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Unicode C Examples

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(Unicode C) Load JWK into PublicKey Object

Demonstrates how to load a Java Web Key (JWK) into a Chilkat public key object.

Note: This example requires Chilkat v9.5.0.66 or greater.

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#include <C_CkStringBuilderW.h>
#include <C_CkPublicKeyW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    HCkStringBuilderW sbJwk;
    BOOL success;
    HCkPublicKeyW pubkey;
    HCkStringBuilderW sbJwk2;
    HCkJsonObjectW json;
    HCkJsonObjectW jsonJwk;
    HCkPublicKeyW pubkey2;

    //  Imagine we have this JWK:

    //  {
    //  "kty":"RSA",
    //  "kid":"bilbo.baggins@hobbiton.example",
    //  "use":"sig",
    //  "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
    //  "e":"65537"
    //  }
    // 

    sbJwk = CkStringBuilderW_Create();
    success = CkStringBuilderW_LoadFile(sbJwk,L"qa_data/jwk/simple_jwk_rsa.json",L"utf-8");
    if (success != TRUE) {
        wprintf(L"Failed to load simple JWK file.\n");
        CkStringBuilderW_Dispose(sbJwk);
        return;
    }

    //  Loading it into a Chilkat public key object is easy:
    pubkey = CkPublicKeyW_Create();
    success = CkPublicKeyW_LoadFromString(pubkey,CkStringBuilderW_getAsString(sbJwk));
    if (success != TRUE) {
        wprintf(L"%s\n",CkPublicKeyW_lastErrorText(pubkey));
        CkStringBuilderW_Dispose(sbJwk);
        CkPublicKeyW_Dispose(pubkey);
        return;
    }

    wprintf(L"Simple JWK loaded into public key object.\n");

    //  ----------------------------------------------------------------------------------------------------------
    //  Demonstrate how to load a JWK that is contained within JSON into a public key object.

    //  {
    //    "alg":"RS256",
    //    "jwk":  {
    //            "kty":"RSA",
    //            "kid":"bilbo.baggins@hobbiton.example",
    //            "use":"sig",
    //            "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
    //            "e":"65537"
    //            }
    //  }

    sbJwk2 = CkStringBuilderW_Create();
    success = CkStringBuilderW_LoadFile(sbJwk2,L"qa_data/jwk/contained_jwk_rsa.json",L"utf-8");
    if (success != TRUE) {
        wprintf(L"Failed to load JWK file.\n");
        CkStringBuilderW_Dispose(sbJwk);
        CkPublicKeyW_Dispose(pubkey);
        CkStringBuilderW_Dispose(sbJwk2);
        return;
    }

    //  Get the "jwk" part of the JSON..
    json = CkJsonObjectW_Create();
    CkJsonObjectW_Load(json,CkStringBuilderW_getAsString(sbJwk2));

    jsonJwk = CkJsonObjectW_ObjectOf(json,L"jwk");
    if (CkJsonObjectW_getLastMethodSuccess(json) != TRUE) {
        wprintf(L"No jwk member exists.\n");
        CkStringBuilderW_Dispose(sbJwk);
        CkPublicKeyW_Dispose(pubkey);
        CkStringBuilderW_Dispose(sbJwk2);
        CkJsonObjectW_Dispose(json);
        return;
    }

    pubkey2 = CkPublicKeyW_Create();
    success = CkPublicKeyW_LoadFromString(pubkey2,CkJsonObjectW_emit(jsonJwk));
    if (success != TRUE) {
        wprintf(L"%s\n",CkPublicKeyW_lastErrorText(pubkey2));
        CkStringBuilderW_Dispose(sbJwk);
        CkPublicKeyW_Dispose(pubkey);
        CkStringBuilderW_Dispose(sbJwk2);
        CkJsonObjectW_Dispose(json);
        CkPublicKeyW_Dispose(pubkey2);
        return;
    }

    wprintf(L"Contained JWK loaded into public key object.\n");

    CkJsonObjectW_Dispose(jsonJwk);


    CkStringBuilderW_Dispose(sbJwk);
    CkPublicKeyW_Dispose(pubkey);
    CkStringBuilderW_Dispose(sbJwk2);
    CkJsonObjectW_Dispose(json);
    CkPublicKeyW_Dispose(pubkey2);

    }

 

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