Difference between revisions of "Address reuse"

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== Problems ==
 
== Problems ==
 
=== Privacy ===
 
=== Privacy ===
Address reuse harms the privacy of not only yourself, but also others - including many not related to the transaction.
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Address re-use can impact user privacy, allowing anyone who sends or receives money to or from a particular address to see all of the transactions it is part of.
  
Every time a re-used address private key signs a fresh transaction, the receiving party can use the history of that address to discover information about that address and its owner.
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===Security===
 
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Security is also a concern as a thief only needs to gain access to a single key in order to compromise a wallet.
The relationship graph in a re-used address is powerfully-linked in that '''all''' of the inputs to that address are necessarily joined (via the spending authority of the private key) to all of its outputs.
 
  
 
==Attribution==
 
==Attribution==
 
This content is based on content sourced from https://en.bitcoin.it/wiki/Address_reuse under [https://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0]. Although it may have been extensively revised and updated, we acknowledge the original authors.
 
This content is based on content sourced from https://en.bitcoin.it/wiki/Address_reuse under [https://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0]. Although it may have been extensively revised and updated, we acknowledge the original authors.

Latest revision as of 05:28, 23 October 2020

Address reuse refers to the use of the same address for multiple transactions. It is an unintended practice, reducing the privacy and security of the participants of the transactions.

Most wallets use deterministic keychains and mask the generation of new addresses from the user making it easy and safe to maintain privacy.

Problems

Privacy

Address re-use can impact user privacy, allowing anyone who sends or receives money to or from a particular address to see all of the transactions it is part of.

Security

Security is also a concern as a thief only needs to gain access to a single key in order to compromise a wallet.

Attribution

This content is based on content sourced from https://en.bitcoin.it/wiki/Address_reuse under Creative Commons Attribution 3.0. Although it may have been extensively revised and updated, we acknowledge the original authors.