C sharp¶

/// <summary>
/// 解密类
/// </summary>
public class RC4
{

    public byte[] Encrypt(byte[] pwd, byte[] data)
    {
        int a, i, j, k, tmp;
        int[] key, box;
        byte[] cipher;

        key = new int[256];
        box = new int[256];
        cipher = new byte[data.Length];

        for (i = 0; i < 256; i++)
        {
            key[i] = pwd[i % pwd.Length];
            box[i] = i;
        }
        for (j = i = 0; i < 256; i++)
        {
            j = (j + box[i] + key[i]) % 256;
            tmp = box[i];
            box[i] = box[j];
            box[j] = tmp;
        }
        for (a = j = i = 0; i < data.Length; i++)
        {
            a++;
            a %= 256;
            j += box[a];
            j %= 256;
            tmp = box[a];
            box[a] = box[j];
            box[j] = tmp;
            k = box[((box[a] + box[j]) % 256)];
            cipher[i] = (byte)(data[i] ^ k);
        }
        return cipher;
    }

    public byte[] Decrypt(byte[] pwd, byte[] data)
    {
        return Encrypt(pwd, data);
    }

}

[Serializable]
[JsonObject(MemberSerialization.OptIn)]
public class SmartPhoneResult
{
    /// <summary>
    /// 结果码
    /// </summary>
    [JsonProperty(PropertyName = "errcode")]
    public string ErrCode { get; set; }

    /// <summary>
    /// 返回信息
    /// </summary>
    [JsonProperty(PropertyName = "errmsg")]
    public string ErrMsg { get; set; }

    /// <summary>
    /// 实际数据
    /// </summary>
    [JsonProperty(PropertyName = "data")]
    public object Data { get; set; }

}

public class EhrRC4Case
{
    /// <summary>
    /// 解密方法
    /// </summary>
    /// <returns></returns>
    public string Decrypt()
    {
        try
        {
            string corpSecret = "{你的企业的corp_secret}";
            string accessToken = "{你的企业的access_token}";

            string url = string.Format("https://openapi.2haohr.com/api/departments/?access_token={0}", accessToken);

            string result = Get(url);
            //接口数据反序列化
            SmartPhoneResult smartPhoneResult = JsonConvert.DeserializeObject<SmartPhoneResult>(result);

            //解密
            //取data数据转换二进制
            byte[] bytes = Convert.FromBase64String(smartPhoneResult.Data.ToString());
            RC4 rc = new RC4();
            byte[] pasText = rc.Decrypt(Encoding.UTF8.GetBytes(corpSecret), bytes);
            string dataReal = Base64StringToString(Convert.ToBase64String(pasText));
            return dataReal;
        }
        catch (Exception ex)
        {

            return  ex.ToString();
        }

    }

    public static string Base64StringToString(string base64)
    {
        if (base64 != "")
        {
            char[] charBuffer = base64.ToCharArray();
            byte[] bytes = Convert.FromBase64CharArray(charBuffer, 0, charBuffer.Length);
            string returnstr = Encoding.UTF8.GetString(bytes);
            return returnstr;
        }
        else
        {
            return "";
        }
    }

    public string Get(string url)
    {
        //取接口数据
        System.Net.HttpWebRequest request = System.Net.WebRequest.Create(url) as System.Net.HttpWebRequest;
        request.Method = "GET";
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Ssl3;
        System.Net.HttpWebResponse response = request.GetResponse() as System.Net.HttpWebResponse;
        System.IO.StreamReader sr = new System.IO.StreamReader(response.GetResponseStream(), Encoding.UTF8);
        string result = sr.ReadToEnd();
        sr.Close();
        return result;
    }
}