public void _01_DigestSinglePartTest() { if (Platform.UnmanagedLongSize != 8 || 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.InitArgs81); if ((rv != CKR.CKR_OK) && (rv != CKR.CKR_CRYPTOKI_ALREADY_INITIALIZED)) { Assert.Fail(rv.ToString()); } // Find first slot with token present ulong slotId = Helpers.GetUsableSlot(pkcs11); ulong 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()); } // 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()); } byte[] sourceData = ConvertUtils.Utf8StringToBytes("Hello world"); // Get length of digest value in first call ulong digestLen = 0; rv = pkcs11.C_Digest(session, sourceData, Convert.ToUInt64(sourceData.Length), 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_Digest(session, sourceData, Convert.ToUInt64(sourceData.Length), digest, ref digestLen); if (rv != CKR.CKR_OK) { Assert.Fail(rv.ToString()); } // Do something interesting with digest value 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()); } } }