Get the JWE Protected Header

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.GetProtectedHeader, which copies the decoded shared JWE protected header into a JsonObject.

#include <C_CkJwe.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJwe jwe;
    const char *jweCompact;
    HCkJsonObject json;

    success = FALSE;

    jwe = CkJwe_Create();

    //  Load the JWE.
    jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>";
    success = CkJwe_LoadJwe(jwe,jweCompact);
    if (success == FALSE) {
        printf("%s\n",CkJwe_lastErrorText(jwe));
        CkJwe_Dispose(jwe);
        return;
    }

    //  Copy the decoded shared JWE protected header into a JsonObject.  Only the protected header is
    //  returned; it is not merged with the unprotected or per-recipient headers.
    json = CkJsonObject_Create();
    success = CkJwe_GetProtectedHeader(jwe,json);
    if (success == FALSE) {
        printf("%s\n",CkJwe_lastErrorText(jwe));
        CkJwe_Dispose(jwe);
        CkJsonObject_Dispose(json);
        return;
    }

    CkJsonObject_putEmitCompact(json,FALSE);
    printf("%s\n",CkJsonObject_emit(json));


    CkJwe_Dispose(jwe);
    CkJsonObject_Dispose(json);

    }