Unicode C

PBES2 Password-Based Encryption

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Demonstrates PBES2 encryption Unicode C

#include <C_CkCrypt2W.h>

void ChilkatSample(void)
    {
    HCkCrypt2W crypt;
    const wchar_t *plainText;
    const wchar_t *encryptedText;
    const wchar_t *decryptedText;

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

    crypt = CkCrypt2W_Create();

    // Set properties for PBES2 encryption:

    // When the encryption algorithm is set to "pbes2",
    // Chilkat will automatically derive the actual secret key using PBKDF2 and
    // the specified paramters: password, salt, iteration count, hash function, and desired key length.

    CkCrypt2W_putCryptAlgorithm(crypt,L"pbes2");
    CkCrypt2W_putPbesPassword(crypt,L"mySecretPassword");

    // Set the underlying PBE algorithm (and key length):
    CkCrypt2W_putPbesAlgorithm(crypt,L"aes");
    CkCrypt2W_putKeyLength(crypt,256);

    CkCrypt2W_SetEncodedIV(crypt,L"000102030405060708090A0B0C0D0E0F",L"hex");

    // Give it some salt:
    CkCrypt2W_SetEncodedSalt(crypt,L"0102030405060708",L"hex");

    // A higher iteration count makes the algorithm more
    // computationally expensive and therefore exhaustive
    // searches (for breaking the encryption) is more difficult:
    CkCrypt2W_putIterationCount(crypt,1024);

    // A hash algorithm needs to be set for PBES2:
    CkCrypt2W_putHashAlgorithm(crypt,L"sha256");

    // Indicate that the encrypted bytes should be returned
    // as a hex string:
    CkCrypt2W_putEncodingMode(crypt,L"hex");

    plainText = L"To be encrypted.";

    encryptedText = CkCrypt2W_encryptStringENC(crypt,plainText);

    wprintf(L"%s\n",encryptedText);

    // Now decrypt:
    decryptedText = CkCrypt2W_decryptStringENC(crypt,encryptedText);

    wprintf(L"%s\n",decryptedText);


    CkCrypt2W_Dispose(crypt);

    }