https://www.belenios.org/
Logo Belenios
* Belenios
* Administer an election
* Instructions for participants
* How it works
* Alternative voting
* Documentation
* Software
* Translation
* GDPR
* Contact us
* About us
* FAQ
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Some France/French
specific pages:
* Regles CNIL
* RGPD
* Organiser une election
* Instructions pour participants
* FAQ
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Logo CC BY SA
Belenios
Verifiable online voting system
Logo Belenios
To set up an election, you may simply use our voting platform.
Belenios aims at providing an easy to use voting system, guaranteeing
state-of-the-art security, namely vote privacy and verifiability. It
can be used in many types of elections (including referendums),
ranging from scientific councils to sport associations.
* Vote privacy: no one can learn the vote of a voter. Vote privacy
relies on the encryption of the votes.
* Verifiablity: Every voter can check that her vote has been
counted and only eligible voters may vote. Verifiablity relies on
the fact that the ballot box is public (voters can check that
their ballots have been received) and on the fact that the tally
is publicly verifiable (anyone can recount the votes). Moreover,
ballots are signed by the voter credential (only eligible voters
are able vote).
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Release of Belenios 2.5.1
2024-06-28
The main goal of this release is to correct an issue raised by
Olivier Pereira regarding the implementation of the Distributed Key
Generation (DKG) scheme in the threshold mode, that is when the
election key is distributed among n trustees, with a threshold of k
trustees to decrypt the election. This is now fixed by adding an
extra signature field. As a side effect, new elections should be
monitored with this additional signature check and our verification
tools have been updated accordingly. We are very grateful to Olivier
Pereira for reporting this issue.
Release of Belenios 2.5
2024-03-08
This release includes a restricted mode, that enforces all the
security options (e.g. external credential authority, external
decrytion authorities) needed to comply with the security
requirements of a security target, in view of a CSPN evaluation. This
restricted mode can be activated when installing an instance of
Belenios on a server.
Release of Belenios 2.4
2024-01-24
Voters no longer have to enter their credential, since it is now
included in the (private) link to the election that is sent to them.
Moreover, to comply with best-practice recommendations, the length of
the credentials has been increased.
The experience for the election administrator has been improved with
slight changes.
Release of Belenios 2.3
2023-10-01
The main visible change is that the format of private credentials has
changed, to include individual salts in credential derivation, for
more security. The old format is still supported for existing
elections, but new ones will use the new format.
Following requests from election administrators, private credentials
are now sent later one, once the election is ready. This allows
election administrators to entirely set up an election without
sending the credentials (yet).
Release of Belenios 2.2
2023-08-30
Belenios now features a new admin interface to set up elections, in
an experimental mode for the moment. This interface is more intuitive
and easy to use. Feel free to try this new interface and report your
feedback on belenios-discuss@inria.fr.
We have also added support for STV elections in preferential voting.
Other changes encompass e.g. various optimizations for handling
elections with around 30k voters.
Release of Belenios 2.1
2023-02-28
Belenios now supports and uses elliptic curves (Ed25519). Several
changes have also been made on the web platform:
* Decryption trustee can know check that they correctly save their
private key. There is no need to organize a mock election.
* Voters no longer need to enter their email address when casting
their vote.
* Voter list can be added in JSON format.
* It is possible to use basic < i > and < b > markup (GitHub issue
#66).
Release of Belenios 2.0
2022-12-06
A major evolution of Belenios has just been released. While the main
changes are not visible to end users, this new version introduces a
new election format where election events (e.g. ballots submission)
are chained to each other. This prepares a next version where the
server will be able to commit to the current content of an election.
The main visible change is the fact that the last confirmation step
of the voting phase has been removed. @election admin: make sure you
inform your voters that this is perfectly normal. You may also want
to update your documentation accordingly.
From a protocol point of view and for more robustness, the credential
authority now sends to the server, during the setup, the
correspondence between public credentials and voters.
The API support has also been improved in order to support a future
new version of the administration interface.
