System.Convert.ToBase64String(byte[], int, int, System.Base64FormattingOptions)

public override string? Readreplacedtring(ISqDataRecordReader recordReader)
        {
            var base64Str = this.ReadNullable(recordReader);
            return base64Str == null ? null : Convert.ToBase64String(base64Str);
        }

public override string? Readreplacedtring(ISqDataRecordReader recordReader)
        {
            var base64Str = this.Read(recordReader);
            return base64Str == null ? null : Convert.ToBase64String(base64Str);
        }

public void VisitPlainProperty(string name, IReadOnlyList<byte>? value, int ctx)
        {

            this._buffer.Add(this._factory(ctx, ctx, null, false, name, value != null ? Convert.ToBase64String(value.ToArray()) : null));
        }

[Fact]
		async public Task AppendAsync()
		{
			var key = "TestAppendAsync_null";
			await rds.SetAsync(key, base.String);
			await rds.AppendAsync(key, base.Null);
			replacedert.Equal(await rds.GetAsync(key), base.String);

			key = "TestAppendAsync_string";
			await rds.SetAsync(key, base.String);
			await rds.AppendAsync(key, base.String);
			replacedert.Equal(await rds.GetAsync(key), base.String + base.String);

			key = "TestAppendAsync_bytes";
			await rds.SetAsync(key, base.Bytes);
			await rds.AppendAsync(key, base.Bytes);
			replacedert.Equal(Convert.ToBase64String(await rds.GetAsync<byte[]>(key)), Convert.ToBase64String(base.Bytes.Concat(base.Bytes).ToArray()));
		}

[Fact]
		public void Append() {
			var key = "TestAppend_null";
			rds.Set(key, base.String);
			rds.Append(key, base.Null);
			replacedert.Equal(rds.Get(key), base.String);

			key = "TestAppend_string";
			rds.Set(key, base.String);
			rds.Append(key, base.String);
			replacedert.Equal(rds.Get(key), base.String + base.String);
			var ms = new MemoryStream();
			rds.Get(key, ms);
			replacedert.Equal(Encoding.UTF8.GetString(ms.ToArray()), base.String + base.String);
			ms.Close();

			key = "TestAppend_bytes";
			rds.Set(key, base.Bytes);
			rds.Append(key, base.Bytes);
			replacedert.Equal(Convert.ToBase64String(rds.Get<byte[]>(key)), Convert.ToBase64String(base.Bytes.Concat(base.Bytes).ToArray()));
		}

[Fact]
        public void Append()
        {
            var key = "TestAppend_null";
            cli.Set(key, String);
            cli.Append(key, Null);
            replacedert.Equal(cli.Get(key), String);

            key = "TestAppend_string";
            cli.Set(key, String);
            cli.Append(key, String);
            replacedert.Equal(cli.Get(key), String + String);
            var ms = new MemoryStream();
            cli.Get(key, ms);
            replacedert.Equal(Encoding.UTF8.GetString(ms.ToArray()), String + String);
            ms.Close();

            key = "TestAppend_bytes";
            cli.Set(key, Bytes);
            cli.Append(key, Bytes);
            replacedert.Equal(Convert.ToBase64String(cli.Get<byte[]>(key)), Convert.ToBase64String(Bytes.Concat(Bytes).ToArray()));
        }

[HttpGet]
        public IActionResult Code()
        {
            var code = CaptchaUtil.GetRandomEnDigitalText();

            var verifyCode = CaptchaUtil.GenerateCaptchaImage(code);

            RedisServer.Cache.Set($"Captcha:{verifyCode.CaptchaGUID}", verifyCode.CaptchaCode, 1800);

            JObject result = new JObject();

            result.Add("captchaCode", $"data:image/png;base64,{Convert.ToBase64String(verifyCode.CaptchaMemoryStream.ToArray())}");
            result.Add("captchaGUID", verifyCode.CaptchaGUID);

            return toResponse(result);
        }

public static void ReHashFiles(List<ModelFileInfo> rep, string folder, List<string> fileNames)
        {
            var dir = rep.ToDictionary(f => f.FileName);
            var computeHash = new FastComputeHash();
            foreach (var fileName in fileNames)
            {
                ModelFileInfo mfi;
                if (!dir.TryGetValue(fileName, out mfi))
                {
                    mfi = new ModelFileInfo()
                    {
                        FileName = fileName,
                    };
                    rep.Add(mfi);
                }
                var file = Path.Combine(folder, fileName);
                var oldHash = mfi.Hash;

                //if (MainHelper.DebugMode)  
                Loger.Log($"ReHashFile b {file} {(oldHash == null ? "" : Convert.ToBase64String(oldHash))}" + $"->{(mfi.Hash == null ? "" : Convert.ToBase64String(mfi.Hash))}");

                GetCheckSum(mfi, file, computeHash);

                //if (MainHelper.DebugMode)  
                Loger.Log($"ReHashFile e {file} {(oldHash == null ? "" : Convert.ToBase64String(oldHash))}" + $"->{(mfi.Hash == null ? "" : Convert.ToBase64String(mfi.Hash))}");
            }
            computeHash.Wait();

            for (int i = 0; i < rep.Count; i++)
            {
                if (rep[i].Hash == null)
                {
                    rep.RemoveAt(i--);
                }
            }
            computeHash.Wait();
        }

[CommandHandler("reportbug", AccessLevel.Player, CommandHandlerFlag.RequiresWorld, 2,
            "Generate a Bug Report",
            "<category> <description>\n" +
            "This command generates a URL for you to copy and paste into your web browser to submit for review by server operators and developers.\n" +
            "Category can be the following:\n" +
            "Creature\n" +
            "NPC\n" +
            "Item\n" +
            "Quest\n" +
            "Recipe\n" +
            "Landblock\n" +
            "Mechanic\n" +
            "Code\n" +
            "Other\n" +
            "For the first three options, the bug report will include identifiers for what you currently have selected/targeted.\n" +
            "After category, please include a brief description of the issue, which you can further detail in the report on the website.\n" +
            "Examples:\n" +
            "/reportbug creature Drudge Prowler is over powered\n" +
            "/reportbug npc Ulgrim doesn't know what to do with Sake\n" +
            "/reportbug quest I can't enter the portal to the Lost City of Frore\n" +
            "/reportbug recipe I cannot combine Bundle of Arrowheads with Bundle of Arrowshafts\n" +
            "/reportbug code I was killed by a Non-Player Killer\n"
            )]
        public static void HandleReportbug(Session session, params string[] parameters)
        {
            if (!PropertyManager.GetBool("reportbug_enabled").Item)
            {
                session.Network.EnqueueSend(new GameMessageSystemChat("The command \"reportbug\" is not currently enabled on this server.", ChatMessageType.Broadcast));
                return;
            }

            var category = parameters[0];
            var description = "";

            for (var i = 1; i < parameters.Length; i++)
                description += parameters[i] + " ";

            description.Trim();

            switch (category.ToLower())
            {
                case "creature":
                case "npc":
                case "quest":
                case "item":
                case "recipe":
                case "landblock":
                case "mechanic":
                case "code":
                case "other":
                    break;
                default:
                    category = "Other";
                    break;
            }

            var sn = ConfigManager.Config.Server.WorldName;
            var c = session.Player.Name;

            var st = "ACE";

