Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.mimekit.net/docs/html/M_MimeKit_Cryptography_ArcSigner_SignAsync_1.htm below:

ArcSignerSignAsync(FormatOptions, MimeMessage, IListString, CancellationToken) Method

Asynchronously digitally sign and seal a message using ARC.

MimeKit (in MimeKit.dll) Version: 4.12.0

public Task SignAsync(
	FormatOptions options,
	MimeMessage message,
	IList<string> headers,
	CancellationToken cancellationToken = default
)

options  FormatOptions

The formatting options.

message  MimeMessage

The message to sign.

headers  IListString

The list of header fields to sign.

cancellationToken  CancellationToken  (Optional)

The cancellation token.

An awaitable task.

options is .

-or-

message is .

-or-

headers is .

headers does not contain the 'From' header.

-or-

headers contains one or more of the following headers: Return-Path, Received, Comments, Keywords, Bcc, Resent-Bcc, or DKIM-Signature.

Asynchronously digitally signs and seals a message using ARC.

using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Collections.Generic;

using MimeKit;
using MimeKit.Cryptography;

namespace ArcSignerExample
{
    class ExampleArcSigner : ArcSigner
    {
        public ExampleArcSigner (Stream stream, string domain, string selector, DkimSignatureAlgorithm algorithm = DkimSignatureAlgorithm.RsaSha256) : base (stream, domain, selector, algorithm)
        {
        }

        public ExampleArcSigner (string fileName, string domain, string selector, DkimSignatureAlgorithm algorithm = DkimSignatureAlgorithm.RsaSha256) : base (fileName, domain, selector, algorithm)
        {
        }

        public ExampleArcSigner (AsymmetricKeyParameter key, string domain, string selector, DkimSignatureAlgorithm algorithm = DkimSignatureAlgorithm.RsaSha256) : base (key, domain, selector, algorithm)
        {
        }

        public string AuthenticationServiceIdentifier {
            get; set;
        }

        
        
        
        
        
        
        
        
        
        
        
        
        
        protected override AuthenticationResults GenerateArcAuthenticationResults (FormatOptions options, MimeMessage message, CancellationToken cancellationToken)
        {
            var results = new AuthenticationResults (AuthenticationServiceIdentifier);

            for (int i = 0; i < message.Headers.Count; i++) {
                var header = message.Headers[i];

                if (header.Id != HeaderId.AuthenticationResults)
                    continue;

                if (!AuthenticationResults.TryParse (header.RawValue, out AuthenticationResults authres))
                    continue;

                if (authres.AuthenticationServiceIdentifier != AuthenticationServiceIdentifier)
                    continue;

                foreach (var result in authres.Results) {
                    if (!results.Results.Any (r => r.Method == result.Method))
                        results.Results.Add (result);
                }
            }

            return results;
        }

        protected override Task<AuthenticationResults> GenerateArcAuthenticationResultsAsync (FormatOptions options, MimeMessage message, CancellationToken cancellationToken)
        {
            return Task.FromResult (GenerateArcAuthenticationResults (options, message, cancellationToken));
        }
    }

    class Program
    {
        public static void Main (string[] args)
        {
            if (args.Length < 2) {
                Help ();
                return;
            }

            for (int i = 0; i < args.Length; i++) {
                if (args[i] == "--help") {
                    Help ();
                    return;
                }
            }

            var headers = new HeaderId[] { HeaderId.From, HeaderId.Subject, HeaderId.Date };
            var signer = new ExampleArcSigner ("privatekey.pem", "example.com", "brisbane", DkimSignatureAlgorithm.RsaSha256) {
                HeaderCanonicalizationAlgorithm = DkimCanonicalizationAlgorithm.Simple,
                BodyCanonicalizationAlgorithm = DkimCanonicalizationAlgorithm.Simple,
                AgentOrUserIdentifier = "@eng.example.com",
            };

            if (!File.Exists (args[0])) {
                Console.Error.WriteLine ("{0}: No such file.", args[0]);
                return;
            }

            var message = MimeMessage.Load (args[0]);

            
            
            
            message.Prepare (EncodingConstraint.SevenBit);

            signer.Sign (message, headers);

            using (var stream = File.Create (args[1]))
                message.WriteTo (stream);
        }

        static void Help ()
        {
            Console.WriteLine ("Usage is: ArcSigner [options] [message] [output]");
            Console.WriteLine ();
            Console.WriteLine ("Options:");
            Console.WriteLine ("  --help               This help menu.");
        }
    }
}

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4