c# AES+RSA 加密解密_rsahelper c#-优快云博客

本文链接：https://blog.youkuaiyun.com/flasher_01/article/details/127772313

这段代码展示了如何使用RSA算法生成公钥和私钥，并结合AES算法进行数据加密和解密的过程。首先，通过RSA生成一个随机的AES密钥，然后使用AES对数据进行CBC模式的加密和解密操作。整个过程涉及到关键的加密库和方法，如RijndaelManaged，用于加密和解密的密钥和偏移量。

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        测试代码
        var publicKey = @"xxxxxx";//公钥
        string randomKey = AESEncrypt.randomStr(16);
        var EncryptKey = RSAHelper.Encript(randomKey, publicKey);
        Debug.Log("randomKey: "+ randomKey);
        Debug.Log("EncryptKey: " + EncryptKey);

        EncryptData encryptData = new EncryptData();
        encryptData.KeyData = "11111112";
        encryptData.Machine = "10000005";
        var encryptStr = JsonConvert.SerializeObject(encryptData);

        string iv = "eAFmBHVilJgOTql1";
        string encodeData = AESEncrypt.EnCode(encryptStr, randomKey, iv);
        Debug.Log("加密后:" + encodeData);
        string decodeData = AESEncrypt.DeCode(encodeData, randomKey, iv);
        Debug.Log("解密后:" + decodeData);


public class AESEncrypt
{
    public static string randomStr(int len)
    {
        string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnoprstuvwxyz1234567890";
        var maxPos = chars.Length;
        string pwd = "";
        for (int i = 0; i < len; i++)
        {
            char c = chars[UnityEngine.Random.Range(0, chars.Length)];
            pwd += c;
        }

        return pwd;

    }
    /// <summary>
    /// 加密数据
    /// </summary>
    /// <param name="data">明文数据</param>
    /// <param name="key">密钥</param>
    /// <param name="iv">偏移</param>
    /// <returns></returns>
    public static string EnCode(string data, string key, string iv)
    {
        try
        {
            byte[] keyArray = Encoding.UTF8.GetBytes(key);
            byte[] ivArray = Encoding.UTF8.GetBytes(iv);
            byte[] toEncryptArray = Encoding.UTF8.GetBytes(data);
            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.IV = ivArray;
            rDel.Mode = CipherMode.CBC;
            rDel.Padding = PaddingMode.PKCS7;
            ICryptoTransform cTransform = rDel.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }
        catch (Exception e)
        {
            return null;
        }
    }

    /// <summary>
    /// 解密数据
    /// </summary>
    /// <param name="data">加密内容</param>
    /// <param name="key">密钥</param>
    /// <param name="iv">偏移</param>
    /// <returns></returns>
    public static string DeCode(string data, string key, string iv)
    {
        try
        {
            byte[] keyArray = Encoding.UTF8.GetBytes(key);
            byte[] ivArray = Encoding.UTF8.GetBytes(iv);
            byte[] toEncryptArray = Convert.FromBase64String(data);

            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.IV = ivArray;
            rDel.Mode = CipherMode.CBC;
            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Encoding.UTF8.GetString(resultArray);
        }
        catch
        {
            return null;
        }
    }
}