如何从C#中解密这个RijandelManaged in ruby​​?

时间:2012-09-26 21:24:01

标签: c# ruby rijndaelmanaged

 static byte[] keyBytes = new byte[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
                                              1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
                                              1, 1, 1, 1, 1, 1, 1, 1
                                            };
    static byte[] iv = new byte[] { 1, 1, 1, 1 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };

    static SymmetricAlgorithm getKey()
    {
        RijndaelManaged key = new RijndaelManaged();
        key.Key = keyBytes;
        key.IV = iv;
        return key;
    }

    static string Encrypt(string PlainText)
    {
        SymmetricAlgorithm key = getKey();
        MemoryStream ms = new MemoryStream();
        CryptoStream encStream = new CryptoStream(ms, key.CreateEncryptor(), CryptoStreamMode.Write);
        StreamWriter sw = new StreamWriter(encStream);
        sw.WriteLine(PlainText);
        sw.Close();
        encStream.Close();
        byte[] buffer = ms.ToArray();
        ms.Close();
        return Convert.ToBase64String(buffer);
    }

    static string Decrypt(string encrypted)
    {
        SymmetricAlgorithm key = getKey();
        byte[] CypherText = Convert.FromBase64String(encrypted);
        MemoryStream ms = new MemoryStream(CypherText);
        CryptoStream encStream = new CryptoStream(ms, key.CreateDecryptor(), CryptoStreamMode.Read);
        StreamReader sr = new StreamReader(encStream);
        string val = sr.ReadLine();
        sr.Close();
        encStream.Close();
        ms.Close();
        return val;
    }

显然,密钥和iv已经改为所有""保护有罪。

我在这里尝试了其他几篇SO文章,但无济于事。

我以为我会继续展示我试图使用的红宝石openssl代码:

def Crypt.decrypt(encrypted_data, key, iv, cipher_type)
    aes = OpenSSL::Cipher::Cipher.new(cipher_type)
    aes.decrypt
    #aes.padding = 1
    aes.key = key
    aes.iv = iv if iv != nil
    aes.update(encrypted_data) + aes.final  
  end

1 个答案:

答案 0 :(得分:2)

Ruby的OpenSSL模块似乎默认使用PKCS5类型填充(http://www.ruby-doc.org/stdlib-1.9.3/libdoc/openssl/rdoc/OpenSSL/Cipher.html)。但Microsoft Rj-Managed使用PKCS7作为默认值。 Ruby模块支持PKCS7,因此您可能只想坚持使用(http://www.ruby-doc.org/stdlib-1.9.3/libdoc/openssl/rdoc/OpenSSL/PKCS7.html)。就个人而言,由于加密是如此挑剔,我喜欢手动设置每个选项而不是默认设置,即使我使用默认设置只是为了确保两端都相同。我之前使用C#/ PHP完成了这项工作,查看我的帖子,看看是否有帮助(C# Encryption to PHP Decryption)我的完整解决方案是作为第二个答案发布的。