Make RPC password resistant to timing attacks #2886

pull gavinandresen wants to merge 1 commits into bitcoin:master from gavinandresen:rpctiming changing 3 files +27 −1

gavinandresen commented at 11:06 AM on August 8, 2013: contributor

Fixes issue#2838; this is a tweaked version of pull#2845 that should not leak the length of the password and is more generic, in case we run into other situations where we need timing-attack-resistant comparisons.

Make RPC password resistant to timing attacks

Fixes issue#2838; this is a tweaked version of pull#2845 that
should not leak the length of the password and is more generic,
in case we run into other situations where we need
timing-attack-resistant comparisons.

42656ea2e5

BitcoinPullTester commented at 11:48 AM on August 8, 2013: none

Automatic sanity-testing: PASSED, see http://jenkins.bluematt.me/pull-tester/42656ea2e552b027e174fdceab7348ffcb8245c4 for binaries and test log. This test script verifies pulls every time they are updated. It, however, dies sometimes and fails to test properly. If you are waiting on a test, please check timestamps to verify that the test.log is moving at http://jenkins.bluematt.me/pull-tester/current/ Contact BlueMatt on freenode if something looks broken.
laanwj commented at 8:01 AM on August 10, 2013: member

ACK
sipa commented at 9:48 PM on August 15, 2013: member

ACK
gmaxwell commented at 9:54 PM on August 15, 2013: contributor

ACK. This does leak some timing data if bsize==0 or not, but I think this is inconsequential, I'm only mentioning it in case others didn't realize it and might care.
gavinandresen referenced this in commit a0bb001431 on Aug 16, 2013
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