require 'openssl'
require 'Base64'
class Rudolph
class Crypt
def initialize data_path
@data_path = data_path
@private = get_key 'id_rsa'
@public = get_key 'id_rsa.pub'
end
def encrypt_string message
Base64::encode64(@public.public_encrypt(message)).rstrip
end
def decrypt_string message
@private.private_decrypt Base64::decode64(message)
end
def self.generate_keys data_path
rsa_path = File.join(data_path, 'rsa')
privkey = File.join(rsa_path, 'id_rsa')
pubkey = File.join(rsa_path, 'id_rsa.pub')
unless File.exists?(privkey) || File.exists?(pubkey)
keypair = OpenSSL::PKey::RSA.generate(1024)
Dir.mkdir(rsa_path) unless File.exist?(rsa_path)
File.open(privkey, 'w') { |f| f.write keypair.to_pem } unless File.exists? privkey
File.open(pubkey, 'w') { |f| f.write keypair.public_key.to_pem } unless File.exists? pubkey
end
end
private
def get_key filename
OpenSSL::PKey::RSA.new File.read(File.join(@data_path, 'rsa', filename))
end
end
end
