Unzip an AES Encrypted Text File directly into a String Variable

A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it.

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MS Windows Visual C/C++ Libraries

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BlackBerry QNX C++ Libraries

#include <C_CkZip.h>
#include <C_CkZipEntry.h>

void ChilkatSample(void)
    {
    HCkZip zip;
    BOOL success;
    HCkZipEntry entry;
    const char * xmlText;

    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;
    }

    //  This example opens a WinZip-compatible AES encrypted
    //  .zip that contains a single file: hamlet.xml.

    //  It decrypts and unzips hamlet.xml directly into a string
    //  variable.
    CkZip_SetPassword(zip,"secret");
    success = CkZip_OpenZip(zip,"hamlet.zip");
    if (success != TRUE) {
        printf("%s\n",CkZip_lastErrorText(zip));
        return;
    }

    entry = CkZip_GetEntryByName(zip,"hamlet.xml");
    if (!(entry == 0 )) {
        xmlText = CkZipEntry_inflateToString2(entry);
        printf("%s\n",xmlText);
        CkZipEntry_Dispose(entry);
    }
    else {
        printf("Failed to find entry in zip\n");
    }


    CkZip_Dispose(zip);

    }