            //var versions = ServerBuildInfo.GetVersionInfo();
            var databaseVersion = DatabaseManager.World.GetVersion();
            var sv = ServerBuildInfo.FullVersion;
            var pv = databaseVersion.PatchVersion;

            //var ct = PropertyManager.GetString("reportbug_content_type").Item;
            var cg = category.ToLower();

            var w = "";
            var g = "";

            if (cg == "creature" || cg == "npc"|| cg == "item" || cg == "item")
            {
                var objectId = new ObjectGuid();
                if (session.Player.HealthQueryTarget.HasValue || session.Player.ManaQueryTarget.HasValue || session.Player.CurrentAppraisalTarget.HasValue)
                {
                    if (session.Player.HealthQueryTarget.HasValue)
                        objectId = new ObjectGuid((uint)session.Player.HealthQueryTarget);
                    else if (session.Player.ManaQueryTarget.HasValue)
                        objectId = new ObjectGuid((uint)session.Player.ManaQueryTarget);
                    else
                        objectId = new ObjectGuid((uint)session.Player.CurrentAppraisalTarget);

                    //var wo = session.Player.CurrentLandblock?.GetObject(objectId);

                    var wo = session.Player.FindObject(objectId.Full, Player.SearchLocations.Everywhere);

                    if (wo != null)
                    {
                        w = $"{wo.WeenieClreplacedId}";
                        g = $"0x{wo.Guid:X8}";
                    }
                }
            }

            var l = session.Player.Location.ToLOCString();

            var issue = description;

            var urlbase = $"https://www.accpp.net/bug?";

            var url = urlbase;
            if (sn.Length > 0)
                url += $"sn={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(sn))}";
            if (c.Length > 0)
                url += $"&c={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(c))}";
            if (st.Length > 0)
                url += $"&st={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(st))}";
            if (sv.Length > 0)
                url += $"&sv={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(sv))}";
            if (pv.Length > 0)
                url += $"&pv={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(pv))}";
            //if (ct.Length > 0)
            //    url += $"&ct={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(ct))}";
            if (cg.Length > 0)
            {
                if (cg == "npc")
                    cg = cg.ToUpper();
                else
                    cg = char.ToUpper(cg[0]) + cg.Substring(1);
                url += $"&cg={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(cg))}";
            }
            if (w.Length > 0)
                url += $"&w={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(w))}";
            if (g.Length > 0)
                url += $"&g={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(g))}";
            if (l.Length > 0)
                url += $"&l={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(l))}";
            if (issue.Length > 0)
                url += $"&i={Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(issue))}";

            var msg = "\n\n\n\n";
            msg += "Bug Report - Copy and Paste the following URL into your browser to submit a bug report\n";
            msg += "-=-\n";
            msg += $"{url}\n";
            msg += "-=-\n";
            msg += "\n\n\n\n";

            session.Network.EnqueueSend(new GameMessageSystemChat(msg, ChatMessageType.AdminTell));
        }

private static string? ToBase64EncodedString(byte[]? value)
        {
            if (value == null)
            {
                return null;
            }

            return Convert.ToBase64String(value);
        }

private static string? GetBase64EncodedString(string? value)
        {
            if (value == null)
            {
                return null;
            }

            return Convert.ToBase64String(Encoding.UTF8.GetBytes(value));
        }

private string GetFileName(Stream stream, string format)
        {
            var hasher = MD5.Create();
            var hashBytes = hasher.ComputeHash(stream);
            stream.Position = 0;
            var hash = Convert.ToBase64String(hashBytes)
                .Replace("=", string.Empty)
                .Replace("\\", string.Empty)
                .Replace("/", string.Empty);
            return $"{hash}_temp.{format}";
        }

public virtual void Initialize(IOwinContext context, IDataProtector protector)
		{
			var id = Guid.NewGuid().ToString();
			var token = Convert.ToBase64String(protector.Protect(Encoding.UTF8.GetBytes(id)));

			Id = id;
			Token = token;
		}

public static string GetEnreplacedyName(string enreplacedyLogicalName)
		{
			if (string.IsNullOrEmpty(enreplacedyLogicalName))
			{
				return enreplacedyLogicalName;
			}
			
			return PortalEnreplacedyAllowedList.Contains(enreplacedyLogicalName)
				? enreplacedyLogicalName
				: Convert.ToBase64String(HashPii.ComputeHashPiiSha256(Encoding.UTF8.GetBytes(enreplacedyLogicalName)));
		}

public IAnnotationResult UpdateAnnotation(IAnnotation note, IAnnotationSettings settings = null)
		{
			var serviceContext = _dependencies.GetServiceContext();
			var serviceContextForWrite = _dependencies.GetServiceContextForWrite();

			if (settings == null)
			{
				settings = new AnnotationSettings(serviceContext);
			}
			
			var storageAccount = GetStorageAccount(serviceContext);
			if (settings.StorageLocation == StorageLocation.AzureBlobStorage && storageAccount == null)
			{
				settings.StorageLocation = StorageLocation.CrmDoreplacedent;
			}

			AnnotationUpdateResult result = null;

			if (settings.RespectPermissions)
			{
				var enreplacedyPermissionProvider = new CrmEnreplacedyPermissionProvider();
				result = new AnnotationUpdateResult(note, enreplacedyPermissionProvider, serviceContext);
			}

			var isPostedByCurrentUser = false;
			var noteContact = AnnotationHelper.GetNoteContact(note.Enreplacedy.GetAttributeValue<string>("subject"));
			var currentUser = _dependencies.GetPortalUser();
			if (noteContact != null && currentUser != null && currentUser.LogicalName == "contact" &&
				currentUser.Id == noteContact.Id)
			{
				isPostedByCurrentUser = true;
			}

