I'm trying to learn simple cryptology and as a starter I'm trying to achieve the following.
A function, taking two 128 bit params (key and plaintext) as input and returning their XOR. I know XOR is not safe but I'm starting out with a simple example.
For example, AES has 3 choices: 128-bit, 192-bit, // or 256-bit. In the ChaCha20 algorithm, the key size must always be 256-bits (32-bytes). // Both sides (encryptor and decryptor) must be in possession of the same secret key // in order to communicate. Whichever side generates the key, it must somehow // deliver the key to the other side.
This is what I have tried:
Download creative suite 6 free mac. Encrypter.cs :
May 28, 2012 Find answers to Generating AES-256 bits encryption key in C#?? From the expert community at Experts Exchange. I want to generate AES encryption key to be sent to the the other party in order to communicate securely. M received a Solution What is the best way to convert an SSD encrypted with 128 AES, to 256 AES encryption using Microsoft. CodeIgniter Encryption Keys - Can be used for any other 256-bit key. 128-bit WEP Keys. 152-bit WEP Keys. 256-bit WEP Keys. About RandomKeygen. Our free mobile-friendly tool offers a variety of randomly generated keys and passwords you can use to secure any application, service or device. Simply click to copy a password or press the 'Generate.
My problem:
I'm struggling with what to put as the key and plaintext. Renault megane wiring diagrams download. How can I ensure that the values are exactly 128 bit each?
E.g.
B25829846AED8 is apparently a 128 bit WEP key. If I assign this to my key variable and when I enter the encrypt method the keyBits.Length property has the value 208. This is what I don't get. Also the parameter key has the length 26, which I'm also confused by.
Why is the key-length 26?
C#-strings is in unicode, so you can write all characters out there eg. Chinese, Japanese, etc. etc. That takes two bytes. 13*2=26.
Is your wep-key 128 bits You've got a key for 128 bit wep-protocoll which is using 104 bit keys. (fun times) Wiki on Wep
But as far as I understand you're not trying to implement wep, you're trying to encode something. Take two random integers translate them to bytes and put them after each other. BAM- 128 bits :)
Other than that you seam to have it under control, good luck :)
Unconstrained type parameters casting
c#,.net,types,casting
The compiler sees the T2 and T identifiers and helpfully informs you that those types seem unrelated. That's absolutely correct, as they have no relation: there are no generic constraints that would assert any relations between them (I'm not saying that would be useful here though :) ). Whether this.
Validate a field only if it is populated
c#,wpf,idataerrorinfo
You can implement your OptionalPhoneAttribute based on the original PhoneAttribute: public sealed class OptionalPhoneAttribute : ValidationAttribute { public override bool IsValid(object value) { var phone = new PhoneAttribute(); //return true when the value is null or empty //return original IsValid value only when value is not null or empty return.
Access manager information from Active Directory
c#,asp.net,active-directory
try this: var loginName = @'loginNameOfInterestedUser'; var ldap = new DirectoryEntry('LDAP://domain.something.com'); var search = new DirectorySearcher(ldap) { Filter = '(&(objectCategory=person)(objectClass=user)(sAMAccountName=' + loginName + '))' }; var result = search.FindOne(); if (result null) return; var fullQuery = result.Path; var user = new DirectoryEntry(fullQuery); DirectoryEntry manager; if (user.Properties.PropertyNames.OfType<string>().Contains('manager')) { var managerPath.
Is it possible to concactenate a DataBound value with a constant string in XAML DataBinding?
c#,xaml,windows-phone
You can use a StringFormat in your binding, like so: <TextBox Text='{Binding ItemName, StringFormat={}Item: {0}}'/> That being said, it may cause some unexpected behavior when editing. For example, if the user edits only the item name (excluding the 'Item:' text), then when the TextBox loses focus, the string format will.
