C_Logout() public method

Logs a user out from a token
public C_Logout ( uint session ) : CKR
session uint The session's handle
return CKR
        public void _01_BasicSetPinTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                // Open RW session
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Set new pin for the logged in user
                rv = pkcs11.C_SetPIN(session, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length), Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_BasicDeriveKeyTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;

            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);

                // Open RW session
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate symetric key
                uint baseKeyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKey(pkcs11, session, ref baseKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Generate random data needed for key derivation
                byte[] data = new byte[24];
                rv = pkcs11.C_GenerateRandom(session, data, Convert.ToUInt32(data.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Specify mechanism parameters
                // Note that we are allocating unmanaged memory that will have to be freed later
                CK_KEY_DERIVATION_STRING_DATA mechanismParams = new CK_KEY_DERIVATION_STRING_DATA();
                mechanismParams.Data = UnmanagedMemory.Allocate(data.Length);
                UnmanagedMemory.Write(mechanismParams.Data, data);
                mechanismParams.Len = Convert.ToUInt32(data.Length);

                // Specify derivation mechanism with parameters
                // Note that CkmUtils.CreateMechanism() automaticaly copies mechanismParams into newly allocated unmanaged memory
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_XOR_BASE_AND_DATA, mechanismParams);

                // Derive key
                uint derivedKey = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_DeriveKey(session, ref mechanism, baseKeyId, null, 0, ref derivedKey);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with derived key
                Assert.IsTrue(derivedKey != CK.CK_INVALID_HANDLE);

                // In LowLevelAPI we have to free all unmanaged memory we previously allocated
                UnmanagedMemory.Free(ref mechanismParams.Data);
                mechanismParams.Len = 0;

                // In LowLevelAPI we have to free unmanaged memory taken by mechanism parameter
                UnmanagedMemory.Free(ref mechanism.Parameter);
                mechanism.ParameterLen = 0;

                rv = pkcs11.C_DestroyObject(session, baseKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_DestroyObject(session, derivedKey);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_BasicInitTokenAndPinTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                CK_TOKEN_INFO tokenInfo = new CK_TOKEN_INFO();
                rv = pkcs11.C_GetTokenInfo(slotId, ref tokenInfo);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Check if token needs to be initialized
                if ((tokenInfo.Flags & CKF.CKF_TOKEN_INITIALIZED) != CKF.CKF_TOKEN_INITIALIZED)
                {
                    // Token label is 32 bytes long string padded with blank characters
                    byte[] label = new byte[32];
                    for (int i = 0; i < label.Length; i++)
                        label[i] = 0x20;
                    Array.Copy(Settings.ApplicationNameArray, 0, label, 0, Settings.ApplicationNameArray.Length);
                    
                    // Initialize token and SO (security officer) pin
                    rv = pkcs11.C_InitToken(slotId, Settings.SecurityOfficerPinArray, Convert.ToUInt32(Settings.SecurityOfficerPinArray.Length), label);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    // Open RW session
                    uint session = CK.CK_INVALID_HANDLE;
                    rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    // Login as SO (security officer)
                    rv = pkcs11.C_Login(session, CKU.CKU_SO, Settings.SecurityOfficerPinArray, Convert.ToUInt32(Settings.SecurityOfficerPinArray.Length));
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    // Initialize user pin
                    rv = pkcs11.C_InitPIN(session, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    rv = pkcs11.C_Logout(session);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    rv = pkcs11.C_CloseSession(session);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                }
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_CreateDestroyObjectTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Prepare attribute template of new data object
                CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[5];
                template[0] = CkaUtils.CreateAttribute(CKA.CKA_CLASS, CKO.CKO_DATA);
                template[1] = CkaUtils.CreateAttribute(CKA.CKA_TOKEN, true);
                template[2] = CkaUtils.CreateAttribute(CKA.CKA_APPLICATION, Settings.ApplicationName);
                template[3] = CkaUtils.CreateAttribute(CKA.CKA_LABEL, Settings.ApplicationName);
                template[4] = CkaUtils.CreateAttribute(CKA.CKA_VALUE, "Data object content");

                // Create object
                uint objectId = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_CreateObject(session, template, Convert.ToUInt32(template.Length), ref objectId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // In LowLevelAPI we have to free unmanaged memory taken by attributes
                for (int i = 0; i < template.Length; i++)
                {
                    UnmanagedMemory.Free(ref template[i].value);
                    template[i].valueLen = 0;
                }

