https://github.com/harrison314/PkcsExtensions.Blazor

Add PKCS extensionsfor for Blazor WebAssembly and light WebCrypto interop.
https://github.com/harrison314/PkcsExtensions.Blazor

Last synced: about 2 months ago
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Add PKCS extensionsfor for Blazor WebAssembly and light WebCrypto interop.

• Host: GitHub
• URL: https://github.com/harrison314/PkcsExtensions.Blazor
• Owner: harrison314
• License: gpl-3.0
• Created: 2020-05-20T18:18:04.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2021-08-10T19:51:28.000Z (about 3 years ago)
• Last Synced: 2024-07-03T23:56:19.734Z (3 months ago)
• Language: C#
• Homepage:
• Size: 109 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# PkcsExtensions.Blazor

[![NuGet Status](http://img.shields.io/nuget/v/PkcsExtensions.Blazor.svg?style=flat)](https://www.nuget.org/packages/PkcsExtensions.Blazor/)

 Add crypto and digital signature functionality for Blazor and light [WebCrypto](https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API) interop.

 ## Features

 - Namespace **PkcsExtensions.Blazor**:

   - `IWebCryptoProvider` - provide generate random numbers, generate RSA and ECDSA (as JsonWebKey) key pairs

   - `IEcWebCryptoProvider` - provide methods `GetSharedDhmSecret` for derive bytes using _Diffie Hellman Merkle_ and `GetSharedEphemeralDhmSecret` for ECIES scheme.

- Namespace **PkcsExtensions.Blazor.Jwk** - implementation of __JsonWebKey__

- Namespace **PkcsExtensions.Blazor.Security** - extensions for [System.Security.Cryptography](https://docs.microsoft.com/en-us/dotnet/api/system.security.cryptography?view=netstandard-2.1)

## Usage

Install package `dotnet add package PkcsExtensions.Blazor` to Blazor WebAssebmly project.

Add to _index.html_:

```html

```

or minifiy version:

```html

```

And register services in _Main_ method:

```cs

    public class Program

    {

        public static async Task Main(string[] args)

        {

            var builder = WebAssemblyHostBuilder.CreateDefault(args);

            builder.RootComponents.Add("app");

            builder.Services.AddSingleton(new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

            

            builder.Services.AddWebCryptoProvider();

            WebAssemblyHost host = builder.Build();

            await host.RunAsync();

        }

    }

```

## Examples

See [other examples](Examples/BlazorWebAssemblyExamples.md).

## Recommendations

- Avoid use WebCyrpto for hashing, HMAC-ing, encryption, because their implementations has differs between browsers and operating systems. Use _.Net_ implementation.

- Avoid use WebCrypto for digital signing because it does not support hash signing.

- Hint: Consider using high performance elliptic curves [Curve25519](https://en.wikipedia.org/wiki/Curve25519),

[Ed25519](https://en.wikipedia.org/wiki/EdDSA#Ed25519) or similar. Use full managed implementation e.g. [Chaos.NaCl library](https://github.com/CodesInChaos/Chaos.NaCl).

## Read more

1. [PkcsExtensions](https://github.com/harrison314/PkcsExtensions)

1. [WebCrypto support in browsers](https://diafygi.github.io/webcrypto-examples/)