A set of ruby bindings for the OS X keychain, written using ffi.
$ gem install ruby-keychain
or in your
gem 'ruby-keychain', :require => 'keychain'
The keychain is OS X's secure credential storage mechanism. This library allows access to internet passwords (typically specified as a combination of host, protocol, account (optionally port)) and generic passwords (identified by a service and account).
Working with keychains
Most operations will act on either the default keychain, or the default keychain search list. You can obtain specific keychains with
Keychain.default # the default keychain, usually /Users/<username>/Library/Keychains/<username>.keychain Keychain.open(path) # opens a keychain file Keychain.create(path, password) # creates a new keychain at the specified path, with the specified password # omit the password to make the keychain prompt the user
Searching for Keychain Items
The top level constant
Keychain as well as individual keychain objects have two methods
generic_passwords that return scope like objects. You can do
Keychain.internet_passwords.where(:server => 'example.com').all
to return Keychain::Item objects for that server
Keychain.internet_passwords.where(:server => 'example.com').first
to return the first Keychain::Item for that server or
Keychain.internet_passwords.where(:server => 'example.com').limit(4).all
to return up to 4 Keychain::Item for that server.
generic_passwords behaves similarly but searches the keychain for genereric passwords
You can restrict the search to a specific keychain with
some_keychain.internet_passwords.where(:server => 'example.com').all
Keychain::Item from the specified keychain.
or to an arbitrary list of keychains with
Finding a Keychain::Item won't prompt the user for a password if the keychain is unlocked. Calling the password accessor method of the item may prompt the user for their password depending on the keychain item access settings.
If you call
where multiple times, each successive invocation merges its conditions with the previous set of conditions
Creating keychain items
In the default keychain:
Keychain.internet_passwords.create(:server => 'example.com', :protocol => Keychain::Protocols::HTTP, :password => 'secret', :account => 'bob') # or Keychain.generic_passwords.create(:service => 'AWS', :password => 'secret', :account => 'bob')
In a specific keychain
by default keychain items are only readable by the application that created them, however when running a ruby script the application is ruby: by default other ruby scripts will be able to read the items (if the keychain is unlocked).
Using keychain items
Keychain::Item class has accessors for all its attributes, for the full list of attributes see
All strings returned are utf-8 encoded. Be careful not to set attribute values to strings with the ASCII_8BIT encoding as this will cause them to be treated as raw data rather than string. The exception to this is password data which the keychain api defines as being arbitrary binary data. When storing an actual password it is customary to use utf-8. The password data will always be returned as raw binary data
Failed operations will result in
Keychain::Error being raised. The original error code is available as the
code attribute of the exception. When attempting to insert a duplicate item,
Keychain::DuplicateItemError (a subclass of
Keychain::Error) is raised instead
Requires ruby 1.9 due to use of encoding related methods. Should work in MRI and jruby. Not compatible with rubinius due to rubinius' ffi implemenation not supporting certain features