public void SaveDataAsPdf(string outputFileName)
{
var base32 = GetDataAsBase32String();
var pdfDocument = new PdfDocument();
var pages = base32.Split(MaxLettersPerPage);
var pageIndex = 1;
foreach (var page in pages)
{
var qrCode = GetQrCodeAsBmpImage(new MetaData
{
TotalDataSize = (uint)base32.Length,
DataChunkSize = (uint)page.Length,
ChunkId = (uint)pageIndex,
Checksum = Sha1Helper.ComputeSha1Checksum(page)
});
var pdfPage = pdfDocument.AddPage();
var gfx = XGraphics.FromPdfPage(pdfPage);
AddQrCodeToPage(qrCode, gfx);
WriteTextOnPage(page.Split(MaxLettersPerRow), gfx);
pageIndex++;
}
pdfDocument.Save(outputFileName);
}
private static TServerDHParamsOk SerializeResponse(TPQInnerData pqInnerData, TServerDHInnerData dhInnerData)
{
var dhInnerDataBuffer = Serializer.Serialize(dhInnerData);
byte[] answer;
try
{
answer = dhInnerDataBuffer.ToArray();
}
finally
{
dhInnerDataBuffer.SafeRelease();
}
var hashsum = Sha1Helper.ComputeHashsum(answer);
var answerWithHash = hashsum.Concat(answer).ToArray();
AesHelper.ComputeAesParameters(pqInnerData.NewNonce, pqInnerData.ServerNonce, out var aesKeyData);
var encryptedAnswer = AES.EncryptAes(aesKeyData, answerWithHash);
return(new TServerDHParamsOk
{
EncryptedAnswerAsBinary = encryptedAnswer,
Nonce = pqInnerData.Nonce,
ServerNonce = pqInnerData.ServerNonce
});
}
private static RequestSetClientDHParams SerializeRequest(TClientDHInnerData clientDhInnerData, AesKeyData aesKeyData)
{
var dhInnerDataBuffer = Serializer.Serialize(clientDhInnerData);
byte[] innerData;
try
{
Serializer.Serialize(clientDhInnerData);
innerData = dhInnerDataBuffer.ToArray();
}
finally
{
dhInnerDataBuffer.SafeRelease();
}
var hashsum = Sha1Helper.ComputeHashsum(innerData);
var answerWithHash = hashsum.Concat(innerData).ToArray();
var encryptedAnswer = AES.EncryptAes(aesKeyData, answerWithHash);
return(new RequestSetClientDHParams
{
EncryptedDataAsBinary = encryptedAnswer,
Nonce = clientDhInnerData.Nonce,
ServerNonce = clientDhInnerData.ServerNonce
});
}
public async Task <HttpResponseMessage> GetTicket([FromUri] string code)
{
if (string.IsNullOrEmpty(code))
{
return(Request.CreateResponse(HttpStatusCode.BadRequest, Error.LackInfo));
}
string openid = await OpenIdHelper.GetOpenIdAsync(code);
//string openid = "o5dhF1EKpj54qs6-GNoYtLPUSUOA";
if (string.IsNullOrEmpty(openid))
{
return(Request.CreateResponse(HttpStatusCode.BadRequest, Error.LackInfo));
}
EmployeeMap employeeMap = new EmployeeMap();
employeeMap.OpenId = openid;
employeeMap.Code = code;
string sql = @"select * from Employee where OpenId = @OpenId";
try
{
using (IDbConnection connection = new SqlConnection(DBHelper.GetConnectionString()))
{
var employeeMaps = connection.Query <EmployeeMap>(sql, employeeMap);
if (employeeMaps == null || employeeMaps.Count() <= 0)
{
return(Request.CreateResponse(HttpStatusCode.NotFound, Error.NotFound));
}
sql = @"select top 1 * from AccessToken order by ExpireTime desc";
var tickets = connection.Query <AccessToken>(sql);
if (tickets == null || tickets.Count() <= 0)
{
return(Request.CreateResponse(HttpStatusCode.NotFound, Error.NotFound));
}
string noncestr = ConfigurationManager.AppSettings["noncestr"].ToString();
string timestamp = ConfigurationManager.AppSettings["timestamp"].ToString();
string url = HttpContext.Current.Request.UrlReferrer.AbsoluteUri;
string ticket = tickets.ToList()[0].Ticket;
string signature = Sha1Helper.SHA1Encrypt($"jsapi_ticket={ticket}&noncestr={noncestr}×tamp={timestamp}&url={url}");
JObject result = new JObject();
result["sig"] = signature;
result["openid"] = openid;
return(Request.CreateResponse(HttpStatusCode.OK, result));
//HttpContext.Current.Response.Write(result);
//HttpContext.Current.Response.End();
}
}
catch (Exception ex)
{
return(Request.CreateResponse(HttpStatusCode.InternalServerError, Error.Server));
}
}
/// <summary>
