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Add CSharp support for setting the auth on a key blob #237

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merged 1 commit into from
Aug 11, 2022
Merged

Add CSharp support for setting the auth on a key blob #237

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3 changes: 3 additions & 0 deletions wrapper/CSharp/wolfTPM-tests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,9 @@ private void LoadGeneratedKey(string algorithm)
rc = device.LoadKey(blob, parent_key);
Assert.AreEqual((int)Status.TPM_RC_SUCCESS, rc);

rc = blob.SetKeyAuthPassword("ThisIsMyKeyAuth");
Assert.AreEqual((int)Status.TPM_RC_SUCCESS, rc);

rc = device.UnloadHandle(blob);
Assert.AreEqual((int)Status.TPM_RC_SUCCESS, rc);
}
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25 changes: 22 additions & 3 deletions wrapper/CSharp/wolfTPM.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,10 @@ private static extern int wolfTPM2_SetKeyBlobFromBuffer(IntPtr key,
[DllImport(DLLNAME, EntryPoint = "wolfTPM2_GetHandleRefFromKeyBlob")]
private static extern IntPtr wolfTPM2_GetHandleRefFromKeyBlob(IntPtr keyBlob);

[DllImport(DLLNAME, EntryPoint = "wolfTPM2_SetKeyAuthPassword")]
private static extern int wolfTPM2_SetKeyAuthPassword(
IntPtr keyBlob, string auth, int authSz);

internal IntPtr keyblob;

public KeyBlob()
Expand Down Expand Up @@ -282,6 +286,23 @@ public IntPtr GetHandle()
{
return wolfTPM2_GetHandleRefFromKeyBlob(keyblob);
}

/// <summary>
/// Set the authentication data for a key
/// </summary>
/// <param name="auth">pointer to auth data</param>
/// <returns>Success: 0</returns>
public int SetKeyAuthPassword(string auth)
{
int rc = wolfTPM2_SetKeyAuthPassword(keyblob,
auth,
auth.Length);
if (rc != (int)Status.TPM_RC_SUCCESS) {
throw new WolfTpm2Exception(
"wolfTPM2_SetKeyAuthPassword", rc);
}
return rc;
}
}

public class Key : IDisposable
Expand All @@ -300,9 +321,7 @@ public class Key : IDisposable

[DllImport(DLLNAME, EntryPoint = "wolfTPM2_SetKeyAuthPassword")]
private static extern int wolfTPM2_SetKeyAuthPassword(
IntPtr key,
string auth,
int authSz);
IntPtr key, string auth, int authSz);

[DllImport(DLLNAME, EntryPoint = "wolfTPM2_GetHandleRefFromKey")]
private static extern IntPtr wolfTPM2_GetHandleRefFromKey(IntPtr key);
Expand Down