中文摘要：

针对电子商务交易流程,分析了C2C模式下电子商务＂三流＂中的安全需求和安全威胁,给出电子商务的数字取证框架,从数字证据的发现、固定、提取、分析、表达等方面对电子商务中的数字取证技术进行了分析,介绍了数字取证过程中所采用的各项关键技术。

英文摘要：

For E-commerce transaction,the paper analyzed the security requirements and security threats of the ＂three flows＂ based on the C2C E-commerce model.After given the framework of E-commerce＇s digital forensics,the paper researched the digital evidence with the investigation technologies such as discovery,fixing,collection,analysis,expression,and so on.Lastly,the key technologies in E-commerce＇s digital forensics were introduced.