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Redirect attack on Shadowsocks stream ciphers
Hi @edwardz246003
Thanks a lot for the interesting finding!
To clarify, go-shadowsocks2 (not to be confused with the deprecated shadowsocks-go) supports AEAD ciphers from the very beginning.
flake8 testing of https://github.com/edwardz246003/shadowsocks on Python 3.8.1
$ flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
./attack2_with_https_pocket.py:40:34: E999 TabError: inconsistent use of tabs and spaces in indentation x=xor(prefix_https_recv,targetIP) ^
1 E999 TabError: inconsistent use of tabs and spaces in indentation
1
Hello there
As we all know, ShadowsocksR is a variant of Shadowsocks. It does not support AEAD encryption.
But it has more "protocol" function than Shadowsocks ( in the ShadowsocksR protocol document has detailed description of each protocol ).
In the document, many protocols indicate "prevent various detection and replay-attack", but did not specify whether it can prevent Redirect Attack.
So I would like to ask whether ShadowsocksR has the ability to prevent Redirect Attack. If so, what protocol should be used?
Thank you!
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