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短信发送AZDG加密算法

2024-07-05 22:53:52   225人阅读

Username:用户名,采用AZDG加密方式进行加密

Passwrod:密码,采用AZDG加密方式进行加密

密钥为:chinagdn

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/// <summary>
/// 短信发送AZDG加密算法
/// </summary>
/// <param name="txt">加密字符串</param>
/// <param name="key">私有密钥</param>
/// <returns></returns>
public static string passport_encrypt(string txt, string key)
{
    // 使用随机数产生 0~32000 的值并 MD5()
    Random rnd = new Random(100);
    int int_encrypt_key = rnd.Next(0, 32000);
    string encrypt_key = int_encrypt_key.ToString();
 
    int ctr = 0;
    string tmp = "";
    byte[] encodebyte = new byte[txt.Length];
    for (int i = 0; i < txt.Length; i++)
    {
        ctr = ctr == encrypt_key.Length ? 0 : ctr;
 
        char prefix = encrypt_key[ctr];
        char left = txt[i];
        char right = encrypt_key[ctr++];
 
        encodebyte[i] = (byte)(left ^ right);
        char[] block = new char[2];
        block[0] = prefix;
        block[1] = Convert.ToChar(encodebyte[i]);
        tmp += new string(block);
    }
    //用base64编码
    string complicatedstring = passport_key(tmp, key);//先和key加一次密？
 
    byte[] inputbytes = System.Text.Encoding.Default.GetBytes(complicatedstring);
 
    string string_64 = Convert.ToBase64String(inputbytes, 0, inputbytes.Length);//再和随机key加密
 
 
    return string_64;
}
/// <summary>
/// Passport 解密函数
/// </summary>
/// <param name="txt">加密后的字串</param>
/// <param name="key">私有密匙(用于解密和加密)</param>
/// <returns>字串经过私有密匙解密后的结果</returns>
public static string passport_decrypt(string txt, string key)
{
    byte[] array_64 = Convert.FromBase64String(txt);
    string txt_64 = System.Text.Encoding.Default.GetString(array_64);
    txt = passport_key(txt_64, key);
 
    string temp = "";
    byte[] encodebyte = new byte[txt.Length];
    for (int i = 0; i < txt.Length; i++)
    {
 
        char left = txt[i];
        char right = txt[++i];
        encodebyte[i] = (byte)(left ^ right);
    }
    temp = System.Text.Encoding.Default.GetString(encodebyte);
    return temp;
}
/// <summary>
/// Passport 密匙处理函数
/// </summary>
/// <param name="txt">待加密或待解密的字串</param>
/// <param name="encrypt_key">私有密匙(用于解密和加密)</param>
/// <returns>处理后的密匙</returns>
public static string passport_key(string txt, string encrypt_key)
{
    //先md5编码
    encrypt_key =
         System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(encrypt_key, "MD5").ToString().ToLower();
    int ctr = 0;
    string tmp = "";
    byte[] encodebyte = new byte[txt.Length];
    for (int i = 0; i < txt.Length; i++)
    {
        ctr = ctr == encrypt_key.Length ? 0 : ctr;
        char left = txt[i];
        char right = encrypt_key[ctr++];
        encodebyte[i] = (byte)(left ^ right);
    }
    tmp = System.Text.Encoding.Default.GetString(encodebyte);
    return tmp;
}

 

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//插入下发短信
 string message = smsclient.InsertDownSms(passport_encrypt(username, "chinagdn"), passport_encrypt(password, "chinagdn"), "", sb.ToString());

 


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