How to declare var datatype in public scope in c#?
c#,linq
Declare it as a known type (not an anonymous type), like this for example: Dictionary<int, string> results = new Dictionary<int, string>(); Then you could store the results in the Dictionary: results = behzad.GAPERTitles.ToDictionary(x => x.id, x => x.gaptitle); And reference it later: private void button1_Click(object sender, EventArgs e) { //.
How do I provide a collection of elements to a custom attached property?
c#,wpf,binding
I managed to get it working using an IMultiValueConverter like this: public class BorderCollectionConverter : IMultiValueConverter { public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture) { var borderCollection = new BorderCollection(); borderCollection.AddRange(values.OfType<Border>()); return borderCollection; } public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture) { throw new.
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c#,winforms
You have to decide: Either maximize the form (which always makes sure the TaskBar is still visible) or set the dimensions manually. I suggest you remove the WindowState line. Another failsafe way would be to hide the TaskBar from your code, for example as described here.
C# XML: System.InvalidOperationException
c#,xml
Is 'User Info' and 'Course Data' is a different entity. If it is so, I think you may encapsulate them in one entity. XmlTextWriter writer = new XmlTextWriter(path, System.Text.Encoding.UTF8); writer.WriteStartDocument(true); writer.Formatting = Formatting.Indented; writer.Indentation = 4; writer.WriteStartElement('My Entity'); /* It is a biggest one*/ writer.WriteStartElement('User Info'); writer.WriteStartElement('Name'); writer.WriteString(userName); writer.WriteEndElement(); writer.WriteStartElement('Tutor.
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c#,asp.net,nancy
The module- and application pipelines are explained in detail in the wiki. It's basically hooks which are executed before and after route execution on a global (application pipelines) and per-module basis. Here's an example: If a route is resolved to a module called FooModule, the pipelines will be invoked as.
Multiple Threads searching on same folder at same time
c#,multithreading,file-search
Instead of using ordinary foreach statement in doing your search, you should use parallel linq. Parallel linq combines the simplicity and readability of LINQ syntax with the power of parallel programming. Just like code that targets the Task Parallel Library. This will shield you from low level thread manipulation and.
C# PCL HMACSHAX with BouncyCastle-PCL
c#,bouncycastle,portable-class-library
Guitar rig 5 dll download. Try like this for HmacSha256 public class HmacSha256 { private readonly HMac _hmac; public HmacSha256(byte[] key) { _hmac = new HMac(new Sha256Digest()); _hmac.Init(new KeyParameter(key)); } public byte[] ComputeHash(byte[] value) { if (value null) throw new ArgumentNullException('value'); byte[] resBuf = new byte[_hmac.GetMacSize()]; _hmac.BlockUpdate(value, 0, value.Length); _hmac.DoFinal(resBuf, 0); return resBuf; }.
How do I run C# within a Node.js server application?
c#,node.js,server Download google play music on mac.
I have idea for your problem . U can write c# console app and then call it from nodejs . U can look this url Execute an exe file using node.js . after c# job writes all data to database, u can look to the this table read from it.
Regex to remove `.` from a sub-string enclosed in square brackets
c#,.net,regex,string,replace
To remove all the dots present inside the square brackets. Regex.Replace(str, @'.(?=[^[]]*])', '); DEMO To remove dot or ?. Regex.Replace(str, @'[.?](?=[^[]]*])', '); .
MvcSiteMapProvider - Enhanced bootstrap dropdown menu
c#,twitter-bootstrap,asp.net-mvc-5,mvcsitemapprovider,mvcsitemap
node.Descendants should be node.Children Learn the difference on Descendants and Children here, CSS Child vs Descendant selectors (Never mind the post beeing about CSS, this is a generic pattern).
deployment of a site asp.net and iis
c#,asp.net,iis
There are several domain providers like: godaddy, name etc you can use to buy a domain name. These providers also provide you steps to map the domain name to your website. Check out this link for example. This link explains domain name configuration in details.
