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This move allows server to use it on #8868 as described in #8890
-- Relates: #8890
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Extracted preamble code for making space to #8890 changes.
-- Related: #8890
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This needs OpenSSL >= 1.1, otherwise it will keep using the scrypt
dependency.
We should think about deprecating scrypt as a dependency when we can be
sure that the adoption of libssl 1.1 is wide enough. I think that at
some point (soledad 0.11 or so) we can drop the scrypt dependency, which
was being somehow problematic at times (the _scrypt.so was not appearing
when installing with pip, needed workarounds). From that moment on, we
can raise an error if an old libssl is found and no scrypt can be
imported - leaving that to the user/packager.
In debian stretch and afterwards, you can get that version by installing
libssl-dev
- Related: #8472
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That's necessary for blobs-io. Current code includes backwards
compatibility branching and tests, which shall be removed on next
releases.
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Current implementation can allow tampering and the CTR->GCM exchange can
help to avoid it.
This commits also alters a behaviour where we moved ahead after failing
to decrypt a recovery document. IMHO we can't move ahead as this is a
fatal error.
Signed-off-by: Victor Shyba <victor1984@riseup.net>
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Integrated the secrets's JSON key that specifies ciphers into _crypto
and added optional GCM. Also added a test to check if both cipher types
can be imported.
Resolves: #8680
Signed-off-by: Victor Shyba <victor1984@riseup.net>
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Resolves: #8668 - client: substitute usage of CTR mode + HMAC by GCM
cipher mode
Signed-off-by: Victor Shyba <victor1984@riseup.net>
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Our magic value wasn't being used and were represented as a string.
Refactored it to a constant, increased it's size to 2 bytes and optimzed
is_symmetrically_encrypted to look for the magic and symmetrically
encrypted flag under base64 encoding. Most file types will use this
feature to help identifying themselves, so it got refactored to serve
the purpose it was created.
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AESWriter and HMACWriter are just applying hmac or aes into a flow of
data. Abstracted the application of those operations into a super class
and highlighted just the difference on each implementation.
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After adding the streaming decrypt, some classes were doing almost the
same thing. Unified them.
Also fixed some module level variables to upper case and some class name
to camel case.
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We are already doing this on encryption, now we can stream also from
decryption. This unblocks the reactor and will be valuable for blobs-io.
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We now encode preamble and ciphertext+hmac in two distinct payloads
separated by a space. This allows metadata to be extracted and used
before decoding the whole document.
It also introduces a single packer for packing and unpacking of data
instead of reads and writes. Downside: doc_id and rev are limited to 255
chars now.
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IV was being set during tests and this required some defensive coding to
avoid IV being set in production. This commits makes the test use the
generated IV and "hides" it using a read-only property to let it clear
this should never happen.
Also refactored out some parameters that are generated automatically to
reduce some lines of code and enhance readability.
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Fixes setup.cfg, adding current exclude rules, simplified tox.ini to use
setup.cfg and fixed all.
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- move tests to root directory
- split tests in different subdirectories
- setup a small package with common test dependencies in /testing/test_soledad
- add tox.ini that will:
- install the test_soledad package and other test dependencies
- install soledad common, client, server from the repository
- run tests contianed in /testing/tests directory using pytest
This commit also removes all oauth code from tests, as we have removed the
u1db dependency (by importing it into the repo and naming it l2db) and don't
neet oauth at all right now.
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