public static string SignWithKey(WeChatPayDictionary dictionary, string key, WeChatPaySignType signType)
{
var sb = new StringBuilder();
foreach (var iter in dictionary)
{
if (!string.IsNullOrEmpty(iter.Value) && iter.Key != "sign")
{
sb.Append(iter.Key).Append('=').Append(iter.Value).Append("&");
}
}
var signContent = sb.Append("key=").Append(key).ToString();
switch (signType)
{
case WeChatPaySignType.MD5:
return(MD5.Compute(signContent).ToUpperInvariant());
case WeChatPaySignType.HMAC_SHA256:
return(HMACSHA256.Compute(signContent, key).ToUpperInvariant());
default:
throw new WeChatPayException("Unknown sign type!");
}
}
private static void HMacSha256Sample()
{
var s = "hello hmac sha256";
var k = HMACSHA256.GeneratorKey();
Console.WriteLine(Base64.ToBase64String(HMACSHA256.Compute(s, k)));
Console.WriteLine(Base64.ToBase64String(HMACSHA256.Compute2(s, k)));
}
private static string LianlianpayEncrypt(string req, ICipherParameters public_key, string hmack_key, string version, string aes_key, string nonce)
{
var base64_hmack_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(hmack_key, public_key);
var base64_aes_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(aes_key, public_key);
var base64_nonce = Convert.ToBase64String(Encoding.UTF8.GetBytes(nonce));
var iv = CreateCtrIv(Encoding.UTF8.GetBytes(nonce));
var encry = AES_CTR_NoPadding.Encrypt(req, aes_key, iv);
var data = base64_nonce + "$" + encry;
var sign = HMACSHA256.Compute(Encoding.UTF8.GetBytes(data), Encoding.UTF8.GetBytes(hmack_key));
var base64_sign = Convert.ToBase64String(sign);
return(version + "$" + base64_hmack_key + "$" + base64_aes_key + "$" + base64_nonce + "$" + encry + "$" + base64_sign);
}
private static string LianlianpayEncrypt(string req, AsymmetricKeyParameter public_key, string hmack_key, string version, string aes_key, string nonce)
{
var b64Hmack_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(hmack_key, public_key);
var b64Aes_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(aes_key, public_key);
var b64Nonce = Convert.ToBase64String(Encoding.UTF8.GetBytes(nonce));
var iv = CreateCtrIv(Encoding.UTF8.GetBytes(nonce));
var encry = AES_CTR_NoPadding.Encrypt(req, aes_key, iv);
var message = b64Nonce + "$" + encry;
var sign = HMACSHA256.Compute(Encoding.UTF8.GetBytes(message), Encoding.UTF8.GetBytes(hmack_key));
var b64Sign = Convert.ToBase64String(sign);
return(version + "$" + b64Hmack_key + "$" + b64Aes_key + "$" + b64Nonce + "$" + encry + "$" + b64Sign);
}
public static string SignWithKey(SortedDictionary <string, string> parameters, string key, bool signType = true, bool excludeSignType = true)
{
var sb = new StringBuilder();
foreach (var iter in parameters)
{
if (!string.IsNullOrEmpty(iter.Value) && iter.Key != "sign" && (excludeSignType ? iter.Key != "sign_type" : true))
{
sb.Append(iter.Key).Append('=').Append(iter.Value).Append("&");
}
}
var signContent = sb.Append("key=").Append(key).ToString();
return(signType ? MD5.Compute(signContent).ToUpper() : HMACSHA256.Compute(signContent, key).ToUpper());
}
public async Task <string> GetOpenId(string code, string appid, string secret)
{
var timestamp = TimeStamp();
var signature = HMACSHA256.Compute(timestamp, secret);
var requestUri =
$"https://oapi.dingtalk.com/sns/getuserinfo_bycode?accessKey={appid}×tamp={timestamp}&signature={HttpUtility.UrlEncode(signature)}";
var request = new HttpRequestMessage(HttpMethod.Post, requestUri);
request.Content = new StringContent(JsonConvert.SerializeObject(new { tmp_auth_code = code }), Encoding.UTF8, "application/json");
var tokenResponse = await _client.SendAsync(request);
tokenResponse.EnsureSuccessStatusCode();
var text = await tokenResponse.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject <DingTalkUserResponse>(text);
if (result.Errcode == 0)
{
return(result.UserInfo.Openid);
}
throw new Exception($"获取用户钉钉信息出错，{result.Errmsg}");
}
/// <summary>
/// 加密明文密码入库
/// </summary>
public string EncryptPassword(string password, string salt)
{
return(HMACSHA256.Compute($"{salt}{password}", _appSettings.HS256Key));
}