			// ReSharper disable once PossibleNullReferenceException
			if (!settings.RespectPermissions || (result.PermissionsExist && result.PermissionGranted && isPostedByCurrentUser))
			{
				var enreplacedy = new Enreplacedy("annotation")
				{
					Id = note.AnnotationId
				};

				enreplacedy.SetAttributeValue("notetext", note.NoteText);
				enreplacedy.SetAttributeValue("subject", note.Subject);
				enreplacedy.SetAttributeValue("isdoreplacedent", note.FileAttachment != null);
				
				if (note.FileAttachment != null)
				{
					var accept = GetAcceptRegex(settings.AcceptMimeTypes);
					if (!accept.IsMatch(note.FileAttachment.MimeType))
					{
						throw new AnnotationException(settings.RestrictMimeTypesErrorMessage);
					}

					if (settings.MaxFileSize.HasValue && note.FileAttachment.FileSize > settings.MaxFileSize)
					{
						throw new AnnotationException(settings.MaxFileSizeErrorMessage);
					}

					note.FileAttachment.Annotation = enreplacedy;
					
					switch (settings.StorageLocation)
					{
					case StorageLocation.CrmDoreplacedent:
						var crmFile = note.FileAttachment as CrmAnnotationFile;
						if (crmFile == null || crmFile.Doreplacedent == null || crmFile.Doreplacedent.Length == 0)
						{
							break;
						}

						if (!string.IsNullOrEmpty(settings.RestrictedFileExtensions))
						{
							var blocked = new Regex(@"\.({0})$".FormatWith(settings.RestrictedFileExtensions.Replace(";", "|")));
							if (blocked.IsMatch(crmFile.FileName))
							{
								throw new AnnotationException(settings.RestrictedFileExtensionsErrorMessage);
							}
						}

						enreplacedy.SetAttributeValue("filename", crmFile.FileName);
						enreplacedy.SetAttributeValue("mimetype", crmFile.MimeType);
						enreplacedy.SetAttributeValue("doreplacedentbody", Convert.ToBase64String(crmFile.Doreplacedent));
						break;
					case StorageLocation.AzureBlobStorage:
						enreplacedy.SetAttributeValue("filename", note.FileAttachment.FileName + ".azure.txt");
						enreplacedy.SetAttributeValue("mimetype", "text/plain");
						var fileMetadata = new
						{
							Name = note.FileAttachment.FileName,
							Type = note.FileAttachment.MimeType,
							Size = (ulong)note.FileAttachment.FileSize,
							Url = string.Empty
						};
						enreplacedy.SetAttributeValue("doreplacedentbody",
							Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(fileMetadata, Formatting.Indented))));
						break;
					}
				}

				serviceContextForWrite.Attach(enreplacedy);
				serviceContextForWrite.UpdateObject(enreplacedy);
				serviceContextForWrite.SaveChanges();

				if (note.FileAttachment is AzureAnnotationFile && settings.StorageLocation == StorageLocation.AzureBlobStorage)
				{
					var azureFile = note.FileAttachment as AzureAnnotationFile;

					if (azureFile.GetFileStream() != null)
					{
						var container = GetBlobContainer(storageAccount, _containerName);

						var oldName = note.Enreplacedy.GetAttributeValue<string>("filename");
						var oldBlob = container.GetBlockBlobReference("{0:N}/{1}".FormatWith(enreplacedy.Id.ToString(), oldName));
						oldBlob.DeleteIfExists();

						azureFile.BlockBlob = UploadBlob(azureFile, container, note.AnnotationId);

						var fileMetadata = new
						{
							Name = azureFile.FileName,
							Type = azureFile.MimeType,
							Size = (ulong)azureFile.FileSize,
							Url = azureFile.BlockBlob.Uri.AbsoluteUri
						};
						enreplacedy.SetAttributeValue("doreplacedentbody",
							Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(fileMetadata, Formatting.Indented))));
						serviceContextForWrite.UpdateObject(enreplacedy);
						serviceContextForWrite.SaveChanges();
					}
				}
			}

			if (FeatureCheckHelper.IsFeatureEnabled(FeatureNames.TelemetryFeatureUsage))
			{
				PortalFeatureTrace.TraceInstance.LogFeatureUsage(FeatureTraceCategory.Note, HttpContext.Current, "edit_note", 1, new EnreplacedyReference("annotation", note.AnnotationId), "edit");
			}

			return result;
		}

private void CopyBlob(IAnnotation note, IEnumerable<Tuple<Guid, Guid>> newNoteInfos)
		{
			var azureBlob = note.FileAttachment as AzureAnnotationFile;

			if (azureBlob == null)
			{
				return;
			}

			var fileName = azureBlob.FileName;
			var fromBlob = azureBlob.BlockBlob;
			if (fromBlob.Exists())
			{
				var context = _dependencies.GetServiceContextForWrite();
				foreach (var newNoteInfo in newNoteInfos)
				{
					var newNoteId = newNoteInfo.Item2;

					var storageAccount = GetStorageAccount(context);
					var container = GetBlobContainer(storageAccount, _containerName);
					var toBlob = container.GetBlockBlobReference("{0:N}/{1}".FormatWith(newNoteId.ToString("N"), fileName));
					toBlob.DeleteIfExists();
					toBlob.StartCopy(fromBlob);
					
					var azureFile = note.FileAttachment as AzureAnnotationFile;

					var enreplacedy = new Enreplacedy("annotation")
					{
						Id = newNoteId
					};

					var fileMetadata = new
					{
						Name = azureFile.FileName,
						Type = azureFile.MimeType,
						Size = (ulong)azureFile.FileSize,
						Url = toBlob.Uri.AbsoluteUri
					};
					enreplacedy.SetAttributeValue("doreplacedentbody",
						Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(fileMetadata, Formatting.Indented))));
					context.Attach(enreplacedy);
					context.SaveChanges();
				}
			}
		}

public IAnnotationResult CreateAnnotation(IAnnotation note, IAnnotationSettings settings = null)
		{
			var serviceContext = _dependencies.GetServiceContext();
			var serviceContextForWrite = _dependencies.GetServiceContextForWrite();

			if (settings == null)
			{
				settings = new AnnotationSettings(serviceContext);
			}
			
			var storageAccount = GetStorageAccount(serviceContext);
			if (settings.StorageLocation == StorageLocation.AzureBlobStorage && storageAccount == null)
			{
				settings.StorageLocation = StorageLocation.CrmDoreplacedent;
			}

			AnnotationCreateResult result = null;

			if (settings.RespectPermissions)
			{
				var enreplacedyPermissionProvider = new CrmEnreplacedyPermissionProvider();
				result = new AnnotationCreateResult(enreplacedyPermissionProvider, serviceContext, note.Regarding);
			}

			// ReSharper disable once PossibleNullReferenceException
			if (!settings.RespectPermissions ||
				(result.PermissionsExist && result.PermissionGranted))
			{
				var enreplacedy = new Enreplacedy("annotation");

				if (note.Owner != null)
				{
					enreplacedy.SetAttributeValue("ownerid", note.Owner);
				}

				enreplacedy.SetAttributeValue("subject", note.Subject);
				enreplacedy.SetAttributeValue("notetext", note.NoteText);
				enreplacedy.SetAttributeValue("objectid", note.Regarding);
				enreplacedy.SetAttributeValue("objecttypecode", note.Regarding.LogicalName);

				if (note.FileAttachment != null)
				{
					var acceptMimeTypes = AnnotationDataAdapter.GetAcceptRegex(settings.AcceptMimeTypes);
					var acceptExtensionTypes = AnnotationDataAdapter.GetAcceptRegex(settings.AcceptExtensionTypes);
					if (!(acceptExtensionTypes.IsMatch(Path.GetExtension(note.FileAttachment.FileName).ToLower()) ||
							acceptMimeTypes.IsMatch(note.FileAttachment.MimeType)))
					{
						throw new AnnotationException(settings.RestrictMimeTypesErrorMessage);
					}

