（1）正规卡 文摘卡 （2）自制卡
在基于非对称加密系统中的RSA算法和MD 5报文摘要算法上，提出了一种基于IC卡的数字签名方案。
Based on RSA algorithm of unsymmetrical cryptographic system and MD5 message-digest algorithm, the paper presents a digital signature scheme based on IC card.
文摘：塔河油田水平井钻井过程中，曾多次发生卡钻事故。
Abstract: Several Sticking accidents happen in the course of drilling horizontal Wells in Tahe Oilfield.
这份“里卡迪文摘”手稿大约写于1580年，也因此这宗轶事很可能是杜撰的。
This ExcerptaRiccardi manuscript has been dated around 1580, and therefore the anecdote is probably apocryphal.
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