Regex that allow void fractional part of number
c#,regex
Just get the dot outside of the captruing group and then make it as optional. @'[+-]?d+.?d*' Use anchors if necessary. @'^[+-]?d+.?d*$' .
Marshal struct in struct from c# to c++
Ksfetch mac little snitch. c#,c++,marshalling
Change this: [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 36)] private string iu; to this: [MarshalAs(UnmanagedType.LPStr)] private string iu; Note that this code is good only to pass a string in the C#->C++ direction. For the opposite direction (C++->C#) it is more complex, because C# can't easily deallocate C++ allocated memory. Other important thing:.
Convert contents of an XmlNodeList to a new XmlDocument without looping
c#,xml,xpath,xmldocument,xmlnodelist
If you're happy to convert it into LINQ to XML, it's really simple: XDocument original = .; // However you load the original document // Separated out for clarity - could be inlined, of course string xpath = '//Person[not(PersonID = following::Person/PersonID)]' XDocument people = new XDocument( new XElement('Persons', original.XPathSelectElements(xpath) ).
Index was out of range. Must be non-negative or less than size of collection [duplicate]
It looks like you have a typo in your loop condition: for (int index = filePaths.Count(); filePaths.Count() > 9; index--) It should be for (int index = filePaths.Count() - 1; index > 9; index--) Also note that for the first iteration of loop you're trying to access filePaths[filePaths.Count()] which is.
SettingsProvider class - should it be in DAL or BLL project?
The glue vst plugin free download youtube. c#,data-access-layer,bll
I don't agree that there is a right layer for you to put that class since you reading values from the config file based on keys provided and it can be needed by one or all of the layers. In the case of all layers using this class, you can.
System.net.http.formatting causing issues with Newtonsoft.json
c#,asp.net,asp.net-mvc,json.net
Does the assemblyBinding tag have proper xmlns schema? Check if the issue you are encountering is same as Assembly binding redirect does not work
Register return Type
c#,generics,return-type
If you know the type at startup, you could just derive the class: public class UserLogin : GenericLogin<ABC01_REGISTERED_USER> { } Then use that class all along. Else, you have to supply the type name every time, since else it can't know that you want to use that type every time.
while Inherit style in WPF it affect parent style
c#,xaml,styles,wpf-controls
If you declare a Style without an x:Key, it will override the default style for that control. <Style TargetType='local:CustomControl'> So the code above will effect all CustomControl elements throughout the entire application (or within the scope). If you do not want to override the base style, you can give your.
SQL Server / C# : Filter for System.Date - results only entries at 00:00:00
c#,asp.net,sql-server,date,gridview-sorting
What happens if you change all of the filters to use 'LIKE': if (DropDownList1.SelectedValue.ToString().Equals('Start')) { FilterExpression = string.Format('Start LIKE '{0}%', TextBox1.Text); } Then, you're not matching against an exact date (at midnight), but matching any date-times which start with that date. Update Or perhaps you could try this. if (DropDownList1.SelectedValue.ToString().Equals('Start')).
Load XML to list using LINQ [duplicate]
c#,xml,linq
Make a base class which will have id,x,y,z, and have Vendors,Bankers and Hospitals extend it. Then you can have a collection of the base class, and add to it the classes that inherit from it.
Convert Date Time to IST
You need to use 'India Standard Time' instead of 'Indian'. Please refer to this link for a list of the time zone descriptions.
Call Sync method call from Async Callback?
c#,asynchronous,synchronous
Callbacks are independent as they're invoked on the thread-pools IO completion workers. If you're interested, you can see that in the source code. This particular method is for the Socket class (which TcpClient and UdpClient use internally), where overlapped IO is used to invoke the callback (see the comment on.
Catch concurrency exception in EF6 to change message to be more user friendly
c#,asp.net,.net,entity-framework,entity-framework-6
You are executing an asynchronous method. This means that any exceptions will be thrown when you call await on the returned task or when you try to retrieve the results using await myTask; You never do so, which means that the exception is thrown and caught higher up your call.
