Litecoin Mimble Wimble Protocol Bug Found
According to a recent test performed by Ivan Bogatyy, Litecoin’s Mimble Wimble privacy protocol can be unraveled using hired computing resources. The Litecoin (LTC) community and developers of Mimble Wimble denied that they created a faulty anonymous technology.
Litecoin co-founder, Charlie Lee, has affirmed that the protocol had a known vulnerability, but insisted that privacy could still be attained. However, the ultimate conclusion was that LTC could not compete with the privacy features offered by ZClassic (ZCL) and Monero (XMR).
“This limitation of MimbleWimble protocol is well known. MW is basically Confidential Transactions with scaling benefits and slight unlinkability. To get much better privacy, you can still use CoinJoin before broadcasting and CJ works really well with MW due to CT and aggregation. https://t.co/M5sx92nzlZ” – Stated Charlie Lee in a tweet posted on November 18, 2019.
Several users suggested that they could patch up the weakness in the future, but while also acknowledging the danger it poses:
“This is a well-known limitation of mimblewimble and is frequently referred to as its Achilles heel. The basic issue is most joining doesn’t occur until after the transaction has been broadcast. There are solutions in progress, including GrinJoin”- Posted by MF Grin (@MF_Grin) on November 18, 2019.
Bogatyy, the man that tested this vulnerability, claims that he hired $60 – worth of AWS resources to un-conceal the privacy of the protocol. He is of the opinion that this Mimble Wimble error cannot be fixed:
“The problem is inherent to Mimblewimble, and I don’t believe there’s a way to fix it. This means Mimblewimble should no longer be considered a viable alternative to Zcash or Monero when it comes to privacy.”
There have been responses online that countered Bogatyy’s claims:
“Numerous claims, including the title of the article itself, are factually inaccurate. On a high level, the article reads as a not-so-subtle take down piece that claims an attention-grabbing result. The conclusion of the article however, contains many logical leaps that are not substantiated via the network analysis exercise that is described,” stated Daniel Lehnberg from the Grin team.
Litecoin is currently trading at $55.93, down with 4.40% in the last 24 hours, being ranked at 6th place with a market cap of $3,563,739,467, and trading a sum of $3,302,968,717 in the past 24-hour period.
Featured image: forbes