                // Do something interesting with new object

                // Destroy object
                rv = pkcs11.C_DestroyObject(session, objectId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _03_GetObjectSizeTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");
            
            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Create object
                uint objectId = CK.CK_INVALID_HANDLE;
                rv = Helpers.CreateDataObject(pkcs11, session, ref objectId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Determine object size
                uint objectSize = 0;
                rv = pkcs11.C_GetObjectSize(session, objectId, ref objectSize);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                Assert.IsTrue(objectSize > 0);

                rv = pkcs11.C_DestroyObject(session, objectId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_EncryptAndDecryptSinglePartTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate symetric key
                uint keyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKey(pkcs11, session, ref keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Generate random initialization vector
                byte[] iv = new byte[8];
                rv = pkcs11.C_GenerateRandom(session, iv, Convert.ToUInt32(iv.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Specify encryption mechanism with initialization vector as parameter.
                // Note that CkmUtils.CreateMechanism() automaticaly copies iv into newly allocated unmanaged memory.
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_DES3_CBC, iv);
                
                // Initialize encryption operation
                rv = pkcs11.C_EncryptInit(session, ref mechanism, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                byte[] sourceData = ConvertUtils.Utf8StringToBytes("Our new password");

                // Get length of encrypted data in first call
                uint encryptedDataLen = 0;
                rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), null, ref encryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                Assert.IsTrue(encryptedDataLen > 0);

                // Allocate array for encrypted data
                byte[] encryptedData = new byte[encryptedDataLen];

                // Get encrypted data in second call
                rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), encryptedData, ref encryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with encrypted data

                // Initialize decryption operation
                rv = pkcs11.C_DecryptInit(session, ref mechanism, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Get length of decrypted data in first call
                uint decryptedDataLen = 0;
                rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), null, ref decryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                Assert.IsTrue(decryptedDataLen > 0);
                
                // Allocate array for decrypted data
                byte[] decryptedData = new byte[decryptedDataLen];

                // Get decrypted data in second call
                rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), decryptedData, ref decryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with decrypted data
                Assert.IsTrue(Convert.ToBase64String(sourceData) == Convert.ToBase64String(decryptedData));

                // In LowLevelAPI we have to free unmanaged memory taken by mechanism parameter (iv in this case)
                UnmanagedMemory.Free(ref mechanism.Parameter);
                mechanism.ParameterLen = 0;

                rv = pkcs11.C_DestroyObject(session, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _03_EncryptAndDecryptSinglePartOaepTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate asymetric key pair
                uint pubKeyId = CK.CK_INVALID_HANDLE;
                uint privKeyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKeyPair(pkcs11, session, ref pubKeyId, ref privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Specify mechanism parameters
                CK_RSA_PKCS_OAEP_PARAMS mechanismParams = new CK_RSA_PKCS_OAEP_PARAMS();
                mechanismParams.HashAlg = (uint)CKM.CKM_SHA_1;
                mechanismParams.Mgf = (uint)CKG.CKG_MGF1_SHA1;
                mechanismParams.Source = (uint)CKZ.CKZ_DATA_SPECIFIED;
                mechanismParams.SourceData = IntPtr.Zero;
                mechanismParams.SourceDataLen = 0;
                
                // Specify encryption mechanism with parameters
                // Note that CkmUtils.CreateMechanism() automaticaly copies mechanismParams into newly allocated unmanaged memory.
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_RSA_PKCS_OAEP, mechanismParams);
                
                // Initialize encryption operation
                rv = pkcs11.C_EncryptInit(session, ref mechanism, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world");
                
                // Get length of encrypted data in first call
                uint encryptedDataLen = 0;
                rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), null, ref encryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                Assert.IsTrue(encryptedDataLen > 0);
                
                // Allocate array for encrypted data
                byte[] encryptedData = new byte[encryptedDataLen];
                
                // Get encrypted data in second call
                rv = pkcs11.C_Encrypt(session, sourceData, Convert.ToUInt32(sourceData.Length), encryptedData, ref encryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Do something interesting with encrypted data
                
                // Initialize decryption operation
                rv = pkcs11.C_DecryptInit(session, ref mechanism, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Get length of decrypted data in first call
                uint decryptedDataLen = 0;
                rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), null, ref decryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                Assert.IsTrue(decryptedDataLen > 0);
                
                // Allocate array for decrypted data
                byte[] decryptedData = new byte[decryptedDataLen];
                
                // Get decrypted data in second call
                rv = pkcs11.C_Decrypt(session, encryptedData, Convert.ToUInt32(encryptedData.Length), decryptedData, ref decryptedDataLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Array may need to be shrinked
                if (decryptedData.Length != decryptedDataLen)
                    Array.Resize(ref decryptedData, Convert.ToInt32(decryptedDataLen));

                // Do something interesting with decrypted data
                Assert.IsTrue(Convert.ToBase64String(sourceData) == Convert.ToBase64String(decryptedData));

                // In LowLevelAPI we have to free unmanaged memory taken by mechanism parameter
                UnmanagedMemory.Free(ref mechanism.Parameter);
                mechanism.ParameterLen = 0;
                
                rv = pkcs11.C_DestroyObject(session, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_DestroyObject(session, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_BasicObjectFindingTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Let's create two objects so we can find something
                uint objectId1 = CK.CK_INVALID_HANDLE;
                rv = Helpers.CreateDataObject(pkcs11, session, ref objectId1);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                uint objectId2 = CK.CK_INVALID_HANDLE;
                rv = Helpers.CreateDataObject(pkcs11, session, ref objectId2);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Prepare attribute template that defines search criteria
                CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[2];
                template[0] = CkaUtils.CreateAttribute(CKA.CKA_CLASS, CKO.CKO_DATA);
                template[1] = CkaUtils.CreateAttribute(CKA.CKA_TOKEN, true);

                // Initialize searching
                rv = pkcs11.C_FindObjectsInit(session, template, Convert.ToUInt32(template.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Get search results
                uint foundObjectCount = 0;
                uint[] foundObjectIds = new uint[2];
                foundObjectIds[0] = CK.CK_INVALID_HANDLE;
                foundObjectIds[1] = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_FindObjects(session, foundObjectIds, Convert.ToUInt32(foundObjectIds.Length), ref foundObjectCount);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Terminate searching
                rv = pkcs11.C_FindObjectsFinal(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with found objects
                Assert.IsTrue((foundObjectIds[0] != CK.CK_INVALID_HANDLE) && (foundObjectIds[1] != CK.CK_INVALID_HANDLE));

                // In LowLevelAPI we have to free unmanaged memory taken by attributes
                for (int i = 0; i < template.Length; i++)
                {
                    UnmanagedMemory.Free(ref template[i].value);
                    template[i].valueLen = 0;
                }

                rv = pkcs11.C_DestroyObject(session, objectId2);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_DestroyObject(session, objectId1);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_GenerateKeyTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Prepare attribute template of new key
                CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[4];
                template[0] = CkaUtils.CreateAttribute(CKA.CKA_CLASS, CKO.CKO_SECRET_KEY);
                template[1] = CkaUtils.CreateAttribute(CKA.CKA_KEY_TYPE, CKK.CKK_DES3);
                template[2] = CkaUtils.CreateAttribute(CKA.CKA_ENCRYPT, true);
                template[3] = CkaUtils.CreateAttribute(CKA.CKA_DECRYPT, true);

                // Specify key generation mechanism (needs no parameter => no unamanaged memory is needed)
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_DES3_KEY_GEN);
                
                // Generate key
                uint keyId = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_GenerateKey(session, ref mechanism, template, Convert.ToUInt32(template.Length), ref keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // In LowLevelAPI we have to free unmanaged memory taken by attributes
                for (int i = 0; i < template.Length; i++)
                {
                    UnmanagedMemory.Free(ref template[i].value);
                    template[i].valueLen = 0;
                }

                // Do something interesting with generated key

                // Destroy object
                rv = pkcs11.C_DestroyObject(session, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _02_GenerateKeyPairTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // The CKA_ID attribute is intended as a means of distinguishing multiple key pairs held by the same subject
                byte[] ckaId = new byte[20];
                rv = pkcs11.C_GenerateRandom(session, ckaId, Convert.ToUInt32(ckaId.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Prepare attribute template of new public key
                CK_ATTRIBUTE[] pubKeyTemplate = new CK_ATTRIBUTE[10];
                pubKeyTemplate[0] = CkaUtils.CreateAttribute(CKA.CKA_TOKEN, true);
                pubKeyTemplate[1] = CkaUtils.CreateAttribute(CKA.CKA_PRIVATE, false);
                pubKeyTemplate[2] = CkaUtils.CreateAttribute(CKA.CKA_LABEL, Settings.ApplicationName);
                pubKeyTemplate[3] = CkaUtils.CreateAttribute(CKA.CKA_ID, ckaId);
                pubKeyTemplate[4] = CkaUtils.CreateAttribute(CKA.CKA_ENCRYPT, true);
                pubKeyTemplate[5] = CkaUtils.CreateAttribute(CKA.CKA_VERIFY, true);
                pubKeyTemplate[6] = CkaUtils.CreateAttribute(CKA.CKA_VERIFY_RECOVER, true);
                pubKeyTemplate[7] = CkaUtils.CreateAttribute(CKA.CKA_WRAP, true);
                pubKeyTemplate[8] = CkaUtils.CreateAttribute(CKA.CKA_MODULUS_BITS, 1024);
                pubKeyTemplate[9] = CkaUtils.CreateAttribute(CKA.CKA_PUBLIC_EXPONENT, new byte[] { 0x01, 0x00, 0x01 });

                // Prepare attribute template of new private key
                CK_ATTRIBUTE[] privKeyTemplate = new CK_ATTRIBUTE[9];
                privKeyTemplate[0] = CkaUtils.CreateAttribute(CKA.CKA_TOKEN, true);
                privKeyTemplate[1] = CkaUtils.CreateAttribute(CKA.CKA_PRIVATE, true);
                privKeyTemplate[2] = CkaUtils.CreateAttribute(CKA.CKA_LABEL, Settings.ApplicationName);
                privKeyTemplate[3] = CkaUtils.CreateAttribute(CKA.CKA_ID, ckaId);
                privKeyTemplate[4] = CkaUtils.CreateAttribute(CKA.CKA_SENSITIVE, true);
                privKeyTemplate[5] = CkaUtils.CreateAttribute(CKA.CKA_DECRYPT, true);
                privKeyTemplate[6] = CkaUtils.CreateAttribute(CKA.CKA_SIGN, true);
                privKeyTemplate[7] = CkaUtils.CreateAttribute(CKA.CKA_SIGN_RECOVER, true);
                privKeyTemplate[8] = CkaUtils.CreateAttribute(CKA.CKA_UNWRAP, true);

                // Specify key generation mechanism (needs no parameter => no unamanaged memory is needed)
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_RSA_PKCS_KEY_PAIR_GEN);
                
                // Generate key pair
                uint pubKeyId = CK.CK_INVALID_HANDLE;
                uint privKeyId = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_GenerateKeyPair(session, ref mechanism, pubKeyTemplate, Convert.ToUInt32(pubKeyTemplate.Length), privKeyTemplate, Convert.ToUInt32(privKeyTemplate.Length), ref pubKeyId, ref privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // In LowLevelAPI we have to free unmanaged memory taken by attributes
                for (int i = 0; i < privKeyTemplate.Length; i++)
                {
                    UnmanagedMemory.Free(ref privKeyTemplate[i].value);
                    privKeyTemplate[i].valueLen = 0;
                }

                for (int i = 0; i < pubKeyTemplate.Length; i++)
                {
                    UnmanagedMemory.Free(ref pubKeyTemplate[i].value);
                    pubKeyTemplate[i].valueLen = 0;
                }

                // Do something interesting with generated key pair
                
                // Destroy object
                rv = pkcs11.C_DestroyObject(session, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_DestroyObject(session, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_GetAttributeValueTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Create object
                uint objectId = CK.CK_INVALID_HANDLE;
                rv = Helpers.CreateDataObject(pkcs11, session, ref objectId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Prepare list of empty attributes we want to read
                CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[2];
                template[0] = CkaUtils.CreateAttribute(CKA.CKA_LABEL);
                template[1] = CkaUtils.CreateAttribute(CKA.CKA_VALUE);

                // Get size of each individual attribute value in first call
                rv = pkcs11.C_GetAttributeValue(session, objectId, template, Convert.ToUInt32(template.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // In LowLevelAPI we have to allocate unmanaged memory for attribute value
                for (int i = 0; i < template.Length; i++)
                    template[i].value = UnmanagedMemory.Allocate(Convert.ToInt32(template[i].valueLen));

                // Get attribute value in second call
                rv = pkcs11.C_GetAttributeValue(session, objectId, template, Convert.ToUInt32(template.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with attribute value
                byte[] ckaLabel = UnmanagedMemory.Read(template[0].value, Convert.ToInt32(template[0].valueLen));
                Assert.IsTrue(Convert.ToBase64String(ckaLabel) == Convert.ToBase64String(Settings.ApplicationNameArray));