![]() Visual Studio Assembly force-installs Target Framework
c#,.net,visual-studio-2013,.net-framework-version
The targeted .NET version is the only version that the app will depend upon by default. Visual Studio will not automatically add higher and backwards compatible releases. Do this manually by adding other .NET versions to a configuration file: On the Visual Studio menu bar: Choose Project; Add New Item;.
Update list of items in c#
c#,linq,list,updates
I would do something like this: (for ordinairy lists) // the current list var currentList = new List<Employee>(); currentList.Add(new Employee { Id = 154, Name = 'George', Salary = 10000 }); currentList.Add(new Employee { Id = 233, Name = 'Alice', Salary = 10000 }); // new list var newList =.
Collect strings after a foreach loop
c#,xml,foreach
Yep, you need to do the adding within the loop. I'd use a List<string> as it supports LINQ: XmlNodeList skillNameNodeList=SkillXML.GetElementsByTagName('name'); List<string> skills = new List<string>(); foreach (XmlNode skillNameNode in skillNameNodeList) { skills.Add(skillNameNode.Attributes['value'].Value); } .
Unable to find the auto created Database
c#,asp.net,asp.net-mvc,entity-framework
If you don't specify a database name then the connection will use the default database for the user, in this case it's integrated security so it's your Windows login. As you likely have full system admin on the server the default database will be master so you will find all.
Export data from table in Pervasive
c#,pervasive
No, there is no way to export data programmatically through the 'Export Data' wizard in the Pervasive Control Center. You would need to either write or have written an export module. https://vmtree117.weebly.com/team-fortress-2-download-ita-mac.html.
How to Customize Visual Studio Setup
c#,visual-studio,setup-project
You can use a Microsoft Setup project or WIX (easily integrate with Visual Studio). Both are free. •You can do almost all of your customization in setup project by adding custom actions. •WIX (window installer xml) is the better option. You can do a complete customization from wix but it.
How can I determine if an object of anonymous type is empty?
c#,.net
Anonymous types do not provide operator overloads for , although it wouldn't matter in this case since one of the arguments is typed object. However the C# compiler does provide Equals, GetHashCode, and ToString implementations. Use the static object.Equals, method which will do the appropriate null checks and then call.
Show/hide tinymce with radio buttons
c#,asp.net,asp.net-mvc,tinymce
Your missing an @symbol for the id attribute: Modify your script as well like this: ***EDIT some thing seems off about the radio buttons only one should be checked and they should have the same name ** you can use the # to denote and ID in Jquery by the.
How to return result while applying Command query separation (CQS)
c#,design-patterns,cqrs,command-query-separation
In such scenario I usually go with generating new entity Ids on the client. Like this: public class ProductController: Controller{ private IProductCommandService commandService; private IProductQueryService queryService; private IIdGenerationService idGenerator; [HttpPost] public ActionResult Create(Product product){ var newProductId = idGenerator.NewId(); product.Id = newProductId; commandService.AddProduct(product); //TODO: add url parameter or TempData key to.
Aligning StackPanel to top-center in CanvasGenerate 128 Bit Key
c#,wpf,xaml,canvas
If you don't want any input or hit testing on a certain element you should set the IsHitTestVisible property to false: <Grid> <Canvas Name='Canvas' Background='#EFECCA'> <DockPanel VerticalAlignment='Stretch' HorizontalAlignment='Stretch' Width='{Binding ActualWidth, ElementName=Canvas}' Height='{Binding ActualHeight, ElementName=Canvas}' MouseLeftButtonDown='DockPanel_MouseLeftButtonDown' TouchDown='DockPanel_TouchDown' Panel.ZIndex='2' Background='Transparent'> </DockPanel> <Button Width='50' Height='50'.
how can I add a column to IQueryable object and modify its values
Office for mac 2014. c#,.net,linq,grid,devexpress
Simple example for using a non-anonymous class. public class MyLovelyClass { public Int32 Number { get; set; } public bool Selection { get; set; } } var packs = from r in new XPQuery<Roll>(session) select new MyLovelyClass() { Number = r.number }; gcPack.DataSource = packs; .
check if file is image
c#,asp.net,asp.net-mvc
You can't do this: string.Contains(string array) Instead you have to rewrite that line of code to this: if (file null || formats.Any(f => file.Contains(f))) And this can be shortened down to: if (file null || formats.Any(file.Contains)) .