					if (settings.MaxFileSize.HasValue && note.FileAttachment.FileSize > settings.MaxFileSize)
					{
						throw new AnnotationException(settings.MaxFileSizeErrorMessage);
					}

					note.FileAttachment.Annotation = enreplacedy;

					switch (settings.StorageLocation)
					{
					case StorageLocation.CrmDoreplacedent:
						var crmFile = note.FileAttachment as CrmAnnotationFile;
						if (crmFile == null)
						{
							break;
						}

						if (!string.IsNullOrEmpty(settings.RestrictedFileExtensions))
						{
							var blocked = new Regex(@"\.({0})$".FormatWith(settings.RestrictedFileExtensions.Replace(";", "|")));
							if (blocked.IsMatch(crmFile.FileName))
							{
								throw new AnnotationException(settings.RestrictedFileExtensionsErrorMessage);
							}
						}

						enreplacedy.SetAttributeValue("filename", crmFile.FileName);
						enreplacedy.SetAttributeValue("mimetype", crmFile.MimeType);
						enreplacedy.SetAttributeValue("doreplacedentbody", Convert.ToBase64String(crmFile.Doreplacedent));
						break;
					case StorageLocation.AzureBlobStorage:
						enreplacedy.SetAttributeValue("filename", note.FileAttachment.FileName + ".azure.txt");
						enreplacedy.SetAttributeValue("mimetype", "text/plain");
						var fileMetadata = new
						{
							Name = note.FileAttachment.FileName,
							Type = note.FileAttachment.MimeType,
							Size = (ulong)note.FileAttachment.FileSize,
							Url = string.Empty
						};
						enreplacedy.SetAttributeValue("doreplacedentbody",
							Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(fileMetadata, Formatting.Indented))));
						break;
					}
				}

				// Create annotaion but skip cache invalidation.
				var id = (serviceContext as IOrganizationService).ExecuteCreate(enreplacedy, RequestFlag.ByPreplacedCacheInvalidation);

				if (result != null) result.Annotation = note;

				note.AnnotationId = enreplacedy.Id = id;
				note.Enreplacedy = enreplacedy;

				if (note.FileAttachment is AzureAnnotationFile && settings.StorageLocation == StorageLocation.AzureBlobStorage)
				{
					var container = GetBlobContainer(storageAccount, _containerName);

					var azureFile = (AzureAnnotationFile)note.FileAttachment;

					azureFile.BlockBlob = UploadBlob(azureFile, container, note.AnnotationId);

					var fileMetadata = new
					{
						Name = azureFile.FileName,
						Type = azureFile.MimeType,
						Size = (ulong)azureFile.FileSize,
						Url = azureFile.BlockBlob.Uri.AbsoluteUri
					};
					enreplacedy.SetAttributeValue("doreplacedentbody",
						Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(fileMetadata, Formatting.Indented))));
					serviceContextForWrite.UpdateObject(enreplacedy);
					serviceContextForWrite.SaveChanges();

					// NB: This is basically a hack to support replication. Keys are gathered up and stored during replication, and the
					// actual blob replication is handled here.
					var key = note.AnnotationId.ToString("N");
					if (HttpContext.Current.Application.AllKeys.Contains(NoteReplication.BlobReplicationKey))
					{
						var replication =
							HttpContext.Current.Application[NoteReplication.BlobReplicationKey] as Dictionary<string, Tuple<Guid, Guid>[]>;
						if (replication != null && replication.ContainsKey(key))
						{
							CopyBlob(note, replication[key]);
							replication.Remove(key);
						}
					}
				} 
			}

			if (FeatureCheckHelper.IsFeatureEnabled(FeatureNames.TelemetryFeatureUsage))
			{
				PortalFeatureTrace.TraceInstance.LogFeatureUsage(FeatureTraceCategory.Note, HttpContext.Current, "create_note", 1, note.Enreplacedy.ToEnreplacedyReference(), "create");
			}

			return result;
		}

public override void Render(Context context, TextWriter result)
		{
			var html = context.Registers["htmlHelper"] as HtmlHelper;

			if (html == null)
			{
				return;
			}

			var source = NodeList.Cast<string>().Aggregate(new StringBuilder(), (sb, token) => sb.Append(token));
			var viewSupportsDonuts = context.ViewSupportsDonuts();

			context.Stack(() =>
			{
				// If donuts are supported then call the LiquidSubsreplacedution action, otherwise render the liquid code directly.
				if (viewSupportsDonuts)
				{
					var encodedSource = Convert.ToBase64String(Encoding.UTF8.GetBytes(source.ToString()));
					result.Write(html.Action("LiquidSubsreplacedution", "Layout", new { encodedSource }, viewSupportsDonuts));
				}
				else
				{
					html.RenderLiquid(source.ToString(), "Subsreplacedution string, but donuts not supported", result);
				}
			});
		}

public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            var json = JsonConvert.SerializeObject(value, Formatting.None,
                            new JsonSerializerSettings
                            {
                                NullValueHandling = NullValueHandling.Ignore
                            });

            writer.WriteValue(Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(json)));
        }

public HttpWebRequest GetHttpWebRequest(string endpoint, Config config, bool isApiKeyRequired, RequestOptions requestOptions = null)
        {
            //Add default headers
            var httpWebRequest = (HttpWebRequest)WebRequest.Create(endpoint);
            httpWebRequest.Method = "POST";
            httpWebRequest.ContentType = "application/json";
            httpWebRequest.Headers.Add("Accept-Charset", "UTF-8");
            httpWebRequest.Headers.Add("Cache-Control", "no-cache");
            httpWebRequest.UserAgent = $"{config.ApplicationName} {ClientConfig.UserAgentSuffix}{ClientConfig.LibVersion}";
            if (!string.IsNullOrWhiteSpace(requestOptions?.IdempotencyKey))
            {
                httpWebRequest.Headers.Add("Idempotency-Key", requestOptions?.IdempotencyKey);
            }
            //Use one of two authentication method.
            if (isApiKeyRequired || !string.IsNullOrEmpty(config.XApiKey))
            {
                httpWebRequest.Headers.Add("x-api-key", config.XApiKey);
            }
            else if (!string.IsNullOrEmpty(config.Preplacedword))
            {
                var authString = config.Username + ":" + config.Preplacedword;
                var bytes = Encoding.UTF8.GetBytes(authString);
                var credentials = Convert.ToBase64String(bytes);
                httpWebRequest.Headers.Add("Authorization", "Basic " + credentials);
                httpWebRequest.UseDefaultCredentials = true;
            }
            if (config.Proxy != null)
            {
                httpWebRequest.Proxy = config.Proxy;
            }
            httpWebRequest.ServerCertificateValidationCallback = ServerCertificateValidationCallback;
            return httpWebRequest;
        }

