[Cryptography] blake2b 160

[jamesd at echeque.com]

On 31/12/2018 02:23, John Pacific wrote:
> Blake2b160 only has half the collision security as blake2b256. Those are 
> 2**80 and 2**128.
> 
> I would consider 2**80 within "vulnerable range" of a nation state. 

Well I would consider you full of hot air, unless you actually do some 
resource calculations

Obviously a nation state can calculate 2^80 hashes easily enough, but in 
order to find which two of them can collide would need to store and sort 
2^80 hashes, which looks to me to be far beyond the resources of any 
present nation state, or the likely resources of any nation state in the 
reasonably foreseeable future.