中文摘要：

原有的云存储模式所存在的问题已经困扰行业多年，在静态数据加密存储的过程中，只有实现真正意义上的数据私有化才能保证数据的安全，保障数据拥有者的利益。针对云存储应用中用户数据安全存储需求的提高，以AmazonS3（simplestorageservice）为例分析当前云存储模式下静态数据安全存在的普遍问题，设计了一套新的云端静态数据加密存储方案——分离密钥存储服务（separatedkeyS3）解决方案，设计了新的密钥管理方法，从技术上实现了云端静态数据的安全，最后对该方案的数据安全性进行了分析。

英文摘要：

The problems existing in the original cloud storage model has plagued the industry for many years, to realize the true sense of the data privatization in the static data encrypted storage process is able to ensure data security and protect data owners＇ interests. Cloud storage applications for the current secure storage of user data is able to improve data security. Taking Amazon S3 as an example, the general problem in static data security was analyzed. A new set of cloud static data encryption and storage solution, separated key S3, was designed, and a new key management method was also designed. The new technology absolutely accomplished the security of static data in the cloud. Additionally the data security analysis and prospect on next research was given.