public SaleToPoiMessageSecured Encrypt(string saleToPoiMessage, MessageHeader messageHeader,
                                                 EncryptionCredentialDetails encryptionCredentialDetails)
        {
            var encryptionDerivedKey = _encryptionDerivedKeyGenerator.Generate(encryptionCredentialDetails);
            var saleToPoiMessageJson = saleToPoiMessage;
            var saleToPoiMessageByteArray = Encoding.UTF8.GetBytes(saleToPoiMessageJson);
            var ivMod = _ivModGenerator.GenerateRandomMod();
            var saleToPoiMessageAesEncrypted = _aesEncryptor.Encrypt(saleToPoiMessageByteArray,
                                                                     encryptionDerivedKey,
                                                                     ivMod);
            var saleToPoiMessageAesEncryptedHmac = _hmacSha256Wrapper.HMac(saleToPoiMessageByteArray,
                                                                           encryptionDerivedKey.HmacKey);


            var saleToPoiMessageSecured = new SaleToPoiRequestSecured
            {
                MessageHeader = messageHeader,
                NexoBlob = Convert.ToBase64String(saleToPoiMessageAesEncrypted),
                SecurityTrailer = new SecurityTrailer
                {
                    KeyVersion = encryptionCredentialDetails.KeyVersion,
                    KeyIdentifier = encryptionCredentialDetails.KeyIdentifier,
                    Hmac = saleToPoiMessageAesEncryptedHmac,
                    Nonce = ivMod,
                    AdyenCryptoVersion = encryptionCredentialDetails.AdyenCryptoVersion
                }
            };

            return saleToPoiMessageSecured;
        }

public static IFlurlRequest WithSignParam(this IFlurlRequest request, string action, string bizType, string domain, string version = "default")
        {
            var requestInfo = JsonConvert.SerializeObject(new RequestInfoParam
            {
                ac = action,
                bz = bizType,
                dm = domain,
                ver = "default"
            });

            var requestInfoEncoded = Convert.ToBase64String(Encoding.UTF8.GetBytes(requestInfo));

            return request.SetQueryParam("___d", requestInfoEncoded);
        }

public static IFlurlRequest WithSignHeaders(this IFlurlRequest request, MusicallyClient api)
        {
            var requestId = Guid.NewGuid().ToString();
            var requestInfo = JsonConvert.SerializeObject(new RequestInfo
            {
                Os = "android 8.0.0",
                Version = "6.9.0",
                SliderShowCookie = string.Empty,
                XRequestId = requestId,
                Url = request.Url.ToString(),
                OsType = "android",
                DeviceId = api.Cache.Device.DeviceId,
                Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()
            });

            var requestInfoEncoded = Convert.ToBase64String(Encoding.UTF8.GetBytes(requestInfo));
            var requestSignature = api.ApiSignature.GetSignature(requestInfoEncoded, api.Cache.Device.DeviceId).GetAwaiter().GetResult();

            return request
                .WithHeader("X-Request-ID", requestId)
                .WithHeader("X-Request-Info5", requestInfoEncoded)
                .WithHeader("X-Request-Sign5", requestSignature.Sign);
        }

private async Task<EncryptedXmlInfo> EncryptAsync(XElement plaintextElement)
        {
            byte[] value;
            using (var memoryStream = new MemoryStream())
            {
                plaintextElement.Save(memoryStream, SaveOptions.DisableFormatting);
                value = memoryStream.ToArray();
            }

            using var symmetricAlgorithm = DefaultSymmetricAlgorithmFactory();
            var symmetricBlockSize = symmetricAlgorithm.BlockSize / 8;
            var symmetricKey = new byte[symmetricBlockSize];
            var symmetricIV = new byte[symmetricBlockSize];
            _randomNumberGenerator.GetBytes(symmetricKey);
            _randomNumberGenerator.GetBytes(symmetricIV);

            byte[] encryptedValue;
            using (var encryptor = symmetricAlgorithm.CreateEncryptor(symmetricKey, symmetricIV))
            {
                encryptedValue = encryptor.TransformFinalBlock(value, 0, value.Length);
            }

            var wrappedKey = await _client.WrapKeyAsync(_keyId, DefaultKeyEncryption, symmetricKey).ConfigureAwait(false);

            var element = new XElement("encryptedKey",
                new XComment(" This key is encrypted with Azure KeyVault. "),
                new XElement("kid", wrappedKey.Kid),
                new XElement("key", Convert.ToBase64String(wrappedKey.Result)),
                new XElement("iv", Convert.ToBase64String(symmetricIV)),
                new XElement("value", Convert.ToBase64String(encryptedValue)));

            return new EncryptedXmlInfo(element, typeof(AzureKeyVaultXmlDecryptor));

        }

private static string EncryptString(string source, BigInteger d, BigInteger n)
		{
			int len = source.Length;
			int len1 = 0;
			int blockLen = 0;
			if ((len % 128) == 0)
				len1 = len / 128;
			else
				len1 = len / 128 + 1;
			
			string block = "";
			List<string> vals = new List<string>();
			for (int i = 0; i < len1; i++)
			{
				if (len >= 128)
					blockLen = 128;
				else
					blockLen = len;
				block = source.Substring(i * 128, blockLen);
				byte[] oText = System.Text.Encoding.Default.GetBytes(block);
				BigInteger biText = new BigInteger(oText);
				BigInteger biEnText = biText.modPow(d, n);
				vals.Add(Convert.ToBase64String(biEnText.getBytes()));
				len -= blockLen;
			}
			return string.Join("@", vals.ToArray());
		}

public static bool CheckIn()
        {
            try
            {
#if DEFAULT_EKE
                Crypto.GenRsaKeys();
                Utils.GetStage GetStage = new Utils.GetStage
                {
                    action = "staging_rsa",
                    pub_key = Crypto.GetPubKey(),
                    session_id = Utils.GetSessionId()

                };
                Config.SessionId = GetStage.session_id;
                string SerializedData = Crypto.EncryptStage(Utils.GetStage.ToJson(GetStage));
                var result = Get(SerializedData);
                string final_result = Crypto.Decrypt(result);
                Utils.StageResponse StageResponse = Utils.StageResponse.FromJson(final_result);
                Config.tempUUID = StageResponse.uuid;
                Config.Psk = Convert.ToBase64String(Crypto.RsaDecrypt(Convert.FromBase64String(StageResponse.session_key)));
#endif
                Utils.CheckIn CheckIn = new Utils.CheckIn
                {
                    action = "checkin",
                    ip = Utils.GetIPAddress(),
                    os = Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "ProductName", "").ToString() + " " + Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "ReleaseId", ""),
                    user = Environment.UserName.ToString(),
                    host = Environment.MachineName.ToString(),
                    domain = Environment.UserDomainName.ToString(),
                    pid = Process.GetCurrentProcess().Id,
                    uuid = Config.PayloadUUID,
                    architecture = Utils.GetArch()
                };
#if DEFAULT
                string FinalSerializedData = Convert.ToBase64String(Encoding.UTF8.GetBytes(Config.PayloadUUID + Utils.CheckIn.ToJson(CheckIn)));
#elif (DEFAULT_PSK || DEFAULT_EKE)
                string FinalSerializedData = Crypto.EncryptCheckin(Utils.CheckIn.ToJson(CheckIn));
#endif
                var new_result = Get(FinalSerializedData);
#if (DEFAULT_PSK || DEFAULT_EKE)
                string last_result = Crypto.Decrypt(new_result);
#endif
#if DEFAULT
                Utils.CheckInResponse CheckInResponse = Utils.CheckInResponse.FromJson(new_result);
#elif (DEFAULT_PSK || DEFAULT_EKE)
                Utils.CheckInResponse CheckInResponse = Utils.CheckInResponse.FromJson(last_result);
#endif
                Config.UUID = CheckInResponse.id;
                if (CheckInResponse.status == "success")
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch
            {
                return false;
            }
        }

