Ruby AES CBC解密的Java等价物

下面的ruby代码可以工作

require 'openssl'
require "base64"

cipher = OpenSSL::Cipher::AES256.new(:CBC)   
cipher.decrypt   
cipher.key = Base64.strict_decode64("LLkRRMSAlD16lrfbRLdIELdj0U1+Uiap0ihQrRz7HSQ=")    
cipher.iv = Base64.strict_decode64("A23OFOSvsC4UyejA227d8g==")
crypt = cipher.update(Base64.strict_decode64("D/e0UjAwBF+d8aVqZ0FpXA=="))    
crypt << cipher.final
puts crypt # prints Test123

---

为简单起见，密钥和iv是硬编码的

您告诉它要加密，而不是解密。正确的代码行是

cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(key, "AES"), new IvParameterSpec(iv));

此外，如果要为此使用BouncyCastle，请使用

Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding", BouncyCastleProvider.PROVIDER_NAME);

或将BouncyCastle设置为默认值：

Security.insertProviderAt(new BouncyCastleProvider(), 1);

---

cipher.decrypt

不会转换为

cipher.ENCRYPT\u模式

@zapl。谢谢我真傻。“AES/CBC/PKCS5Padding”的前导空格被截断

Security.insertProviderAt(new BouncyCastleProvider(), 1);