With various application backgrounds in electronic commence, a research on digital signatures having different features is not only necessary but also important.
面对电子商务中各种各样的应用背景，研究具有不同特色的数字签名更具现实意义。
With various application backgrounds in electronic commence, a research on digital signatures having different features is not only necessary but also important.
面对电子商务中各种各样的应用背景，研究具有不同特色的数字签名更具现实意义。
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