Re: [cryptography] preventing protocol failings

2011-07-07 Thread Peter Gutmann
Sampo Syreeni de...@iki.fi writes: To my mind the difference seemed to be about shallow versus deep parsing. You can't really deep parse anything in BER with implicit tagging, You can deep-parse, you just need to apply some basic heuristics (e.g. if it's an octet string and the first byte is

Re: [cryptography] Bitcoin observation

2011-07-07 Thread Marsh Ray
On 07/07/2011 04:10 PM, Nico Williams wrote: In some (most?) public key cryptosystems it's possible to prove that a valid public key has a corresponding private key (that is, there exists a valid private key for which the given public key *is* the public key). That's used for public key

Re: [cryptography] Bitcoin observation

2011-07-07 Thread Jon Callas
On Jul 5, 2011, at 10:53 PM, Alfonso De Gregorio wrote: Let's assume there is a way to convince market participants that some Bitcoins has been destroyed, what would happen then? The value of the current Bitcoin supply would slightly increase, that's correct. Would market participants be

Re: [cryptography] Bitcoin observation

2011-07-07 Thread John Levine
It is my intuition that nation states of all stripes aren't going to like them. Some set of them would be happy to let the banks and speculators take care of it. Some of them would engage in actual hacking to hurt the currency, and the interesting property that destroying a bitcoin is a worthwhile