Based on DES in cryptography, image scrambling is studied in this paper.
本文在DES加密的基础上，研究数字图像的置乱问题。
In some detail, the paper expounds the principle about simple power analysis (SPA) attacks against the general cryptography and a particular theory against data encryption standard (DES) algorithm.
详细地阐述了对通用密码系统实施简易功耗分析攻击(SPA)的理论基础和对DES算法攻击的特定理论，并提出了对SPA的改进算法。
This paper analyzes the security of electronic mail, designs an application scheme based on triple des and elliptic curve cryptography.
针对电子邮件在传输过程中存在的安全问题，提出了一种基于三重des和椭圆曲线密码体制的解决方案。
This paper analyzes the security of electronic mail, designs an application scheme based on triple des and elliptic curve cryptography.
针对电子邮件在传输过程中存在的安全问题，提出了一种基于三重des和椭圆曲线密码体制的解决方案。
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