June 2018
Beginner to intermediate
210 pages
5h 12m
English
Content preview from Apache Hive Essentials - Second Edition
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The data-encryption function
Since Hive v1.3.o, aes_encrypt(input string/binary, key string/binary) and aes_decrypt(input binary, key string/binary) UDF have been provided to support data encryption and decryption using the AES (Advanced Encryption Standard: http://en.wikipedia.org/wiki/Advanced_Encryption_Standard) algorithm, which is a symmetric 128-bit, block-data encryption technique developed by Belgian cryptographers Joan Daemen and Vincent Rijmen.
The following is an example of using these functions:
-- 1st para. is value to encryped/decryped-- 2nd para. is 128 bit (16 Byte) keys> SELECT> name,> aes_encrypt(name,'1234567890123456') as encrypted,> aes_decrypt(> aes_encrypt(name,'1234567890123456'),> '1234567890123456') as decrypted ...
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