.net 支付宝应用网页验签

news2025/10/31 21:36:43

验证签名接口

/// <summary>
        /// 验证网关
        /// </summary>
        /// <returns></returns>
        [Route("gatewayVerify"), HttpPost, AllowAnonymous, NonUnify]
        public async Task<dynamic> gatewayVerify()
        {
            var Request = App.HttpContext.Request; //获取当前回调的请求
            var dict = Request.Form.ToDictionary(x => x.Key, x => x.Value.ToString());

            bool result = RSACheck(dict);
            if (result)
            {
                string singText = $"<success>true</success>";//带签名字段
                string sign = AlipaySignature.Sign(singText, app_private_key_PKCS1, "GBK", "RSA2", false);//签名
                string refSing = $"<?xml version=\"1.0\" encoding=\"GBK\"?><alipay><response><success>true</success></response><sign>{sign}</sign><sign_type>RSA2</sign_type></alipay>";
                return refSing;
            }
            return null;
        }

封装SDK中的验签方法

/// <summary>
        /// 验证签名
        /// </summary>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public static bool RSACheck(IDictionary<string, string> parameters)
        {
            string charset = "utf-8";
            string signType = "RSA2";
            if (!string.IsNullOrEmpty(parameters["charset"].ToString()))
            {
                charset = parameters["charset"].ToString();
            }
            if (!string.IsNullOrEmpty(parameters["sign_type"].ToString()))
            {
                signType= parameters["sign_type"].ToString();
            }
            if (signType== "RSA2")
            {
                return AlipaySignature.RSACertCheckV2(parameters, alipayCertPublicKey, charset, signType);
            }
            else
            {
                return AlipaySignature.RSACertCheckV1(parameters, alipayCertPublicKey, charset, signType);
            }
           
        }