计算机应用
計算機應用
계산궤응용
COMPUTER APPLICATION
2009年
11期
2948-2951
,共4页
组播%双线性对%密钥生成中心%组公钥
組播%雙線性對%密鑰生成中心%組公鑰
조파%쌍선성대%밀약생성중심%조공약
multicast%bilinear pairing%Key Generation Center (KGC)%group public key
应用公钥广播加密进行安全组播的难点是如何更有效地权衡实现代价和安全性.通过引入身份标志区分各个接收者,并利用一组接收者的身份标志代替一般公钥广播加密方案中的组公钥,缩短了系统公钥参数的长度.将新的公钥广播加密方案应用到安全组播通信的过程表明,该方案有效降低了计算和通信代价,且达到了抗选择密文攻击的语义安全性.
應用公鑰廣播加密進行安全組播的難點是如何更有效地權衡實現代價和安全性.通過引入身份標誌區分各箇接收者,併利用一組接收者的身份標誌代替一般公鑰廣播加密方案中的組公鑰,縮短瞭繫統公鑰參數的長度.將新的公鑰廣播加密方案應用到安全組播通信的過程錶明,該方案有效降低瞭計算和通信代價,且達到瞭抗選擇密文攻擊的語義安全性.
응용공약엄파가밀진행안전조파적난점시여하경유효지권형실현대개화안전성.통과인입신빈표지구분각개접수자,병이용일조접수자적신빈표지대체일반공약엄파가밀방안중적조공약,축단료계통공약삼수적장도.장신적공약엄파가밀방안응용도안전조파통신적과정표명,해방안유효강저료계산화통신대개,차체도료항선택밀문공격적어의안전성.
The difficulty of utilizing public key broadcast encryption in secure multicast is keep balance between implementation cost and security. Taking identity to differentiate each receiver, and using a group of identities instead of group public key in general public key broadcast encryption schemes, the length of system public key parameters was shorten. The procedures of secure multicast communications utilizing the new scheme show that the new scheme is efficient in decreasing the cost of computation and communication, and reaches the semantic security that can fight against chosen ciphertext attack.
