/// <summary>
/// 对待签名数据计算签名并赋值certid,signature字段返回签名后的报文
/// </summary>
/// <param name="reqData"></param>
/// <param name="encoding">编码</param>
/// <param name="certPath">证书路径</param>
/// <param name="certPwd">证书密码</param>
/// <returns></returns>
public static void Sign(Dictionary <string, string> reqData, Encoding encoding, string certPath, string certPwd)
{
reqData["certId"] = CertUtil.GetSignCertId(certPath, certPwd);
//将Dictionary信息转换成key1=value1&key2=value2的形式
string stringData = SDKUtil.CreateLinkString(reqData, true, false);
log.Info("待签名排序串：[" + stringData + "]");
string stringSign = null;
byte[] signDigest = SecurityUtil.Sha1X16(stringData, encoding);
string stringSignDigest = BitConverter.ToString(signDigest).Replace("-", "").ToLower();
log.Info("sha1结果：[" + stringSignDigest + "]");
byte[] byteSign = SecurityUtil.SignBySoft(CertUtil.GetSignProviderFromPfx(certPath, certPwd), encoding.GetBytes(stringSignDigest));
stringSign = Convert.ToBase64String(byteSign);
log.Info("签名结果：[" + stringSign + "]");
//设置签名域值
reqData["signature"] = stringSign;
}