摘要
椭圆曲线加密算法是目前已知的公共密钥体系中加密强度最高的一种算法,为了将其破解,采用边信道攻击,即通过对密码机在加密过程中的功率变化的分析来尝试获取密钥信息,从而绕过了从数学上破译椭圆曲线密钥极其困难的问题。所搭建的实验平台,利用示波器探测正在运行加密程序的设备,对其中进行差分功率分析,从而找到加密规则。实验结果验证了所采用方法的有效性。
Elliptic-curve encryption algorithm is currently known as the best algorithm in the public-key crypto-system. In order to break it, a side-channel information attack is designed and used. With near-field probe to measure the power traces generated by the chip, the relation between the power traces and secret key is tried to find out. In this way, the mathematical problems can be avoided. In the experiment, oscilloscope is used to ac-quire the data from the crypto device and then to analyze them. From the differential power analysis, the secret key may be found. The experiment shows that the side-channel attack could work effectively.
出处
《通信技术》
2014年第9期1062-1065,共4页
Communications Technology
关键词
椭圆曲线加密
密钥
破解
边信道攻击
elliptic curve encryption
secret key
decipher
side-channel attack