private Uri BuildUriBase64(BlobInfo blobInfo, string label, int? width = null, int? height = null, string bgColor = null, string fgColor = null)
		{
			var dynamicTextImage = new DynamicTextImage(
				width ?? 500,
				height ?? 500,
				bgColor ?? _configs.DefaultThumbBackgroundHexColor,
				fgColor ?? _configs.DefaultThumbForegroundHexColor
			);

			using (var imageStream = dynamicTextImage.Build(label))
			{
				var encodedData = Convert.ToBase64String(imageStream.ToArray());
				var embeddedUri = $"data:{blobInfo.ContentType};base64,{encodedData}";
				return new Uri(embeddedUri, UriKind.Absolute);
			}
		}

public Argon2idHashResult ComputeHash(byte[] stringToComputeHashBytes, int iterations, int kBmemorySize, int degreeOfParallelism, int amountBytesToReturn,
            byte[] salt = null, byte[] replacedociatedData = null, byte[] knownSecret = null)
        {
            try
            {
                salt = salt ?? CommonMethods.GenerateSalt(); // generate a 128 bits salt, if not provided
                degreeOfParallelism = (degreeOfParallelism <= 0 ? Environment.ProcessorCount : degreeOfParallelism);

                using (var argon2id = new Konscious.Security.Cryptography.Argon2id(stringToComputeHashBytes)
                {
                    Salt = salt,
                    DegreeOfParallelism = degreeOfParallelism,
                    Iterations = iterations,
                    MemorySize = kBmemorySize,
                    replacedociatedData = replacedociatedData,
                    KnownSecret = knownSecret
                })
                {
                    var hashBytes = argon2id.GetBytes(amountBytesToReturn);

                    return new Argon2idHashResult()
                    {
                        Success = true,
                        HashBytes = hashBytes,
                        HashString = Convert.ToBase64String(hashBytes),
                        Message = MessageStrings.Hash_ComputeSuccess,
                        SaltBytes = salt,
                        Iterations = iterations,
                        DegreeOfParallelism = degreeOfParallelism,
                        KBMemorySize = kBmemorySize,
                        replacedociatedData = replacedociatedData,
                        KnownSecret = knownSecret
                    };
                }
            }
            catch (Exception ex)
            {
                return new Argon2idHashResult()
                {
                    Success = false,
                    Message = ex.ToString()
                };
            }
        }

private void WriteBytes(byte[] bytes)
        {
#if !SILVERLIGHT
            WriteStringFast(Convert.ToBase64String(bytes, 0, bytes.Length, Base64FormattingOptions.None));
#else
            WriteStringFast(Convert.ToBase64String(bytes, 0, bytes.Length));
#endif
        }

public static async void CreateAccount(Account account, SolanaRpcClient rpcClient, string toPublicKey = "", long ammount = 1000)
        {
            Keypair k = WalletKeyPair.GenerateKeyPairFromMnemonic(WalletKeyPair.GenerateNewMnemonic());
            toPublicKey = k.publicKey;

            RequestResult<ResponseValue<BlockHash>> blockHash = await rpcClient.GetRecentBlockHashAsync();

            var tx = new TransactionBuilder().SetRecentBlockHash(blockHash.Result.Value.Blockhash).
                AddInstruction(SystemProgram.CreateAccount(account.GetPublicKey, toPublicKey, ammount, (long)SystemProgram.AccountDataSize, SystemProgram.ProgramId)).Build(new List<Account>() { account, new Account(k.privateKeyByte, k.publicKeyByte) });

            RequestResult<string> firstSig = await rpcClient.SendTransactionAsync(Convert.ToBase64String(tx));
        }

public async void CreateAccount(Account account, string toPublicKey = "", long ammount = 1000)
        {
            Keypair keypair = WalletKeyPair.GenerateKeyPairFromMnemonic(WalletKeyPair.GenerateNewMnemonic());

            toPublicKey = keypair.publicKey;

            RequestResult<ResponseValue<BlockHash>> blockHash = await activeRpcClient.GetRecentBlockHashAsync();

            var transaction = new TransactionBuilder().SetRecentBlockHash(blockHash.Result.Value.Blockhash).
                AddInstruction(SystemProgram.CreateAccount(account.GetPublicKey, toPublicKey, ammount,
                (long)SystemProgram.AccountDataSize, SystemProgram.ProgramId))
                .Build(new List<Account>() {
                    account,
                    new Account(keypair.privateKeyByte, keypair.publicKeyByte)
                });

            RequestResult<string> firstSig = await activeRpcClient.SendTransactionAsync(Convert.ToBase64String(transaction));
        }

public async void TransferSol(Account fromAccount, string toPublicKey, long ammount = 10000000)
        {
            RequestResult<ResponseValue<BlockHash>> blockHash = await activeRpcClient.GetRecentBlockHashAsync();

            var transaction = new TransactionBuilder().SetRecentBlockHash(blockHash.Result.Value.Blockhash).
                AddInstruction(SystemProgram.Transfer(fromAccount.GetPublicKey, toPublicKey, ammount)).Build(fromAccount);

