/// <summary>
/// 支付宝支付服务端签名生成 [REA]
/// </summary>
/// <param name="parameters">业务参数</param>
/// <param name="privateKeyPem">REA私钥</param>
/// <returns></returns>
public static string SignAlipayPay(IDictionary <string, string> parameters, string privateKeyPem)
{
// 第一步：把字典按Key的字母顺序排序
IDictionary <string, string> sortedParams = new SortedDictionary <string, string>(parameters);
IEnumerator <KeyValuePair <string, string> > dem = sortedParams.GetEnumerator();
// 第二步：把所有参数作为JSON串
StringBuilder query = new StringBuilder();
Dictionary <string, string> dic = new Dictionary <string, string>();
while (dem.MoveNext())
{
string key = dem.Current.Key;
object value = dem.Current.Value;
query.Append(key);
query.Append("=");
query.Append("\"" + value + "\"");
query.Append("&");
}
var content = query.Remove(query.Length - 1, 1);
var result = RSAFromPkcs8.sign(content.ToString(), privateKeyPem, "utf-8");
content.Append("&sign_type=\"RSA\"&sign=\"" + result + "\"");
return(content.ToString());
}
/// <summary>
/// 签名
/// </summary>
/// <param name="content">待签名字符串</param>
/// <param name="privateKey">私钥</param>
/// <param name="input_charset">编码格式</param>
/// <returns>签名后字符串</returns>
public static string GetRSAFromPkcs8Sign(string content, string privateKey, string input_charset)
{
return(RSAFromPkcs8.sign(content, privateKey, input_charset));
}