Efficient Execution of Aggregation Queries over Encrypted Relational Databases
Efficient Execution of Aggregation Queries over Encrypted Relational Databases
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DOI：
10.1007/978-3-540-24571-1_10
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发表时间：
2004-03
期刊：
影响因子：
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通讯作者：
Hakan Hacıgümüş;B. Iyer;S. Mehrotra
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文献类型：
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作者：
Hakan Hacıgümüş;B. Iyer;S. Mehrotra
加密是确保存储数据隐私的常用方法。在许多实际情况下，在应用逻辑之前对数据进行解密会损害隐私。挑战是提出逻辑转换技术和结果映射方法，以便通过将转换后的逻辑应用于加密数据并映射产生的结果来获得将逻辑应用于明文数据的确切结果。在关系聚合查询的范围内，在存在逻辑谓词的情况下，我们展示了如何支持所需的转换和映射。
Encryption is a common method to assure privacy of stored data. In many practical situations, decrypting data before applying logic compromises privacy. The challenge is to come up with logic transformation techniques and result-mapping methods so that the exact result of applying logic to data-in-the-clear is obtained by applying the transformed logic to encrypted data and mapping the result produced. In the scope of relational aggregation queries and in the presence of logical predicates, we show how to support needed transformations and mappings.