java - 将 java 中的加密代码转换为 Ruby

Question

我一直在尝试将 java 中的加密代码转换为 ruby​​，但我无法完全做到。我得到不同的值。

   passphrase = passphrase + STATIC_KEY;
   byte[] key = passphrase.getBytes("UTF-8");

   MessageDigest sha = MessageDigest.getInstance("SHA-1");
   key = sha.digest(key);
   key = Arrays.copyOf(key, 16);
   SecretKey secretKey = new SecretKeySpec(key, "AES");

   Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
   IvParameterSpec initialisationVector = new IvParameterSpec(
           new byte[16]);
   cipher.init(Cipher.ENCRYPT_MODE, secretKey, initialisationVector);

   byte[] encryptedData = cipher.doFinal(plainText.getBytes("UTF-8"));

   return SimpleCrypto.toHex(encryptedData);

任何人都可以让我知道，这是如何在 ruby​​ 中完成的。

  unencrypted = "passphrase"
  c = OpenSSL::Cipher.new("aes-128-cbc")
  c.encrypt
  c.key = Digest::SHA1.hexdigest('secret_key')[0...32]
  e = c.update(unencrypted)
  e << c.final
  return e

Answer 1

require 'openssl'

加密:

unencrypted = "I am a secret!"

初始化密码进行加密

cipher = OpenSSL::Cipher::AES.new(128, :CBC)
cipher.encrypt

使用 SHA1 创建 key

key = Digest::SHA1.hexdigest('secret_key')[0...32]
cipher.key = key

用输入创建初始化 vector

iv = Digest::SHA1.hexdigest('secret_iv')[0...32]
cipher.iv = iv

或创建一个随机初始化 vector

iv = cipher.random_iv

运行加密

encrypted = cipher.update(unencrypted) + cipher.final

解密:

初始化密码进行解密

decipher = OpenSSL::Cipher::AES.new(128, :CBC)
decipher.decrypt

加载 key 和初始化 vector

decipher.key = key
decipher.iv = iv

解密明文

plain = decipher.update(encrypted) + decipher.final

匹配吗？

puts unencrypted == plain #=> true

有关更多信息，请查看类的 Ruby 文档 - OpenSSL::Cipher