encryption.rb

# frozen_string_literal: true

require 'base64'
require 'openssl'
require 'securerandom'

def decrypt_data(encrypted_data, encryption_key)
  cipher = OpenSSL::Cipher.new('AES-256-CBC')
  cipher.decrypt
  cipher.key = encryption_key
  decrypted_data = cipher.update(encrypted_data) + cipher.final
  decrypted_data
end

def encrypt_data(data, encryption_key)
  cipher = OpenSSL::Cipher.new('AES-256-CBC')
  cipher.encrypt
  cipher.key = encryption_key
  encrypted_data = cipher.update(data) + cipher.final
  encrypted_data
end

data_to_encrypt = 'Sensitive Data'
puts "Date To Encrypt: #{data_to_encrypt}"

encryption_key = SecureRandom.alphanumeric(32) # Generate random encryption key
puts "Encryption Key: #{encryption_key}"

encrypted_data = encrypt_data(data_to_encrypt, encryption_key)
puts "Base64 Encoded Encrypted Data: #{Base64.encode64 encrypted_data}"

decrypted_data = decrypt_data(encrypted_data, encryption_key)
puts "Decrypted Data: #{decrypted_data}"

unless decrypted_data == data_to_encrypt
  raise 'oops something went wrong'
end