Credstore

gem install credstore

# Generate Keys using Crypt class
require 'credstore'
options = {:length=>2048, :keys_dir=>"./keys", :public_key=>"id_rsa.pub", :private_key=>"id_rsa"}
Credstore::Crypt.generate_keys(options)

##
# working with strings
 
# private key is optional.. if there is no private key supplied, you can encrypt but cannot decrypt.
options = {:keys_dir=>"#{$LIB_BASE_DIR}/tmp/", :public_key=>"id_rsa.pub", :private_key=>"id_rsa"}
crypt = Credstore::Crypt.new(options)

# Encrypt a string
crypt.encrypt_string("Hello World")

# Decrypt a string
crypt.decrypt_string(crypt.encrypt_string("Hello World"))

##
# working with storage
options = {:keys_dir=>"./keys", :database=>"credstore.db", :public_key=>"id_rsa.pub", :private_key=>"id_rsa"}
storage = Credstore::Storage.new(options)

# store encrypted string for key
storage.write_key("key", "value")

# decrypt and read value for key
storage.read_key("key")

# read and write keys using the dot operator shortcut
storage.key="value"
storage.key

* length => length of the key (default is 2048)
* keys_dir => the directory that the keys will be written (default is ./)
* public_key => the name of the public key (default is id_rsa.pub)
* private_key => the name of the private key (default is id_rsa)

* keys_dir => the directory that the key(s) are located (default is ./)
* public_key => the public key (default is id_rsa.pub)
* private_key => the private key (default is nil.. if there is no private key you will be able to encrypt but not decrypt strings)

* keys_dir => the directory that the key(s) are located (default is ./)
* database => the path to the storage file for your credstore (default is ./credstore.db)
* public_key => the public key (default is id_rsa.pub)
* private_key => the private key (default is id_rsa)