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Edited 16_security_privacy_ln.asciidoc with Atlas code editor

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kristen@oreilly.com 2021-11-19 11:59:57 -08:00
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16_security_privacy_ln.asciidoc
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@ -16,7 +16,7 @@ Unlike trivial scaling solutions like custodial Bitcoin banks, the Lightning Net
First, a privacy researcher would define a _security model_ that specifies what an adversary is capable of and aims to achieve.
Then, they would describe the relevant properties of the system and check whether it conforms to the requirements.
==== Process to Evaluate Privacy
=== Process to Evaluate Privacy
((("security and privacy","evaluation process for privacy")))((("security assumptions")))A security model is based on a set of underlying _security assumptions_.
In cryptographic systems, these assumptions are often centered around the mathematical properties of the cryptographic primitives, such as ciphers, signatures, and hash functions.
@ -80,7 +80,7 @@ Imagine you meet a person on a city street.
What is their anonymity set from your point of view?
If you don't know them personally, and without any additional information, their anonymity set roughly equals the city's population, including travelers.
If you additionally consider their appearance, you may be able to roughly estimate their age and exclude the city residents who are obviously older or younger than the person in question from the anonymity set.
Furthermore, if you notice that the person walks into the office of Company X using an electronic badge, the anonymity set shrinks to the number of Company X's employees and visitors.
Furthermore, if you notice that the person walks into the office of Company X using an electronic badge, the anonymity set shrinks to the number pass:[<span class="keep-together">of Company</span>] X's employees and visitors.
Finally, you may notice the license number of the car they used to arrive at the place.
If you are a casual observer, this doesn't give you much.
However, if you are a city official and have access to the database that matches license plate numbers with names, you can narrow down the anonymity set to just a few people: the car owner and any close friends and relatives that may have borrowed the car.
@ -523,7 +523,7 @@ Let's look at some of the relevant incentives:
In the early stages of the Lightning Network, many node operators have claimed that the earned routing fees do not compensate for the opportunity costs stemming from liquidity lock-up. This would indicate that operating a node may be driven mostly by altruistic incentives "for the good of the network."
This might change in the future if the Lightning Network has significantly larger traffic or if a market for routing fees emerges.
On the other hand, if a node wishes to optimize its routing fees, it would minimize the average shortest path lengths to every other node.
Put differently, a profit-seeker node will try to locate itself in the _center_ of the channel graph or close to it.
Put differently, a profit-seeker node will try to locate itself in the _center_ of the channel graph or close pass:[<span class="keep-together">to it</span>].
=== Practical Advice for Users to Protect Their Privacy