C

Workaround for the deprecated Crypt2.DecryptBytesENC method

Shows how to replace the deprecated DecryptBytesENC method. (Chilkat is moving away from the use of CkByteData.) C

#include <C_CkCrypt2.h>
#include <C_CkByteData.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkCrypt2 crypt;
    HCkByteData unencryptedBytes;
    HCkByteData decryptedBytes;
    const char *encryptedAsHex;
    HCkBinData bd;
    HCkBinData bd2;

    success = FALSE;

    crypt = CkCrypt2_Create();

    CkCrypt2_putCryptAlgorithm(crypt,"aes");
    CkCrypt2_putCipherMode(crypt,"cbc");
    CkCrypt2_putKeyLength(crypt,128);
    CkCrypt2_putPaddingScheme(crypt,0);
    CkCrypt2_SetEncodedKey(crypt,"000102030405060708090A0B0C0D0E0F","hex");
    CkCrypt2_SetEncodedIV(crypt,"000102030405060708090A0B0C0D0E0F","hex");

    success = FALSE;

    //  ------------------------------------------------------------------------
    //  The EncryptBytesENC and DecryptBytesENC methods are deprecated:

    unencryptedBytes = CkByteData_Create();
    CkByteData_appendEncoded(unencryptedBytes,"AABBCCDDEEFF01020304","hex");

    decryptedBytes = CkByteData_Create();

    CkCrypt2_putEncodingMode(crypt,"hex");
    encryptedAsHex = CkCrypt2_encryptBytesENC(crypt,unencryptedBytes);
    printf("Encrypted: %s\n",encryptedAsHex);

    success = CkCrypt2_DecryptBytesENC(crypt,encryptedAsHex,decryptedBytes);

    //  ------------------------------------------------------------------------
    //  Replace the above CkByteData usage with the following code:
    //  (Chilkat is moving away from using CkByteData)

    bd = CkBinData_Create();
    CkBinData_AppendEncoded(bd,"AABBCCDDEEFF01020304","hex");

    //  in-place encrypt, then get as hex.
    CkCrypt2_EncryptBd(crypt,bd);
    encryptedAsHex = CkBinData_getEncoded(bd,"hex");
    printf("Encrypted: %s\n",encryptedAsHex);

    //  load from hex, then decrypt.
    bd2 = CkBinData_Create();
    CkBinData_AppendEncoded(bd2,encryptedAsHex,"hex");
    CkCrypt2_DecryptBd(crypt,bd2);
    printf("Decrypted: %s\n",CkBinData_getEncoded(bd2,"hex"));


    CkCrypt2_Dispose(crypt);
    CkByteData_Dispose(unencryptedBytes);
    CkByteData_Dispose(decryptedBytes);
    CkBinData_Dispose(bd);
    CkBinData_Dispose(bd2);

    }