EXTR的ElGamal协议对WCDMA鉴权的改进.pdf

33 8 2007 4 Vol.33 No.8 Computer Engineering April 2007 · · 2007 A TP393.02 EXTR ElGamal WCDMA ( 710069) WCDMA XTR ElGamal WCDMA WCDMA XTR WCDMA ElGamal Improved WCDMA Authentication Protocol Based on EXTR-ElGamal Cryptography LI Bin, HAO Kegang (Department of Computer Science, Northwest University, Xi’an 710069) AbstractThe old WCDMA authentication protocol, because of the use of symmetric encryption, is not undeniable and hides some trouble while working. It developed a new authentication protocol from the old one by using EXTR-ElGamal cryptography and modified for the protocol itself. The new protocol is undeniable and the hidden troubles in old one is overcome, while the experimental results show the reality of new protocol. This protocol is more secure than the old one and can be used into reality. Key wordsExtended XTR; WCDMA authentication; ElGamal cryptography 1 [4] AN SI (ECC) 3G ECC CPU XTR 3G XTRWCDMA 2G WCDMA3G 2 WCDMA [1] R5 WCDMA2Mbps WCDMA 3.5GHSDPA 14Mbps (AKAHE GSMA3 CDMA )HE CAVE SN AV (