/// 和达第三方登陆
/// </summary>
/// <param name="hdAcc">用户名</param>
/// <param name="hdStamp">时间戳</param>
/// <param name="hdSSOKey">公钥</param>
/// <param name="systemType">登陆类型 1:web 3手机App 4c/s</param>
/// <returns></returns>
public MessageEntity HDLogin(string hdAcc, string hdStamp, string hdSSOKey, int systemType = 1)
{
if (string.IsNullOrEmpty(hdAcc))
{
return(MessageEntityTool.GetMessage(ErrorType.OprationError, "", "用户名不能为空"));
}
if (string.IsNullOrEmpty(hdStamp))
{
return(MessageEntityTool.GetMessage(ErrorType.OprationError, "", "时间戳不能为空"));
}
if (string.IsNullOrEmpty(hdSSOKey))
{
return(MessageEntityTool.GetMessage(ErrorType.OprationError, "", "公钥不能为空"));
}
string hdKey = string.Empty;
try
{
hdKey = Sha1Helper.Encryption(ConfigurationManager.AppSettings["hdSalt"].ToString() + hdAcc + hdStamp);
}
catch (Exception e)
{
return(MessageEntityTool.GetMessage(ErrorType.FieldError, e.Message));
}
if (hdKey.ToLower().Equals(hdSSOKey.Trim().ToString().ToLower()))
{
var admin = base.CommonDAL.GetUserInfoByName(hdAcc, out string errorMsg);
if (admin != null && admin.cAdminName != null)
{
admin.cAdminPassWord = "";
admin.Token = CreateAuthention(admin);
var funcs = base.CommonDAL.GetUserAuthority(admin.iAdminID.ToString(), systemType, out string userAuthorityErrorMsg);
if (funcs != null && funcs.Count() > 0)
{
admin.UserAuthority = funcs;
}
var result = MessageEntityTool.GetMessage(1, admin, true, "登陆成功", 1);
return(result);
}
else if (string.IsNullOrEmpty(errorMsg))
{
return(MessageEntityTool.GetMessage(ErrorType.NoLogin, "", "没有该用户"));
}
else
{
return(MessageEntityTool.GetMessage(ErrorType.SystemError, errorMsg));
}
}
else
{
return(MessageEntityTool.GetMessage(ErrorType.NoAuthority, "", "第三方登陆验证失败"));
}
}
public AuthKey(byte[] data)
{
Guard.That(data.Length, nameof(data)).IsEqual(256);
Data = data;
var hashsum = Sha1Helper.ComputeHashsum(data);
_auxHash = BitConverter.ToUInt64(hashsum, 0);
Id = BitConverter.ToInt64(hashsum, 8 + 4);
}
private static TDhGenOk SerializeResponse(RequestSetClientDHParams setClientDhParams, byte[] newNonce, BigInteger agreement)
{
var newNonceHash = Sha1Helper.ComputeHashsum(newNonce).Skip(4).ToArray();
var authKeyAuxHash = Sha1Helper.ComputeHashsum(agreement.ToByteArrayUnsigned()).Take(8).ToArray();
return(new TDhGenOk
{
Nonce = setClientDhParams.Nonce,
ServerNonce = setClientDhParams.ServerNonce,
NewNonceHash1 = newNonceHash.Concat((byte)1).Concat(authKeyAuxHash).ToArray()
});
}
/// <summary>
/// 验证是否来自微信
/// </summary>
/// <param name="token"></param>
/// <param name="reqModel"></param>
/// <returns></returns>
private bool checkSignature(string token, WechatApiReqModel reqModel)
{
try
{
var signArr = new string[] { token, reqModel.timestamp, reqModel.nonce };
Array.Sort(signArr);
string signature = Sha1Helper.GetSHA1(string.Join("", signArr));
return(signature.Equals(reqModel.signature, StringComparison.CurrentCultureIgnoreCase));
}
catch
{
return(false);
}
}
/// <summary>
/// 文件下载
/// </summary>
/// <param name="fileId">文件id</param>
/// <param name="saveFilePath">本地保存的文件路径</param>
/// <param name="version">下载版本号</param>
/// <param name="checkSha1">是否检查文件sha1值。如果sha1值和服务器不一致，会删除已经下载的文件，返回false</param>
/// <returns>是否成功</returns>
public bool Download(long fileId, string saveFilePath, int version = 0, bool checkSha1 = false)
{
var downloadUrl = GetDownloadUrl(fileId, version);
this._transport.SendDownloadRequest(saveFilePath, new Uri(downloadUrl));
if (checkSha1)
{
var fileInfo = this.Info(fileId);
if (Sha1Helper.ComputeSha1(saveFilePath) != fileInfo.Sha1)
{
File.Delete(saveFilePath);
return(false);
}
}
return(true);
}
private bool CheckSignature(Validation validation)
{
string token = ConfigurationManager.AppSettings["token"].ToString();
string[] arr = { token, validation.Timestamp, validation.Nonce };
Array.Sort(arr);