                // In LowLevelAPI we have to free unmanaged memory taken by attributes
                for (int i = 0; i < template.Length; i++)
                {
                    UnmanagedMemory.Free(ref template[i].value);
                    template[i].valueLen = 0;
                }

                rv = pkcs11.C_DestroyObject(session, objectId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        /// <summary>
        /// Creates the PKCS#1 v1.5 RSA signature with SHA-1 mechanism
        /// </summary>
        /// <param name="data">Data that should be signed</param>
        /// <param name="uri">PKCS#11 URI identifying PKCS#11 library, token and private key</param>
        /// <returns>PKCS#1 v1.5 RSA signature</returns>
        private byte[] SignData(byte[] data, string uri)
        {
            // Verify input parameters
            if (data == null)
                throw new ArgumentNullException("data");

            if (string.IsNullOrEmpty(uri))
                throw new ArgumentNullException("uri");

            // Parse PKCS#11 URI
            Pkcs11Uri pkcs11Uri = new Pkcs11Uri(uri);

            // Verify that URI contains all information required to perform this operation
            if (pkcs11Uri.ModulePath == null)
                throw new Exception("PKCS#11 URI does not specify PKCS#11 library");

            if (pkcs11Uri.PinValue == null)
                throw new Exception("PKCS#11 URI does not specify PIN");

            if (!pkcs11Uri.DefinesObject || pkcs11Uri.Type != CKO.CKO_PRIVATE_KEY)
                throw new Exception("PKCS#11 URI does not specify private key");

            // Load and initialize PKCS#11 library specified by URI
            CKR rv = CKR.CKR_OK;

            using (Pkcs11 pkcs11 = new Pkcs11(pkcs11Uri.ModulePath, true))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());

                // Obtain a list of all slots with tokens that match URI
                uint[] slots = null;
                
                rv = Pkcs11UriUtils.GetMatchingSlotList(pkcs11Uri, pkcs11, true, out slots);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                if ((slots == null) || (slots.Length == 0))
                    throw new Exception("None of the slots matches PKCS#11 URI");

                // Open read only session with first token that matches URI
                uint session = CK.CK_INVALID_HANDLE;

                rv = pkcs11.C_OpenSession(slots[0], (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Login as normal user with PIN acquired from URI
                byte[] pinValue = ConvertUtils.Utf8StringToBytes(pkcs11Uri.PinValue);

                rv = pkcs11.C_Login(session, CKU.CKU_USER, pinValue, Convert.ToUInt32(pinValue.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Get list of object attributes for the private key specified by URI
                CK_ATTRIBUTE[] attributes = null;

                Pkcs11UriUtils.GetObjectAttributes(pkcs11Uri, out attributes);

                // Find private key specified by URI
                uint foundObjectCount = 0;
                uint[] foundObjectIds = new uint[] { CK.CK_INVALID_HANDLE };

                rv = pkcs11.C_FindObjectsInit(session, attributes, Convert.ToUInt32(attributes.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_FindObjects(session, foundObjectIds, Convert.ToUInt32(foundObjectIds.Length), ref foundObjectCount);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_FindObjectsFinal(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                if ((foundObjectCount == 0) || (foundObjectIds[0] == CK.CK_INVALID_HANDLE))
                    throw new Exception("None of the private keys match PKCS#11 URI");

                // Create signature with the private key specified by URI
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_SHA1_RSA_PKCS);

                rv = pkcs11.C_SignInit(session, ref mechanism, foundObjectIds[0]);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                uint signatureLen = 0;

                rv = pkcs11.C_Sign(session, data, Convert.ToUInt32(data.Length), null, ref signatureLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                Assert.IsTrue(signatureLen > 0);

                byte[] signature = new byte[signatureLen];

                rv = pkcs11.C_Sign(session, data, Convert.ToUInt32(data.Length), signature, ref signatureLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                if (signature.Length != signatureLen)
                    Array.Resize(ref signature, Convert.ToInt32(signatureLen));

                // Release PKCS#11 resources
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                return signature;
            }
        }
        public void _01_BasicWrapAndUnwrapKeyTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate asymetric key pair
                uint pubKeyId = CK.CK_INVALID_HANDLE;
                uint privKeyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKeyPair(pkcs11, session, ref pubKeyId, ref privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate symetric key
                uint keyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKey(pkcs11, session, ref keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Specify wrapping mechanism (needs no parameter => no unamanaged memory is needed)
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_RSA_PKCS);

                // Get length of wrapped key in first call
                uint wrappedKeyLen = 0;
                rv = pkcs11.C_WrapKey(session, ref mechanism, pubKeyId, keyId, null, ref wrappedKeyLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                Assert.IsTrue(wrappedKeyLen > 0);
                
