channels?
May 3, 2018 in Blockchain by Johnathon
• 9,090 points
1,733 views

1 answer to this question.

+1 vote

In fabric, there is an admin, he manages the entities (the users, the peers..) that will be the part of the system. The admin also enrol an admin user for each organization, or he enrols the peers and users for each organization.

After enrolling each entity, the registry is done. When you do a registry aginst the certificate authority(CA), the CA generates a pair of keys, which is issued by the CA root. The user and the peer are thus enrolled to the CA. You need a peer to communicate with other peers and the orderer.

Also, you need a user to call the peer to genrate the transactions. When you create a channel, you have to define who is going to take part on it, i.e. you define which peers are going to interact among them. if your peer is not defined in the channel configuration, the acces for it will be restricted.

answered May 3, 2018 by Shashank
• 10,400 points
Can we make channel access to user level by creating multiple users.

peer will be part of multiple channels but user should have access to specific channel.

can we do so and how.

This can be done by specifying desired permissions for each org or orderer in the configtx.yaml file. The structure is as follows:

Channel:
    Policies:
        Readers
        Writers
        Admins

Here you have to set the Read, Write and Admin configuration by mentioning the name of the member. 

Complete description here.

Related Questions In Blockchain

+1 vote
1 answer
+1 vote
1 answer

What are the differences between the hyperledger and Blockchain?

To answer your first query.. Blockchain is ...READ MORE

answered Apr 5, 2018 in Blockchain by anonymous
3,932 views
0 votes
1 answer

Hyperledger Sawtooth vs Quorum in concurrency and speed Ask

Summary: Both should provide similar reliability of ...READ MORE

answered Sep 26, 2018 in IoT (Internet of Things) by Upasana
• 8,620 points
1,215 views
0 votes
1 answer

Invalid Batch or signature in Savtooth

This will solve your problem import org.apache.commons.codec.binary.Hex; Transaction txn ...READ MORE

answered Aug 1, 2018 in Blockchain by digger
• 26,740 points
708 views
+15 votes
5 answers
0 votes
1 answer

What are the differences between tendermint and hashgraph?

Hashgraph uses Superior distributed ledger technology. Hashgraph ...READ MORE

answered Apr 8, 2018 in Blockchain by Shashank
• 10,400 points
813 views
+1 vote
1 answer
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP