/// <summary>
///生成授权码
/// </summary>
/// <param name="mac">网卡物理地址</param>
/// <param name="expireTime">到时时间</param>
/// <param name="category">授权类型0=开发 1=产品</param>
/// <param name="sPublicKey">公钥</param>
/// <returns></returns>
public static string Encrypt(string mac, DateTime expireTime, int category, string sPublicKey)
{
var now = DateTime.Now.ToString("yyyyMMddHHmmss");
var macFormart = mac.Replace(":", "").Replace("-", "");
var ran = new Random();
var randKey = ran.Next(1000, 9999);
//14+12+10+1+4 防止同一个授权信息生成相同的授权码
string source = $"{now}{macFormart}{expireTime.ToString("yyyy-MM-dd")}{category}{randKey}";
return(RSACryptoService.EncryptString(source, sPublicKey));
}
/// <summary>
/// 解密授权码
/// </summary>
/// <param name="sSource">授权码</param>
/// <param name="sPrivateKey">私钥</param>
/// <returns>授权信息</returns>
private static AuthorizationCode Decrypt(string sSource, string sPrivateKey)
{
var authorizationCode = new AuthorizationCode();
var code = RSACryptoService.DecryptString(sSource, sPrivateKey);
authorizationCode.Mac = code.Substring(14, 12);
authorizationCode.Category = Convert.ToInt32(code.Substring(36, 1));
DateTime expireTime;
DateTime.TryParse(code.Substring(26, 10), out expireTime);
authorizationCode.ExpireTime = expireTime;
return(authorizationCode);
}
/// <summary>
/// 解密授权码
/// </summary>
/// <param name="sSource">授权码</param>
/// <param name="publicKey">公钥</param>
/// <returns>授权信息</returns>
public static AuthorizationCode Decrypt(string sSource, string publicKey)
{
var authorizationCode = new AuthorizationCode();
var code = RSACryptoService.DecryptString(sSource, publicKey);
string[] authorizationCodes = code.Split(new string[] { Flag }, StringSplitOptions.RemoveEmptyEntries);
if (authorizationCodes.Length < 5)
{
return(authorizationCode);
}
authorizationCode.CheckCode = authorizationCodes[1];
authorizationCode.Category = Convert.ToInt16(authorizationCodes[3]);
DateTime expireTime;
DateTime.TryParse(authorizationCodes[2], out expireTime);
authorizationCode.ExpireTime = expireTime;
return(authorizationCode);
}