                // Allocate array for wrapped key
                byte[] wrappedKey = new byte[wrappedKeyLen];

                // Get wrapped key in second call
                rv = pkcs11.C_WrapKey(session, ref mechanism, pubKeyId, keyId, wrappedKey, ref wrappedKeyLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with wrapped key

                // Define attributes for unwrapped key
                CK_ATTRIBUTE[] template = new CK_ATTRIBUTE[6];
                template[0] = CkaUtils.CreateAttribute(CKA.CKA_CLASS, CKO.CKO_SECRET_KEY);
                template[1] = CkaUtils.CreateAttribute(CKA.CKA_KEY_TYPE, CKK.CKK_DES3);
                template[2] = CkaUtils.CreateAttribute(CKA.CKA_ENCRYPT, true);
                template[3] = CkaUtils.CreateAttribute(CKA.CKA_DECRYPT, true);
                template[4] = CkaUtils.CreateAttribute(CKA.CKA_DERIVE, true);
                template[5] = CkaUtils.CreateAttribute(CKA.CKA_EXTRACTABLE, true);

                // Unwrap key
                uint unwrappedKeyId = 0;
                rv = pkcs11.C_UnwrapKey(session, ref mechanism, privKeyId, wrappedKey, wrappedKeyLen, template, Convert.ToUInt32(template.Length), ref unwrappedKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with unwrapped key

                rv = pkcs11.C_DestroyObject(session, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_DestroyObject(session, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_DestroyObject(session, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _02_SignAndVerifyMultiPartTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate asymetric key pair
                uint pubKeyId = CK.CK_INVALID_HANDLE;
                uint privKeyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKeyPair(pkcs11, session, ref pubKeyId, ref privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Specify signing mechanism (needs no parameter => no unamanaged memory is needed)
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_SHA1_RSA_PKCS);

                byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world");
                byte[] signature = null;

                // Multipart signature functions C_SignUpdate and C_SignFinal can be used i.e. for signing of streamed data
                using (MemoryStream inputStream = new MemoryStream(sourceData))
                {
                    // Initialize signing operation
                    rv = pkcs11.C_SignInit(session, ref mechanism, privKeyId);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    // Prepare buffer for source data part
                    // Note that in real world application we would rather use bigger buffer i.e. 4096 bytes long
                    byte[] part = new byte[8];

                    // Read input stream with source data
                    int bytesRead = 0;
                    while ((bytesRead = inputStream.Read(part, 0, part.Length)) > 0)
                    {
                        // Process each individual source data part
                        rv = pkcs11.C_SignUpdate(session, part, Convert.ToUInt32(bytesRead));
                        if (rv != CKR.CKR_OK)
                            Assert.Fail(rv.ToString());
                    }

                    // Get the length of signature in first call
                    uint signatureLen = 0;
                    rv = pkcs11.C_SignFinal(session, null, ref signatureLen);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    Assert.IsTrue(signatureLen > 0);
                    
                    // Allocate array for signature
                    signature = new byte[signatureLen];

                    // Get signature in second call
                    rv = pkcs11.C_SignFinal(session, signature, ref signatureLen);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                }

                // Do something interesting with signature

                // Multipart verification functions C_VerifyUpdate and C_VerifyFinal can be used i.e. for signature verification of streamed data
                using (MemoryStream inputStream = new MemoryStream(sourceData))
                {
                    // Initialize verification operation
                    rv = pkcs11.C_VerifyInit(session, ref mechanism, pubKeyId);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    // Prepare buffer for source data part
                    // Note that in real world application we would rather use bigger buffer i.e. 4096 bytes long
                    byte[] part = new byte[8];
                    
                    // Read input stream with source data
                    int bytesRead = 0;
                    while ((bytesRead = inputStream.Read(part, 0, part.Length)) > 0)
                    {
                        // Process each individual source data part
                        rv = pkcs11.C_VerifyUpdate(session, part, Convert.ToUInt32(bytesRead));
                        if (rv != CKR.CKR_OK)
                            Assert.Fail(rv.ToString());
                    }

                    // Verify signature
                    rv = pkcs11.C_VerifyFinal(session, signature, Convert.ToUInt32(signature.Length));
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                }

