Error: missing type specifier - int assumed. C++ does not support default int

[mark103]

Hi all,

I need your help. I wrote a form with simple class with template use. I can't compile my application in a debug as i have got the errors.

Form1:

#pragma once

#include "Class1.h"


namespace Form1{

    using namespace System;
    using namespace System::Collections::Generic;
    using namespace System::Text;
    using namespace System::ComponentModel;
    using namespace System::Collections;
    using namespace System::Windows::Forms;
    using namespace System::Data;
    using namespace System::Drawing;

    /// <summary>
    /// Summary for Form1
    ///
    /// WARNING: If you change the name of this class, you will need to change the
    ///          'Resource File Name' property for the managed resource compiler tool
    ///          associated with all .resx files this class depends on.  Otherwise,
    ///          the designers will not be able to interact properly with localized
    ///          resources associated with this form.
    /// </summary>
    public ref class Form1 : public System::Windows::Forms::Form
    {
    public:
        Form1(void)
        {
            InitializeComponent();
            //
            //TODO: Add the constructor code here
            //
        }

    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        ~Form1()
        {
            if (components)
            {
                delete components;
            }
        }
    internal: System::Windows::Forms::Label^  label2;
    protected:
    internal: System::Windows::Forms::Button^  Button1;
    internal: System::Windows::Forms::TextBox^  plainText;

    private:
        /// <summary>
        /// Required designer variable.
        /// </summary>
        System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        void InitializeComponent(void)
        {
            this->label2 = (gcnew System::Windows::Forms::Label());
            this->Button1 = (gcnew System::Windows::Forms::Button());
            this->plainText = (gcnew System::Windows::Forms::TextBox());
            this->SuspendLayout();
            //
            // label2
            //
            this->label2->AutoSize = true;
            this->label2->Location = System::Drawing::Point(24, 46);
            this->label2->Name = L"label2";
            this->label2->Size = System::Drawing::Size(302, 13);
            this->label2->TabIndex = 6;
            this->label2->Text = L"Please enter the password...";
            //
            // Button1
            //
            this->Button1->Location = System::Drawing::Point(122, 101);
            this->Button1->Name = L"Button1";
            this->Button1->Size = System::Drawing::Size(96, 34);
            this->Button1->TabIndex = 5;
            this->Button1->Text = L"Test Password!";
            this->Button1->UseVisualStyleBackColor = true;
            //
            // plainText
            //
            this->plainText->Location = System::Drawing::Point(27, 65);
            this->plainText->Name = L"plainText";
            this->plainText->Size = System::Drawing::Size(292, 20);
            this->plainText->TabIndex = 4;
            //
            // Form1
            //
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(341, 162);
            this->Controls->Add(this->label2);
            this->Controls->Add(this->Button1);
            this->Controls->Add(this->plainText);
            this->MaximizeBox = false;
            this->MinimizeBox = false;
            this->Name = L"Form1";
            this->SizeGripStyle = System::Windows::Forms::SizeGripStyle::Hide;
            this->StartPosition = System::Windows::Forms::FormStartPosition::CenterScreen;
            this->Text = L"Test Password";
            this->ResumeLayout(false);
            this->PerformLayout();

        }
#pragma endregion

        
    };
}

Class1:

#pragma once

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Diagnostics;
using namespace System::Collections::Generic;
using namespace System::Text;

namespace Form1{

    /// <summary>
    /// Summary for Class1
    /// </summary>
    public ref class Class1 :  public System::ComponentModel::Component
    {
    public:
        Class1(void)
        {
            InitializeComponent();
            //
            //TODO: Add the constructor code here
            //
        }
        Class1(System::ComponentModel::IContainer ^container)
        {
            /// <summary>
            /// Required for Windows.Forms Class Composition Designer support
            /// </summary>

            container->Add(this);
            InitializeComponent();
        }

    protected:
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        ~Class1()
        {
            if (components)
            {
                delete components;
            }
        }

    private:
        /// <summary>
        /// Required designer variable.
        /// </summary>
        System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        void InitializeComponent(void)
        {
            components = gcnew System::ComponentModel::Container();
        }
#pragma endregion


    public:    PolyAES()
    {
        this->algo = gcnew System::Security::Cryptography::RijndaelManaged();
        this->algo->Mode = System::Security::Cryptography::CipherMode::CBC;
        this->rngAlgo = gcnew System::Security::Cryptography::RNGCryptoServiceProvider();
    }



private:
    literal int saltSize = 32;

