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From "Xianda Ke (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-6128: Spill-to-disk Encryption(AES-CFB + SHA256) is slow
Date Wed, 15 Nov 2017 02:02:42 GMT
Xianda Ke has uploaded this change for review. ( http://gerrit.cloudera.org:8080/8510


Change subject: IMPALA-6128: Spill-to-disk Encryption(AES-CFB + SHA256) is slow
......................................................................

IMPALA-6128: Spill-to-disk Encryption(AES-CFB + SHA256) is slow

CFB mode is stream cipher and is secure when use different nonce/IV
for every message. However it would be a performance bottleneck.
CTR mode is also stream cipher and is secure, 4~6x faster
than CFB mode in OpenSSL.

AES-CTR+SHA256 is about 40~70% faster than AES-CFB+SHA256

Testing:
run runtime tmp-file-mgr-test

Change-Id: Ib97939f2334838263364b53ef3413871638bf53e
---
M be/src/runtime/tmp-file-mgr.cc
M be/src/util/openssl-util.cc
M be/src/util/openssl-util.h
3 files changed, 12 insertions(+), 10 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/10/8510/2
-- 
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ib97939f2334838263364b53ef3413871638bf53e
Gerrit-Change-Number: 8510
Gerrit-PatchSet: 2
Gerrit-Owner: Xianda Ke <kexianda@gmail.com>

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