                // Do something interesting with verification result

                rv = pkcs11.C_DestroyObject(session, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_DestroyObject(session, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _02_EncryptAndDecryptMultiPartTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate symetric key
                uint keyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKey(pkcs11, session, ref keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate random initialization vector
                byte[] iv = new byte[8];
                rv = pkcs11.C_GenerateRandom(session, iv, Convert.ToUInt32(iv.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Specify encryption mechanism with initialization vector as parameter.
                // Note that CkmUtils.CreateMechanism() automaticaly copies iv into newly allocated unmanaged memory.
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_DES3_CBC, iv);
                
                byte[] sourceData = ConvertUtils.Utf8StringToBytes("Our new password");
                byte[] encryptedData = null;
                byte[] decryptedData = null;

                // Multipart encryption functions C_EncryptUpdate and C_EncryptFinal can be used i.e. for encryption of streamed data
                using (MemoryStream inputStream = new MemoryStream(sourceData), outputStream = new MemoryStream())
                {
                    // Initialize encryption operation
                    rv = pkcs11.C_EncryptInit(session, ref mechanism, keyId);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    // Prepare buffer for source data part
                    // Note that in real world application we would rather use bigger buffer i.e. 4096 bytes long
                    byte[] part = new byte[8];

                    // Prepare buffer for encrypted data part
                    // Note that in real world application we would rather use bigger buffer i.e. 4096 bytes long
                    byte[] encryptedPart = new byte[8];
                    uint encryptedPartLen = Convert.ToUInt32(encryptedPart.Length);

                    // Read input stream with source data
                    int bytesRead = 0;
                    while ((bytesRead = inputStream.Read(part, 0, part.Length)) > 0)
                    {
                        // Encrypt each individual source data part
                        encryptedPartLen = Convert.ToUInt32(encryptedPart.Length);
                        rv = pkcs11.C_EncryptUpdate(session, part, Convert.ToUInt32(bytesRead), encryptedPart, ref encryptedPartLen);
                        if (rv != CKR.CKR_OK)
                            Assert.Fail(rv.ToString());

                        // Append encrypted data part to the output stream
                        outputStream.Write(encryptedPart, 0, Convert.ToInt32(encryptedPartLen));
                    }

                    // Get the length of last encrypted data part in first call
                    byte[] lastEncryptedPart = null;
                    uint lastEncryptedPartLen = 0;
                    rv = pkcs11.C_EncryptFinal(session, null, ref lastEncryptedPartLen);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());
                    
                    // Allocate array for the last encrypted data part
                    lastEncryptedPart = new byte[lastEncryptedPartLen];

                    // Get the last encrypted data part in second call
                    rv = pkcs11.C_EncryptFinal(session, lastEncryptedPart, ref lastEncryptedPartLen);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    // Append the last encrypted data part to the output stream
                    outputStream.Write(lastEncryptedPart, 0, Convert.ToInt32(lastEncryptedPartLen));

                    // Read whole output stream to the byte array so we can compare results more easily
                    encryptedData = outputStream.ToArray();
                }

                // Do something interesting with encrypted data

                // Multipart decryption functions C_DecryptUpdate and C_DecryptFinal can be used i.e. for decryption of streamed data
                using (MemoryStream inputStream = new MemoryStream(encryptedData), outputStream = new MemoryStream())
                {
                    // Initialize decryption operation
                    rv = pkcs11.C_DecryptInit(session, ref mechanism, keyId);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    // Prepare buffer for encrypted data part
                    // Note that in real world application we would rather use bigger buffer i.e. 4096 bytes long
                    byte[] encryptedPart = new byte[8];

                    // Prepare buffer for decrypted data part
                    // Note that in real world application we would rather use bigger buffer i.e. 4096 bytes long
                    byte[] part = new byte[8];
                    uint partLen = Convert.ToUInt32(part.Length);

                    // Read input stream with encrypted data
                    int bytesRead = 0;
                    while ((bytesRead = inputStream.Read(encryptedPart, 0, encryptedPart.Length)) > 0)
                    {
                        // Decrypt each individual encrypted data part
                        partLen = Convert.ToUInt32(part.Length);
                        rv = pkcs11.C_DecryptUpdate(session, encryptedPart, Convert.ToUInt32(bytesRead), part, ref partLen);
                        if (rv != CKR.CKR_OK)
                            Assert.Fail(rv.ToString());

                        // Append decrypted data part to the output stream
                        outputStream.Write(part, 0, Convert.ToInt32(partLen));
                    }

                    // Get the length of last decrypted data part in first call
                    byte[] lastPart = null;
                    uint lastPartLen = 0;
                    rv = pkcs11.C_DecryptFinal(session, null, ref lastPartLen);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    // Allocate array for the last decrypted data part
                    lastPart = new byte[lastPartLen];

