IBC加密算法深度分享

IBC加密算法深度分享



 

华信安创CTO  程朝辉 

华信安创CTO 程朝辉首先介绍了公开密码体制与Pairing的历史，包括Diffie-Hellman算法、椭圆曲线密码(ECC)等，并对比了PKI和IBC密码的优势对比，以及中国IBC标准SM9。程朝辉表示，目前国外的IBC加密已经产业化，应用于云计算的密钥管理、邮件保护、3G多媒体层保护等等。

IBC密码采用用户的唯一性身份标识，包括邮件地址、手机号码、QQ号码等都可作为用户的公钥，简化了公钥和用户真实身份的关联过程，解决公钥证书在应用中使用困难的问题。由于IBC密码体系更加高效，导致整体的TCO成本比PKI低2/3，这促使了IBC密码更广泛的普及。

程朝辉表示，到目前为止最快的Pairing是2008年密码学界提出的最优Pairing，经过十年时间，我们取得非常巨大的进步。1993年的时候，利用Pairing攻击ECC的时候，Pairing需要几分钟，而在2012年254位的Pairing运算需要几毫秒。快速计算Pairing是构建可以使用的密码系统非常重要的基础。

在国外IBC加密已经获得商业上的成功，比如说Voltage，这家公司构建了互联网上最大的加密邮件平台，目前为止分发了一亿把钥匙。

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