obfs4 icon
obfs4 icon

obfs4

This is a look-like nothing obfuscation protocol that incorporates ideas and concepts from Philipp Winter's ScrambleSuit protocol. The obfs naming was chosen primarily because it was shorter, in terms of protocol ancestery obfs4 is much closer to ScrambleSuit than...

Cost / License

Platforms

  • Go (Programming Language)
  • Mac
  • Linux
  • Windows
  • BSD
obfs4 alternatives  
1like
3alternatives
0articles

Features

obfs4 News & Activities

Highlights All activities

Recent activities

obfs4 information

GitHub repository

  •  1,245 Stars
  •  194 Forks
  •  2 Open Issues
  •   Updated  

Popular alternatives

View all
obfs4 was added to AlternativeTo by Paul on and this page was last updated .
No comments or reviews, maybe you want to be first?

Official Links

AppStores & Other Links

What is obfs4?

This is a look-like nothing obfuscation protocol that incorporates ideas and concepts from Philipp Winter's ScrambleSuit protocol. The obfs naming was chosen primarily because it was shorter, in terms of protocol ancestery obfs4 is much closer to ScrambleSuit than obfs2/obfs3.

The notable differences between ScrambleSuit and obfs4:

  • The handshake always does a full key exchange (no such thing as a Session Ticket Handshake).
  • The handshake uses the Tor Project's ntor handshake with public keys obfuscated via the Elligator 2 mapping.
  • The link layer encryption uses NaCl secret boxes (Poly1305/XSalsa20).

As an added bonus, obfs4proxy also supports acting as an obfs2/3 client and bridge to ease the transition to the new protocol.