Explaining New PSBT and RBF Attacks - NADO 1
Ep. 01

Explaining New PSBT and RBF Attacks - NADO 1

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Episode description

Bitcoin Magazine’s Technical editor Aaron van Wirdum teams up with Bitcoin core contributor Sjors Provoost to explain Bitcoin one episode at a time. In the debut episode of The Van Wirdum Sjorsnado, Aaron and Sjors break down and explain Partially Signed Bitcoin Transactions (PSBT) and Replace By Fee (RBF) and some really tricky attacks that where recently discovered in Bitcoin.

Helpful Links:

PSBT Attack Vector:

RBF Attack Vector:

Chapters

00:00:00 Meet the hosts: hardware wallets and excessive fees
00:06:49 SegWit commits signatures to input amounts
00:07:34 Combining signatures from two misleading requests
00:11:57 Checking previous transactions fixes the fee attack
00:13:01 Taproot and signing all input information
00:17:07 Wallet compatibility and mitigation tradeoffs
00:20:54 Replace by fee and the fee market
00:24:57 Opt-in replacement rules and miner incentives
00:27:45 Replacement handling, wallet balances and denial of service
00:32:14 Security reporting and the scale of the problem

Support the Show!

Follow Bitcoin Magazine on Twitter @BitcoinMagazine

Follow Aaron van Wirdum @AaronvanW

Follow Sjors Provoost @provoost

Music:

Song Title: Segwit SoundsBy: The NakamoTonesAlbum: Citadel MusicProduced by: Bitcoin Audio

0:00Meet the hosts: hardware wallets and excessive fees
6:49SegWit commits signatures to input amounts
7:34Combining signatures from two misleading requests
11:57Checking previous transactions fixes the fee attack
13:01Taproot and signing all input information
17:07Wallet compatibility and mitigation tradeoffs
20:54Replace by fee and the fee market
24:57Opt-in replacement rules and miner incentives
27:45Replacement handling, wallet balances and denial of service
32:14Security reporting and the scale of the problem