gacli

gacli was created for used with google-authenticator. Thankfully, TOTP is an open standard so gacli may have additional applications.

The ga command line utility provides convenient access to TOTP verification codes:

usage: ga [-h] [-d] [-f FILE]

Copy newline terminated TOTP verification code to Mac OS X clipboard.

optional arguments:
  -h, --help            show this help message and exit
  -d, --debug           print debug information
  -f FILE, --file FILE  Secret file

The debug option continually prints verification codes instead of copying a
single code to the clipboard.

Security

This application assumes you have secured your local computer disk or filesystem encryption. gacli is only safe with encryption:

• OS X: About FileVault 2
• EncryptedFilesystems - Community Ubuntu Documentation
• GnuPG
• GPGSuite (GnuPG for Mac OS X)

Install

Choose either of the following installation methods:

1. Simple Global
2. VirtualEnv and User Bin (recommended)

Simple Global

1. Please consider, again, using the VirtualEnv and User Bin method

2. Install the pip python module, if you have not already done so.

   • Installation -- pip documentation

3. Install the gacli python module:

   sudo pip install gacli
   

VirtualEnv and User Bin

This installation method has the following requirements:

• Your PATH includes ~/bin
• virtualenv Python module is installed
• virtualenvwrapper Python module is installed

Installation:

1. Create a new gacli virtualenv and install the gacli python module:

   mkvirtualenv -i gacli gacli
   

2. Symlink ga to home bin:

   ln -s $(which ga) ~/bin/
   

Configuration

1. See Security

2. Copy the secret key from the first line of your .google_authenticator and put in ~/.ga

3. Change permissions:

   chmod 0400 ~/.ga
   

GnuPG Protection

1. Encrypt secret file:

   cat ~/.ga | gpg -aes -r EMAIL > .ga.gpg
   

2. Delete unencrypted secret file:

   rm ~/.ga
   

3. Add an alias to your .bashrc:

   alias gad='gpg -qd ~/.ga.gpg | ga -f -'
   

Related

• mac-ssh-confirm: Protect against SSH Agent Hijacking on Mac OS X with the ability to confirm agent identities prior to each use

Requirements

• Linux or Mac OS X
  • Linux utilizes xclip or xsel.
  • Mac OS X utilizes pbcopy
• onetimepass

License

• LICENSE (Expat License/MIT License)