Set the JWE Protected Header

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetProtectedHeader, which sets the integrity-protected JWE header from a JsonObject. The header specifies the key-management algorithm (alg) and content-encryption algorithm (enc).

#include <C_CkJweW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJweW jwe;
    HCkJsonObjectW header;

    success = FALSE;

    jwe = CkJweW_Create();

    //  Build the JWE protected header.  The "alg" member names the key-management algorithm and the "enc"
    //  member names the content-encryption algorithm.
    header = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(header,L"alg",L"A256KW");
    CkJsonObjectW_UpdateString(header,L"enc",L"A256GCM");

    //  Set the protected header on the JWE.  The protected header is integrity-protected and applies to
    //  all recipients.
    success = CkJweW_SetProtectedHeader(jwe,header);
    if (success == FALSE) {
        wprintf(L"%s\n",CkJweW_lastErrorText(jwe));
        CkJweW_Dispose(jwe);
        CkJsonObjectW_Dispose(header);
        return;
    }

    wprintf(L"Protected header set.\n");


    CkJweW_Dispose(jwe);
    CkJsonObjectW_Dispose(header);

    }