[tahoe-dev] 100-year cryptography

[Zooko Wilcox-O'Hearn]

On Wednesday, 2010-03-10, at 17:10 , Zooko O'Whielacronx wrote:

> If you start to think that someone may be able to collide the  
> secure hash function that you used, you can use a better hash  
> function and generate new caps to all of your files and then start  
> using the new caps. As long as you do this *before* anyone  
> *actually* generated a collision for any of your files, you  
> preserve integrity.

Um, sorry I glossed over the distinction between collision and 2nd- 
pre-image there. Both are relevant. But it is time for me to catch a  
bus...

Regards,

Zooko