    System::Security::Cryptography::SymmetricAlgorithm ^algo;
    System::Security::Cryptography::RNGCryptoServiceProvider ^rngAlgo;
    array<Byte> ^salt;



private:
    void InitializeSecureParameters(array<Byte> ^key)
    {
        // init rijndael IV
        this->algo->GenerateIV();
        salt = gcnew array<Byte>(saltSize);
        rngAlgo->GetBytes(salt);
        System::Security::Cryptography::Rfc2898DeriveBytes ^pwDeriveAlg = gcnew System::Security::Cryptography::Rfc2898DeriveBytes(key, salt, 2000);
        this->algo->Key = pwDeriveAlg->GetBytes(32);
    }

    void LoadSecureParameters(array<Byte> ^key, array<Byte> ^encIv, array<Byte> ^encSalt)
    {
        this->algo->IV = encIv;
        this->salt = encSalt;
        System::Security::Cryptography::Rfc2898DeriveBytes ^pwDeriveAlg = gcnew System::Security::Cryptography::Rfc2898DeriveBytes(key, salt, 2000);
        this->algo->Key = pwDeriveAlg->GetBytes(32);
    }

public:
    String ^Encrypt(String ^plainText, String ^key)
    {
        return Convert::ToBase64String(this->Encrypt(UnicodeEncoding::UTF8->GetBytes(plainText), UnicodeEncoding::UTF8->GetBytes(key)));
    }

    String ^Decrypt(String ^cipherText, String ^key)
    {
        return UnicodeEncoding::UTF8->GetString(this->Decrypt(Convert::FromBase64String(cipherText), UnicodeEncoding::UTF8->GetBytes(key)));
    }

    array<Byte> ^Encrypt(array<Byte> ^plainText, array<Byte> ^key)
    {
        InitializeSecureParameters(key);
        System::Security::Cryptography::ICryptoTransform ^encTransform = algo->CreateEncryptor();
        return ConcatDataToCipherText(ConcatDataToCipherText(encTransform->TransformFinalBlock(plainText, 0, plainText->Length), salt), algo->IV);
    }

    array<Byte> ^Decrypt(array<Byte> ^cipherText, array<Byte> ^key)
    {
        array<Byte> ^cipherTextWithSalt = gcnew array<Byte>(1);
        array<Byte> ^encSalt = gcnew array<Byte>(1);
        array<Byte> ^origCipherText = gcnew array<Byte>(1);
        array<Byte> ^encIv = gcnew array<Byte>(1);

        SliceCipherTextIntoParts(cipherText, 16, cipherTextWithSalt, encIv);
        SliceCipherTextIntoParts(cipherTextWithSalt, saltSize, origCipherText, encSalt);
        LoadSecureParameters(key, encIv, encSalt);
        System::Security::Cryptography::ICryptoTransform ^decTransform = algo->CreateDecryptor();
        array<Byte> ^plainText = decTransform->TransformFinalBlock(origCipherText, 0, origCipherText->Length);

        return plainText;
    }

private:
    array<Byte> ^ConcatDataToCipherText(array<Byte> ^cipherText, array<Byte> ^iv)
    {
        int origLength = cipherText->Length;
        Array::Resize(cipherText, cipherText->Length + iv->Length);
        Buffer::BlockCopy(iv, 0, cipherText, origLength, iv->Length);
        return cipherText;
    }
    void SliceCipherTextIntoParts(array<Byte> ^cipherText, int secondPartLen, array<Byte> ^&#37;origCipherText, array<Byte> ^%iv)
    {
        Array::Resize(iv, secondPartLen);
        Buffer::BlockCopy(cipherText, Convert::ToInt32(cipherText->Length - secondPartLen), iv, 0, secondPartLen);
        Array::Resize(origCipherText, Convert::ToInt32(cipherText->Length - secondPartLen));
        Buffer::BlockCopy(cipherText, 0, origCipherText, 0, Convert::ToInt32(cipherText->Length - secondPartLen));
    }

    };
}

I use visual C++ 2005 Express Edition, and here is the compile error

error C4430: missing type specifier - int assumed. Note: C++ does not support default-int


the errors are linked to this line:

public:	PolyAES()
	{
		this->algo = gcnew System::Security::Cryptography::RijndaelManaged();
		this->algo->Mode = System::Security::Cryptography::CipherMode::CBC;
		this->rngAlgo = gcnew System::Security::Cryptography::RNGCryptoServiceProvider();
	}

Can anyone tell me what was wrong in this code?

Thanks,
Mark

[S_M_A]

It's just as the compiler say. PolyAES is the offender since it lacks any return value.