49 lines
1.6 KiB
C#
49 lines
1.6 KiB
C#
using System;
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using System.Text;
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using BirdsiteLive.Domain.Factories;
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namespace BirdsiteLive.Domain
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{
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public interface ICryptoService
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{
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string GetUserPem(string id);
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string SignAndGetSignatureHeader(DateTime date, string actor, string host);
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}
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public class CryptoService : ICryptoService
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{
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private readonly IMagicKeyFactory _magicKeyFactory;
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#region Ctor
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public CryptoService(IMagicKeyFactory magicKeyFactory)
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{
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_magicKeyFactory = magicKeyFactory;
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}
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#endregion
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public string GetUserPem(string id)
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{
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return _magicKeyFactory.GetMagicKey().AsPEM;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="data"></param>
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/// <param name="actor">in the form of https://domain.io/actor</param>
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/// <param name="host">in the form of domain.io</param>
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/// <returns></returns>
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public string SignAndGetSignatureHeader(DateTime date, string actor, string targethost)
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{
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var httpDate = date.ToString("r");
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var signedString = $"(request-target): post /inbox\nhost: {targethost}\ndate: {httpDate}";
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var signedStringBytes = Encoding.UTF8.GetBytes(signedString);
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var signature = _magicKeyFactory.GetMagicKey().Sign(signedStringBytes);
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var sig64 = Convert.ToBase64String(signature);
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var header = "keyId=\"" + actor + "\",headers=\"(request-target) host date\",signature=\"" + sig64 + "\"";
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return header;
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}
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}
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} |