ruby AES gem test

ruby-aes-gem-test.rb

require 'aes'

# Obvious part
plain = "Very important message"
full_valid_password = "password"
encrypted = AES.encrypt(plain, full_valid_password)
decrypted = AES.decrypt(encrypted, full_valid_password)
plain == decrypted #=> true, obviously

# Now the sad part
invalid_passwords = [
  "gassword", # Will decrypt anyway
  "gsssword", # Will decrypt anyway!
  "gsssssss", # Will decrypt anyway!!
  "ssssssss", # Will decrypt anyway!!!
  "totally wrong password", # Yes, will decrypt anyway!!!!
]

invalid_passwords.each do |wrong_password|
  full_invalid_password = wrong_password
  decrypted = AES.decrypt(encrypted, full_invalid_password) rescue(OpenSSL::Cipher::CipherError) || nil
  puts "VALID PASSWORD: #{full_valid_password}"
  puts "USED PASSWORD:  #{full_invalid_password}"
  puts "Did it work? #{plain == decrypted ? 'YES! Here is decrypted message: ' + decrypted : 'NO'}"
  puts
end

# Output:
# VALID PASSWORD: password
# USED PASSWORD:  gassword
# Did it work? YES! Here is decrypted message: Very important message
#
# VALID PASSWORD: password
# USED PASSWORD:  gsssword
# Did it work? YES! Here is decrypted message: Very important message
#
# VALID PASSWORD: password
# USED PASSWORD:  gsssssss
# Did it work? YES! Here is decrypted message: Very important message
#
# VALID PASSWORD: password
# USED PASSWORD:  ssssssss
# Did it work? YES! Here is decrypted message: Very important message
#
# VALID PASSWORD: password
# USED PASSWORD:  totally wrong password
# Did it work? YES! Here is decrypted message: Very important message