rc4

what is rc4 ?

HI,

Its a stream cipher.
Read more at

[url]http://www.ncat.edu/~grogans/algorithm_history_and_descriptio.htm[/url]

Data.

Re: rc4

could someone explain rc4 or stream cipher in layman's terms ?
thanx !
[QUOTE][i]Originally posted by zaq [/i]
[B]what is rc4 ? [/B][/QUOTE]

hi,

A stream cipher encrypts an decrypts one bit ot byte at a time. The encryption and decryption are symmetric. RC4 is a stream cipher.

The other types of ciphers are called block ciphers. The encrypt and decrypt one block at a time.

usually block sizes are 64 bit and *28 bit to take advantage of *2 bit and 64 bit microprocessors.This is one of the reasons.

pls look at the rsa faq below

[url]http://www.rsasecurity.com/rsalabs/faq/2-*-5.html[/url]

hope this helps.

Regards,
Data.

DAMN IT - I NEED REALLY HELP

Hey my name is Nick.I have same problem as you man!My PC was under hackers attack too much times - especially by viruses.ALL MY IMPORTANT DOCUMENTS WAS STOLEN - I MEAN COPY OF ALL MY IMPORTANT DOCUMENTS WAS STOLEN.AND TODAY SOMEONE WRITE FROM MY CHATNAME IN GERMAN CHAT STRANGE THINGS - SUCH AS "I HATE JEWS" AND SOMETHING LIKE THIS.I AM JEW - AND I WAS REALLY SUPRISED HOW IT CAN POSSIBLE TO WRITE FROM MY NICKNAME STUPID THINGS - I EVEN DIDN'T SAW HOW WAS THE TEXT TYPED IN TEXT FORM!THERE WAS NOTHING - ONLY JUST WORDS FROM MY NAME!THE ADRESS OF THIS CHAT IS [url]http://www.anarchie.de[/url]
I JUST WAS AT THIS CHAT SOMETIMES - SOMETIMES THERE ARE REALLY NORMAL PEOPLES WITH WHICH YOU CAN TALK ABOUT ANYTHING.BUT TODAY WAS SOMETHING STUPID - MAYBE IT WAS SECURITY SERVICE OS UKRAINE [url]http://www.ssu.gov.ua[/url] or MAYBE THAT WAS HACKERS FROM ISP FARLEP
[url]http://www.dn.farlep.net[/url] OR MAYBE IT WAS HACKERS FROM USA,EUROPE,JAPAN - EVEN MAYBE THAT WAS GUYS FROM FBI [url]http://www.fbi.gov[/url] or from PENTAGON [url]http://www.pentagon.mil[/url]
I DON'T KNOW WHO WAS TYPING FROM MY NAME IN THE CHAT ROOM OF THE [url]http://www.anarchie.de[/url] website - BUT ONE THING I KNOW EXACTLY SUCH INCIDENTS MUST BE STOPED,DISCRIMINATION MUST BE STOPED!AND ADMINISTRATORS OF THIS WEBSITE SHOULD CARE MUCH ABOUT HACKERS AND FREEDOM OF WORD - THEY MUST HAVE RULES OF CHAT SYSTEM AND KICK WHO BRAKE THIS RULES!PLEASE I TALK TO ANYONE WHO CAN HELP ME - LETS STOP THIS FUCKING DISCRIMINATIVE SHIT CHAT!
THE ADRESSES OF ADMINISTRATORS OF ANARCHIE.DE WEBSITE ARE:
inetnum: 62.245.*68.64 - 62.245.*68.*5
netname: EDVBERATUNG-NET
descr: EDV Beratung Huber
country: DE
admin-c: BH***-RIPE
tech-c: BH***-RIPE
status: ASSIGNED PA
mnt-by: MNET-MNT
changed: [email]markart@m-net.de[/email] 20020*07
source: RIPE

route: 62.245.*28.0/*7
descr: M"net Telekommunikations GmbH
descr: Germany
origin: AS8767
mnt-by: MNET-MNT
changed: [email]vierke@m-net.de[/email] 20020828
source: RIPE

person: Benedikt Huber
address: EDV Beratung Huber
address: Franz-Josef-Str. *0
address: 8080* Muenchen
address: Germany
phone: +4* 8* **0 7*6 7*
fax-no: +4* 8* *40 *8* 0*4
e-mail: [email]bhuber@bhuber.de[/email]
nic-hdl: BH***-RIPE
mnt-by: MNET-MNT
changed: [email]markart@m-net.de[/email] 20020*07
source: RIPE

inetnum: 62.245.*68.64 - 62.245.*68.*5
netname: EDVBERATUNG-NET
descr: EDV Beratung Huber
country: DE
admin-c: BH***-RIPE
tech-c: BH***-RIPE
status: ASSIGNED PA
mnt-by: MNET-MNT
changed: 20020*07
source: RIPE

route: 62.245.*28.0/*7
descr: M"net Telekommunikations GmbH
descr: Germany
origin: AS8767
mnt-by: MNET-MNT
changed: 20020828
source: RIPE

person: Benedikt Huber
address: EDV Beratung Huber
address: Franz-Josef-Str. *0
address: 8080* Muenchen
address: Germany
phone: +4* 8* **0 7*6 7*
fax-no: +4* 8* *40 *8* 0*4
e-mail:
nic-hdl: BH***-RIPE
mnt-by: MNET-MNT
changed: 20020*07
source: RIPE

answer section
name type result
68.*68.245.62.IN-ADDR.ARPA.
PTR
host-62-245-*68-68.********.m-online.net.

authority section
name type result
*68.245.62.IN-ADDR.ARPA.
NS
ns*.m-online.net.

*68.245.62.IN-ADDR.ARPA.
NS
ns2.m-online.net.

additional section
name type result
ns2.m-online.net.
A
8.*.*8.2*2.IN-ADDR.ARP

Re: DAMN IT - I NEED REALLY HELP

hey nick, seems to me you took too many of those pills your doctor gave you.

Hi,

please only post once and under the appropriate section. A simple solution is to get a second hard disk and plug out the cable when you browse the internet(i.e to prevent your data from being erased or altered). If you are only worried about other people reading your information, you can use encryption products like pgp or digisecret. Invite your friends to some other chat. There are lots of chatservers out there.

Data.