 question about punk buster? |
| UNDEAD 1 |
 02/09/06 11:09am
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#1
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Major General  Group: {MOB} Posts: 2753 Joined: January 17th 2006 Member No.: 1540 Xfire: UNDEADJAMES  |
i have always wonderd what md5 tools are? i see people getting kicked by pb all the time for it missing (today 9 times!) what is it?
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Replies(1 - 8)
| Druid |
02/09/06 1:17pm
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#2
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Major General  Group: Forum Member Posts: 3453 Joined: July 31st 2002 Member No.: 16 Xfire: mobdruid |
MD5 stands for Message Digest 5.
It's an algorithm that computes a 128-bit 32 hex character MD5 strings for each file. This way it can compare the files on the client to insure they haven't been changed. For example, lots of cheats work by hacking the the opengl32.dll file. So PB makes sure the file hasn't been changed. It also does this for every file in the COD directory to insure the files are stock. The magority of kicks are for ignoring MD5 checks. This isn't a result of the player doing anything wrong just a bad connection or packetloss. There for a while after the last patch came out lots of people were getting kicked for MD5 mismatch of uo_game_mp_x86.dll. This wasn't because the player was trying to do anything wrong but had mistakenly install the wrong patch. They installed the server patch not the client patch. Does that answer your question? -------------------- Not a word was spoken to contradict or disagree with S@bot when he called me a....
bully, dictator, snide, hypocrite, arrogant, smartass and lets not forget, according to him the way I act is reprehensible. Yet, you're going to censor my signature because it's inappropriate and might hurt his little feelings??? Sorry. don't think so QUOTE Druid had my admiration and even though he has always come across as an arrogant, snide and very many times a smartass in posts and pm's S@bot aka Little Silver |
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| blk96gt |
02/09/06 2:33pm
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#3
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 Colonel Group: {MOB} Posts: 1244 Joined: November 1st 2004 From: Nacogdoches, Texas Member No.: 948 Xfire: blk96gt |
It's pretty easy to cause an MD5 collision now. It can be done in a few hours now on most PC's. PB needs to start using something else.
-------------------- Idle hands spend time at the genitals, and we all know how much God hates that.
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| UNDEAD 1 |
02/09/06 7:15pm
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#4
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Major General Group: {MOB} Posts: 2753 Joined: January 17th 2006 Member No.: 1540 Xfire: UNDEADJAMES |
I have noticed alot of pb kicks ,how do you know when they are cheating? i used to get kicked for my ping on rein valley but when i refreshed my monitor (thanks to you guys and the forums) ive never had a problem.
but what im trying to say is ive never been kicked ,why are so many getting kicked by pb lately? one guy today was kicked 2 or 3 times. -------------------- |
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| ScrapyardBob |
02/09/06 7:17pm
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#5
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Major Group: {MOB} Posts: 814 Joined: January 6th 2006 Member No.: 1519 Xfire: scrapyardbob |
Yes, no, and probably not.
Dig back through the Slashdot archives for the past few months. While MD5 is getting weaker, it's still not quite as simple as that. (Those who wish to be in the know should subscribe to Bruce Schneier's monthly CRYPTO-GRAM e-mail newsletter. http://www.schneier.com/crypto-gram.html ) --------------------   |
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| UNDEAD 1 |
02/09/06 8:20pm
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#6
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Major General Group: {MOB} Posts: 2753 Joined: January 17th 2006 Member No.: 1540 Xfire: UNDEADJAMES |
Does that answer your question? [/quote]
a little ,im not to familiar with pb. thanks for the info druid -------------------- |
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| blk96gt |
02/10/06 12:19am
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#7
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Colonel Group: {MOB} Posts: 1244 Joined: November 1st 2004 From: Nacogdoches, Texas Member No.: 948 Xfire: blk96gt |
According to that article it only takes a few hours.
http://it.slashdot.org/article.pl?sid=05/11/15/2037232 Forgot the link to the source code and even a Windows binary. According to the guys who wrote it it will take about 45 minutes to find a collision on a 1.6Ghz Notebook PC. http://www.stachliu.com.nyud.net:8090/collisions.html This post has been edited by behemoth: 02/10/06 12:14am -------------------- Idle hands spend time at the genitals, and we all know how much God hates that.
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| Druid |
02/10/06 2:18am
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#8
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Major General Group: Forum Member Posts: 3453 Joined: July 31st 2002 Member No.: 16 Xfire: mobdruid |
The way PB uses MD5 doesn't apply to the point of the disputed weakness in MD5.
From the slashdot topic "Tampering a signed binary is only possible using a preimage attack" -------------------- Not a word was spoken to contradict or disagree with S@bot when he called me a....
bully, dictator, snide, hypocrite, arrogant, smartass and lets not forget, according to him the way I act is reprehensible. Yet, you're going to censor my signature because it's inappropriate and might hurt his little feelings??? Sorry. don't think so QUOTE Druid had my admiration and even though he has always come across as an arrogant, snide and very many times a smartass in posts and pm's S@bot aka Little Silver |
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| blk96gt |
02/10/06 5:23am
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#9
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Colonel Group: {MOB} Posts: 1244 Joined: November 1st 2004 From: Nacogdoches, Texas Member No.: 948 Xfire: blk96gt |
Ah ok. I don't know much about it. I just knew there were some algorithms out to cause collisions. Thanks for the correction.
-------------------- Idle hands spend time at the genitals, and we all know how much God hates that.
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