Difference between revisions of "Decentralized Mailing List"

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A [[Mailing List]] without the requirement of a central "authority". Sometimes called Chan (short for channel) because they usually focus on a subject which usually is the password for the deterministic address too.
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A [[Mailing List]] without the requirement of a central "authority". Sometimes called Chan (short for channel) because they usually focus on a subject which also is the password for the deterministic address too.
  
 
== Issues with regular Mailing Lists ==
 
== Issues with regular Mailing Lists ==
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== Creation ==
 
== Creation ==
Creating a decentralized mailing list required the user to generate a key, he may either generate a random address and share the Address block from keys.dat or create a deterministic address and share the settings he made with other users.
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A DML can be created in the File menu with the Option "Join / Create chan". A Passphrase must be entered and the address is generated.
A client then subscribes to his own address.
 
  
 
== Usage ==
 
== Usage ==
Decentralized lists are reached by broadcasting a message from the decentralized address itself, having the disadvantage of not getting own messages in the inbox, only replies to it, since clients ignore messages they sent themselves. Clients who have generated such an address cannot send messages to it directly so if somebody is required to proof, he sent a specific message, he needs to sign all his messages with a third party application.
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A DML can be joined by opening the "Join / Create chan" window and entering the label and the address the user wants to join.
  
 
== Issues with Decentralized Mailing Lists ==
 
== Issues with Decentralized Mailing Lists ==
If a decentralized mailing list is set to operate as a regular mailing list, a client will broadcast messages sent to it by an external address, causing all clients to receive the messages twice. This allows people to flood the address and make it unusable.
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Since all users share the same address it cannot be easily verified, who sent a message.
'''Never set an address used for decentralized mailing as a Mailing List'''.
 
  
 
Spam cannot be blocked on address base, since everyone shares the same sender address.
 
Spam cannot be blocked on address base, since everyone shares the same sender address.
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== Updating ==
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If a user was a member of a DML before 0.3.5 came out, he might want to update the address to a DML.
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To do so, first of all the subscription needs to be removed in the GUI, after that, the [[keys.dat]] needs to be edited and the line "chan = true" needs to be inserted into the address block that should be a DML.
  
 
== Example Address ==
 
== Example Address ==
It is created by regenerating a deterministic address with the passphrase "general" (without quotes). Address Version is 3 and the stream Number is 1. The field "Do extra work" must not be checked, resulting in the Address: '''BM-2DAV89w336ovy6BUJnfVRD5B9qipFbRgmr'''. This address has to be added to the subscription list and is now ready to use. Messages are broadcasted from the address, not sent to it. When replying to a message, the reply has to be made as a broadcast itself.
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Passphrase: '''general''', Address: '''BM-2DAV89w336ovy6BUJnfVRD5B9qipFbRgmr'''.
The [[Address Block]] should look like this (it may have additional entries):
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The [[Address Block]] of a DML should look like this (it may have additional entries):
  
 
<pre>
 
<pre>
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enabled = true
 
enabled = true
 
decoy = false
 
decoy = false
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chan = true
 
privsigningkey = 5Jnbdwc4u4DG9ipJxYLznXSvemkRFueQJNHujAQamtDDoX3N1eQ
 
privsigningkey = 5Jnbdwc4u4DG9ipJxYLznXSvemkRFueQJNHujAQamtDDoX3N1eQ
 
privencryptionkey = 5JrDcFtQDv5ydcHRW6dfGUEvThoxCCLNEUaxQfy8LXXgTJzVAcq
 
privencryptionkey = 5JrDcFtQDv5ydcHRW6dfGUEvThoxCCLNEUaxQfy8LXXgTJzVAcq

Revision as of 12:19, 1 August 2013

A Mailing List without the requirement of a central "authority". Sometimes called Chan (short for channel) because they usually focus on a subject which also is the password for the deterministic address too.

Issues with regular Mailing Lists

Even if Bitmessage is a decentralized p2p network, mailing lists require the client who operates the list to be online, creating a Single Point of Failure. Decentralized lists circumvent this issue with everyone having the private keys to the Address, on the cost of signing. In a centralized list, it is known, who sent a mesage, in a decentralized, this is only possible with additional measurements (Hash tagging, PGP). Decentralized lists however cannot be clogged up with large messages because POW is only done by the sending client.

Creation

A DML can be created in the File menu with the Option "Join / Create chan". A Passphrase must be entered and the address is generated.

Usage

A DML can be joined by opening the "Join / Create chan" window and entering the label and the address the user wants to join.

Issues with Decentralized Mailing Lists

Since all users share the same address it cannot be easily verified, who sent a message.

Spam cannot be blocked on address base, since everyone shares the same sender address.

Updating

If a user was a member of a DML before 0.3.5 came out, he might want to update the address to a DML. To do so, first of all the subscription needs to be removed in the GUI, after that, the keys.dat needs to be edited and the line "chan = true" needs to be inserted into the address block that should be a DML.

Example Address

Passphrase: general, Address: BM-2DAV89w336ovy6BUJnfVRD5B9qipFbRgmr. The Address Block of a DML should look like this (it may have additional entries):

[BM-2DAV89w336ovy6BUJnfVRD5B9qipFbRgmr]
label = general
enabled = true
decoy = false
chan = true
privsigningkey = 5Jnbdwc4u4DG9ipJxYLznXSvemkRFueQJNHujAQamtDDoX3N1eQ
privencryptionkey = 5JrDcFtQDv5ydcHRW6dfGUEvThoxCCLNEUaxQfy8LXXgTJzVAcq

Address List

A list of addresses can be found at the forum.