Chapter.Net.Security 1.1.0

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Chapter.Net.Security Library

Overview

Chapter.Net.Security provides ways to secure data and strings.

Features

• Hshing: Generates salts and hashes data on multiple ways.
• XML Signing: Signs and verifies XML structures with a given key.
• Tokening: Generates token to verify communications and more.

Getting Started

1. Installation:

   • Install the Chapter.Net.Security library via NuGet Package Manager:

   dotnet add package Chapter.Net.Security
   

2. Hashing:

   • Usage

   public void ViewModel : ObservableObject
   {
       public IHashing _hashing;
   
       public ViewModel(IHashing hashing)
       {
           _hashing = hashing;
       }
   
       public string SavePassword(string userName, string password)
       {
           var data = _hashing.GenerateSecureHash(password);
           using var userRepo = Context.GetRepo<UserRepository>();
           var entity = userRepo.GetUser(userName);
           entity.Password = data.Value;
           entity.Salt = data.Salt;
           userRepo.SubmitChanges();
       }
   
       public bool ValidatePassword(string userName, string password)
       {
           using var userRepo = Context.GetRepo<UserRepository>();
           var entity = userRepo.GetUser(userName);
           var hashedPassword = _hashing.GenerateSecureHash(password, entity.Salt);
           return hashedPassword == entity.Password;
       }
   }
   

3. XML Signing:

   • Write an XML file signed

   private void WriteSignedData(Data data, string filePath)
   {
       var options = new SignedXmlOptions
       {
           Algo = GetKey(),
           WriteIndented = true
       };
   
       var writer = new SignedXmlWriter(options);
       writer.Write(data, filePath);
   }
   
   private AsymmetricAlgorithm GetKey()
   {
       // The key used for write, must be used for read.
       var keyString = "<RSAKeyValue><Modulus>xo6kQb......";
       var key = new RSACryptoServiceProvider();
       key.FromXmlString(keyString);
   }
   

   • Read and Verify an signed XML file

   private Data ReadSignedFile(string filePath)
   {
       var options = new SignedXmlOptions
       {
           Algo = GetKey(),
           AllowReadInvalid = true
       };
   
       var reader = new SignedXmlReader(options);
       reader.ReadFile(filePath, out Data data);
       return data;
   }
   
   private AsymmetricAlgorithm GetKey()
   {
       // The key used for write, must be used for read.
       var keyString = "<RSAKeyValue><Modulus>xo6kQb......";
       var key = new RSACryptoServiceProvider();
       key.FromXmlString(keyString);
   }
   

4. Tokening:

   • Usage

   public void ViewModel : ObservableObject
   {
       public ITokenGenerator _tokenGenerator;
   
       public ViewModel(ITokenGenerator tokenGenerator)
       {
           _tokenGenerator = tokenGenerator;
       }
   
       public string GetNewToken(string userName)
       {
           using var userRepo = Context.GetRepo<UserRepository>();
           var entity = userRepo.GetUser(userName);
           return entity.IsActive() ? _tokenGenerator.Generate(64) : null;
       }
   }
   

Links

• NuGet
• GitHub

License

Copyright (c) David Wendland. All rights reserved. Licensed under the MIT License. See LICENSE file in the project root for full license information.