(MFC) ARC4 PRNG (Pseudo Random Number Generator)

Uses the ARC4 stream encryption algorithm as a pseudo random number generator.

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

    CkCrypt2 crypt;

    // Set the encryption algorithm to ARC4:	
    crypt.put_CryptAlgorithm("arc4");

    // We want the encrypted output to be a hex-encoded string.
    crypt.put_EncodingMode("hex");

    const char *key = "000102030405060708090A0B0C0D0E0F";
    const char *data = "12345678";

    // Key length is 128 bits in this example.
    crypt.put_KeyLength(128);
    crypt.SetEncodedKey(key,"hex");

    // Generate 16 "random" 8-byte blocks, encoded as hex strings.
    // This example will generate the identical output each time
    // it is run.
    const char *cipherHex = 0;
    int i;
    for (i = 0; i <= 15; i++) {
        cipherHex = crypt.encryptStringENC(data);
        strOut.append(data);
        strOut.append("\r\n");
        strOut.append(cipherHex);
        strOut.append("\r\n");
        data = cipherHex;
    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }