3 ms·
Are you sure he is correct in general? I suppose he supposed the length extension attack not on Bitcoin (because all Bitcoin data are self-synchronized) but on
by eimrine 3y ago
Are you sure he is correct in general? I suppose he supposed the length extension attack not on Bitcoin (because all Bitcoin data are self-synchronized) but on anything else using blockchain as a rainbow-table.
- adastra22 3y agoYes, in general anything being hashed that is subject to length extension ought to be double hashed. And most things are subject to length extension, often in surprising ways. So a good rule of thumb is to always double hash. But in this case, after 15 years of analysis, we can say with confidence that the double hashing bitcoin does is redundant.