public static void CreateEphemeral_WithParameters()
{
CngAlgorithm alg = CngAlgorithm.ECDiffieHellmanP256;
CngKeyCreationParameters p = new CngKeyCreationParameters();
p.ExportPolicy = CngExportPolicies.AllowExport;
p.KeyUsage = CngKeyUsages.KeyAgreement;
p.UIPolicy = new CngUIPolicy(CngUIProtectionLevels.ForceHighProtection, "MyFriendlyName", "MyDescription", "MyUseContext", "MyCreationTitle");
byte[] myPropValue1 = "23afbc".HexToByteArray();
p.Parameters.Add(new CngProperty("MyProp1", myPropValue1, CngPropertyOptions.CustomProperty));
byte[] myPropValue2 = "8765".HexToByteArray();
p.Parameters.Add(new CngProperty("MyProp2", myPropValue2, CngPropertyOptions.CustomProperty));
using (CngKey key = CngKey.Create(alg, null, p))
{
Assert.Equal(CngAlgorithm.ECDiffieHellmanP256, key.Algorithm);
Assert.Equal(CngExportPolicies.AllowExport, key.ExportPolicy);
Assert.Equal(CngKeyUsages.KeyAgreement, key.KeyUsage);
CngUIPolicy uiPolicy = key.UIPolicy;
Assert.Equal(CngUIProtectionLevels.ForceHighProtection, uiPolicy.ProtectionLevel);
Assert.Equal("MyFriendlyName", uiPolicy.FriendlyName);
Assert.Equal("MyDescription", uiPolicy.Description);
Assert.Equal("MyUseContext", uiPolicy.UseContext);
Assert.Equal("MyCreationTitle", uiPolicy.CreationTitle);
byte[] propValue1Actual = key.GetProperty("MyProp1", CngPropertyOptions.CustomProperty).GetValue();
Assert.Equal <byte>(myPropValue1, propValue1Actual);
byte[] propValue2Actual = key.GetProperty("MyProp2", CngPropertyOptions.CustomProperty).GetValue();
Assert.Equal <byte>(myPropValue2, propValue2Actual);
}
}
public static void TestImportKey()
{
using (CngKey key = CngKey.Import(TestData.Key_ECDiffieHellmanP256, CngKeyBlobFormat.GenericPublicBlob))
{
Assert.Equal(CngAlgorithm.ECDiffieHellmanP256, key.Algorithm);
Assert.Equal(CngAlgorithmGroup.ECDiffieHellman, key.AlgorithmGroup);
Assert.Equal(CngExportPolicies.None, key.ExportPolicy);
Assert.True(key.IsEphemeral);
Assert.False(key.IsMachineKey);
Assert.Null(key.KeyName);
Assert.Equal(0x100, key.KeySize);
Assert.Equal(CngKeyUsages.AllUsages, key.KeyUsage);
Assert.Equal(IntPtr.Zero, key.ParentWindowHandle);
Assert.Equal(CngProvider.MicrosoftSoftwareKeyStorageProvider, key.Provider);
CngUIPolicy policy = key.UIPolicy;
Assert.Null(policy.CreationTitle);
Assert.Null(policy.Description);
Assert.Null(policy.FriendlyName);
Assert.Null(policy.UseContext);
Assert.Equal(CngUIProtectionLevels.None, policy.ProtectionLevel);
Assert.Null(key.UniqueName);
}
}
private static void VerifyImportedKey(CngKey key)
{
Assert.Equal(new CngAlgorithm("DSA"), key.Algorithm);
Assert.Equal(CngAlgorithmGroup.Dsa, key.AlgorithmGroup);
Assert.Equal(CngExportPolicies.None, key.ExportPolicy);
Assert.Equal(true, key.IsEphemeral);
Assert.Equal(false, key.IsMachineKey);
Assert.Equal(null, key.KeyName);
Assert.Equal(CngKeyUsages.AllUsages, key.KeyUsage);
Assert.Equal(IntPtr.Zero, key.ParentWindowHandle);
Assert.Equal(CngProvider.MicrosoftSoftwareKeyStorageProvider, key.Provider);
CngUIPolicy policy = key.UIPolicy;
Assert.Equal(null, policy.CreationTitle);
Assert.Equal(null, policy.Description);
Assert.Equal(null, policy.FriendlyName);
Assert.Equal(null, policy.UseContext);
Assert.Equal(CngUIProtectionLevels.None, policy.ProtectionLevel);
Assert.Equal(null, key.UniqueName);
}
public static void OpenFromHandle()
{
byte[] blobOriginal = TestData.Key_ECDiffieHellmanP256;
using (CngKey keyOriginal = CngKey.Import(blobOriginal, CngKeyBlobFormat.GenericPublicBlob))
{
SafeNCryptKeyHandle keyHandle = keyOriginal.Handle;
Assert.NotNull(keyHandle);
using (CngKey key = CngKey.Open(keyHandle, CngKeyHandleOpenOptions.EphemeralKey))
{
keyHandle.Dispose();
Assert.Equal(keyOriginal.Algorithm, key.Algorithm);
Assert.Equal(keyOriginal.AlgorithmGroup, key.AlgorithmGroup);
Assert.Equal(keyOriginal.ExportPolicy, key.ExportPolicy);
Assert.Equal(keyOriginal.IsEphemeral, key.IsEphemeral);
Assert.Equal(keyOriginal.IsMachineKey, key.IsMachineKey);
Assert.Equal(keyOriginal.KeyName, key.KeyName);
Assert.Equal(keyOriginal.KeySize, key.KeySize);
Assert.Equal(keyOriginal.KeyUsage, key.KeyUsage);
Assert.Equal(keyOriginal.ParentWindowHandle, key.ParentWindowHandle);
Assert.Equal(keyOriginal.Provider, key.Provider);
CngUIPolicy policy = key.UIPolicy;
Assert.Equal(keyOriginal.UIPolicy.CreationTitle, policy.CreationTitle);
Assert.Equal(keyOriginal.UIPolicy.Description, policy.Description);
Assert.Equal(keyOriginal.UIPolicy.FriendlyName, policy.FriendlyName);
Assert.Equal(keyOriginal.UIPolicy.UseContext, policy.UseContext);
Assert.Equal(keyOriginal.UIPolicy.ProtectionLevel, policy.ProtectionLevel);
Assert.Equal(keyOriginal.UniqueName, key.UniqueName);
byte[] reExported = key.Export(CngKeyBlobFormat.GenericPublicBlob);
Assert.Equal <byte>(blobOriginal, reExported);
}
}
}