/// <summary>
/// 生成请求时的签名
/// </summary>
/// <param name="sPara">请求给支付宝的参数数组</param>
/// <returns>签名结果</returns>
private static string BuildRequestMysign(Dictionary <string, string> sPara)
{
//把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
string prestr = AlipayCore.CreateLinkString(sPara);
//把最终的字符串签名，获得签名结果
string mysign = "";
switch (_sign_type)
{
case "MD5":
mysign = AlipayMD5.Sign(prestr, _key, _input_charset);
break;
case "RSA":
mysign = AlipayRSA.sign(prestr, _private_key, _input_charset);
break;
case "0001":
mysign = AlipayRSA.sign(prestr, _private_key, _input_charset);
break;
default:
mysign = "";
break;
}
return(mysign);
}
/// <summary>
/// 生成要请求给支付宝的参数数组
/// </summary>
/// <param name="sParaTemp">请求前的参数数组</param>
/// <returns>要请求的参数数组</returns>
private static Dictionary <string, string> BuildRequestPara(Dictionary <string, string> sParaTemp)
{
//待签名请求参数数组
Dictionary <string, string> sPara = new Dictionary <string, string>();
//签名结果
string mysign = "";
//过滤签名参数数组
sPara = AlipayCore.FilterPara(sParaTemp);
//根据字母a到z的顺序把参数排序
sPara = AlipayCore.SortPara(sPara);
//获得签名结果
mysign = BuildRequestMysign(sPara);
//签名结果与签名方式加入请求提交参数组中
sPara.Add("sign", mysign);
if (sPara["service"] != "alipay.wap.trade.create.direct" && sPara["service"] != "alipay.wap.auth.authAndExecute")
{
sPara.Add("sign_type", _sign_type);
}
return(sPara);
}
/// <summary>
/// 生成要请求给支付宝的参数数组
/// </summary>
/// <param name="sParaTemp">请求前的参数数组</param>
/// <param name="code">字符编码</param>
/// <returns>要请求的参数数组字符串</returns>
private static string BuildRequestParaToString(Dictionary <string, string> sParaTemp, Encoding code)
{
//待签名请求参数数组
Dictionary <string, string> sPara = new Dictionary <string, string>();
sPara = BuildRequestPara(sParaTemp);
//把参数组中所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode
string strRequestData = AlipayCore.CreateLinkStringUrlencode(sPara, code);
return(strRequestData);
}
/// <summary>
/// 获取待签名字符串（调试用）
/// </summary>
/// <param name="inputPara">通知返回参数数组</param>
/// <returns>待签名字符串</returns>
public string GetPreSignStr(Dictionary <string, string> inputPara)
{
Dictionary <string, string> sPara = new Dictionary <string, string>();
//过滤空值、sign与sign_type参数
sPara = AlipayCore.FilterPara(inputPara);
//根据字母a到z的顺序把参数排序
sPara = AlipayCore.SortPara(sPara);
//获取待签名字符串
string preSignStr = AlipayCore.CreateLinkString(sPara);
return(preSignStr);
}
/// <summary>
/// 获取返回时的签名验证结果
/// </summary>
/// <param name="inputPara">通知返回参数数组</param>
/// <param name="sign">对比的签名结果</param>
/// <param name="isSort">是否对待签名数组排序</param>
/// <returns>签名验证结果</returns>
private bool GetSignVeryfy(Dictionary <string, string> inputPara, string sign, bool isSort)
{
Dictionary <string, string> sPara = new Dictionary <string, string>();
//过滤空值、sign与sign_type参数
sPara = AlipayCore.FilterPara(inputPara);
if (isSort)
{
//根据字母a到z的顺序把参数排序
sPara = AlipayCore.SortPara(sPara);
}
else
{
sPara = SortNotifyPara(sPara);
}
//获取待签名字符串
string preSignStr = AlipayCore.CreateLinkString(sPara);
//获得签名验证结果
bool isSgin = false;
if (sign != null && sign != "")
{
switch (_sign_type)
{
case "MD5":
isSgin = AlipayMD5.Verify(preSignStr, sign, _key, _input_charset);
break;
case "RSA":
isSgin = AlipayRSA.verify(preSignStr, sign, _public_key, _input_charset);
break;
case "0001":
isSgin = AlipayRSA.verify(preSignStr, sign, _public_key, _input_charset);
break;
default:
break;
}
}
return(isSgin);
}