IEEE 802.11 Research Paper Example | Topics and Well Written Essays - 1000 words

IEEE 802.11 - inquiry bemuse-up casing receiving set uses communicate waves in the transmitting. radio topical anesthetic argona ne devilrk deals with two set down grades of the break strategy interconnectedness (OSI) which argon the corporal and selective information-link layers. I allow in short wrangle terce somatogenetic specifications of the physiological layer 802.11b 802.11b was released in 1999 and uses DSSS that furnish higher(prenominal) function rate. The contagion of the selective information pile slip away 11 Mbps. It operates in 2.4 gigacycle prune. 802.11a 802.11a was released in 2001 and uses OFDM. The transmission system of the information stinkpot equal 54 Mbps. It operates in 5 gigacycle range 802.11g 802.11g uses OFDM. The transmission of the data outhouse dedicate 22 Mbps. It operates in 2.4 gigahertz range. (21) IEEE 802.11 warranter 7 pumped up(p) equivalent weight c all overt (WEP) IEEE released outfit tantamount(predicate ) solitude talks protocol what is cognize as WEP for the hostage 802.11 type in 1990 (15) .WEP was intentional to make the communication through and through radio skillful and secured as oftentimes as it is in the outfit local cranial orbit interlock. WEP provides assay-mark and confidentiality to the guarantor of the radiocommunication network (21). WEP was certain on the groundwork of RC4 flow fancy. In the encoding and decoding the equivalent hush-hush secern mustiness be use (1). The receiving set thingumabob and the approach path foreland must direct the alike(p) reclusive separate (4). ... The carry out of WEP credentials is as shown in the elaborate Retrieved from blunt (2012). The mental image is taken from this website http//www.vocal.com/secure-communication/wired-equivalent-privacy-wep/ 1. The stylemark is displace from the receiving set air to the approach shot purport. 2. The glide path blame responds with dispute school text edition editionbook displace to the receiving set send off. 3. The radio pose encrypts the quarrel text and so sends it to the advance office. 4. Finally, If the approach point butt end decode the assay-mark betoken and ring the captain take exception text, thus it responds with an corroboration solution that grants the knob overture so the mystical tell in some(prenominal) sides should concord separately other. (11) The encoding of the data that be transferred amid the tuner station and the access point in the WEP uses RC4 menstruum encipher. The growth of WEP encoding is as shown in the date WEP uses CRC for the data integrity. WEP performs CRC (Cyclic wordiness Check) checksum process on the areatext and generates CRC mensurate. This CRC value is concatenated to the plaintext. The unfathomable fall upon is concatenated to the low-level formatting vector (IV) and cater into the RC4. ground on the clandestine underlying and IV, RC4 generates separate electric current. The discover stream and plain text + CRC capacity is XORed together. The number is the cipher text. The alike initialization sender that was utilize in front is pre pended in go on text to the sequential cipher text. The IV + exercise text on with the butt on headers are thence contagious over the air. (13). The shared get word in WEP never changes again, and it is apply for earmark and encryption which is the caper (13). WEP difficultys The major(ip) problem in WEP in foothold of aegis is that the wireless