string result = Sha1Helper.SHA1Encrypt(string.Join("", arr));
if (result == validation.Signature)
{
return(true);
}
else
{
return(false);
}
}
private static TPQInnerData DeserializeRequest(RequestReqDHParams reqDhParams, string privateKey)
{
var encryptedData = reqDhParams.EncryptedDataAsBinary;
var innerDataWithHash = RSAHelper.RsaDecryptWithPrivate(encryptedData, privateKey);
var shaHashsum = innerDataWithHash.Take(20).ToArray();
var innerData = innerDataWithHash.Skip(20).ToArray();
var hashsum = Sha1Helper.ComputeHashsum(innerData);
Guard.That(shaHashsum).IsItemsEquals(hashsum);
var innerDataBuffer = PooledByteBufferAllocator.Default.Buffer(innerData.Length);
innerDataBuffer.WriteBytes(innerData);
return(Serializer.Deserialize(innerDataBuffer).Is <TPQInnerData>());
}
private DecodedLetters DecodeExtractedLetters(IEnumerable <IEnumerable <CsvRow> > lettersCollections, QrReaderData qrData)
{
string currentResult = null;
var isChecksumCorrect = false;
foreach (var letters in lettersCollections)
{
var csvReader = DataOutput.GetCsvParser(letters);
var targetName = "class";
var featureNames = csvReader.EnumerateRows(c => c != targetName).First().ColumnNameToIndex.Keys.ToArray();
var testObservations = csvReader.EnumerateRows(featureNames).ToF64Matrix();
testObservations.Map(p => p / 255);
var model = ClassificationNeuralNetModel.Load(() => new StreamReader("network.xml"));
var predictions = model.Predict(testObservations);
var stringBuilder = new StringBuilder();
foreach (var prediction in predictions)
{
stringBuilder.Append(Math.Abs(prediction - -1) < 0.01 ? '-' : Alphabet.Base32Alphabet.ToString()[(int)prediction]);
}
currentResult = stringBuilder.ToString();
isChecksumCorrect = Sha1Helper.IsChecksumCorrect(currentResult, qrData.MetaData.Checksum);
if (isChecksumCorrect)
{
break;
}
}
return(new DecodedLetters {
Letters = currentResult, IsChecksumOk = isChecksumCorrect
});
}
public void Add(User user)
{
user.Password = Sha1Helper.HashPassword(user.Password + Constants.Salt);
_repository.Add(user);
}
public static RequestReqDHParams GetRequest(TResPQ resPq, string publicKey, out byte[] newNonce)
{
var pq = new BigInteger(resPq.PqAsBinary);
var f1 = PollardRho.Factor(pq);
var f2 = pq.Divide(f1);
var p = f1.Min(f2);
var q = f1.Max(f2);
newNonce = new byte[32];
Random.NextBytes(newNonce);
var pqInnerData = new TPQInnerData
{
PqAsBinary = pq.ToByteArrayUnsigned(),
PAsBinary = p.ToByteArrayUnsigned(),
QAsBinary = q.ToByteArrayUnsigned(),
ServerNonce = resPq.ServerNonce,
Nonce = resPq.Nonce,
NewNonce = newNonce
};
var serializedData = Serializer.Serialize(pqInnerData);
byte[] innerData;
try
{
innerData = serializedData.ToArray();
}
finally
{
serializedData.SafeRelease();
}
var fingerprint = RSAHelper.GetFingerprint(publicKey);
if (!resPq.ServerPublicKeyFingerprints.Contains(fingerprint))
{
throw new InvalidOperationException("The fingerprint is not found");
}
var hashsum = Sha1Helper.ComputeHashsum(innerData);
var dataWithHash = PooledByteBufferAllocator.Default.Buffer();
byte[] innerDataWithHash;
try
{
dataWithHash.WriteBytes(hashsum);
dataWithHash.WriteBytes(innerData);
var paddingBytes = new byte[255 - dataWithHash.ReadableBytes];
Random.NextBytes(paddingBytes);
dataWithHash.WriteBytes(paddingBytes);
innerDataWithHash = dataWithHash.ToArray();
}
finally
{
dataWithHash.SafeRelease();
}
var ciphertext = RSAHelper.RsaEncryptWithPublic(innerDataWithHash, publicKey);
return(new RequestReqDHParams
{
Nonce = resPq.Nonce,
PAsBinary = p.ToByteArrayUnsigned(),
QAsBinary = q.ToByteArrayUnsigned(),
ServerNonce = resPq.ServerNonce,
PublicKeyFingerprint = fingerprint,
EncryptedDataAsBinary = ciphertext
});
}
private string HashWithSalt(string source)
{
return(Sha1Helper.HashPassword(source + Constants.Salt));
}
public static string Sha1(this string valor)
{
return(Sha1Helper.Computar(valor));
}