            RequestResult<string> firstSig = await activeRpcClient.SendTransactionAsync(Convert.ToBase64String(transaction));
        }

public async Task<RequestResult<string>> TransferSol(string toPublicKey, long ammount = 10000000)
        {
            RequestResult<ResponseValue<BlockHash>> blockHash = await activeRpcClient.GetRecentBlockHashAsync();
            Account fromAccount = wallet.GetAccount(0);

            var transaction = new TransactionBuilder().SetRecentBlockHash(blockHash.Result.Value.Blockhash).
                AddInstruction(SystemProgram.Transfer(fromAccount.GetPublicKey, toPublicKey, ammount)).Build(fromAccount);

            return await activeRpcClient.SendTransactionAsync(Convert.ToBase64String(transaction));
        }

private static void ToJsonCore(ref MessagePackReader reader, TextWriter writer, MessagePackSerializerOptions options)
        {
            MessagePackType type = reader.NextMessagePackType;
            switch (type)
            {
                case MessagePackType.Integer:
                    if (MessagePackCode.IsSignedInteger(reader.NextCode))
                    {
                        writer.Write(reader.ReadInt64().ToString(CultureInfo.InvariantCulture));
                    }
                    else
                    {
                        writer.Write(reader.ReadUInt64().ToString(CultureInfo.InvariantCulture));
                    }

                    break;
                case MessagePackType.Boolean:
                    writer.Write(reader.ReadBoolean() ? "true" : "false");
                    break;
                case MessagePackType.Float:
                    if (reader.NextCode == MessagePackCode.Float32)
                    {
                        writer.Write(reader.ReadSingle().ToString(CultureInfo.InvariantCulture));
                    }
                    else
                    {
                        writer.Write(reader.ReadDouble().ToString(CultureInfo.InvariantCulture));
                    }

                    break;
                case MessagePackType.String:
                    WriteJsonString(reader.ReadString(), writer);
                    break;
                case MessagePackType.Binary:
                    ArraySegment<byte> segment = ByteArraySegmentFormatter.Instance.Deserialize(ref reader, DefaultOptions);
                    writer.Write("\"" + Convert.ToBase64String(segment.Array, segment.Offset, segment.Count) + "\"");
                    break;
                case MessagePackType.Array:
                    {
                        int length = reader.ReadArrayHeader();
                        options.Security.DepthStep(ref reader);
                        try
                        {
                            writer.Write("[");
                            for (int i = 0; i < length; i++)
                            {
                                ToJsonCore(ref reader, writer, options);

                                if (i != length - 1)
                                {
                                    writer.Write(",");
                                }
                            }

                            writer.Write("]");
                        }
                        finally
                        {
                            reader.Depth--;
                        }

                        return;
                    }

                case MessagePackType.Map:
                    {
                        int length = reader.ReadMapHeader();
                        options.Security.DepthStep(ref reader);
                        try
                        {
                            writer.Write("{");
                            for (int i = 0; i < length; i++)
                            {
                                // write key
                                {
                                    MessagePackType keyType = reader.NextMessagePackType;
                                    if (keyType == MessagePackType.String || keyType == MessagePackType.Binary)
                                    {
                                        ToJsonCore(ref reader, writer, options);
                                    }
                                    else
                                    {
                                        writer.Write("\"");
                                        ToJsonCore(ref reader, writer, options);
                                        writer.Write("\"");
                                    }
                                }

                                writer.Write(":");

                                // write body
                                {
                                    ToJsonCore(ref reader, writer, options);
                                }

                                if (i != length - 1)
                                {
                                    writer.Write(",");
                                }
                            }

                            writer.Write("}");
                        }
                        finally
                        {
                            reader.Depth--;
                        }

                        return;
                    }

                case MessagePackType.Extension:
                    ExtensionHeader extHeader = reader.ReadExtensionFormatHeader();
                    if (extHeader.TypeCode == ReservedMessagePackExtensionTypeCode.DateTime)
                    {
                        DateTime dt = reader.ReadDateTime(extHeader);
                        writer.Write("\"");
                        writer.Write(dt.ToString("o", CultureInfo.InvariantCulture));
                        writer.Write("\"");
                    }
#if !UNITY_2018_3_OR_NEWER
                    else if (extHeader.TypeCode == ThisLibraryExtensionTypeCodes.TypelessFormatter)
                    {
                        // prepare type name token
                        var privateBuilder = new StringBuilder();
                        var typeNameTokenBuilder = new StringBuilder();
                        SequencePosition positionBeforeTypeNameRead = reader.Position;
                        ToJsonCore(ref reader, new StringWriter(typeNameTokenBuilder), options);
                        int typeNameReadSize = (int)reader.Sequence.Slice(positionBeforeTypeNameRead, reader.Position).Length;
                        if (extHeader.Length > typeNameReadSize)
                        {
                            // object map or array
                            MessagePackType typeInside = reader.NextMessagePackType;
                            if (typeInside != MessagePackType.Array && typeInside != MessagePackType.Map)
                            {
                                privateBuilder.Append("{");
                            }

                            ToJsonCore(ref reader, new StringWriter(privateBuilder), options);

                            // insert type name token to start of object map or array
                            if (typeInside != MessagePackType.Array)
                            {
                                typeNameTokenBuilder.Insert(0, "\"$type\":");
                            }

                            if (typeInside != MessagePackType.Array && typeInside != MessagePackType.Map)
                            {
                                privateBuilder.Append("}");
                            }

                            if (privateBuilder.Length > 2)
                            {
                                typeNameTokenBuilder.Append(",");
                            }

                            privateBuilder.Insert(1, typeNameTokenBuilder.ToString());

                            writer.Write(privateBuilder.ToString());
                        }
                        else
                        {
                            writer.Write("{\"$type\":\"" + typeNameTokenBuilder.ToString() + "}");
                        }
                    }
#endif
                    else
                    {
                        var data = reader.ReadRaw((long)extHeader.Length);
                        writer.Write("[");
                        writer.Write(extHeader.TypeCode);
                        writer.Write(",");
                        writer.Write("\"");
                        writer.Write(Convert.ToBase64String(data.ToArray()));
                        writer.Write("\"");
                        writer.Write("]");
                    }

                    break;
                case MessagePackType.Nil:
                    reader.Skip();
                    writer.Write("null");
                    break;
                default:
                    throw new MessagePackSerializationException($"code is invalid. code: {reader.NextCode} format: {MessagePackCode.ToFormatName(reader.NextCode)}");
            }
        }

private string DumpStoreContentsAsPEMBundle(StoreName name)
        {
            X509Store store = new X509Store(name, StoreLocation.LocalMachine);
            store.Open(OpenFlags.ReadOnly);
            var chain = "";
            X509Certificate2Collection certsW = store.Certificates.Find(X509FindType.FindByKeyUsage, X509KeyUsageFlags.KeyCertSign, true);

            foreach (X509Certificate2 certW in certsW)
            {
                StringBuilder builder = new StringBuilder();
                builder.AppendLine("-----BEGIN CERTIFICATE-----");
                builder.AppendLine(Convert.ToBase64String(certW.Export(X509ContentType.Cert), Base64FormattingOptions.InsertLineBreaks));
                builder.AppendLine("-----END CERTIFICATE-----");
                chain += builder.ToString();
            }
            store.Close();

            return chain;
        }

public static string ToBase64String([NotNull] this byte[] inArray, int offset, int length, Base64FormattingOptions options)
        {
            return Convert.ToBase64String(inArray, offset, length, options);
        }

public async Task<string> CreateAfCodeAsync(string url, AfCodeType codeType)
        {
            var bk = await _bkRepository.GetAsync(url);
            if (bk == null)
            {
                return string.Empty;
            }

