KEY PROTECTING METHOD AND APPARATUS

专利名称：KEY PROTECTING METHOD AND

APPARATUS

发明人：LIN, Jingqiang,GUAN, Le,WANG,

Qiongxiao,WANG, Jing,JING, Jiwu

申请号：EP14884251.1申请日：20140827公开号：EP3113406A4公开日：20171101

摘要：An embodiment of the present disclosure provide a key protection method, viasetting that each core of the multi-core process may have one symmetric master key,dynamically obtaining the plaintext private key of the asymmetric algorithm via adecryption operation and using the Intel TSX, it may be ensured that the private key andthe intermediate variables used in the computation process may be stored in the cacheoccupied by the operation core only in terms of the hardware level, which may preventthe attackers from stealing the private key from the physical memory and ensure thesecurity of the implementation of the public-key cryptographic algorithm in thecomputer system. Further, even the OS may be compromised and the attacker maydirectly read the memory storing the key, since the Intel TSX mechanism may ensure theatomicity of the memory operation, the attacker cannot obtain the plaintext private key.Further, in this scheme, while the physical attacks and system intrusions are resisted, theother cores of the multi-core processor may perform the cryptographic operation, whichmay enhance the operation efficiency.

申请人：Data Assurance and Communication Security Research Center, Chinese

Academy of Sciences

地址：Minzhuang Road 89A, Haidian District Beijing 100093 CN

国籍：CN

代理机构：Gunzelmann, Rainer

更多信息请下载全文后查看