                    // Get the last decrypted data part in second call
                    rv = pkcs11.C_DecryptFinal(session, lastPart, ref lastPartLen);
                    if (rv != CKR.CKR_OK)
                        Assert.Fail(rv.ToString());

                    // Append the last decrypted data part to the output stream
                    outputStream.Write(lastPart, 0, Convert.ToInt32(lastPartLen));

                    // Read whole output stream to the byte array so we can compare results more easily
                    decryptedData = outputStream.ToArray();
                }

                // Do something interesting with decrypted data
                Assert.IsTrue(Convert.ToBase64String(sourceData) == Convert.ToBase64String(decryptedData));

                // In LowLevelAPI we have to free unmanaged memory taken by mechanism parameter (iv in this case)
                UnmanagedMemory.Free(ref mechanism.Parameter);
                mechanism.ParameterLen = 0;
                
                rv = pkcs11.C_DestroyObject(session, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _01_SignAndVerifySinglePartTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate asymetric key pair
                uint pubKeyId = CK.CK_INVALID_HANDLE;
                uint privKeyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKeyPair(pkcs11, session, ref pubKeyId, ref privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Specify signing mechanism (needs no parameter => no unamanaged memory is needed)
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_SHA1_RSA_PKCS);

                // Initialize signing operation
                rv = pkcs11.C_SignInit(session, ref mechanism, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world");

                // Get length of signature in first call
                uint signatureLen = 0;
                rv = pkcs11.C_Sign(session, sourceData, Convert.ToUInt32(sourceData.Length), null, ref signatureLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                Assert.IsTrue(signatureLen > 0);
                
                // Allocate array for signature
                byte[] signature = new byte[signatureLen];

                // Get signature in second call
                rv = pkcs11.C_Sign(session, sourceData, Convert.ToUInt32(sourceData.Length), signature, ref signatureLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with signature

                // Initialize verification operation
                rv = pkcs11.C_VerifyInit(session, ref mechanism, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Verify signature
                rv = pkcs11.C_Verify(session, sourceData, Convert.ToUInt32(sourceData.Length), signature, Convert.ToUInt32(signature.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with verification result

                rv = pkcs11.C_DestroyObject(session, privKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                rv = pkcs11.C_DestroyObject(session, pubKeyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }
        public void _03_DigestKeyTest()
        {
            if (Platform.UnmanagedLongSize != 4 || Platform.StructPackingSize != 1)
                Assert.Inconclusive("Test cannot be executed on this platform");

            CKR rv = CKR.CKR_OK;
            
            using (Pkcs11 pkcs11 = new Pkcs11(Settings.Pkcs11LibraryPath))
            {
                rv = pkcs11.C_Initialize(Settings.InitArgs41);
                if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED))
                    Assert.Fail(rv.ToString());
                
                // Find first slot with token present
                uint slotId = Helpers.GetUsableSlot(pkcs11);
                
                uint session = CK.CK_INVALID_HANDLE;
                rv = pkcs11.C_OpenSession(slotId, (CKF.CKF_SERIAL_SESSION | CKF.CKF_RW_SESSION), IntPtr.Zero, IntPtr.Zero, ref session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Login as normal user
                rv = pkcs11.C_Login(session, CKU.CKU_USER, Settings.NormalUserPinArray, Convert.ToUInt32(Settings.NormalUserPinArray.Length));
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                // Generate symetric key
                uint keyId = CK.CK_INVALID_HANDLE;
                rv = Helpers.GenerateKey(pkcs11, session, ref keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Specify digesting mechanism (needs no parameter => no unamanaged memory is needed)
                CK_MECHANISM mechanism = CkmUtils.CreateMechanism(CKM.CKM_SHA_1);
                
                // Initialize digesting operation
                rv = pkcs11.C_DigestInit(session, ref mechanism);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Digest key
                rv = pkcs11.C_DigestKey(session, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Get length of digest value in first call
                uint digestLen = 0;
                rv = pkcs11.C_DigestFinal(session, null, ref digestLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());;
                
                Assert.IsTrue(digestLen > 0);
                
                // Allocate array for digest value
                byte[] digest = new byte[digestLen];
                
                // Get digest value in second call
                rv = pkcs11.C_DigestFinal(session, digest, ref digestLen);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());

                // Do something interesting with digest value

                rv = pkcs11.C_DestroyObject(session, keyId);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Logout(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_CloseSession(session);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
                
                rv = pkcs11.C_Finalize(IntPtr.Zero);
                if (rv != CKR.CKR_OK)
                    Assert.Fail(rv.ToString());
            }
        }