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[WIP] Avatar decryption with aes_gcm_siv #22
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Not correct by now. The tests in server_test.go still fail.
Warning: secure-io/siv-go is an "experimental proof-of-concept implementation". I'm not happy with this dependency.
According to https://forum.golangbridge.org/t/is-there-a-reliable-implementation-for-aes-gcm-siv/21088/2 this implementation is reliable.
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Signal uses aes_gcm_siv for avatar encryption.
This will be the corresponding go implementation.
It is now using https://github.com/agl/gcmsiv, which is also used by https://boringssl.googlesource.com/boringssl/ .
This sounds like a reliable implementation. :)
The tests pass.
Now, I need to verify if its able to decrypt real avatars .
It seems, the library can't be compiled for armhf. :(