gistfile1.rb

#使用 AES 加密的示例如下： 
#Ruby代码 

require "openssl"  
cipher = OpenSSL::Cipher::Cipher  
  
# AES, block size = 256，使用 CBC  
aes = cipher.new('aes-256-cbc').encrypt  
# 随机生成密钥  
key = aes.random_key  
# 随机生成初始向量  
iv = aes.random_iv  
  
crypted = aes.update 'hello '  
crypted.<< aes.update 'world'  
crypted.<< aes.final  
  
aes = cipher.new('aes-256-cbc').decrypt  
aes.key = key  
aes.iv = iv  
  
result = aes.update crypted  
result.<< aes.final  
  
puts result #=> "hello world"