vpnlecture.html

黑客培训教程

<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the above scenario is simply 
called</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Mikkkeee&gt; damn mad ppl are awake for this 
lecture, lol</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; symetric encryption</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; PhrostByte 
([e-mail]) has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; there is also</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; aysmetric encryption( w/o 
symetry)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; which i will describe later</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; another term is cipher text , this 
is the data being encrypted</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; Encrytipon is the act of 
transforming clear text into cipher text</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; normally a key has to be provided 
along w/ the cipher textt</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; this is a simple formula those 
describles the encrytion processs</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- PhrostByte 
([e-mail]) has left #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; PhrostByte 
([e-mail]) has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; ciphertext= f (clear-text, K1)</P>
<P style="MARGIN-BOTTOM: 0cm">&gt;Mikkkeee&lt; whats up</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; whereis f=algorithm,K=Key </P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; so</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; suppose you had the word</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; fag</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; whoops</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; i should be PC</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the word toy</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; toy =clear-text</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; algorithm will be add 3 letters to 
each letter</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; whoops</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; algorithm is addletters</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; while</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the Key is add 3 letters</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; so</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- linuxlogic has quit (Ping timeout: 180 
seconds)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; cipher= add-letters( toy , 3)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; result would be</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; wrb= addletters( toy, 3)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; and</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; decryption would do the 
oppositte</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; removeletters( wrb ,3) = toy</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; simple eh</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; ok</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; definition </P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- Phaedrus has quit (Read error: 104 
(Connection reset by peer))</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; for decryption</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; is</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; Phaedrus (bar@PSBfMieMHWU.128.164.62.O) has 
joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- Zomart has quit ()</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the process of taking the cipher 
text and translating it into clear text..... ( btw this requires a key also)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; what i describe above</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; is a bloated ex. of symentic 
encrption</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- syme_ has quit (Argh! Learn how to fucking 
spell or piss off and die.)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; since there are 56 bit</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; bits</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; there are 2^56 possible keys</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; or</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; about 72x10^12 keys</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; MIT says</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; an average dude with 400 bucks 
would take 38 years to crack regular des encrption</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; however US Governemnt with 
300million takes 12 seconds</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; so</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; an alternate DES was 
developped</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; where</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the data is Encrypted with Key1 
then decrypted with Key2 and reecrpted with Key1</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; thus make the totaol key size to 
56x2</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; theres even another type of 
DES</P>
<P style="MARGIN-BOTTOM: 0cm">--- Mikkkeee sets mode +R #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; called 3des where 3 different Keys 
are involved</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Chris&gt; --- Chris sets mode +R Chris</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; K1 encrypts, k2 decrpts,k3 
encryps</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Chris&gt; ;)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; and the process is reversed on the 
decryption end</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; thers another type of encrption 
called Asymetric .. but i'll first take questions again</P>
<P style="MARGIN-BOTTOM: 0cm">--- simprix sets mode -m #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;simprix&gt; any questions</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; ha</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; i dont think anybody is 
listening</P>
<P style="MARGIN-BOTTOM: 0cm">* Lunarcade stirs</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Mikkkeee&gt; damn place is packed</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;b0ttyburp&gt; we are listening</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; SpiderMan ([e-mail]) 
has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">--- ChanServ gives channel operator status to 
SpiderMan</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;simprix&gt; im listening</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;b0ttyburp&gt; *we are</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;snidx2&gt; listening</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Mikkkeee&gt; sup spider</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;SpiderMan&gt; hey</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;LiquidCrystalDismay&gt; watching</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;simprix&gt; you are just explaining ut very 
well</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;b0ttyburp&gt; i can say WE cos we have a royal 
family :O)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Mikkkeee&gt; ;)</P>
<P style="MARGIN-BOTTOM: 0cm">* Phaedrus is more reading than anything</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;b0ttyburp&gt; simprix: ur correct</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; lemme just finish up then</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; wityh asymetric encryption</P>
<P style="MARGIN-BOTTOM: 0cm">--- simprix sets mode +m #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- ldh1 has quit (Your explaining it horribly. 
I'm scarred for ever.)</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; [RaFa] (~[e-mail]) 
has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; my fingers are terrible tired from 
typing</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Mikkkeee&gt; sup rafa</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; Asymmetric involves a public and a 
private key</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; its typically used for 
authentication</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Mikkkeee&gt; ;)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; b/c of the high packet payload 
(due to a lot of keys) it doesnt provide an efficient method of data transport 
for time</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; critical data</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; this type is 3des</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; where 3 diff. keys are used</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; it relies on complex mathamatical 
algorithms that mainly depend on large prime numbers....</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; trinity (mec@sV6ppNXc5Bss.203.197.150.O) 
has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the encryption processs is simliar 
in equation for tot that of symetric encryption</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; where</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- phatal has quit (Ping timeout: 180 
seconds)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; Encryption = ciphertext= 
shift-right ( clear-text , 3)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; but the</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; decryption uses a different 
relation similar to</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; decryptions = cleartext= 
shift-right (cipher-text, -3)</P>
<P style="MARGIN-BOTTOM: 0cm">* Chris is away: brb</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the relations ship between key 1 
and key 2 is K1= (-1)K2</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; as with symmetric K1=k2</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; ok</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; now when deploying VPN</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; keep in mind</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; what sorta encryption algorithm 
you are going to impart in ur VPN</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; if you are on a slow WAN link</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; you probably want to limit ur 
asymetric encryption to just authentication</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; then transfer private keys for 
symetric encryption</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; however</P>
<P style="MARGIN-BOTTOM: 0cm">--- Mikkkeee gives channel operator status to 
[RaFa]</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; well</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; one sec</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; phatal 
([e-mail]) has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; my bad silly cat</P>
<P style="MARGIN-BOTTOM: 0cm">--&gt; bluhayz 
([e-mail]) has joined #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; ok symetric is more efficient 
primarly b/c its smaller pay load</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; key size is small</P>
<P style="MARGIN-BOTTOM: 0cm">--- Mikkkeee gives channel operator status to 
bluhayz</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; thus its more efficient for bulk 
transfers </P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; and for slow wan links</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; Aysmetric is exacly the 
opposite</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; oh yea</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; CBC</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; outer-cipher block chaining is 
used in VPN packets</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; to input spoiler data in the 
packet</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; so that repetative data does 
become pattern encrypted</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; like someone is using a 
website</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;-- snidx2 has quit ()</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; the pass is resent over and over 
each time they view anothe rpage in that secure domain</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; well thats it</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; :-D</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; i know i prolly went into 
encryption to much</P>
<P style="MARGIN-BOTTOM: 0cm">--- simprix sets mode -m #bsrf</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;bluhayz&gt; it's over?</P>
<P style="MARGIN-BOTTOM: 0cm">* b0ttyburp clap "" clap """ clap """ :O)</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; but its important for 
understanding the transfer of VPN data</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; hehe</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; if you wanna put it all 
together</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; you can</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;_Jonah_&gt; i'm so tired from typing</P>
<P style="MARGIN-BOTTOM: 0cm">&lt;Phaedrus&g