Re: [cryptography] Security Pop-Up of the Day

2011-09-22 Thread Peter Gutmann
ianG i...@iang.org writes: C.f., revocation is broken. The disablement of OCSP checking has been ... e widely suggested. Which leads to a curious puzzler; if it doesn't work for users, who does it work for? Ah, the cynicism :P There are a number of revocation vendors who have (or had, a

Re: [cryptography] Security Pop-Up of the Day

2011-09-22 Thread ianG
On 22/09/11 09:37 AM, James A. Donald wrote: On 2011-09-22 8:20 AM, Joe St Sauver wrote: Understood that would be the zipless ideal, but how would the binding of the private/public keypair to the email address occur then, eh? Well, it wouldn't, in those terms, you need to unwrap the judo flip

Re: [cryptography] Math corrections

2011-09-22 Thread ianG
Hi Arshad, It occurs to me that we're almost there. On 22/09/11 02:30 AM, Arshad Noor wrote: Thirdly, lets assume that the compromised CA has *explicitly* entered into a cross-certification agreement with one or more other TTP CAs. Right, they got themselves listed by the browsers, who hid

Re: [cryptography] Security Pop-Up of the Day

2011-09-22 Thread Paul Walker
On Thu, Sep 22, 2011 at 09:37:42AM +1000, James A. Donald wrote: Email client generates private/public keypair. Sends public key to CA server. CA server certifies that the owner of the private key corresponding to this public key is capable of receiving email at the address, emails

Re: [cryptography] code signing a nuisance?

2011-09-22 Thread Jeffrey Walton
On Thu, Sep 22, 2011 at 1:32 AM, Chris Palmer snackypa...@gmail.com wrote: On Sep 21, 2011, at 10:11 PM, M.R. wrote: Please look into how code signing on Android works and what it means. A quick summary would be appreciated, especially on the meaning part. Google: [ android code signing ]

Re: [cryptography] Another data point on SSL trusted root CA reliability (S Korea)

2011-09-22 Thread Bushmanov Romanov
Let's be honest, without any methamatical/design/architectural assumptions, about the current PKI practical context. One of the weakest links of PKI is trust delegation to some sort of governement based legislated system. As said, somewhere on this maling list, CA's are companies in those same

Re: [cryptography] SSL is not broken by design

2011-09-22 Thread Peter Gutmann
Ben Laurie b...@links.org writes: Well, don't tease. How? The link I've posted before (but didn't want to keep spamming to the list): http://www.cs.auckland.ac.nz/~pgut001/pubs/pki_risk.pdf Peter. ___ cryptography mailing list

Re: [cryptography] Another data point on SSL trusted root CA reliability (S Korea)

2011-09-22 Thread Ralph Holz
Hi, study this more carefully and sooner as possible. SSL Observatory from EFF is a step forward but we need more. Their distributed observatory is probably going to help much here, but I can offer the data sets from our paper. I'll put the paper online tomorrow and paste the link here. 1 -

Re: [cryptography] Another data point on SSL trusted root CA reliability (S Korea)

2011-09-22 Thread Bushmanov Romanov
The way you position yourself in the network infra-structure is of very importance when doing data collection. Users of a given ISP may have rogue certificates while others at the same country but another ISP may not. We as researchers need to position ourselves at different network scopes in

Re: [cryptography] Nirvana

2011-09-22 Thread Nico Williams
On Sun, Sep 18, 2011 at 11:22 AM, M.R. makro...@gmail.com wrote: On 18/09/11 10:31, Ian G wrote: On the other hand, a perfectly adequate low-level retail transaction security system can best be achieved by using a trusted-third-party, SSL-like system. That's a marketing claim. Best ignored

Re: [cryptography] Security Pop-Up of the Day

2011-09-22 Thread James A. Donald
On Thu, Sep 22, 2011 at 09:37:42AM +1000, James A. Donald wrote: Email client generates private/public keypair. Sends public key to CA server. CA server certifies that the owner of the private key corresponding to this public key is capable of receiving email at the address, emails certificate

Re: [cryptography] Security Pop-Up of the Day

2011-09-22 Thread James A. Donald
On Thu, Sep 22, 2011 at 09:37:42AM +1000, James A. Donald wrote: Email client generates private/public keypair. Sends public key to CA server. CA server certifies that the owner of the private key corresponding to this public key is capable of receiving email at the address, emails