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C＃AES 128 CBC与-naltalt产生的结果不同于openssl AES -128-cbc -nosalt

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我有一个来自第三方的加密示例，我需要与...集成

我应该发送他们加密的消息，他们确实解密它并执行所需的操作 .

他们为我提供了一个示例，就是他们期望字符串被加密的方式 .

echo -n ['String to encrypt'] | openssl enc -aes-128-cbc -A -a -nosalt -K [Hexption EncryptionKey] -iv 3030303030303030303030303030303030

我给出的沙盒encryptionKey Hex是313233343536373839

目前我无法使用上面指定的密钥和IV ...因为.Net中的AES实现引发了我的错误，其中显示“指定的密钥不是此算法的有效大小”

然后我只用0填充键以匹配32个字节并截断IV以匹配16个字节..

然后我能够至少运行代码但是我的c＃代码中的加密字符串无法在openssl上解密 .

以下是我的代码..

public static string EncryptString(string plainText, string password)
    {

        byte[] key, iv;
        //converting key to hex
        byte[] ba = Encoding.ASCII.GetBytes("0123456789abcdef");
        string encryptionKeyHex = BitConverter.ToString(ba);
        encryptionKeyHex = encryptionKeyHex.Replace("-", "");

        // Padding key hex with zeros to match the size that .Net algo expects
        if (encryptionKeyHex.Length < 32)
        {
            while (encryptionKeyHex.Length < 32)
            {
                encryptionKeyHex += "0";
            }
        }

        var keyBytes = Encoding.ASCII.GetBytes(encryptionKeyHex);
        var ivBytes = Encoding.ASCII.GetBytes("3030303030303030"); // truncated the original IV specified in the question description to match the size.

        iv = ivBytes;
        key = keyBytes;

        var amAes = new AesManaged();
        amAes.Mode = CipherMode.CBC;
        amAes.Padding = PaddingMode.PKCS7;
        amAes.KeySize = 128;
        amAes.BlockSize = 128;
        amAes.Key = key;
         amAes.IV = iv;

        var icTransformer = amAes.CreateEncryptor();
        var msTemp = new MemoryStream();

        var csEncrypt = new CryptoStream(msTemp, icTransformer, CryptoStreamMode.Write);
        var sw = new StreamWriter(csEncrypt);
        sw.Write(plainText);
        sw.Close();
        sw.Dispose();

        csEncrypt.Clear();
        csEncrypt.Dispose();

        byte[] bResult = msTemp.ToArray();
        //var sha = new SHA1CryptoServiceProvider();
        //var result = sha.ComputeHash(bResult);
        string sResult = Convert.ToBase64String(bResult);
        sResult = HttpUtility.UrlEncode(sResult);

        if (System.Diagnostics.Debugger.IsAttached)
        {
            string debugDetails = "";
            debugDetails += "==> INPUT     : " + plainText + Environment.NewLine;
            debugDetails += "==> SECRET    : " + password + Environment.NewLine;
            //debugDetails += "==> SALT      : " + Program.ByteArrayToHexString(salt) + Environment.NewLine;
            debugDetails += "==> KEY       : " + Encoding.ASCII.GetString(amAes.Key) + " (" + amAes.KeySize.ToString() + ")" + Environment.NewLine;
            debugDetails += "==> IV        : " + Encoding.ASCII.GetString(amAes.IV) + Environment.NewLine;
            debugDetails += "==> ENCRYPTED : " + sResult;
            Console.WriteLine(debugDetails);
        }

        return sResult;
    }

OUTPUT：

==> INPUT：{“filter.accession_number.equals”：“0987654321”}

==> SECRET：==> KEY：30313233343536373839000000000000（256）

==> IV：3030303030303030

==>加密：B2uDRjnekFAlRDEKDldTs09lWiE4u16ZunVwDGi6gKm6YsaRlW4HU6eKJqfYZc7b

Update

已经注意到，使用相同的方法在Windows框上加密时比在Linux Box上获得不同的结果 .

在使用openssl的linux机器上，我们得到..

命令：echo -n'{“filter.accession_number.equals”：“0987654321”}'| openssl enc -aes-128-cbc -A -a -nosalt -K 313233343536373839 -iv 3030303030303030303030303030303030

结果：MTAusb6rYkxYf9 / REbFq9M1XwR 6Q58FfSJPTxDNwgs6z3jZ8ru 7ysnKuy2p3ox

加密的字符串工作得很好..我能够成功解密它 .

在windows框上发出相同的命令到openssl给我们..