Release of Belenios 1.20
2022-10-20
The new release includes various improvements and fixes. The html tag
in election metadata is handled in more places. The monitoring
has been improved with random orders of HTTP requests. A bug has been
fixed in the computation of the Condorcet winners.
Release of Belenios 1.19
2022-05-10
In order to facilitate monitoring elections, pages served to
credential authority and trustees are now constant. The instructions
for the authorities have been updated and reinforced.
Belenios 1.19 also solves several issues raised on GitHub, in
particular regarding the mailto links. New languages have been added:
Lithuanian, Spanish (Latin America).
New Belenios server
2022-03-18
We have deployed a new Belenios public server, hosted at OVH, which
should (hopefully) offer better availability. New elections should
now preferably be created on this server. Accounts and elections on
the old server will not be automatically migrated to the new server.
You will have to create a new account.
The old server will remain online for a while but progressively,
account creation and election creation will be disabled.
Release of Belenios 1.18
2021-11-24
Belenios 1.18 now proposes the new voting booth by default. The new
booth is prettier and more responsive, but may lack some
translations; we invite administrators to use the booth preview
feature to see if the new booth fits their needs. The old booth can
still be selected on the question edition page.
The new release also includes several bug fixes (e.g. case
sensitivity issues in logins) and supports new operations on the REST
API (under development).
Release of Belenios 1.17
2021-09-07
One of the main changes in Belenios 1.17 is actually invisible to its
users: the cryptographic operations have been modified to avoid
(theoretical) weaknesses. In particular, the link between a ballot
and the corresponding election has been strengthened.
Moreover, Belenios now fully supports preferential elections tallied
with the Condorcet-Schulze method. A new, user-friendly, voting
interface has been developed to rank candidates. More information
here.
Finally, administrators accounts are now associated with a profile.
As a consequence, administrators will be asked an e-mail address on
first login if the system cannot determine one. This e-mail address
is used to initialize the contact for new elections. The default
public name of the administrator for new elections can also be
modified.
Release of Belenios 1.16
2021-07-19
Belenios now includes several new features.
* A new voting interface has been introduced both for standard
elections (where voters select candidates among a list) and
Majority Judgement (where voters rank candidates).
* The default authentication for voters is now with an email with a
short code during the voting process. The previous default (an
email with a complex password sent in advance) is still
available, but needs an explicit action to be used.
* Due to several requests,
are now interpreted in the
classical voting interface as line breaks in election names,
descriptions, questions and answers.
Donations are welcome
2021-06-25
We now welcome donations, in the first place to support our
infrastructure costs and also to partly cover our development costs.
You will find here more information on how to donate and how
donations are used.
Release of Belenios 1.15
2021-05-04
The new release of Belenios includes several features requested by
users.
* Belenios now officially support weighted votes. In other words,
voters may have several votes, according to the rules of the
election. You just have to indicate the number of votes of each
voter (her "weight") in the electoral list, in the form
mail,login,weight or mail,,weight.
* Credentials and passwords now have a different format to avoid
confusion.
* So many elections were deleted by mistake ... we removed the
misleading "archive" button in most cases.
Moreover, thanks to the translation effort, new languages have been
introduced, namely Greek (el), Dutch (nl), Slovak (sk), Finnish (fi),
Polish (pl).
Release of Belenios 1.13
2020-12-02
The new release of Belenios suports two main new features:
* The aministrator interface is available in several languages and
new languages have been introduced at least for the voter
interface: Norwegian Bokmal (nb), Spanish (es), Ukrainian (uk),
Czech (cs), Occitan (oc). Your help for translation is still
welcome since several languages are incomplete and we
continuously introduce new parts.
* If you wish to use alternative voting methods, our server now
supports Condorcet-Schulze, Majority Judgment and Single
Transferable Vote. More information can be found here. Note that
you can still apply any other method using your own algorithm
applied to the raw ballots produced from the tally.
Some more technical changes have also been made in the key
management. In particular, now the key of the server is always needed
to decrypt, even in the threshold mode.
Multi-languages hosted on Weblate
2020-10-29
Belenios is available in a few languages for voters and for the
administrator of the election. We need you help to pursue this
effort. We have hosted our translation files on weblate. You can
easily create an account and contribute. We have written a few
guidelines on how to best translate Belenios. Your help will be very
valuable to our project!
