/// <summary>
/// 验签（排序验签）
/// </summary>
/// <param name="pSArrary">待签名数组</param>
/// <param name="pSignedString">签名（支付宝返回sign）</param>
/// <param name="pPublickey">支付宝公钥</param>
/// <param name="pInputCharset">编码格式</param>
/// <returns>返回验签结果，true(相同)，false(不相同)</returns>
public static bool Verify(SortedDictionary <string, string> pSArrary, string pSignedString, string pPublickey,
string pInputCharset)
{
Dictionary <string, string> sPara = FilterPara(pSArrary);
string content = CreateLinkString(sPara);
bool b = RSAFromPkcs8.Verify(content, pSignedString, pPublickey, pInputCharset);
return(b);
}
/// <summary>
/// 签名
/// </summary>
/// <param name="dicArrayPre">待签名字符串</param>
/// <param name="privatekey">商户私钥</param>
/// <param name="input_charset">编码格式</param>
/// <returns>经过UrlEncode转码后的签名字符串</returns>
public static string BuildMysign(SortedDictionary <string, string> dicArrayPre, string privatekey, string input_charset)
{
Dictionary <string, string> dicArray = FilterPara(dicArrayPre);
string prestr = CreateLinkString(dicArray);
string mysign = RSAFromPkcs8.Sign(prestr, privatekey, input_charset);
mysign = HttpUtility.UrlEncode(mysign, Encoding.GetEncoding(input_charset)); //此处需要对签名进行Encode，否则出现+号等特殊字符，通过base64转换并post提交给支付宝服务器会丢失，变成空格
return(mysign);
}
/// <summary>
/// 解析远程模拟提交后返回的信息
/// </summary>
/// <param name="pStrText">要解析的字符串</param>
/// <param name="pSignType">加密方式</param>
/// <param name="pPrivateKey">RSA加密算法的私有密钥</param>
/// <param name="InputCharset">编码方式</param>
/// <returns>解析结果</returns>
public static Dictionary <string, string> ParseResponse(string pStrText, string pSignType, string pPrivateKey, string InputCharset)
{
//以“&”字符切割字符串
string[] strSplitText = pStrText.Split('&');
//把切割后的字符串数组变成变量与数值组合的字典数组
Dictionary <string, string> dicText = new Dictionary <string, string>();
for (int i = 0; i < strSplitText.Length; i++)
{
//获得第一个=字符的位置
int nPos = strSplitText[i].IndexOf('=');
//获得字符串长度
int nLen = strSplitText[i].Length;
//获得变量名
string strKey = strSplitText[i].Substring(0, nPos);
//获得数值
string strValue = strSplitText[i].Substring(nPos + 1, nLen - nPos - 1);
//放入字典类数组中
dicText.Add(strKey, strValue);
}
if (dicText["res_data"] != null)
{
//解析加密部分字符串（RSA与MD5区别仅此一句）
if (pSignType == "0001")
{
dicText["res_data"] = RSAFromPkcs8.DecryptData(dicText["res_data"], pPrivateKey, InputCharset);
}
//token从res_data中解析出来（也就是说res_data中已经包含token的内容）
XmlDocument xmlDoc = new XmlDocument();
try
{
xmlDoc.LoadXml(dicText["res_data"]);
string strRequest_token = xmlDoc.SelectSingleNode("/direct_trade_create_res/request_token").InnerText;
dicText.Add("request_token", strRequest_token);
}
catch (Exception exp)
{
throw exp;
}
}
return(dicText);
}
/// <summary>
/// 解密
/// </summary>
/// <param name="pContent">待解密字符串</param>
/// <param name="pPrivateKey">商户私钥</param>
/// <param name="pInputCharset">编码格式</param>
/// <returns>返回明文</returns>
public static string Decrypt(string pContent, string pPrivateKey, string pInputCharset)
{
string strDecryptData = RSAFromPkcs8.DecryptData(pContent, pPrivateKey, pInputCharset);
return(strDecryptData);
}
/// <summary>
/// 验签（不排序 Notify验签用这个）
/// </summary>
/// <param name="pContent">待验签字符串</param>
/// <param name="pSignedString">签名（支付宝返回sign）</param>
/// <param name="pPublickey">支付宝公钥</param>
/// <param name="pInputCharset">编码格式</param>
/// <returns>返回验签结果，true(相同)，false(不相同)</returns>
public static bool Verify(string pContent, string pSignedString, string pPublickey, string pInputCharset)
{
bool b = RSAFromPkcs8.Verify(pContent, pSignedString, pPublickey, pInputCharset);
return(b);
}