Litecoin MimbleWimble October Recap Replace

This replace was written and supplied by Litecoin MimbleWimble lead developer David Burkett.



Quarkslab has completed their audit of the code! 🚀

I’ll be assembly with them Friday to debate their findings. After that, they’ll work on releasing the audit report in a weblog submit, which I sit up for sharing with you all.


Because you’ll have the ability to learn the total report as soon as they share their weblog submit, I gained’t dive too deeply into the findings right here. However at a fast look:

There was one essential challenge discovered that resulted from a mistake whereas merging the MWEB code & v0.21.1 code collectively. So when copying the modifications into the most recent launch code, I missed a small, however essential line of validation code that would’ve been exploited by a malicious attacker to trigger severe disruptions to the chain 😳

This tells us…

  1. We might actually profit from higher purposeful take a look at protection round our validation logic to verify we might catch comparable points ourselves in future releases.

  2. We must always take into consideration including some processes we will observe to reduce the opportunity of this taking place. That would imply documenting all modifications, or having 2 folks carry out the merge individually then evaluating outcomes, or a change to how we method the code opinions.

  3. The audit was a extremely good concept (thanks Quarkslab!)

There have been additionally some smaller findings, and a few nice ideas for the way we might enhance the standard and security of the code. Total, they had been impressed with the code high quality, which was thrilling to listen to 🥳

v0.21.1 (Taproot) Launch

The launch course of 5 we inherited from bitcoin could be fairly painful. It makes use of gitian 4 to construct repeatable and deterministic binaries from the supply code. Because of this a number of folks can all construct the code on completely different machines (and even completely different working programs) and nonetheless get the identical precise launch binaries. We will then all evaluate the outcomes after which signal the discharge, certifying that all of us agree that the printed launch is protected & correct.

There’s a variety of magic concerned to make this work, which ends up in a time-consuming & usually irritating expertise (particularly for n00bs like me). So I actually dragged my toes on this one 😬
. I lastly pressured myself to push by means of this just a few days in the past, and after combating with some outdated scripts, was capable of construct the entire binaries efficiently. I’ll end signing these tomorrow and hand them off for the opposite builders to repeat the construct & confirm outcomes.

MWEB Testnet

After plenty of guarantees after which take-backs, I’ve lastly determined to launch a binary that enables non-technical customers to check out the MWEB testnet. I solely have the home windows launch obtainable proper now, however I’ll work on getting binaries for Mac OS X on Friday. Linux customers can construct their very own, as a result of I’m drained 😝

Hyperlink: MWEB Testnet Launch 26

Right here’s my gpg key 8 if you happen to’d prefer to confirm the binaries first (you must). I’ll add directions on how to do this on the discharge web page when I’ve a while.

There’s no installer, as a result of I didn’t need anybody by accident changing their precise litecoin pockets, so to make use of it:

  • Obtain (and confirm) the zip file
  • Extract the litecoin-63fe928e4e8a folder
  • Discover and run litecoin-qt.exe from contained in the bin folder

This can default to utilizing the MWEB testnet, which you’ll be able to inform by the off-colored emblem and the [mwebtest] within the title bar. These use mwebtest cash, not precise litecoin cash. So pleeease don’t attempt to use it with actual cash.

You’ll both need to mine a block to get mwebtest cash (you may CPU mine a block very quickly), or discover somebody to offer you some. If anybody is keen to setup a faucet, I’ve acquired a ton of cash you may have 🙂

Additionally, if somebody seems like writing a information for the way to create stealth addresses, ship to and obtain from them, and the entire enjoyable stuff that goes together with it, you’d be my new favourite particular person.

Remaining Schedule

You’re just about again to only ready on me once more ⏱
whereas I end making use of audit ideas after which pushing by means of the tedious technique of merging, coordinating remaining opinions, writing launch notes, and at last kicking off the beloved gitian builds. I don’t know precisely how lengthy that may take, however rumor has it that it will increase by a full day for each individual that asks me 😜

What a protracted journey this has been 😅

P.S. 132 is updated.

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