Why is the task is not cancelled when I call CancellationTokenSource's Cancel method in async method?C# 128 Bit Int
c#,asynchronous,task,cancellationtokensource,cancellation-token
Cancellation in .Net is cooperative. That means that the one holding the CancellationTokenSource signals cancellation and the one holding the CancellationToken needs to check whether cancellation was signaled (either by polling the CancellationToken or by registering a delegate to run when it is signaled). In your Task.Run you use the.
Generate Random 256 Bit Key C#How to send Ctrl+S through SendKeys.Send() method to save a file(save as dialog)
c#,.net,windows,sendkeys
I believe you need to use: SendKeys.SendWait('^(s)'); Instead of: SendKeys.SendWait('^%s?'); Have a look at https://msdn.microsoft.com/en-us/library/system.windows.forms.sendkeys.send(v=vs.110).aspx for more information.
C# Code design / Seperate classes for each TabControl
c#,oop,architecture,software-design,code-design
Place a UserControl on each tab.
Get object by attribute value [duplicate]
c#,reflection,custom-attributes,spring.net
If you have obtained the Assembly, you can just iterate over the types and check for your conditions: var matchingTypes = from t in asm.GetTypes() where !t.IsInterface && !t.IsAbstract where typeof(ICustomInterface).IsAssignableFrom(t) let foo = t.GetCustomAttribute<FooAttribute>() where foo != null && foo.Bar Y select t; I am assuming you want.
C# MySQL Parameters.AddWithValue
c#,mysql
Generate 256 Bit Key C#
You try to add all your 52 parameter and their values with one AddWithValue method. You can't do that. First of all, you need to define all your parameters in your command with your column names like; command.CommandText = 'INSERT INTO tb_mitarbeiter (Vorname, id, projectnummber.) VALUES (?name, ?id, ?projektnummer.)'; Then.
Memory consumption when chaining string methods
c#,string,immutability,method-chaining
C# Generate 128 Bit Key
Is it true that when you chain string functions, every function instantiates a new string? In general, yes. Every function that returns a modified string does so by creating a new string object that contains the full new string which is stored separately from the original string. There are.
Error when building an XDocument
c#,xml,linq,xpath,linq-to-xml
You can ignore pretty much all your code, the issue is just this: XDocument people = new XDocument('Persons'); You can't create an XDocument containing a string, you need to add an element: XDocument people = new XDocument( new XElement('Persons', original.XPathSelectElements(xpathFilterDups))); .
DialogBox with value verifications
c#,.net,winforms
The problem is you're trying to enable or disable the button when checking individual textboxes and they're conflicting with each other, instead the logic needs to be at a higher level. Change your textbox validation function to return a bool, and use that in ValidateAll to determine whether or not.
C# - Can't connect to remote MySQL server
c#,mysql
When connecting to a MySQL-Database I always used the MySQL Connector you can get here: https://dev.mysql.com/downloads/connector/net/6.9.html You have to import the MySQL namespaces to your project and then you can use the MySQLConnection instead of the SQLConnection that is, as far as I know, only for MSSQL servers. http://www.codeproject.com/Tips/423233/How-to-Connect-to-MySQL-Using-Csharp.
Foreign key in C#
c#,sql,sql-server,database
You want create relationship in two table Refer this link http://www.c-sharpcorner.com/Blogs/5608/create-a-relationship-between-two-dataset-tables.aspx.
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