ORC Column Encryption

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To provide better security, ORC files are adding column encryption. Column encryption provides the ability to grant access to different columns within the same file. All of the encryption is handled transparently to the user.

Daten & Analysen

© Hortonworks Inc. 2018
ORC Column Encryption
May 2018
Page 1
Owen O’Malley
owen@hortonworks.com
@owen_omalley

© Hortonworks Inc. 2018
Controlling Sensitive Data
Page 2

© Hortonworks Inc. 2018
What is the Problem?
Page 3

© Hortonworks Inc. 2018
Partial Solution – HDFS Encryption
Page 4

© Hortonworks Inc. 2018
KeyProvider API
Page 5

© Hortonworks Inc. 2018
HDFS Encryption Limitations
Page 6

© Hortonworks Inc. 2018
Partial Solution – Hive Server 2
Page 7

© Hortonworks Inc. 2018
Hive Architecture with Hive Server 2
Page 8

© Hortonworks Inc. 2018
Hive Server 2 Limitations
Page 9

© Hortonworks Inc. 2018
Partial Solution – Encryption UDF
Page 10

© Hortonworks Inc. 2018
Partial Solution – Separate tables
Page 11

© Hortonworks Inc. 2018
Solution – Columnar Encryption
Page 12

© Hortonworks Inc. 2018
Key Management
Page 13

© Hortonworks Inc. 2018
Attribute-Based Access Control (ABAC)
Page 14

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Key Disposal
Page 15

© Hortonworks Inc. 2018
Encrypting Columns
Page 16

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Data Masking
Page 17

© Hortonworks Inc. 2018
Data Masking
Page 18

© Hortonworks Inc. 2018
ORC File Format
Page 19
File Footer
Postscript
Index Data
Row Data
Stripe Footer
~200MBStripe
Index Data
Row Data
Stripe Footer
~200MBStripe
Index Data
Row Data
Stripe Footer
~200MBStripe
Column 1
Column 2
Column 7
Column 8
Column 3
Column 6
Column 4
Column 5
Column 1
Column 2
Column 7
Column 8
Column 3
Column 6
Column 4
Column 5
Stream 2.1
Stream 2.2
Stream 2.3
Stream 2.4

© Hortonworks Inc. 2018
ORC Column Encryption
Page 20

© Hortonworks Inc. 2018
ORC Write Pipeline
Page 21

© Hortonworks Inc. 2018
Encryption flow
Page 22

© Hortonworks Inc. 2018
Conclusions
Page 24

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Challenges
Page 25

© Hortonworks Inc. 2018
Limitations
Page 26

© Hortonworks Inc. 2018
Questions?
Page 27

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