命令：echo -n'{“filter.accession_number.equals”：“0987654321”}'| openssl enc -aes-128-cbc -A -a -nosalt -K 313233343536373839 -iv 3030303030303030303030303030303030

结果：Db9829q6QX6CPwLkE rs6zqRJJQaGZ9xk7fbztaGqsKcHPcr7equz3yOJPLc S6yvW4jXQTzoOk43F16GW7sPw ==

这个字符串不起作用......

c# encryption openssl cryptography aes

2 回答

  • 1

    你只是忘了解码十六进制; Encoding.ASCII.GetBytes 仅获取密钥和IV的ASCII表示 .

    检查答案here以正确转换为字节（即用 StringToByteArray 替换 Encoding.ASCII.GetBytes ） .

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  • 0

    以下是任何陷入类似问题的人的工作代码示例... @Maarten Bodewes您确实指出了我正确的方向，只需重新安排代码使其工作 . 谢谢 ：）

    public static string EncryptString(string plainText)
    {
        byte[] key, iv;

        byte[] rawKey = Encoding.ASCII.GetBytes("123456789abcdef");
        string encryptionKeyHex = BitConverter.ToString(rawKey);

        byte[] hexKayBytes = FromHex(encryptionKeyHex); // convert to bytes with 'dashes'
        byte[] data = FromHex("30-30-30-30-30-30-30-30-30-30-30-30-30-30-30-30");

        encryptionKeyHex = ByteArrayToHexString(hexKayBytes);

// modifying key size to match the algorithm validation on key size

        if (encryptionKeyHex.Length < 32)
        {
            while (encryptionKeyHex.Length < 32)
            {
                encryptionKeyHex += "0";
            }
        }

        var ivOriginal = BitConverter.ToString(data);
        ivOriginal = ivOriginal.Replace("-", "");

        if (ivOriginal.Length < 16)
        {
            while (ivOriginal.Length < 16)
            {
                ivOriginal += "0";
            }
        }            

        var keyBytes = StringToByteArray(encryptionKeyHex);
        var ivBytes = StringToByteArray(ivOriginal);

        iv = ivBytes;
        key = keyBytes;

        var amAes = new AesManaged();
        amAes.Mode = CipherMode.CBC;
        amAes.Padding = PaddingMode.PKCS7;
        amAes.KeySize = 128;
        amAes.BlockSize = 128;
        amAes.Key = key;
         amAes.IV = iv;

        var icTransformer = amAes.CreateEncryptor();
        var msTemp = new MemoryStream();

        var csEncrypt = new CryptoStream(msTemp, icTransformer, CryptoStreamMode.Write);
        var sw = new StreamWriter(csEncrypt);
        sw.Write(plainText);
        sw.Close();
        sw.Dispose();

        csEncrypt.Clear();
        csEncrypt.Dispose();

        byte[] bResult = msTemp.ToArray();
        string sResult = Convert.ToBase64String(bResult);

        if (System.Diagnostics.Debugger.IsAttached)
        {
            string debugDetails = "";
            debugDetails += "==> INPUT     : " + plainText + Environment.NewLine;
            debugDetails += "==> SECRET    : " + password + Environment.NewLine;
            //debugDetails += "==> SALT      : " + Program.ByteArrayToHexString(salt) + Environment.NewLine;
            debugDetails += "==> KEY       : " + Encoding.ASCII.GetString(amAes.Key) + " (" + amAes.KeySize.ToString() + ")" + Environment.NewLine;
            debugDetails += "==> IV        : " + Encoding.ASCII.GetString(amAes.IV) + Environment.NewLine;
            debugDetails += "==> ENCRYPTED : " + sResult;
            Console.WriteLine(debugDetails);
        }

        return sResult;
    }

    public static byte[] FromHex(string hex)
    {
        hex = hex.Replace("-", "");
        byte[] raw = new byte[hex.Length / 2];
        for (int i = 0; i < raw.Length; i++)
        {
            raw[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
        }
        return raw;
    }

    private static string ByteArrayToHexString(byte[] bytes)
    {
        StringBuilder sbHex = new StringBuilder();

        foreach (byte b in bytes)
            sbHex.AppendFormat("{0:x2}", b);

        return sbHex.ToString();
    }

    public static byte[] StringToByteArray(String hex)
    {
        int NumberChars = hex.Length;
        byte[] bytes = new byte[NumberChars / 2];
        for (int i = 0; i < NumberChars; i += 2)
            bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
        return bytes;
    }
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