Age | Commit message (Collapse) | Author |
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This is a meek client only implementation, with the following
differences with dcf's `meek-client`:
- It is named `meek_lite` to differentiate it from the real thing.
- It does not support using an external helper to normalize TLS
signatures, so adversaries can look for someone using the Go
TLS library to do HTTP.
- It does the right thing with TOR_PT_PROXY, even when a helper is
not present.
Most of the credit goes to dcf, who's code I librerally cribbed and
stole. It is intended primarily as a "better than nothina" option
for enviornments that do not or can not presently use an external
Firefox helper.
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This allows obfs4proxy to be used as a ScrambleSuit client that is wire
compatible with the obfs4proxy implementation, including session ticket
support, and length obfuscation.
The current implementation has the following limitations:
* IAT obfuscation is not supported (and is disabled in all other
ScrambleSuit implementations by default).
* The length distribution and probabilites are different from those
generated by obfsproxy and obfsclient due to a different DRBG.
* Server support is missing and is unlikely to be implemented.
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* Changed obfs4proxy to be more like obfsproxy in terms of design,
including being an easy framework for developing new TCP/IP style
pluggable transports.
* Added support for also acting as an obfs2/obfs3 client or bridge
as a transition measure (and because the code itself is trivial).
* Massively cleaned up the obfs4 and related code to be easier to
read, and more idiomatic Go-like in style.
* To ease deployment, obfs4proxy will now autogenerate the node-id,
curve25519 keypair, and drbg seed if none are specified, and save
them to a JSON file in the pt_state directory (Fixes Tor bug #12605).
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