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Ssh-agent clone for cygwin that proxies to pageant
C Shell Perl
branch: master

Merge pull request #17 from ggiesen/master

Patch charade.c to fix compile problems on Cygwin64
latest commit a9afa85aac
@wesleyd authored

README.md

Intro

Charade is an ssh-agent in cygwin that proxies requests to pageant.

If you don't use cygwin or pageant, you don't need charade. If you're happy with plink, you don't need charade. (I love putty, but I prefer openssh to plink.)

Background: I tolerate Windows XP. I actually quite like it. But it needs putty, and it needs cygwin to be usable. I used to maintain two separate sets of ssh keys: one for putty, which I kept in pageant, and another for cygwin's openssh, which I kept in ssh-agent/keychain.

Eventually I got fed up maintaining two key pairs and charade was born.

Charade just pretends to be ssh-agent on one side and putty on the other. It's a shim between openssh and pageant.

It aspires to be a drop-in replacement for ssh-agent, and that's how I use it atm. It works for me. It probably won't work for you.

I stole large swaths of code from (i) Simon Tatham's putty (mostly putty-src/windows/winpgntc.c) and (ii) openssh's (and Tatu Ylonen's and Marcus Friedl's) ssh-agent.c.

Also check out cuviper's ssh-pageant, which does something similar.

Russell Davis has a clever way of setting environment variables at boot so that processes launched outside your shells can also use your ssh keys.

Required cygwin packages

  • gcc-g++
  • make
  • keychain
  • openssh
  • psmisc

Installation instructions

  1. Clone the repository

    git clone git://github.com/wesleyd/charade.git
    
  2. Build and install charade

     make && make install
    
  3. Stop running charade or ssh-agent processes

     killall charade   # Only if upgrading
    
     killall ssh-agent   # Only if not upgrading
    
  4. Remove existing keychain files to clear references to ssh-agent

     rm -rf ~/.keychain
    
  5. Add these two lines to ~/.bash_profile:

     keychain -q -Q
    
     . ~/.keychain/`hostname`-sh
    
  6. Logout, launch a new shell or putty and try it out

    ssh git@github.com
    

If you have a key in pageant, you should be able to go where it points.

It just forwards ssh messages, so surprising (to me!) things Just Work, like adding keys with ssh-add instead of through the pageant gui.

Wesley Darlington, December 2009.

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