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Implement CSRNG (Cryptographically Secure Random Bytes) (#216)

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* Implement CSRNG (Cryptographically Secure Random Bytes)

* Compliant with review.

* Dispose Rng
This commit is contained in:
Starlet 2018-07-13 16:36:57 -05:00 committed by Ac_K
parent 37bf02f057
commit 494f8f0248
2 changed files with 54 additions and 0 deletions
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4
Ryujinx.HLE/OsHle/Services/ServiceFactory.cs
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@ -18,6 +18,7 @@ using Ryujinx.HLE.OsHle.Services.Prepo;
using Ryujinx.HLE.OsHle.Services.Set;
using Ryujinx.HLE.OsHle.Services.Sfdnsres;
using Ryujinx.HLE.OsHle.Services.Sm;
using Ryujinx.HLE.OsHle.Services.Spl;
using Ryujinx.HLE.OsHle.Services.Ssl;
using Ryujinx.HLE.OsHle.Services.Vi;
using System;
@ -66,6 +67,9 @@ namespace Ryujinx.HLE.OsHle.Services
case "caps:ss":
return new IScreenshotService();
case "csrng":
return new IRandomInterface();
case "friend:a":
return new IServiceCreator();

50
Ryujinx.HLE/OsHle/Services/Spl/IRandomInterface.cs Normal file
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@ -0,0 +1,50 @@
using Ryujinx.HLE.OsHle.Ipc;
using System;
using System.Collections.Generic;
using System.Security.Cryptography;
namespace Ryujinx.HLE.OsHle.Services.Spl
{
class IRandomInterface : IpcService, IDisposable
{
private Dictionary<int, ServiceProcessRequest> m_Commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
private RNGCryptoServiceProvider Rng;
public IRandomInterface()
{
m_Commands = new Dictionary<int, ServiceProcessRequest>()
{
{ 0, GetRandomBytes }
};
Rng = new RNGCryptoServiceProvider();
}
public long GetRandomBytes(ServiceCtx Context)
{
byte[] RandomBytes = new byte[Context.Request.ReceiveBuff[0].Size];
Rng.GetBytes(RandomBytes);
Context.Memory.WriteBytes(Context.Request.ReceiveBuff[0].Position, RandomBytes);
return 0;
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool Disposing)
{
if (Disposing)
{
Rng.Dispose();
}
}
}
}