(MFC) WPA Key Calculation from PassPhrase to Hex

Demonstrates how to calculate a WPA key from a passprhase and network SSID.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkCrypt2.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkCrypt2 crypt;

    const char *wpaHexKey = 0;

    // The "ps" is the WPA passphrase
    const char *pw = "password";
    const char *pwCharset = "ansi";

    // Hash algorithms may be: sha1, md2, md5, etc.
    const char *hashAlg = "sha1";

    // Specify the SSID in hex:
    // For example, if the SSID is "ABC", then the 
    // hex values for these us-ascii chars is "414243"
    const char *ssidHex = "414243";

    // The WPA key calculation will always use 4096 iterations.
    int iterationCount = 4096;

    // The WPA hex output should be 256 bits.
    int outputBitLen = 256;

    // Indicate that "hex" is to be returned.
    const char *enc = "hex";

    wpaHexKey = crypt.pbkdf2(pw,pwCharset,hashAlg,ssidHex,iterationCount,outputBitLen,enc);

    strOut.append(wpaHexKey);
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }