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Build your own cryptographically safe server/client protocol

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21 Jun 2006CPOL37 min read 394.7K   22.3K   380  
This article presents all you need to implement your own secure protocol using variable keysize RSA encryption/decryption, digital signing, multi precision library, Diffie-Hellman key exchange, Rijndael, and more. Everything is converged into a secure IOCP client/server chat server.
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/////////////////////////////////////////////////////////////////////////////
//
// Dialog
//

IDD_SECURECHAT_DIALOG DIALOGEX 0, 0, 387, 238
STYLE DS_MODALFRAME | WS_MINIMIZEBOX | WS_POPUP | WS_VISIBLE | WS_CAPTION | 
    WS_SYSMENU
EXSTYLE WS_EX_APPWINDOW
CAPTION "SecureChat Server"
FONT 8, "MS Sans Serif", 0, 0, 0x1
BEGIN
    PUSHBUTTON      "Start",IDC_STARTSTOPSERVER,3,9,56,16
    EDITTEXT        IDC_ADDRESS,65,11,97,17,ES_AUTOHSCROLL
    EDITTEXT        IDC_PORTNR,65,30,97,17,ES_AUTOHSCROLL
    EDITTEXT        IDC_NROFIO,65,51,97,17,ES_AUTOHSCROLL
    EDITTEXT        IDC_MAXCONNECT,65,75,97,17,ES_AUTOHSCROLL
    PUSHBUTTON      "Disconnect",IDC_DISCONNECT,47,112,53,19
    PUSHBUTTON      "Disconnect All",IDC_DISCONNECTALL,107,112,53,19
    EDITTEXT        IDC_TEXT,3,134,115,28,ES_MULTILINE | ES_AUTOVSCROLL | 
                    ES_NOHIDESEL | ES_WANTRETURN | WS_VSCROLL
    PUSHBUTTON      "Send",IDC_SENDTXT,123,134,37,28
    EDITTEXT        IDC_KEYSIZE,293,29,91,13,ES_AUTOHSCROLL
    PUSHBUTTON      "Test Library Functionality ",IDC_SIMPLELIBTEST,293,47,
                    91,18
    PUSHBUTTON      "RSATEST",IDC_RSATEST,294,70,91,18
    PUSHBUTTON      "Diffie-Hellman Test",IDC_DHTEST,293,93,91,18
    PUSHBUTTON      "Generate DSA key",IDC_GENERATEKEY,293,116,91,18
    PUSHBUTTON      "Quit",IDCANCEL,295,224,90,13
    EDITTEXT        IDC_TXTOUT,139,177,33,38,ES_MULTILINE | ES_AUTOVSCROLL | 
                    ES_NOHIDESEL | ES_OEMCONVERT | WS_VSCROLL
    LTEXT           "Keylength in words: ",IDC_KEYSIZETXT,293,18,91,8
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                    16
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    CONTROL         "List1",IDC_USERLIST,"SysListView32",LVS_REPORT | 
                    LVS_SINGLESEL | WS_BORDER | WS_TABSTOP,189,170,41,44
    LTEXT           "Adress: ",IDC_SERVERADRESSTXT,67,1,26,8
    LTEXT           "Port: ",IDC_PORTTXT,6,37,18,8
    LTEXT           "Number of IO-workers:",IDC_TXTNROFIOWORKER,4,53,57,16
    LTEXT           "Maximum nr of connetions",IDC_TXTMAXCONNECT,5,74,54,21
    PUSHBUTTON      "Clear log",IDC_CLEARLOG,293,139,91,18
END

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STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Randomizer"
FONT 8, "MS Sans Serif"
BEGIN
    PUSHBUTTON      "Cancel",IDCANCEL,99,97,132,24
    CTEXT           "Move mouse randomly around this area and click randomly to collect entropy until this dialog disappear",
                    IDC_STATIC,41,22,259,32
    CONTROL         "Progress1",IDC_PROGRESS,"msctls_progress32",PBS_SMOOTH | 
                    WS_BORDER,7,67,324,15
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LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
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 FILESUBTYPE 0x0L
BEGIN
    BLOCK "StringFileInfo"
    BEGIN
        BLOCK "040904B0"
        BEGIN
            VALUE "CompanyName", "\0"
            VALUE "FileDescription", "SecureChat MFC Application\0"
            VALUE "FileVersion", "1, 0, 0, 1\0"
            VALUE "InternalName", "SecureChat\0"
            VALUE "LegalCopyright", "Copyright (C) 2006\0"
            VALUE "LegalTrademarks", "\0"
            VALUE "OriginalFilename", "SecureChat.EXE\0"
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/////////////////////////////////////////////////////////////////////////////
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LANGUAGE 9, 1
#pragma code_page(1252)
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#include "res\SecureChat.rc2"  // non-Microsoft Visual C++ edited resources
#include "afxres.rc"         // Standard components
#endif

/////////////////////////////////////////////////////////////////////////////
#endif    // not APSTUDIO_INVOKED

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Program Manager
Sweden Sweden
Amin Gholiha.
Education:
- Master of Science in Information Technology.
- Degree of Master of Education.
Knowledge/interest: programming (.NET,Visual, C#/C++), neural network, mathematical modeling, signal processing, sequence analysis, pattern recognition,robot technology, system design, security and business management systems. For business proposal email Gholiha@rocketmail.com, all other emails will be ignored.
Current Work:
Project Manager
www.easysoft.nu (the best free e-signature tool)

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