            var code = new AfCode
            {
                replacedle = bk.replacedle,
                Url = bk.Url,
                Tags = bk.Tags?.ToArray() ?? Array.Empty<string>(),
            };
            switch (codeType)
            {
                case AfCodeType.JsonBase64:
                    {
                        var json = JsonSerializer.Serialize(code);
                        var base64String = Convert.ToBase64String(Encoding.UTF8.GetBytes(json));
                        return CreateCode(base64String);
                    }
                case AfCodeType.CompressionJsonBase64:
                    {
                        var json = JsonSerializer.Serialize(code);
                        var input = Encoding.UTF8.GetBytes(json).AsMemory();
                        var readOnlyMemory = Compress(input);
                        var base64String = Convert.ToBase64String(readOnlyMemory.Span);
                        return CreateCode(base64String);
                    }
                case AfCodeType.Cloud:
                    throw new NotImplementedException();
                case AfCodeType.PlainText:
                    {
                        var json = JsonSerializer.Serialize(code);
                        return CreateCode(json);
                    }
                default:
                    throw new ArgumentOutOfRangeException(nameof(codeType), codeType, null);
            }

            string CreateCode(string payload)
            {
                return $"{Consts.AfCodeSchemaPrefix}{codeType:D}{payload}";
            }
        }

public static string GenerateHash(string value, string salt, int iterationCount = 10000, ushort bits = 256)
        {
            if (iterationCount < 10000)
            {
                throw new ArgumentOutOfRangeException("Iteration count must be at least 10000");
            }

            ValidateBits(bits, 256);

            return Convert.ToBase64String(KeyDerivation.Pbkdf2(
                iterationCount: iterationCount,
                numBytesRequested: bits / 8,
                preplacedword: value,
                prf: KeyDerivationPrf.HMACSHA1,
                salt: Convert.FromBase64String(salt)
            ));
        }

private string CreateJwtToken()
        {
            var header = JsonHelper.Serialize(new { alg = "ES256", kid = CleanP8Key(settings.P8PrivateKeyId) });
            var payload = JsonHelper.Serialize(new { iss = settings.TeamId, iat = ToEpoch(DateTime.UtcNow) });
            var headerBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(header));
            var payloadBasae64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(payload));
            var unsignedJwtData = $"{headerBase64}.{payloadBasae64}";
            var unsignedJwtBytes = Encoding.UTF8.GetBytes(unsignedJwtData);

            using (var dsa = AppleCryptoHelper.GetEllipticCurveAlgorithm(CleanP8Key(settings.P8PrivateKey)))
            {
                var signature = dsa.SignData(unsignedJwtBytes, 0, unsignedJwtBytes.Length, HashAlgorithmName.SHA256);
                return $"{unsignedJwtData}.{Convert.ToBase64String(signature)}";
            }
        }

public static string SpriteToBase64(Sprite input)
        {
            return Convert.ToBase64String(input.texture.EncodeToPNG());
        }

public static string SpriteToBase64(Sprite input)
        {
            return Convert.ToBase64String(input.texture.EncodeToJPG());
        }

public static string Texture2DToBase64(Texture2D tex)
        {
            return Convert.ToBase64String(tex.EncodeToJPG());
        }

public static string RSAPrivateKeyJavaToDotNet(string privateKey)
        {
            RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey));

            return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent><P>{2}</P><Q>{3}</Q><DP>{4}</DP><DQ>{5}</DQ><InverseQ>{6}</InverseQ><D>{7}</D></RSAKeyValue>",
                Convert.ToBase64String(privateKeyParam.Modulus.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()),
                Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned()));

        }

public static string RSAPublicKeyJavaToDotNet(string publicKey)
        {
            RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey));
            return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent></RSAKeyValue>",
                Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()),
                Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned()));
        }

protected async Task ViewImage(InputFileChangeEventArgs e)
        {
            if (e.File.Size > MaxFileSize)
            {
                status = $"The file size is {e.File.Size} bytes, this is more than the allowed limit of {MaxFileSize} bytes.";
                return;
            }
            else if (!e.File.ContentType.Contains("image"))
            {
                status = "Please uplaod a valid image file";
                return;
            }
            else
            {
                using var reader = new StreamReader(e.File.OpenReadStream(MaxFileSize));
                var format = "image/jpeg";
                var imageFile = await e.File.RequestImageFileAsync(format, 640, 480);

                using var fileStream = imageFile.OpenReadStream(MaxFileSize);
                using var memoryStream = new MemoryStream();
                await fileStream.CopyToAsync(memoryStream);
                imageFileBytes = memoryStream.ToArray();
                imagePreview = string.Concat("data:image/png;base64,", Convert.ToBase64String(memoryStream.ToArray()));

                status = DefaultStatus;
            }
        }

public string ToBase64()
        {
            return Convert.ToBase64String(_buffer.Span, Base64FormattingOptions.None);
        }

public static void SetKey(this Metadata metadata, byte[]? key)
    {
        if (key is null)
            return;

        metadata.ParreplacedionKey = Convert.ToBase64String(key);
        metadata.ParreplacedionKeyB64Encoded = true;
    }

public static void AddUserClaimsHeader(this HttpClient client, HttpContext context)
        {
            if (!context.User.Idenreplacedy.IsAuthenticated)
                throw new InvalidOperationException("user do not Authenticated!");

            var claimsDic = new Dictionary<string, string>();
            foreach (var userClaim in context.User.Claims)
            {
                if (!claimsDic.ContainsKey(userClaim.Type))
                    claimsDic.Add(userClaim.Type, userClaim.Value);
            }
            var claimsString = JsonConvert.SerializeObject(claimsDic);
            var claimsBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(claimsString));
            if (client.DefaultRequestHeaders.Contains(UserClaimsHeaderName))
                client.DefaultRequestHeaders.Remove(UserClaimsHeaderName);
            client.DefaultRequestHeaders.Add(UserClaimsHeaderName, claimsBase64);
        }

public bool Input(Iq stanza) {
			if (stanza.Type != IqType.Get)
				return false;
			var e = stanza.Data["data"];
			if (e == null || e.NamespaceURI != "urn:xmpp:bob")
				return false;
			string cid = e.GetAttribute("cid");
			if (cache.ContainsKey(cid)) {
				BobData b = cache[cid];
				var data = Xml.Element("data", "urn:xmpp:bob").Attr("cid", cid)
					.Attr("type", b.Type)
					.Text(Convert.ToBase64String(b.Data));
				im.IqResult(stanza, data);
			} else {
				// If we don't have the item, return an 'item not found' error.
				im.IqError(stanza, ErrorType.Cancel, ErrorCondition.ItemNotFound);
			}
			// We took care of this IQ request, so intercept it and don't preplaced it
			// on to other handlers.
			return true;
		}

private static Attachment GetInlineAttachment()
        {
            var imagePath = Path.Combine(Environment.CurrentDirectory, @"replacedets\food-track.PNG");
            var imageData = Convert.ToBase64String(File.ReadAllBytes(imagePath));

            return new Attachment
            {
                Name = @"replacedets\food-track.PNG",
                ContentType = "image/png",
                ContentUrl = $"data:image/png;base64,{imageData}",
            };
        }