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MuacryptCC provides consistency checks for keys observed in Autocrypt gossip to support privacy-preserving decentralized key distribution. The underlying concept is descript in Key consistency with ClaimChains.
It’s build on top of ClaimChain. These hash chains store claims about public keys that people use and have observed.
It uses email headers to transfer references to the chains of the sender and recipients. The chains themselves are uploaded to and retrieved from an online storage at message delivery and retrieval times.
Use pip to add the muacryptcc plugin:
$ pip install --user muacryptcc
MuacryptCC will install muacrypt and extend the installation. You can confirm it was properly installed by running:
$ muacrypt cc-status
Please follow the muacrypt instructions for testing first.
Once muacrypts tests are passing Clone the muacryptcc repository into a separate folder:
$ git clone https://github.com/nextleap-project/muacryptcc
Afterwards you can run all tests:
installation for development
If you plan to work/modify the sources you will first need a git clone:
$ git clone email@example.com:nextleap-project/muacryptcc.git $ cd muacryptcc
We strongly recommend to create and activate a python virtualenv and then once use pip without sudo in edit mode:
$ virtualenv venv $ source venv/bin/activate $ pip install -e .
If you want to make changes to both muacrypt and muacryptcc we recommend setting up a virtualenv with both directories installed in edit mode:
$ virtualenv venv $ source venv/bin/activate $ pip install -e ../muacrypt $ pip install -e .
Changes you subsequently make to the sources will be available without further installing the packages again.
We envision the following next steps to make MuacryptCC check the consistency guarantees between peer chains:
online block store to allow remote access to peers chains.
subcommand to list conflicts in chains retrieved so far.
subcommand to display ordered list of recommended key verifications.
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