Include password base encryption, and random password

Gemfile

@@ -11,4 +11,5 @@ group :development, :test do
   gem 'guard-rubocop'
   gem 'listen', '3.0.8'
   gem 'terminal-notifier-guard'
+  gem 'openssl', '2.1.2'
 end

lib/crypto/PBE.rb

@@ -0,0 +1,28 @@
+
+require 'openssl'
+require 'securerandom'
+
+module Crypto
+  class PBE
+    alpha_num = ('0'..'9').to_a + ('A'..'Z').to_a + ('a'..'z').to_a
+    specials = ['-', '_', '+', '=', '#', '&', '*', '.']
+    CHARS = alpha_num + specials
+
+    def initialize(i = 1000)
+      @iterations = i
+      @digest = OpenSSL::Digest::SHA256.new
+    end
+
+    def random_password(length=32)
+      CHARS.sort_by { SecureRandom.random_number }.join[0...length]
+    end
+
+    def random_salt(size = 16)
+      SecureRandom.random_bytes(size)
+    end
+
+    def derived_key(password, salt, sizeKey = 24)
+      OpenSSL::PKCS5.pbkdf2_hmac(password, salt, @iterations, sizeKey, @digest)
+    end
+  end
+end