Release of Belenios 1.12
2020-08-31
The main change is a bug fix: some users reported that they were
blocked when voting. This was due to a bad interaction with some
browser extensions. This is now corrected.
Security analysis of Belenios (in French)
2020-06-02
We provide a security analysis of Belenios, mainly w.r.t. the
criteria defined by the CNIL (Commission Nationale de l'Informatique
et des Libertes). Since these criteria are somewhat specific to
French regulations, the document is written in French. It can be
found here.
Release of Belenios 1.11
2020-05-26
One important feature of the new release is that the main page of the
election now includes verification material for election authorities
and voters. In particular, the number and names of decryption
trustees are displayed as well as a hash of the voter list and all
public and verification keys. The instructions on what to check and
how are spelled out here (or here for the French version) for each
party (trustees, electoral commission, credential authority,
administrator, voters).
Moreover, in case no credential authority is used in an election
(which reduces the security level of the election), then the
administrator can now save the list of private credentials before
starting the election. This allows the administrator to resend a
credential to a voter that has lost it.
Release of Belenios 1.10
2019-12-09
We have added mixnets to Belenios. What does this mean? You can now
organize any type of elections, e.g. where voters rank candidates by
order of preference or provide a grade. In the mixnet mode (still
experimental), the raw ballots are provided at the end of the
election, in a random order, to protect privacy. You can then apply
your favorite counting methods (e.g. STV, Condorcet, or majority
judgement) to compute the winner. More information on how to use
Belenios for alternative voting can be found here. Note that Belenos
still supports the previous homomorphic mode, which is more
convenient (and efficient) in case of elections where voters simply
select some number of candidates among a list.
The new version also includes minor changes in the administration
interface, to help setting up an election with trustees.
Release of Belenios 1.9
2019-05-28
Belenios 1.9 now includes the possibility to temporarily hide the
result from the public (e.g. to delay the announcement of the
winner). We have also fixed some bugs.
Release of Belenios 1.8
2019-02-04
The new version 1.8 of Belenios includes two main changes.
* To use our platform as an election administrator, you may now
create an account online (select public mode).
* The threshold encryption mode is now fully integrated to our
platform. For example, the decryption key may be split among 3
authorities such that 2 suffice for decryption, as recommanded by
the CNIL. Any other combination can be chosen of course.
Release of Belenios 1.7
2018-11-26
The main visible change of Belenios 1.7 is that elections can now be
archived and/or deleted, according to our policy regarding data
management (click here for the French version). In particular, all
elections will be deleted after one year. An archive of the election
may be previously saved by the administrator of the election.
Release of Belenios 1.6
2018-06-13
This new version of Belenios includes changes mandated by the new
GDPR regulation.
The explanations given on the web interface for setting an election
have been improved thanks to users comments.
Release of Belenios 1.5
2017-12-14
Belenios 1.5 has been released and integrated to our voting platform.
It is now possible to set the server as one of the trustees in charge
of the decryption keys. Note that supported languages are now
English, French, German, Italian, and Romanian.
Since its launch, Belenios has been used to organize about 200
elections and more than 6000 ballots have been cast.
Fully open voting platform
2016-09-01
Our on-line voting platform can now be easily used to set up an
election by login using your Google account (or the INRIA CAS
server).
Multi language available
2016-09-01
Voters can now vote in their favorite language (among English,
French, and German). More languages to come soon! If you need another
language for an important election, you may also contact us.
Code release
2016-07-25
The latest version of our Belenios software is available. With this
sofware, you may run an election on your own server. Belenios is
distributed under the terms of the GNU Affero General Public License
version 3.
Online platform
2015-09-15
The first release of our on-line platform is up. No need to install
software anymore. You can set up an election simply through our
interface. Note however that this interface is still under
development. Therefore the access is granted through the INRIA CAS
server or on request. Stay tuned for the release of our fully open
voting platform! To learn about the new developments of Belenios, you
may subscribe to our mailing-list.