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Micah Elizabeth Scott 6a0809c4e3 hs_pow: stop having a "minimum effort", and let PoW effort start low
I don't think the concept of "minimum effort" is really useful to us,
so this patch removes it entirely and consequentially changes the way
that "total" effort is calculated so that we don't rely on any minimum
and we instead ramp up effort no faster than necessary.

If at least some portion of the attack is conducted by clients that
avoid PoW or provide incorrect solutions, those (potentially very
cheap) attacks will end up keeping the pqueue full. Prior to this patch,
that would cause suggested efforts to be unnecessarily high, because
rounding these very cheap requests up to even a minimum of 1 will
overestimate how much actual attack effort is being spent.

The result is that this patch is a simplification and it also allows a
slower start, where PoW effort jumps up either by a single unit or by an
amount calculated from actual effort in the queue.

Signed-off-by: Micah Elizabeth Scott <beth@torproject.org>
2023-05-10 07:38:29 -07:00
.gitlab/issue_templates Remove Proposal.md. 2021-02-12 20:39:48 +00:00
changes changes: Ticket 40634 (hs_pow) 2023-05-10 07:38:29 -07:00
contrib version: Bump version to 0.4.7.8-dev 2022-06-17 10:45:24 -04:00
doc hs_pow: Rate limited dequeue 2023-05-10 07:38:28 -07:00
m4 added check for compiler support of Wextra-semi 2022-11-01 15:32:43 -06:00
scripts gitlab-ci: Try enabling GPL mode so we test hs_pow 2023-05-10 07:38:29 -07:00
src hs_pow: stop having a "minimum effort", and let PoW effort start low 2023-05-10 07:38:29 -07:00
.appveyor.yml CI: Remove VS2015 AppVeyor build 2020-08-12 14:09:32 +03:00
.clang-format Add a dire warning about not reformatting the whole codebase yet. 2020-02-12 18:52:35 -05:00
.editorconfig Add .editorconfig to follow coding standards style 2018-06-17 19:24:40 -04:00
.gitignore ext: build equix and hashx using automake 2023-05-10 07:38:28 -07:00
.gitlab-ci.yml gitlab-ci: Try enabling GPL mode so we test hs_pow 2023-05-10 07:38:29 -07:00
.travis.yml rust: Remove Rust support from tree 2021-10-06 15:12:04 -04:00
acinclude.m4 m4: Change LIBS order of TOR_SEARCH_LIBRARY() 2021-01-13 09:52:10 -05:00
autogen.sh Cleanup shellcheck warnings in autogen.sh 2019-01-18 13:49:30 +02:00
ChangeLog changelog: Update with latest releases 2023-01-12 12:11:16 -05:00
CODE_OF_CONDUCT Add CODE_OF_CONDUCT file 2018-07-05 11:22:33 +03:00
configure.ac ext: build equix and hashx using automake 2023-05-10 07:38:28 -07:00
CONTRIBUTING Add CODE_OF_CONDUCT file 2018-07-05 11:22:33 +03:00
Doxyfile.in Remove last artifacts of Rust related code 2021-10-06 15:12:04 -04:00
INSTALL Remove old instructions from INSTALL 2018-07-03 16:34:52 +03:00
LICENSE Merge branch 'maint-0.3.5' into maint-0.4.4 2021-03-12 11:36:34 -05:00
Makefile.am ext: build equix and hashx using automake 2023-05-10 07:38:28 -07:00
README.md readme: Fix sentence in Releases section 2022-03-09 14:13:34 -05:00
ReleaseNotes changelog: Update with latest releases 2023-01-12 12:11:16 -05:00
warning_flags.in Try @warning_flags to avoid bloating verbose make logs 2018-12-21 10:00:23 -05:00

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