CHAPTER 8

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Encryption in Hadoop

Recently, I was talking with a friend about possibly using Hadoop to speed up reporting on his company’s “massive” data warehouse of 4TB. (He heads the IT department of one of the biggest real estate companies in the Chicago area.) Although he grudgingly agreed to a possible performance benefit, he asked very confidently, “But what about encrypting our HR [human resources] data? For our MS SQL Server–based HR data, we use symmetric key encryption and certificates supplemented by C# code. How can you implement that with Hadoop?”

As Hadoop is increasingly used within corporate environments, a lot more people are going ...

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