Remove Zip Encryption

Opens an encrypted zip archive and rewrites it with no encrypton.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

FreeBSD C++ Libraries

HP-UX C++ Libraries

BlackBerry QNX C++ Libraries

#include <C_CkZip.h>

void ChilkatSample(void)
    {
    HCkZip zip;
    BOOL success;

    zip = CkZip_Create();

    //  Any string unlocks the component for the 1st 30-days.
    success = CkZip_UnlockComponent(zip,"Anything for 30-day trial");
    if (success != TRUE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        return;
    }

    //  An encrypted .zip may be "opened" without providing a
    //  password.  However, the contents cannot be unzipped
    //  without setting the DecryptPassword property.
    success = CkZip_OpenZip(zip,"myEncrypted.zip");
    if (success != TRUE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        return;
    }

    //  Set the DecryptPassword property:
    CkZip_putDecryptPassword(zip,"myPassword");

    //  Indicate that when the zip is to be written again,
    //  it should be neither AES encrypted, or password-protected
    //  (i.e. older Zip 2.0 encryption)
    CkZip_putEncryption(zip,0);
    CkZip_putPasswordProtect(zip,FALSE);

    //  Set the filename of the new unencrypted .zip to be written:
    CkZip_putFileName(zip,"unencrypted.zip");

    //  Write the unencrypted .zip
    //  What happens during WriteZipAndClose?  --
    //  The encrypted entries from myEncrypted.zip are streamed in,
    //  decrypted, and then written out directly into unencrypted.zip
    //  In other words, internally the component is smart enough
    //  to stream the data from the existing .zip to the new .zip
    //  automatically, decrypting in the process..
    success = CkZip_WriteZipAndClose(zip);
    if (success != TRUE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        return;
    }

    printf("OK!\n");


    CkZip_Dispose(zip);

    }