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| author | Mike Perry <mikeperry-git@fscked.org> | 2012-12-09 23:58:01 -0800 |
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| committer | Mike Perry <mikeperry-git@fscked.org> | 2012-12-09 23:58:01 -0800 |
| commit | 08da247042a106fbf8a437b7cd25460b0f2ee045 (patch) | |
| tree | 9649c2dc634f664b16c759a849d0c0dcd485dd6e /changes | |
| parent | aa16d59ee7abdf7c3309c267052ae265e141e1b3 (diff) | |
| download | tor-08da247042a106fbf8a437b7cd25460b0f2ee045.tar.gz tor-08da247042a106fbf8a437b7cd25460b0f2ee045.zip | |
Update changes file.
Diffstat (limited to 'changes')
| -rw-r--r-- | changes/bug7157 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/changes/bug7157 b/changes/bug7157 index fad3977bfa..4f0e3b3fcb 100644 --- a/changes/bug7157 +++ b/changes/bug7157 @@ -13,3 +13,14 @@ in combination with PathBiasExtremeRate. - Increase the default values for PathBiasScaleThreshold and PathBiasCircThreshold from 200 and 20 to 300 and 150, respectively. + - Add in circuit usage accounting to path bias. If we try to use a + built circuit but fail for any reason, it counts as path bias. + Certain classes of circuits where the adversary gets to pick your + destination node are exempt from this accounting. Usage accounting + can be specifically disabled via consensus parameter or torrc. + - Convert all internal path bias state to double-precision floating + point, to avoid roundoff error and other issues. + - Only record path bias information for circuits that have completed + *two* hops. Assuming end-to-end tagging is the attack vector, this + makes us more resilient to ambient circuit failure without any + detection capability loss. |