///

Here is the code for Key Generation

                  CryptokiCollection template = new CryptokiCollection();
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_CLASS, CryptokiObject.CKO_SECRET_KEY));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_TOKEN, true));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_KEY_TYPE, Key.CKK_AES));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_PRIVATE, true));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_ENCRYPT, true));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_DECRYPT, true));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_VALUE_LEN, 32)); // 256 - AES
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_LABEL, "Just A Label"));
                template.Add(new ObjectAttribute(ObjectAttribute.CKA_ID, "8888"));
              

                key = session.GenerateKey(Mechanism.AES_KEY_GEN, template);
                

Here is the code for Encryption

                byte[] text = Encoding.ASCII.GetBytes(txtPlainText.Text);
                iv = new byte[16]; // IV should be 16 bytes with AES 256
                session.EncryptInit(new Mechanism(Mechanism.CKM_AES_CBC_PAD, iv), key);
                //Array.Resize(ref text, 16);
                byte[] CipherText = session.Encrypt(text);

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