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//-----------------------------------------------------------------------
// <copyright file="OAuth1RsaSha1HttpMessageHandler.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;
using Validation;
/// <summary>
/// A delegating HTTP handler that signs outgoing HTTP requests
/// with an RSA-SHA1 signature.
/// </summary>
public class OAuth1RsaSha1HttpMessageHandler : OAuth1HttpMessageHandlerBase {
/// <summary>
/// Gets or sets the certificate used to sign outgoing messages. Used only by Consumers.
/// </summary>
public X509Certificate2 SigningCertificate { get; set; }
/// <summary>
/// Calculates the signature for the specified buffer.
/// </summary>
/// <param name="signedPayload">The payload to calculate the signature for.</param>
/// <returns>
/// The signature.
/// </returns>
protected override byte[] Sign(byte[] signedPayload) {
Verify.Operation(this.SigningCertificate != null, Strings.RequiredPropertyNotYetPreset);
var provider = (RSACryptoServiceProvider)this.SigningCertificate.PrivateKey;
byte[] binarySignature = provider.SignData(signedPayload, "SHA1");
return binarySignature;
}
/// <summary>
/// Gets the signature method to include in the oauth_signature_method parameter.
/// </summary>
/// <value>
/// The signature method.
/// </value>
protected override string SignatureMethod {
get { return "RSA-SHA1"; }
}
}
}
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