RE: [EMAIL PROTECTED]: Skype security evaluation]

2005-11-13 Thread Marcel Popescu
Do you have some articles about these protocols? The authoritative reference for TLS is the TLS RFC (http://www.ietf.org/rfc/rfc2246.txt). The authoritative reference for IPsec is of course the IPsec RFC (http://www.ietf.org/rfc/rfc2401.txt). As to why they wouldn't use these as they stand,

RE: [EMAIL PROTECTED]: Skype security evaluation]

2005-11-03 Thread Marcel Popescu
From: [EMAIL PROTECTED] [mailto:owner- [EMAIL PROTECTED] On Behalf Of Peter Gutmann I can't understand why they didn't just use TLS for the handshake (maybe YASSL) and IPsec sliding-window + ESP for the transport (there's a free minimal implementation of this whose name escapes me for use by

RE: That's gratitude for ya...

2005-02-17 Thread Marcel Popescu
From: [EMAIL PROTECTED] [mailto:owner- [EMAIL PROTECTED] On Behalf Of Rich Salz The other day I sent Amir Herzberg a private note saying I thought his new tool was pretty neat, and though I'm sure he's heard it a lot, thanks. He said nope, nobody else has said it, and I was stunned. My

RE: Cryptography Research wants piracy speed bump on HD DVDs

2005-01-05 Thread Marcel Popescu
From: [EMAIL PROTECTED] [mailto:owner- [EMAIL PROTECTED] On Behalf Of Adam Back Sent: Wednesday, December 22, 2004 11:48 PM I would think the simplest canonical counter-attack would be to make a p2p app that compares diffs in the binary output (efficiently rsync style) accumulates enough

Approximate hashes

2004-09-01 Thread Marcel Popescu
I am trying to build a Windows anti-spam thingy; it's supposed to sit in between the mail client and the outer world, and indicate through mail headers whether the incoming mail has a valid hashcash http://www.hashcash.org/ coin (and, of course, to automatically add hashcash to outgoing emails).

Re: Approximate hashes

2004-09-01 Thread Marcel Popescu
From: Marcel Popescu [EMAIL PROTECTED] Hence my question: is there some approximate hash function (which I could use instead of SHA-1) which can verify that a text hashes very close to a value? So that if I change, say, tabs into spaces, I won't get exactly the same value, but I would get

Re: Approximate hashes

2004-09-01 Thread Marcel Popescu
From: Hal Finney [EMAIL PROTECTED] As you are probably aware, existing hashcash implementations do not base the stamp on the message content. Instead they only lock the stamp to the receiver's email address. Then the receiver keeps a list of the hashcash stamps he has seen recently, to

Re: Looking for mirror (or: better) sites to host my crypto/security lectures

2004-05-25 Thread Marcel Popescu
From: Amir Herzberg [EMAIL PROTECTED] So, if anyone has a reliable ftp server where I could post the lectures (and update them via ftp), please let me know. You might also want to look into installing a tracker and sharing them with BitTorrent http://bitconjurer.org/BitTorrent/ - it should