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Unicode C Examples

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(Unicode C) Blowfish Encryption to Match PHP's Mcrypt Extension

Demonstrates how to match Blowfish encryption results with PHP's mcrypt extension.

Please refer to this PHP (non-Chilkat) example for PHP Blowfish Encryption. The code here matches the PHP mcrypt results on that web page.

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#include <C_CkCrypt2W.h>

void ChilkatSample(void)
    {
    HCkCrypt2W crypt;
    const wchar_t *ivAscii;
    const wchar_t *keyAscii;
    const wchar_t *plainText;
    const wchar_t *cipherText;

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

    crypt = CkCrypt2W_Create();

    // Use "blowfish2" to get proper results:
    CkCrypt2W_putCryptAlgorithm(crypt,L"blowfish2");

    // CipherMode may be "ecb" or "cbc"
    CkCrypt2W_putCipherMode(crypt,L"cbc");

    // KeyLength (in bits) may be a number between 32 and 448.
    // 128-bits is usually sufficient.  The KeyLength must be a 
    // multiple of 8.
    CkCrypt2W_putKeyLength(crypt,256);

    // Pad with NULL bytes (PHP pads with NULL bytes)
    CkCrypt2W_putPaddingScheme(crypt,3);

    // EncodingMode specifies the encoding of the output for
    // encryption, and the input for decryption.
    // It may be "hex", "url", "base64", or "quoted-printable".
    CkCrypt2W_putEncodingMode(crypt,L"hex");

    // The blowfish algorithm uses a 64-bit block size, 
    // therefore the IV must be 8 bytes:
    ivAscii = L"12345678";
    CkCrypt2W_SetEncodedIV(crypt,ivAscii,L"ascii");

    // For 256-bit encryption, the key is 32 bytes:
    keyAscii = L"1234567890123456ABCDEFGHIJKLMNOP";
    CkCrypt2W_SetEncodedKey(crypt,keyAscii,L"ascii");

    plainText = L"The quick brown fox jumped over the lazy dog";

    cipherText = CkCrypt2W_encryptStringENC(crypt,plainText);
    wprintf(L"%s\n",cipherText);
    // Output should be (case insensitive):
    // 276855ca6c0d60f7d9708210440c1072e05d078e733b34b4198d609dc2fcc2f0c30926cdef3b6d52baf6e345aa03f83e

    // Do 128-bit Blowfish encryption:
    CkCrypt2W_putKeyLength(crypt,128);
    keyAscii = L"1234567890123456";
    CkCrypt2W_SetEncodedKey(crypt,keyAscii,L"ascii");

    cipherText = CkCrypt2W_encryptStringENC(crypt,plainText);
    wprintf(L"%s\n",cipherText);
    // Output should be (case insensitive):
    // d2b5abb73208aea3790621d028afcc74d8dd65fb9ea8e666444a72523f5ecca60df79a424e2c714fa6efbafcc40bdca


    CkCrypt2W_Dispose(crypt);

    }

 

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