cashes crystal play

require "openssl"
NAME = "Boy"

cipher = OpenSSL::Cipher.new("AES-256-CBC")
cipher.encrypt
key = cipher.random_key
iv = cipher.random_iv

# Username
s2 = IO::Memory.new
s2.write(cipher.update(NAME) )
s2.write(cipher.final)
encrypted_name = s2.to_s
puts encrypted_name

decipher = OpenSSL::Cipher.new("AES-256-CBC")
decipher.decrypt
decipher.key = key
decipher.iv = iv

# Username
s1 = IO::Memory.new
s1.write(decipher.update(encrypted_name))
s1.write(decipher.final)
plain_name = s1.to_s

puts plain_name